./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix034_pso.opt_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/mix034_pso.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix034_pso.opt_tso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix034_pso.opt_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-cde23df-m [2024-06-14 12:18:29,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:18:29,835 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:18:29,841 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:18:29,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:18:29,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:18:29,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:18:29,895 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:18:29,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:18:29,899 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:18:29,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:18:29,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:18:29,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:18:29,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:18:29,903 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:18:29,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:18:29,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:18:29,904 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:18:29,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:18:29,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:18:29,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:18:29,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:18:29,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:18:29,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:18:29,906 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:18:29,907 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:18:29,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:18:29,907 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:18:29,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:18:29,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:18:29,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:18:29,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:18:29,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:18:29,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:18:29,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:18:29,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:18:29,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:18:29,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:18:29,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:18:29,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:18:29,912 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:18:29,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:18:29,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:18:29,913 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:18:30,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:18:30,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:18:30,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:18:30,225 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:18:30,228 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:18:30,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix034_pso.opt_tso.opt.yml/witness.yml [2024-06-14 12:18:30,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:18:30,391 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:18:30,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix034_pso.opt_tso.opt.i [2024-06-14 12:18:31,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:18:31,875 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:18:31,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_pso.opt_tso.opt.i [2024-06-14 12:18:31,893 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c6ae4c8d/f057ec2e5e4d400f9f3dbb2dede53812/FLAG59c60d18e [2024-06-14 12:18:31,908 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c6ae4c8d/f057ec2e5e4d400f9f3dbb2dede53812 [2024-06-14 12:18:31,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:18:31,910 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:18:31,913 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:18:31,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:18:31,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:18:31,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:18:30" (1/2) ... [2024-06-14 12:18:31,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d141d4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:31, skipping insertion in model container [2024-06-14 12:18:31,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:18:30" (1/2) ... [2024-06-14 12:18:31,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4abe1bc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:31, skipping insertion in model container [2024-06-14 12:18:31,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:18:31" (2/2) ... [2024-06-14 12:18:31,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d141d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:31, skipping insertion in model container [2024-06-14 12:18:31,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:18:31" (2/2) ... [2024-06-14 12:18:31,924 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:18:31,990 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:18:31,991 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1))) [2024-06-14 12:18:31,991 INFO L97 edCorrectnessWitness]: Location invariant before [L817-L817] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1))) [2024-06-14 12:18:31,991 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:18:31,991 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-06-14 12:18:32,034 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:18:32,447 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:18:32,459 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:18:32,564 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:18:32,606 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:18:32,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32 WrapperNode [2024-06-14 12:18:32,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:18:32,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:18:32,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:18:32,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:18:32,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (1/1) ... [2024-06-14 12:18:32,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (1/1) ... [2024-06-14 12:18:32,656 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 121 [2024-06-14 12:18:32,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:18:32,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:18:32,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:18:32,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:18:32,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (1/1) ... [2024-06-14 12:18:32,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (1/1) ... [2024-06-14 12:18:32,671 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (1/1) ... [2024-06-14 12:18:32,694 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 12:18:32,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (1/1) ... [2024-06-14 12:18:32,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (1/1) ... [2024-06-14 12:18:32,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (1/1) ... [2024-06-14 12:18:32,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (1/1) ... [2024-06-14 12:18:32,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (1/1) ... [2024-06-14 12:18:32,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (1/1) ... [2024-06-14 12:18:32,716 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:18:32,717 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:18:32,717 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:18:32,717 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:18:32,718 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (1/1) ... [2024-06-14 12:18:32,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:18:32,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:18:32,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 12:18:32,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 12:18:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:18:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:18:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:18:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:18:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:18:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:18:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:18:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:18:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:18:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:18:32,795 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:18:32,912 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:18:32,913 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:18:33,302 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:18:33,302 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:18:33,428 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:18:33,428 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:18:33,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:18:33 BoogieIcfgContainer [2024-06-14 12:18:33,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:18:33,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:18:33,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:18:33,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:18:33,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:18:30" (1/4) ... [2024-06-14 12:18:33,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bb9072 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:18:33, skipping insertion in model container [2024-06-14 12:18:33,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:18:31" (2/4) ... [2024-06-14 12:18:33,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bb9072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:18:33, skipping insertion in model container [2024-06-14 12:18:33,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:32" (3/4) ... [2024-06-14 12:18:33,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bb9072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:18:33, skipping insertion in model container [2024-06-14 12:18:33,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:18:33" (4/4) ... [2024-06-14 12:18:33,436 INFO L112 eAbstractionObserver]: Analyzing ICFG mix034_pso.opt_tso.opt.i [2024-06-14 12:18:33,451 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:18:33,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:18:33,452 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:18:33,486 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:18:33,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 12:18:33,539 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-14 12:18:33,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:18:33,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:18:33,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 12:18:33,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-14 12:18:33,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:18:33,565 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;@34d1fab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:18:33,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:18:33,571 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:18:33,572 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:18:33,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:18:33,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:33,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:18:33,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:33,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:33,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1491071914, now seen corresponding path program 1 times [2024-06-14 12:18:33,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:33,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919877816] [2024-06-14 12:18:33,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:33,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:34,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:34,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:34,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919877816] [2024-06-14 12:18:34,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919877816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:34,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:34,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:18:34,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135418416] [2024-06-14 12:18:34,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:34,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:18:34,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:18:34,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:18:34,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-14 12:18:34,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:34,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:34,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-14 12:18:34,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:35,139 INFO L124 PetriNetUnfolderBase]: 131/265 cut-off events. [2024-06-14 12:18:35,141 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 12:18:35,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 265 events. 131/265 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1002 event pairs, 75 based on Foata normal form. 1/253 useless extension candidates. Maximal degree in co-relation 509. Up to 235 conditions per place. [2024-06-14 12:18:35,147 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 22 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 12:18:35,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 119 flow [2024-06-14 12:18:35,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:18:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:18:35,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-06-14 12:18:35,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-14 12:18:35,160 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 57 transitions. [2024-06-14 12:18:35,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 119 flow [2024-06-14 12:18:35,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:18:35,165 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-14 12:18:35,167 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} [2024-06-14 12:18:35,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 12:18:35,171 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-14 12:18:35,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:35,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:35,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:35,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:18:35,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:35,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:35,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1598758531, now seen corresponding path program 1 times [2024-06-14 12:18:35,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:35,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616286080] [2024-06-14 12:18:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:35,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:35,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:35,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616286080] [2024-06-14 12:18:35,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616286080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:35,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:35,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:18:35,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810926195] [2024-06-14 12:18:35,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:35,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:18:35,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:35,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:18:35,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:18:36,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 12:18:36,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:36,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:36,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 12:18:36,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:36,151 INFO L124 PetriNetUnfolderBase]: 147/288 cut-off events. [2024-06-14 12:18:36,151 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-06-14 12:18:36,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 288 events. 147/288 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1078 event pairs, 47 based on Foata normal form. 4/288 useless extension candidates. Maximal degree in co-relation 635. Up to 244 conditions per place. [2024-06-14 12:18:36,154 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-14 12:18:36,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 167 flow [2024-06-14 12:18:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:18:36,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:18:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-06-14 12:18:36,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-14 12:18:36,156 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 71 transitions. [2024-06-14 12:18:36,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 167 flow [2024-06-14 12:18:36,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:18:36,158 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-14 12:18:36,159 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} [2024-06-14 12:18:36,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-14 12:18:36,160 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-14 12:18:36,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:36,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:36,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:36,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:18:36,161 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)] === [2024-06-14 12:18:36,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:36,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1714814456, now seen corresponding path program 1 times [2024-06-14 12:18:36,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:36,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138726834] [2024-06-14 12:18:36,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:36,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:37,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:37,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138726834] [2024-06-14 12:18:37,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138726834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:37,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:37,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:18:37,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602940483] [2024-06-14 12:18:37,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:37,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:18:37,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:37,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:18:37,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:18:37,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 12:18:37,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:37,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:37,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 12:18:37,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:37,795 INFO L124 PetriNetUnfolderBase]: 143/278 cut-off events. [2024-06-14 12:18:37,795 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2024-06-14 12:18:37,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 278 events. 143/278 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1032 event pairs, 25 based on Foata normal form. 4/276 useless extension candidates. Maximal degree in co-relation 681. Up to 218 conditions per place. [2024-06-14 12:18:37,798 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-14 12:18:37,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 212 flow [2024-06-14 12:18:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:18:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:18:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-14 12:18:37,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-14 12:18:37,801 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 6 states and 95 transitions. [2024-06-14 12:18:37,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 212 flow [2024-06-14 12:18:37,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 200 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 12:18:37,803 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 113 flow [2024-06-14 12:18:37,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=113, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-06-14 12:18:37,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2024-06-14 12:18:37,804 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 113 flow [2024-06-14 12:18:37,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:37,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:37,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:37,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:18:37,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:37,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:37,806 INFO L85 PathProgramCache]: Analyzing trace with hash 982614253, now seen corresponding path program 1 times [2024-06-14 12:18:37,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:37,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384202445] [2024-06-14 12:18:37,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:37,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:38,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:38,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384202445] [2024-06-14 12:18:38,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384202445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:38,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:38,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:18:38,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787267133] [2024-06-14 12:18:38,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:38,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:18:38,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:38,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:18:38,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:18:38,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 12:18:38,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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) [2024-06-14 12:18:38,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:38,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 12:18:38,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:38,742 INFO L124 PetriNetUnfolderBase]: 119/248 cut-off events. [2024-06-14 12:18:38,743 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2024-06-14 12:18:38,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 248 events. 119/248 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 912 event pairs, 34 based on Foata normal form. 1/243 useless extension candidates. Maximal degree in co-relation 652. Up to 211 conditions per place. [2024-06-14 12:18:38,745 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 25 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-14 12:18:38,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 193 flow [2024-06-14 12:18:38,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:18:38,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:18:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-06-14 12:18:38,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-14 12:18:38,747 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 113 flow. Second operand 5 states and 73 transitions. [2024-06-14 12:18:38,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 193 flow [2024-06-14 12:18:38,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 177 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 12:18:38,749 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 124 flow [2024-06-14 12:18:38,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=97, 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=124, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-14 12:18:38,750 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-14 12:18:38,750 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 124 flow [2024-06-14 12:18:38,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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) [2024-06-14 12:18:38,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:38,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:38,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:18:38,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:38,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:38,752 INFO L85 PathProgramCache]: Analyzing trace with hash 423083473, now seen corresponding path program 1 times [2024-06-14 12:18:38,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:38,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652984951] [2024-06-14 12:18:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:38,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:39,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:39,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652984951] [2024-06-14 12:18:39,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652984951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:39,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:39,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:18:39,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410218922] [2024-06-14 12:18:39,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:39,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:18:39,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:39,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:18:39,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:18:39,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:18:39,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:39,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:39,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:18:39,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:39,654 INFO L124 PetriNetUnfolderBase]: 139/276 cut-off events. [2024-06-14 12:18:39,655 INFO L125 PetriNetUnfolderBase]: For 395/395 co-relation queries the response was YES. [2024-06-14 12:18:39,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 276 events. 139/276 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1006 event pairs, 41 based on Foata normal form. 1/276 useless extension candidates. Maximal degree in co-relation 780. Up to 242 conditions per place. [2024-06-14 12:18:39,657 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 27 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-14 12:18:39,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 216 flow [2024-06-14 12:18:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:18:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:18:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2024-06-14 12:18:39,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-14 12:18:39,659 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 124 flow. Second operand 6 states and 80 transitions. [2024-06-14 12:18:39,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 216 flow [2024-06-14 12:18:39,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 205 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:18:39,662 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 146 flow [2024-06-14 12:18:39,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, 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=146, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-14 12:18:39,663 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-14 12:18:39,663 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 146 flow [2024-06-14 12:18:39,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:39,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:39,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:39,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:18:39,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:39,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash 996899126, now seen corresponding path program 1 times [2024-06-14 12:18:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:39,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222715106] [2024-06-14 12:18:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:39,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:40,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:40,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222715106] [2024-06-14 12:18:40,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222715106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:40,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:40,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:18:40,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138217941] [2024-06-14 12:18:40,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:40,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:18:40,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:40,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:18:40,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:18:40,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:18:40,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:40,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:40,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:18:40,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:40,703 INFO L124 PetriNetUnfolderBase]: 157/305 cut-off events. [2024-06-14 12:18:40,704 INFO L125 PetriNetUnfolderBase]: For 679/679 co-relation queries the response was YES. [2024-06-14 12:18:40,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 305 events. 157/305 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1126 event pairs, 47 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 949. Up to 257 conditions per place. [2024-06-14 12:18:40,707 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 30 selfloop transitions, 12 changer transitions 0/47 dead transitions. [2024-06-14 12:18:40,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 284 flow [2024-06-14 12:18:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-14 12:18:40,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-14 12:18:40,710 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 146 flow. Second operand 7 states and 93 transitions. [2024-06-14 12:18:40,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 284 flow [2024-06-14 12:18:40,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 265 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:18:40,713 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 206 flow [2024-06-14 12:18:40,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-14 12:18:40,716 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-14 12:18:40,717 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 206 flow [2024-06-14 12:18:40,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:40,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:40,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:40,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:18:40,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:40,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:40,718 INFO L85 PathProgramCache]: Analyzing trace with hash -256648628, now seen corresponding path program 2 times [2024-06-14 12:18:40,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:40,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220670683] [2024-06-14 12:18:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:41,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:41,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220670683] [2024-06-14 12:18:41,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220670683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:41,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:41,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:18:41,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487440906] [2024-06-14 12:18:41,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:41,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:18:41,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:41,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:18:41,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:18:41,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:18:41,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:41,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:41,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:18:41,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:41,713 INFO L124 PetriNetUnfolderBase]: 166/320 cut-off events. [2024-06-14 12:18:41,713 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-06-14 12:18:41,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 320 events. 166/320 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1177 event pairs, 46 based on Foata normal form. 2/321 useless extension candidates. Maximal degree in co-relation 1090. Up to 270 conditions per place. [2024-06-14 12:18:41,716 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 35 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-06-14 12:18:41,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 348 flow [2024-06-14 12:18:41,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:41,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 12:18:41,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 12:18:41,719 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 206 flow. Second operand 7 states and 96 transitions. [2024-06-14 12:18:41,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 348 flow [2024-06-14 12:18:41,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 334 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 12:18:41,724 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 253 flow [2024-06-14 12:18:41,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-06-14 12:18:41,725 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-14 12:18:41,725 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 253 flow [2024-06-14 12:18:41,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:41,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:41,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:41,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:18:41,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:41,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash 230678672, now seen corresponding path program 3 times [2024-06-14 12:18:41,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:41,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876803198] [2024-06-14 12:18:41,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:41,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:42,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:42,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876803198] [2024-06-14 12:18:42,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876803198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:42,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:42,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:18:42,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004671177] [2024-06-14 12:18:42,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:42,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:18:42,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:18:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:18:42,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:18:42,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 253 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:42,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:42,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:18:42,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:42,695 INFO L124 PetriNetUnfolderBase]: 167/324 cut-off events. [2024-06-14 12:18:42,695 INFO L125 PetriNetUnfolderBase]: For 1304/1304 co-relation queries the response was YES. [2024-06-14 12:18:42,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 324 events. 167/324 cut-off events. For 1304/1304 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1217 event pairs, 49 based on Foata normal form. 2/325 useless extension candidates. Maximal degree in co-relation 1178. Up to 257 conditions per place. [2024-06-14 12:18:42,698 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 31 selfloop transitions, 16 changer transitions 0/52 dead transitions. [2024-06-14 12:18:42,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 383 flow [2024-06-14 12:18:42,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:18:42,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:18:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-14 12:18:42,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-14 12:18:42,701 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 253 flow. Second operand 6 states and 84 transitions. [2024-06-14 12:18:42,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 383 flow [2024-06-14 12:18:42,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 354 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:18:42,704 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 281 flow [2024-06-14 12:18:42,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=224, 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=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-14 12:18:42,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-14 12:18:42,711 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 281 flow [2024-06-14 12:18:42,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:42,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:42,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:42,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:18:42,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:42,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:42,714 INFO L85 PathProgramCache]: Analyzing trace with hash -600482292, now seen corresponding path program 1 times [2024-06-14 12:18:42,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:42,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453715361] [2024-06-14 12:18:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:42,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:43,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:43,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453715361] [2024-06-14 12:18:43,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453715361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:43,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:43,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:18:43,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006139550] [2024-06-14 12:18:43,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:43,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:18:43,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:43,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:18:43,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:18:43,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:18:43,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 281 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:43,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:43,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:18:43,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:43,749 INFO L124 PetriNetUnfolderBase]: 154/305 cut-off events. [2024-06-14 12:18:43,749 INFO L125 PetriNetUnfolderBase]: For 1267/1267 co-relation queries the response was YES. [2024-06-14 12:18:43,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 305 events. 154/305 cut-off events. For 1267/1267 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1144 event pairs, 41 based on Foata normal form. 1/305 useless extension candidates. Maximal degree in co-relation 1146. Up to 265 conditions per place. [2024-06-14 12:18:43,751 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 11 changer transitions 0/53 dead transitions. [2024-06-14 12:18:43,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 403 flow [2024-06-14 12:18:43,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:43,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:43,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-14 12:18:43,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:18:43,753 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 281 flow. Second operand 7 states and 91 transitions. [2024-06-14 12:18:43,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 403 flow [2024-06-14 12:18:43,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 362 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 12:18:43,756 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 281 flow [2024-06-14 12:18:43,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=281, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2024-06-14 12:18:43,757 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-14 12:18:43,757 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 281 flow [2024-06-14 12:18:43,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:43,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:43,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:43,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:18:43,758 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:43,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:43,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1612578758, now seen corresponding path program 1 times [2024-06-14 12:18:43,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:43,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162272594] [2024-06-14 12:18:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:43,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:44,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:44,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162272594] [2024-06-14 12:18:44,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162272594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:44,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:44,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:18:44,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43508398] [2024-06-14 12:18:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:44,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:18:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:18:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:18:44,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:18:44,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 281 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:44,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:44,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:18:44,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:45,054 INFO L124 PetriNetUnfolderBase]: 160/314 cut-off events. [2024-06-14 12:18:45,054 INFO L125 PetriNetUnfolderBase]: For 1630/1630 co-relation queries the response was YES. [2024-06-14 12:18:45,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 314 events. 160/314 cut-off events. For 1630/1630 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1179 event pairs, 42 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 1212. Up to 253 conditions per place. [2024-06-14 12:18:45,057 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 14 changer transitions 0/60 dead transitions. [2024-06-14 12:18:45,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 441 flow [2024-06-14 12:18:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:45,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-14 12:18:45,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-14 12:18:45,058 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 281 flow. Second operand 7 states and 97 transitions. [2024-06-14 12:18:45,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 441 flow [2024-06-14 12:18:45,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 416 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 12:18:45,061 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 313 flow [2024-06-14 12:18:45,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-06-14 12:18:45,062 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-14 12:18:45,062 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 313 flow [2024-06-14 12:18:45,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:45,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:45,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:45,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:18:45,063 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:45,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:45,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1612458602, now seen corresponding path program 1 times [2024-06-14 12:18:45,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:45,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383788306] [2024-06-14 12:18:45,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:45,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:45,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383788306] [2024-06-14 12:18:45,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383788306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:45,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:45,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:18:45,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814310397] [2024-06-14 12:18:45,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:45,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:18:45,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:45,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:18:45,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:18:45,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:18:45,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 313 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:45,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:45,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:18:45,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:46,127 INFO L124 PetriNetUnfolderBase]: 178/336 cut-off events. [2024-06-14 12:18:46,127 INFO L125 PetriNetUnfolderBase]: For 2021/2021 co-relation queries the response was YES. [2024-06-14 12:18:46,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1383 conditions, 336 events. 178/336 cut-off events. For 2021/2021 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1245 event pairs, 44 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 1352. Up to 280 conditions per place. [2024-06-14 12:18:46,130 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 42 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-14 12:18:46,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 61 transitions, 473 flow [2024-06-14 12:18:46,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:46,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:46,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-14 12:18:46,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-14 12:18:46,131 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 313 flow. Second operand 7 states and 90 transitions. [2024-06-14 12:18:46,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 61 transitions, 473 flow [2024-06-14 12:18:46,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 432 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 12:18:46,135 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 330 flow [2024-06-14 12:18:46,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=330, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-06-14 12:18:46,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-14 12:18:46,136 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 330 flow [2024-06-14 12:18:46,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:46,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:46,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:46,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:18:46,137 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:46,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:46,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1438657808, now seen corresponding path program 2 times [2024-06-14 12:18:46,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:46,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297206004] [2024-06-14 12:18:46,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:46,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:46,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:46,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297206004] [2024-06-14 12:18:46,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297206004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:46,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:46,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:18:46,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172243882] [2024-06-14 12:18:46,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:46,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:18:46,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:46,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:18:46,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:18:47,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:18:47,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 330 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:47,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:47,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:18:47,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:47,221 INFO L124 PetriNetUnfolderBase]: 189/356 cut-off events. [2024-06-14 12:18:47,222 INFO L125 PetriNetUnfolderBase]: For 2583/2583 co-relation queries the response was YES. [2024-06-14 12:18:47,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 356 events. 189/356 cut-off events. For 2583/2583 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 47 based on Foata normal form. 2/357 useless extension candidates. Maximal degree in co-relation 1505. Up to 269 conditions per place. [2024-06-14 12:18:47,224 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 39 selfloop transitions, 23 changer transitions 0/65 dead transitions. [2024-06-14 12:18:47,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 544 flow [2024-06-14 12:18:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:47,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-14 12:18:47,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-14 12:18:47,226 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 330 flow. Second operand 7 states and 92 transitions. [2024-06-14 12:18:47,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 544 flow [2024-06-14 12:18:47,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 504 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:18:47,231 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 385 flow [2024-06-14 12:18:47,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-06-14 12:18:47,232 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-14 12:18:47,232 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 385 flow [2024-06-14 12:18:47,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:47,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:47,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:47,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:18:47,233 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:47,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1438894958, now seen corresponding path program 3 times [2024-06-14 12:18:47,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:47,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130446443] [2024-06-14 12:18:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:48,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:48,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130446443] [2024-06-14 12:18:48,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130446443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:48,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:48,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:18:48,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425611805] [2024-06-14 12:18:48,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:48,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:18:48,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:48,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:18:48,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:18:48,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:18:48,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 385 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:48,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:48,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:18:48,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:48,276 INFO L124 PetriNetUnfolderBase]: 185/352 cut-off events. [2024-06-14 12:18:48,277 INFO L125 PetriNetUnfolderBase]: For 2912/2912 co-relation queries the response was YES. [2024-06-14 12:18:48,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 352 events. 185/352 cut-off events. For 2912/2912 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 49 based on Foata normal form. 2/353 useless extension candidates. Maximal degree in co-relation 1536. Up to 266 conditions per place. [2024-06-14 12:18:48,279 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 21 changer transitions 0/64 dead transitions. [2024-06-14 12:18:48,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 533 flow [2024-06-14 12:18:48,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:48,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-14 12:18:48,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-14 12:18:48,281 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 385 flow. Second operand 7 states and 92 transitions. [2024-06-14 12:18:48,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 533 flow [2024-06-14 12:18:48,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 488 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-14 12:18:48,286 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 387 flow [2024-06-14 12:18:48,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-14 12:18:48,287 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-14 12:18:48,288 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 387 flow [2024-06-14 12:18:48,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:48,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:48,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:48,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:18:48,289 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:48,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:48,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2024728652, now seen corresponding path program 1 times [2024-06-14 12:18:48,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:48,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397512307] [2024-06-14 12:18:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:48,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:49,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:49,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397512307] [2024-06-14 12:18:49,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397512307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:49,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:49,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:18:49,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56113338] [2024-06-14 12:18:49,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:49,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:18:49,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:49,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:18:49,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:18:49,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:18:49,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 387 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:49,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:49,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:18:49,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:49,635 INFO L124 PetriNetUnfolderBase]: 183/349 cut-off events. [2024-06-14 12:18:49,635 INFO L125 PetriNetUnfolderBase]: For 3023/3023 co-relation queries the response was YES. [2024-06-14 12:18:49,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 349 events. 183/349 cut-off events. For 3023/3023 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1338 event pairs, 47 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 1553. Up to 295 conditions per place. [2024-06-14 12:18:49,638 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 50 selfloop transitions, 16 changer transitions 0/69 dead transitions. [2024-06-14 12:18:49,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 69 transitions, 575 flow [2024-06-14 12:18:49,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:18:49,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:18:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 12:18:49,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-14 12:18:49,639 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 387 flow. Second operand 8 states and 101 transitions. [2024-06-14 12:18:49,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 69 transitions, 575 flow [2024-06-14 12:18:49,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 520 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:49,645 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 397 flow [2024-06-14 12:18:49,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=397, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-06-14 12:18:49,646 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-14 12:18:49,646 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 397 flow [2024-06-14 12:18:49,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:49,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:49,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:49,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:18:49,647 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:49,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:49,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1577747841, now seen corresponding path program 1 times [2024-06-14 12:18:49,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:49,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129534020] [2024-06-14 12:18:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:49,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:50,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:50,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129534020] [2024-06-14 12:18:50,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129534020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:50,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:50,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:18:50,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38912779] [2024-06-14 12:18:50,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:50,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:18:50,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:50,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:18:50,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:18:50,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:18:50,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 397 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:50,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:50,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:18:50,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:50,737 INFO L124 PetriNetUnfolderBase]: 189/357 cut-off events. [2024-06-14 12:18:50,738 INFO L125 PetriNetUnfolderBase]: For 3490/3490 co-relation queries the response was YES. [2024-06-14 12:18:50,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 357 events. 189/357 cut-off events. For 3490/3490 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1358 event pairs, 44 based on Foata normal form. 2/358 useless extension candidates. Maximal degree in co-relation 1607. Up to 291 conditions per place. [2024-06-14 12:18:50,741 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 50 selfloop transitions, 18 changer transitions 0/71 dead transitions. [2024-06-14 12:18:50,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 587 flow [2024-06-14 12:18:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:18:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:18:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 12:18:50,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-14 12:18:50,742 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 397 flow. Second operand 8 states and 101 transitions. [2024-06-14 12:18:50,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 587 flow [2024-06-14 12:18:50,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 538 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:50,751 INFO L231 Difference]: Finished difference. Result has 74 places, 59 transitions, 413 flow [2024-06-14 12:18:50,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=413, PETRI_PLACES=74, PETRI_TRANSITIONS=59} [2024-06-14 12:18:50,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-14 12:18:50,753 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 59 transitions, 413 flow [2024-06-14 12:18:50,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:50,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:50,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:50,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:18:50,754 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:50,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:50,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1648718255, now seen corresponding path program 2 times [2024-06-14 12:18:50,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:50,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818713980] [2024-06-14 12:18:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:50,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:51,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:51,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:51,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818713980] [2024-06-14 12:18:51,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818713980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:51,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:51,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:18:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630745601] [2024-06-14 12:18:51,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:51,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:18:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:51,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:18:51,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:18:51,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:18:51,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 59 transitions, 413 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:51,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:51,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:18:51,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:51,836 INFO L124 PetriNetUnfolderBase]: 210/393 cut-off events. [2024-06-14 12:18:51,836 INFO L125 PetriNetUnfolderBase]: For 4521/4521 co-relation queries the response was YES. [2024-06-14 12:18:51,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 393 events. 210/393 cut-off events. For 4521/4521 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1539 event pairs, 46 based on Foata normal form. 2/394 useless extension candidates. Maximal degree in co-relation 1865. Up to 268 conditions per place. [2024-06-14 12:18:51,839 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 47 selfloop transitions, 29 changer transitions 0/79 dead transitions. [2024-06-14 12:18:51,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 79 transitions, 737 flow [2024-06-14 12:18:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:18:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:18:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-14 12:18:51,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-14 12:18:51,841 INFO L175 Difference]: Start difference. First operand has 74 places, 59 transitions, 413 flow. Second operand 8 states and 106 transitions. [2024-06-14 12:18:51,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 79 transitions, 737 flow [2024-06-14 12:18:51,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 688 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:51,847 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 521 flow [2024-06-14 12:18:51,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=521, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-06-14 12:18:51,848 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-14 12:18:51,848 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 521 flow [2024-06-14 12:18:51,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:51,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:51,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:51,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:18:51,849 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:51,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:51,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1537847189, now seen corresponding path program 3 times [2024-06-14 12:18:51,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:51,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969908400] [2024-06-14 12:18:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:51,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:52,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:52,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969908400] [2024-06-14 12:18:52,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969908400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:52,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:52,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:18:52,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20330037] [2024-06-14 12:18:52,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:52,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:18:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:18:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:18:52,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:18:52,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 521 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:52,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:52,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:18:52,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:52,850 INFO L124 PetriNetUnfolderBase]: 206/387 cut-off events. [2024-06-14 12:18:52,851 INFO L125 PetriNetUnfolderBase]: For 4918/4918 co-relation queries the response was YES. [2024-06-14 12:18:52,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1957 conditions, 387 events. 206/387 cut-off events. For 4918/4918 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1527 event pairs, 45 based on Foata normal form. 2/388 useless extension candidates. Maximal degree in co-relation 1918. Up to 265 conditions per place. [2024-06-14 12:18:52,854 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 44 selfloop transitions, 31 changer transitions 0/78 dead transitions. [2024-06-14 12:18:52,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 78 transitions, 737 flow [2024-06-14 12:18:52,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:18:52,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:18:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 12:18:52,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:18:52,856 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 521 flow. Second operand 8 states and 104 transitions. [2024-06-14 12:18:52,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 78 transitions, 737 flow [2024-06-14 12:18:52,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 78 transitions, 680 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-14 12:18:52,863 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 531 flow [2024-06-14 12:18:52,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=531, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2024-06-14 12:18:52,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-14 12:18:52,864 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 531 flow [2024-06-14 12:18:52,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:52,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:52,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:52,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:18:52,865 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:52,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:52,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1656069905, now seen corresponding path program 4 times [2024-06-14 12:18:52,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:52,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822036955] [2024-06-14 12:18:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:52,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:53,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:53,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822036955] [2024-06-14 12:18:53,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822036955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:53,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:53,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:18:53,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368384668] [2024-06-14 12:18:53,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:53,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:18:53,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:18:53,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:18:53,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:18:53,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 531 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:53,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:53,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:18:53,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:53,931 INFO L124 PetriNetUnfolderBase]: 202/383 cut-off events. [2024-06-14 12:18:53,931 INFO L125 PetriNetUnfolderBase]: For 4976/4976 co-relation queries the response was YES. [2024-06-14 12:18:53,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 383 events. 202/383 cut-off events. For 4976/4976 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1515 event pairs, 51 based on Foata normal form. 2/384 useless extension candidates. Maximal degree in co-relation 1924. Up to 262 conditions per place. [2024-06-14 12:18:53,934 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 47 selfloop transitions, 28 changer transitions 0/78 dead transitions. [2024-06-14 12:18:53,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 78 transitions, 722 flow [2024-06-14 12:18:53,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:18:53,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:18:53,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-14 12:18:53,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-14 12:18:53,936 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 531 flow. Second operand 8 states and 105 transitions. [2024-06-14 12:18:53,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 78 transitions, 722 flow [2024-06-14 12:18:53,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 649 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:53,948 INFO L231 Difference]: Finished difference. Result has 84 places, 67 transitions, 528 flow [2024-06-14 12:18:53,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=528, PETRI_PLACES=84, PETRI_TRANSITIONS=67} [2024-06-14 12:18:53,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-14 12:18:53,948 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 67 transitions, 528 flow [2024-06-14 12:18:53,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:53,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:53,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:53,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:18:53,950 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:53,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:53,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1537837269, now seen corresponding path program 1 times [2024-06-14 12:18:53,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:53,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604803956] [2024-06-14 12:18:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:53,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:55,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:55,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604803956] [2024-06-14 12:18:55,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604803956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:55,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:55,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:18:55,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520914876] [2024-06-14 12:18:55,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:55,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:18:55,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:55,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:18:55,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:18:55,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:18:55,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 67 transitions, 528 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:55,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:55,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:18:55,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:55,320 INFO L124 PetriNetUnfolderBase]: 200/380 cut-off events. [2024-06-14 12:18:55,320 INFO L125 PetriNetUnfolderBase]: For 5054/5054 co-relation queries the response was YES. [2024-06-14 12:18:55,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 380 events. 200/380 cut-off events. For 5054/5054 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1495 event pairs, 53 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1906. Up to 338 conditions per place. [2024-06-14 12:18:55,323 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 59 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2024-06-14 12:18:55,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 77 transitions, 706 flow [2024-06-14 12:18:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:18:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:18:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 12:18:55,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 12:18:55,327 INFO L175 Difference]: Start difference. First operand has 84 places, 67 transitions, 528 flow. Second operand 9 states and 105 transitions. [2024-06-14 12:18:55,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 77 transitions, 706 flow [2024-06-14 12:18:55,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 77 transitions, 661 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 12:18:55,335 INFO L231 Difference]: Finished difference. Result has 88 places, 69 transitions, 534 flow [2024-06-14 12:18:55,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=534, PETRI_PLACES=88, PETRI_TRANSITIONS=69} [2024-06-14 12:18:55,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-14 12:18:55,335 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 69 transitions, 534 flow [2024-06-14 12:18:55,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:55,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:55,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:55,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:18:55,336 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:55,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:55,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1742010545, now seen corresponding path program 1 times [2024-06-14 12:18:55,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:55,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173676028] [2024-06-14 12:18:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:55,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:56,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173676028] [2024-06-14 12:18:56,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173676028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:56,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:56,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:18:56,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757840129] [2024-06-14 12:18:56,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:56,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:18:56,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:56,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:18:56,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:18:56,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:18:56,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 69 transitions, 534 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:56,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:56,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:18:56,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:56,569 INFO L124 PetriNetUnfolderBase]: 185/365 cut-off events. [2024-06-14 12:18:56,569 INFO L125 PetriNetUnfolderBase]: For 5765/5765 co-relation queries the response was YES. [2024-06-14 12:18:56,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 365 events. 185/365 cut-off events. For 5765/5765 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1483 event pairs, 23 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 1868. Up to 271 conditions per place. [2024-06-14 12:18:56,572 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 61 selfloop transitions, 14 changer transitions 0/84 dead transitions. [2024-06-14 12:18:56,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 84 transitions, 732 flow [2024-06-14 12:18:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:18:56,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:18:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-14 12:18:56,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-14 12:18:56,574 INFO L175 Difference]: Start difference. First operand has 88 places, 69 transitions, 534 flow. Second operand 8 states and 107 transitions. [2024-06-14 12:18:56,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 84 transitions, 732 flow [2024-06-14 12:18:56,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 645 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:18:56,581 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 493 flow [2024-06-14 12:18:56,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=493, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2024-06-14 12:18:56,582 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-14 12:18:56,582 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 493 flow [2024-06-14 12:18:56,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:56,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:56,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:56,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:18:56,583 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:56,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:56,583 INFO L85 PathProgramCache]: Analyzing trace with hash 795028153, now seen corresponding path program 2 times [2024-06-14 12:18:56,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:56,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927494702] [2024-06-14 12:18:56,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:56,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:57,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:57,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927494702] [2024-06-14 12:18:57,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927494702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:57,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:57,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:18:57,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491923189] [2024-06-14 12:18:57,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:57,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:18:57,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:57,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:18:57,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:18:57,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:18:57,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 493 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:57,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:57,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:18:57,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:57,923 INFO L124 PetriNetUnfolderBase]: 189/373 cut-off events. [2024-06-14 12:18:57,924 INFO L125 PetriNetUnfolderBase]: For 6267/6267 co-relation queries the response was YES. [2024-06-14 12:18:57,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1933 conditions, 373 events. 189/373 cut-off events. For 6267/6267 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1537 event pairs, 40 based on Foata normal form. 2/370 useless extension candidates. Maximal degree in co-relation 1890. Up to 296 conditions per place. [2024-06-14 12:18:57,928 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 60 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-06-14 12:18:57,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 84 transitions, 691 flow [2024-06-14 12:18:57,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:18:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:18:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-14 12:18:57,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-14 12:18:57,930 INFO L175 Difference]: Start difference. First operand has 86 places, 70 transitions, 493 flow. Second operand 8 states and 108 transitions. [2024-06-14 12:18:57,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 84 transitions, 691 flow [2024-06-14 12:18:57,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 655 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:57,944 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 507 flow [2024-06-14 12:18:57,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=507, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-06-14 12:18:57,945 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-14 12:18:57,945 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 507 flow [2024-06-14 12:18:57,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:57,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:57,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:57,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:18:57,946 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:57,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:57,947 INFO L85 PathProgramCache]: Analyzing trace with hash 910319323, now seen corresponding path program 3 times [2024-06-14 12:18:57,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:57,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374901465] [2024-06-14 12:18:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:57,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:58,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:58,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374901465] [2024-06-14 12:18:58,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374901465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:58,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:58,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:18:58,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890685763] [2024-06-14 12:18:58,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:58,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:18:58,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:58,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:18:58,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:18:59,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:18:59,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 507 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:59,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:59,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:18:59,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:59,306 INFO L124 PetriNetUnfolderBase]: 193/381 cut-off events. [2024-06-14 12:18:59,307 INFO L125 PetriNetUnfolderBase]: For 7077/7077 co-relation queries the response was YES. [2024-06-14 12:18:59,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 381 events. 193/381 cut-off events. For 7077/7077 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1584 event pairs, 38 based on Foata normal form. 2/378 useless extension candidates. Maximal degree in co-relation 1953. Up to 305 conditions per place. [2024-06-14 12:18:59,310 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 58 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2024-06-14 12:18:59,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 85 transitions, 715 flow [2024-06-14 12:18:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:18:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:18:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-14 12:18:59,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-14 12:18:59,312 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 507 flow. Second operand 8 states and 105 transitions. [2024-06-14 12:18:59,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 85 transitions, 715 flow [2024-06-14 12:18:59,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 85 transitions, 675 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:59,321 INFO L231 Difference]: Finished difference. Result has 91 places, 75 transitions, 549 flow [2024-06-14 12:18:59,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=549, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2024-06-14 12:18:59,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-14 12:18:59,322 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 549 flow [2024-06-14 12:18:59,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:59,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:59,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:59,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:18:59,323 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:18:59,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:59,324 INFO L85 PathProgramCache]: Analyzing trace with hash 795033113, now seen corresponding path program 1 times [2024-06-14 12:18:59,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:59,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064390383] [2024-06-14 12:18:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:59,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:00,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:00,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064390383] [2024-06-14 12:19:00,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064390383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:00,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:00,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:00,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590106917] [2024-06-14 12:19:00,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:00,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:00,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:00,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:00,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:00,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:00,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 549 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:00,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:00,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:00,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:00,464 INFO L124 PetriNetUnfolderBase]: 210/399 cut-off events. [2024-06-14 12:19:00,464 INFO L125 PetriNetUnfolderBase]: For 7091/7091 co-relation queries the response was YES. [2024-06-14 12:19:00,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 399 events. 210/399 cut-off events. For 7091/7091 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1591 event pairs, 44 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 2047. Up to 342 conditions per place. [2024-06-14 12:19:00,468 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 69 selfloop transitions, 18 changer transitions 0/90 dead transitions. [2024-06-14 12:19:00,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 785 flow [2024-06-14 12:19:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 12:19:00,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:19:00,469 INFO L175 Difference]: Start difference. First operand has 91 places, 75 transitions, 549 flow. Second operand 9 states and 111 transitions. [2024-06-14 12:19:00,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 785 flow [2024-06-14 12:19:00,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 746 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-14 12:19:00,482 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 583 flow [2024-06-14 12:19:00,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=583, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2024-06-14 12:19:00,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 12:19:00,483 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 583 flow [2024-06-14 12:19:00,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:00,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:00,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:00,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:19:00,485 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:00,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:00,486 INFO L85 PathProgramCache]: Analyzing trace with hash 910504021, now seen corresponding path program 1 times [2024-06-14 12:19:00,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:00,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772418778] [2024-06-14 12:19:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:00,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:01,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:01,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772418778] [2024-06-14 12:19:01,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772418778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:01,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:01,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:01,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598380077] [2024-06-14 12:19:01,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:01,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:01,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:01,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:01,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:01,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:01,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 583 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:01,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:01,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:01,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:01,573 INFO L124 PetriNetUnfolderBase]: 216/409 cut-off events. [2024-06-14 12:19:01,573 INFO L125 PetriNetUnfolderBase]: For 7799/7799 co-relation queries the response was YES. [2024-06-14 12:19:01,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2169 conditions, 409 events. 216/409 cut-off events. For 7799/7799 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1634 event pairs, 43 based on Foata normal form. 2/410 useless extension candidates. Maximal degree in co-relation 2122. Up to 333 conditions per place. [2024-06-14 12:19:01,576 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 67 selfloop transitions, 22 changer transitions 0/92 dead transitions. [2024-06-14 12:19:01,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 92 transitions, 831 flow [2024-06-14 12:19:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 12:19:01,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:19:01,578 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 583 flow. Second operand 9 states and 112 transitions. [2024-06-14 12:19:01,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 92 transitions, 831 flow [2024-06-14 12:19:01,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 92 transitions, 774 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:19:01,590 INFO L231 Difference]: Finished difference. Result has 98 places, 79 transitions, 607 flow [2024-06-14 12:19:01,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=607, PETRI_PLACES=98, PETRI_TRANSITIONS=79} [2024-06-14 12:19:01,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-14 12:19:01,591 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 79 transitions, 607 flow [2024-06-14 12:19:01,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:01,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:01,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:01,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:19:01,591 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:01,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:01,592 INFO L85 PathProgramCache]: Analyzing trace with hash -910737329, now seen corresponding path program 4 times [2024-06-14 12:19:01,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:01,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787632013] [2024-06-14 12:19:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:01,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:02,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:02,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787632013] [2024-06-14 12:19:02,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787632013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:02,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:02,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:19:02,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576376566] [2024-06-14 12:19:02,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:02,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:19:02,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:19:02,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:19:02,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:19:02,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 79 transitions, 607 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:02,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:02,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:19:02,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:02,773 INFO L124 PetriNetUnfolderBase]: 195/387 cut-off events. [2024-06-14 12:19:02,773 INFO L125 PetriNetUnfolderBase]: For 8204/8205 co-relation queries the response was YES. [2024-06-14 12:19:02,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 387 events. 195/387 cut-off events. For 8204/8205 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1628 event pairs, 39 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 2008. Up to 301 conditions per place. [2024-06-14 12:19:02,777 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 59 selfloop transitions, 21 changer transitions 0/89 dead transitions. [2024-06-14 12:19:02,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 89 transitions, 797 flow [2024-06-14 12:19:02,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:19:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:19:02,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-14 12:19:02,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-14 12:19:02,778 INFO L175 Difference]: Start difference. First operand has 98 places, 79 transitions, 607 flow. Second operand 8 states and 105 transitions. [2024-06-14 12:19:02,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 89 transitions, 797 flow [2024-06-14 12:19:02,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 89 transitions, 732 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:19:02,791 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 605 flow [2024-06-14 12:19:02,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=605, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-06-14 12:19:02,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-14 12:19:02,792 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 605 flow [2024-06-14 12:19:02,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:02,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:02,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:02,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:19:02,793 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:02,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:02,793 INFO L85 PathProgramCache]: Analyzing trace with hash -436895949, now seen corresponding path program 2 times [2024-06-14 12:19:02,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:02,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204438735] [2024-06-14 12:19:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:02,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:03,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:03,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204438735] [2024-06-14 12:19:03,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204438735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:03,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:03,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:03,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837348603] [2024-06-14 12:19:03,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:03,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:03,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:03,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:03,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 605 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:03,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:03,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:03,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:03,800 INFO L124 PetriNetUnfolderBase]: 234/440 cut-off events. [2024-06-14 12:19:03,800 INFO L125 PetriNetUnfolderBase]: For 9790/9790 co-relation queries the response was YES. [2024-06-14 12:19:03,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 440 events. 234/440 cut-off events. For 9790/9790 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1789 event pairs, 40 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 2402. Up to 276 conditions per place. [2024-06-14 12:19:03,803 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 39 changer transitions 0/101 dead transitions. [2024-06-14 12:19:03,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 101 transitions, 1051 flow [2024-06-14 12:19:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 12:19:03,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-14 12:19:03,804 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 605 flow. Second operand 9 states and 119 transitions. [2024-06-14 12:19:03,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 101 transitions, 1051 flow [2024-06-14 12:19:03,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 101 transitions, 976 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:03,814 INFO L231 Difference]: Finished difference. Result has 103 places, 87 transitions, 713 flow [2024-06-14 12:19:03,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=713, PETRI_PLACES=103, PETRI_TRANSITIONS=87} [2024-06-14 12:19:03,815 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-14 12:19:03,815 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 87 transitions, 713 flow [2024-06-14 12:19:03,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:03,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:03,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:03,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:19:03,816 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:03,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1021156787, now seen corresponding path program 3 times [2024-06-14 12:19:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:03,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616099182] [2024-06-14 12:19:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:03,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:04,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:04,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616099182] [2024-06-14 12:19:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616099182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:04,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:04,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:04,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83662139] [2024-06-14 12:19:04,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:04,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:04,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:04,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:04,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:04,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:04,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 87 transitions, 713 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:04,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:04,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:04,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:04,812 INFO L124 PetriNetUnfolderBase]: 230/442 cut-off events. [2024-06-14 12:19:04,812 INFO L125 PetriNetUnfolderBase]: For 9889/9889 co-relation queries the response was YES. [2024-06-14 12:19:04,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 442 events. 230/442 cut-off events. For 9889/9889 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1865 event pairs, 48 based on Foata normal form. 2/443 useless extension candidates. Maximal degree in co-relation 2384. Up to 273 conditions per place. [2024-06-14 12:19:04,815 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 63 selfloop transitions, 35 changer transitions 0/101 dead transitions. [2024-06-14 12:19:04,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 101 transitions, 1021 flow [2024-06-14 12:19:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 12:19:04,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-14 12:19:04,817 INFO L175 Difference]: Start difference. First operand has 103 places, 87 transitions, 713 flow. Second operand 9 states and 119 transitions. [2024-06-14 12:19:04,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 101 transitions, 1021 flow [2024-06-14 12:19:04,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 101 transitions, 954 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-14 12:19:04,831 INFO L231 Difference]: Finished difference. Result has 108 places, 87 transitions, 721 flow [2024-06-14 12:19:04,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=721, PETRI_PLACES=108, PETRI_TRANSITIONS=87} [2024-06-14 12:19:04,832 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-14 12:19:04,832 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 87 transitions, 721 flow [2024-06-14 12:19:04,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:04,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:04,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:04,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:19:04,832 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:04,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:04,833 INFO L85 PathProgramCache]: Analyzing trace with hash 437913391, now seen corresponding path program 4 times [2024-06-14 12:19:04,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:04,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879625455] [2024-06-14 12:19:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:04,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:05,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:05,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879625455] [2024-06-14 12:19:05,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879625455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:05,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:05,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:05,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376961102] [2024-06-14 12:19:05,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:05,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:05,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:05,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:05,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:05,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:05,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 87 transitions, 721 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:05,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:05,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:05,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:06,025 INFO L124 PetriNetUnfolderBase]: 236/448 cut-off events. [2024-06-14 12:19:06,025 INFO L125 PetriNetUnfolderBase]: For 10532/10532 co-relation queries the response was YES. [2024-06-14 12:19:06,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 448 events. 236/448 cut-off events. For 10532/10532 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1862 event pairs, 49 based on Foata normal form. 2/449 useless extension candidates. Maximal degree in co-relation 2506. Up to 399 conditions per place. [2024-06-14 12:19:06,029 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2024-06-14 12:19:06,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 98 transitions, 977 flow [2024-06-14 12:19:06,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:06,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 12:19:06,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-14 12:19:06,031 INFO L175 Difference]: Start difference. First operand has 108 places, 87 transitions, 721 flow. Second operand 9 states and 106 transitions. [2024-06-14 12:19:06,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 98 transitions, 977 flow [2024-06-14 12:19:06,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 98 transitions, 873 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:06,050 INFO L231 Difference]: Finished difference. Result has 109 places, 89 transitions, 696 flow [2024-06-14 12:19:06,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=696, PETRI_PLACES=109, PETRI_TRANSITIONS=89} [2024-06-14 12:19:06,051 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-14 12:19:06,051 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 89 transitions, 696 flow [2024-06-14 12:19:06,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:06,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:06,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:06,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:19:06,052 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:06,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:06,052 INFO L85 PathProgramCache]: Analyzing trace with hash 437616721, now seen corresponding path program 5 times [2024-06-14 12:19:06,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:06,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201982920] [2024-06-14 12:19:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:06,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:06,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:06,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201982920] [2024-06-14 12:19:06,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201982920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:06,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:06,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:06,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664838675] [2024-06-14 12:19:06,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:06,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:06,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:06,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:06,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:06,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 89 transitions, 696 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:06,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:06,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:06,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:07,093 INFO L124 PetriNetUnfolderBase]: 232/441 cut-off events. [2024-06-14 12:19:07,093 INFO L125 PetriNetUnfolderBase]: For 10276/10276 co-relation queries the response was YES. [2024-06-14 12:19:07,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2416 conditions, 441 events. 232/441 cut-off events. For 10276/10276 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1819 event pairs, 39 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2362. Up to 276 conditions per place. [2024-06-14 12:19:07,096 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 55 selfloop transitions, 43 changer transitions 0/101 dead transitions. [2024-06-14 12:19:07,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 101 transitions, 942 flow [2024-06-14 12:19:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:07,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 12:19:07,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-14 12:19:07,098 INFO L175 Difference]: Start difference. First operand has 109 places, 89 transitions, 696 flow. Second operand 9 states and 116 transitions. [2024-06-14 12:19:07,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 101 transitions, 942 flow [2024-06-14 12:19:07,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 101 transitions, 863 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-14 12:19:07,113 INFO L231 Difference]: Finished difference. Result has 111 places, 89 transitions, 708 flow [2024-06-14 12:19:07,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=708, PETRI_PLACES=111, PETRI_TRANSITIONS=89} [2024-06-14 12:19:07,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-14 12:19:07,114 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 89 transitions, 708 flow [2024-06-14 12:19:07,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:07,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:07,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:07,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:19:07,115 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:07,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:07,115 INFO L85 PathProgramCache]: Analyzing trace with hash 437924303, now seen corresponding path program 1 times [2024-06-14 12:19:07,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:07,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025610489] [2024-06-14 12:19:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:07,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:08,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:08,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025610489] [2024-06-14 12:19:08,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025610489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:08,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:08,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:08,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741680628] [2024-06-14 12:19:08,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:08,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:08,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:08,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:08,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:08,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:08,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 89 transitions, 708 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:08,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:08,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:08,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:08,408 INFO L124 PetriNetUnfolderBase]: 229/437 cut-off events. [2024-06-14 12:19:08,408 INFO L125 PetriNetUnfolderBase]: For 9880/9880 co-relation queries the response was YES. [2024-06-14 12:19:08,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 437 events. 229/437 cut-off events. For 9880/9880 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1817 event pairs, 51 based on Foata normal form. 2/438 useless extension candidates. Maximal degree in co-relation 2327. Up to 385 conditions per place. [2024-06-14 12:19:08,412 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 16 changer transitions 0/99 dead transitions. [2024-06-14 12:19:08,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 99 transitions, 922 flow [2024-06-14 12:19:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 12:19:08,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-14 12:19:08,414 INFO L175 Difference]: Start difference. First operand has 111 places, 89 transitions, 708 flow. Second operand 10 states and 114 transitions. [2024-06-14 12:19:08,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 99 transitions, 922 flow [2024-06-14 12:19:08,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 99 transitions, 821 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:08,426 INFO L231 Difference]: Finished difference. Result has 113 places, 89 transitions, 643 flow [2024-06-14 12:19:08,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=643, PETRI_PLACES=113, PETRI_TRANSITIONS=89} [2024-06-14 12:19:08,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-14 12:19:08,427 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 89 transitions, 643 flow [2024-06-14 12:19:08,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:08,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:08,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:08,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:19:08,427 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:08,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:08,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1212495991, now seen corresponding path program 1 times [2024-06-14 12:19:08,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:08,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767305054] [2024-06-14 12:19:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:08,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:09,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:09,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767305054] [2024-06-14 12:19:09,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767305054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:09,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129315165] [2024-06-14 12:19:09,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:09,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:09,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:09,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:09,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 89 transitions, 643 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:09,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:09,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:09,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:09,583 INFO L124 PetriNetUnfolderBase]: 233/445 cut-off events. [2024-06-14 12:19:09,583 INFO L125 PetriNetUnfolderBase]: For 10256/10256 co-relation queries the response was YES. [2024-06-14 12:19:09,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 445 events. 233/445 cut-off events. For 10256/10256 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1844 event pairs, 26 based on Foata normal form. 2/446 useless extension candidates. Maximal degree in co-relation 2299. Up to 357 conditions per place. [2024-06-14 12:19:09,586 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 88 selfloop transitions, 15 changer transitions 0/106 dead transitions. [2024-06-14 12:19:09,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 106 transitions, 899 flow [2024-06-14 12:19:09,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:19:09,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:19:09,589 INFO L175 Difference]: Start difference. First operand has 113 places, 89 transitions, 643 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:19:09,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 106 transitions, 899 flow [2024-06-14 12:19:09,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 106 transitions, 859 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:09,601 INFO L231 Difference]: Finished difference. Result has 114 places, 90 transitions, 649 flow [2024-06-14 12:19:09,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=649, PETRI_PLACES=114, PETRI_TRANSITIONS=90} [2024-06-14 12:19:09,602 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-14 12:19:09,602 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 90 transitions, 649 flow [2024-06-14 12:19:09,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:09,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:09,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:09,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:19:09,602 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:09,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:09,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1210622041, now seen corresponding path program 2 times [2024-06-14 12:19:09,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:09,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141967649] [2024-06-14 12:19:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:09,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:10,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:10,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141967649] [2024-06-14 12:19:10,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141967649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:10,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:10,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:10,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694757147] [2024-06-14 12:19:10,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:10,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:10,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:10,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:10,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:10,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 90 transitions, 649 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:10,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:10,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:10,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:10,840 INFO L124 PetriNetUnfolderBase]: 244/466 cut-off events. [2024-06-14 12:19:10,840 INFO L125 PetriNetUnfolderBase]: For 11905/11905 co-relation queries the response was YES. [2024-06-14 12:19:10,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 466 events. 244/466 cut-off events. For 11905/11905 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1984 event pairs, 44 based on Foata normal form. 2/467 useless extension candidates. Maximal degree in co-relation 2471. Up to 383 conditions per place. [2024-06-14 12:19:10,843 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 87 selfloop transitions, 18 changer transitions 0/108 dead transitions. [2024-06-14 12:19:10,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 108 transitions, 985 flow [2024-06-14 12:19:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:19:10,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:19:10,845 INFO L175 Difference]: Start difference. First operand has 114 places, 90 transitions, 649 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:19:10,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 108 transitions, 985 flow [2024-06-14 12:19:10,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 108 transitions, 949 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:19:10,863 INFO L231 Difference]: Finished difference. Result has 116 places, 92 transitions, 679 flow [2024-06-14 12:19:10,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=679, PETRI_PLACES=116, PETRI_TRANSITIONS=92} [2024-06-14 12:19:10,865 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-14 12:19:10,865 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 92 transitions, 679 flow [2024-06-14 12:19:10,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:10,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:10,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:10,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:19:10,866 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:10,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:10,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1713157713, now seen corresponding path program 3 times [2024-06-14 12:19:10,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:10,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785272372] [2024-06-14 12:19:10,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:10,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:11,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:11,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785272372] [2024-06-14 12:19:11,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785272372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:11,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:11,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:11,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061564484] [2024-06-14 12:19:11,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:11,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:11,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:11,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:11,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:11,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:11,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 92 transitions, 679 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:11,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:11,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:11,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:12,269 INFO L124 PetriNetUnfolderBase]: 258/492 cut-off events. [2024-06-14 12:19:12,269 INFO L125 PetriNetUnfolderBase]: For 12715/12715 co-relation queries the response was YES. [2024-06-14 12:19:12,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2666 conditions, 492 events. 258/492 cut-off events. For 12715/12715 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2155 event pairs, 48 based on Foata normal form. 2/493 useless extension candidates. Maximal degree in co-relation 2608. Up to 423 conditions per place. [2024-06-14 12:19:12,273 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 89 selfloop transitions, 20 changer transitions 0/112 dead transitions. [2024-06-14 12:19:12,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 112 transitions, 993 flow [2024-06-14 12:19:12,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:12,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 12:19:12,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-14 12:19:12,275 INFO L175 Difference]: Start difference. First operand has 116 places, 92 transitions, 679 flow. Second operand 10 states and 119 transitions. [2024-06-14 12:19:12,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 112 transitions, 993 flow [2024-06-14 12:19:12,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 112 transitions, 950 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:12,297 INFO L231 Difference]: Finished difference. Result has 124 places, 101 transitions, 771 flow [2024-06-14 12:19:12,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=771, PETRI_PLACES=124, PETRI_TRANSITIONS=101} [2024-06-14 12:19:12,298 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-14 12:19:12,298 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 101 transitions, 771 flow [2024-06-14 12:19:12,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:12,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:12,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:12,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:19:12,299 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:12,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:12,299 INFO L85 PathProgramCache]: Analyzing trace with hash 997579067, now seen corresponding path program 4 times [2024-06-14 12:19:12,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:12,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111311355] [2024-06-14 12:19:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:12,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:13,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:13,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111311355] [2024-06-14 12:19:13,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111311355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:13,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:13,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:13,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834151442] [2024-06-14 12:19:13,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:13,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:13,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:13,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:13,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:13,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:13,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 101 transitions, 771 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:13,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:13,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:13,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:13,764 INFO L124 PetriNetUnfolderBase]: 271/518 cut-off events. [2024-06-14 12:19:13,764 INFO L125 PetriNetUnfolderBase]: For 13454/13454 co-relation queries the response was YES. [2024-06-14 12:19:13,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 518 events. 271/518 cut-off events. For 13454/13454 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2310 event pairs, 45 based on Foata normal form. 2/519 useless extension candidates. Maximal degree in co-relation 2767. Up to 451 conditions per place. [2024-06-14 12:19:13,766 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 95 selfloop transitions, 20 changer transitions 0/118 dead transitions. [2024-06-14 12:19:13,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 118 transitions, 1080 flow [2024-06-14 12:19:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:19:13,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 12:19:13,768 INFO L175 Difference]: Start difference. First operand has 124 places, 101 transitions, 771 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:19:13,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 118 transitions, 1080 flow [2024-06-14 12:19:13,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 118 transitions, 1054 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 12:19:13,791 INFO L231 Difference]: Finished difference. Result has 132 places, 107 transitions, 852 flow [2024-06-14 12:19:13,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=852, PETRI_PLACES=132, PETRI_TRANSITIONS=107} [2024-06-14 12:19:13,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-14 12:19:13,792 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 107 transitions, 852 flow [2024-06-14 12:19:13,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:13,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:13,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:13,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:19:13,792 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:13,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:13,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1689909721, now seen corresponding path program 5 times [2024-06-14 12:19:13,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:13,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573965582] [2024-06-14 12:19:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:13,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:14,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:14,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:14,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573965582] [2024-06-14 12:19:14,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573965582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:14,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:14,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:14,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199490300] [2024-06-14 12:19:14,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:14,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:14,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:14,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:14,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:14,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:14,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 107 transitions, 852 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:14,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:14,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:14,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:15,195 INFO L124 PetriNetUnfolderBase]: 278/532 cut-off events. [2024-06-14 12:19:15,195 INFO L125 PetriNetUnfolderBase]: For 14720/14720 co-relation queries the response was YES. [2024-06-14 12:19:15,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2980 conditions, 532 events. 278/532 cut-off events. For 14720/14720 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2413 event pairs, 50 based on Foata normal form. 2/533 useless extension candidates. Maximal degree in co-relation 2914. Up to 447 conditions per place. [2024-06-14 12:19:15,198 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 93 selfloop transitions, 28 changer transitions 0/124 dead transitions. [2024-06-14 12:19:15,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 124 transitions, 1183 flow [2024-06-14 12:19:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:19:15,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:19:15,199 INFO L175 Difference]: Start difference. First operand has 132 places, 107 transitions, 852 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:19:15,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 124 transitions, 1183 flow [2024-06-14 12:19:15,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 124 transitions, 1146 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:15,218 INFO L231 Difference]: Finished difference. Result has 137 places, 113 transitions, 950 flow [2024-06-14 12:19:15,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=950, PETRI_PLACES=137, PETRI_TRANSITIONS=113} [2024-06-14 12:19:15,218 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-14 12:19:15,219 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 113 transitions, 950 flow [2024-06-14 12:19:15,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:15,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:15,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:15,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:19:15,219 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:15,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:15,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1690057591, now seen corresponding path program 6 times [2024-06-14 12:19:15,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:15,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122864744] [2024-06-14 12:19:15,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:15,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:16,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:16,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122864744] [2024-06-14 12:19:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122864744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:16,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437295247] [2024-06-14 12:19:16,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:16,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:16,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:16,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 113 transitions, 950 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:16,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:16,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:16,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:16,483 INFO L124 PetriNetUnfolderBase]: 289/549 cut-off events. [2024-06-14 12:19:16,483 INFO L125 PetriNetUnfolderBase]: For 17127/17127 co-relation queries the response was YES. [2024-06-14 12:19:16,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3267 conditions, 549 events. 289/549 cut-off events. For 17127/17127 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2480 event pairs, 47 based on Foata normal form. 2/550 useless extension candidates. Maximal degree in co-relation 3198. Up to 437 conditions per place. [2024-06-14 12:19:16,486 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 95 selfloop transitions, 30 changer transitions 0/128 dead transitions. [2024-06-14 12:19:16,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 128 transitions, 1336 flow [2024-06-14 12:19:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 12:19:16,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:19:16,488 INFO L175 Difference]: Start difference. First operand has 137 places, 113 transitions, 950 flow. Second operand 9 states and 112 transitions. [2024-06-14 12:19:16,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 128 transitions, 1336 flow [2024-06-14 12:19:16,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 128 transitions, 1287 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 12:19:16,508 INFO L231 Difference]: Finished difference. Result has 142 places, 115 transitions, 1003 flow [2024-06-14 12:19:16,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1003, PETRI_PLACES=142, PETRI_TRANSITIONS=115} [2024-06-14 12:19:16,508 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-14 12:19:16,509 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 115 transitions, 1003 flow [2024-06-14 12:19:16,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:16,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:16,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:16,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:19:16,509 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:16,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:16,509 INFO L85 PathProgramCache]: Analyzing trace with hash -51852667, now seen corresponding path program 1 times [2024-06-14 12:19:16,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:16,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83888681] [2024-06-14 12:19:16,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:16,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:17,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:17,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83888681] [2024-06-14 12:19:17,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83888681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:17,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:17,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:17,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939484745] [2024-06-14 12:19:17,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:17,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:17,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:17,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:17,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:17,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:17,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 115 transitions, 1003 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:17,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:17,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:17,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:17,720 INFO L124 PetriNetUnfolderBase]: 287/550 cut-off events. [2024-06-14 12:19:17,720 INFO L125 PetriNetUnfolderBase]: For 16654/16654 co-relation queries the response was YES. [2024-06-14 12:19:17,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3218 conditions, 550 events. 287/550 cut-off events. For 16654/16654 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2515 event pairs, 47 based on Foata normal form. 1/550 useless extension candidates. Maximal degree in co-relation 3148. Up to 469 conditions per place. [2024-06-14 12:19:17,723 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2024-06-14 12:19:17,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 130 transitions, 1325 flow [2024-06-14 12:19:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:19:17,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:19:17,732 INFO L175 Difference]: Start difference. First operand has 142 places, 115 transitions, 1003 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:19:17,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 130 transitions, 1325 flow [2024-06-14 12:19:17,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 130 transitions, 1272 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:17,768 INFO L231 Difference]: Finished difference. Result has 147 places, 117 transitions, 1049 flow [2024-06-14 12:19:17,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1049, PETRI_PLACES=147, PETRI_TRANSITIONS=117} [2024-06-14 12:19:17,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-14 12:19:17,769 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 117 transitions, 1049 flow [2024-06-14 12:19:17,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:17,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:17,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:17,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:19:17,770 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:17,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:17,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1839145526, now seen corresponding path program 1 times [2024-06-14 12:19:17,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:17,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175370223] [2024-06-14 12:19:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:17,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:18,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:18,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:18,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175370223] [2024-06-14 12:19:18,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175370223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:18,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:18,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:18,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444452443] [2024-06-14 12:19:18,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:18,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:18,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:18,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:18,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:18,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:18,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 117 transitions, 1049 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:18,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:18,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:18,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:19,005 INFO L124 PetriNetUnfolderBase]: 290/553 cut-off events. [2024-06-14 12:19:19,005 INFO L125 PetriNetUnfolderBase]: For 16326/16326 co-relation queries the response was YES. [2024-06-14 12:19:19,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3273 conditions, 553 events. 290/553 cut-off events. For 16326/16326 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2503 event pairs, 44 based on Foata normal form. 1/553 useless extension candidates. Maximal degree in co-relation 3201. Up to 485 conditions per place. [2024-06-14 12:19:19,008 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 108 selfloop transitions, 23 changer transitions 0/134 dead transitions. [2024-06-14 12:19:19,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 134 transitions, 1383 flow [2024-06-14 12:19:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:19,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:19:19,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 12:19:19,009 INFO L175 Difference]: Start difference. First operand has 147 places, 117 transitions, 1049 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:19:19,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 134 transitions, 1383 flow [2024-06-14 12:19:19,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 134 transitions, 1300 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:19,044 INFO L231 Difference]: Finished difference. Result has 151 places, 123 transitions, 1078 flow [2024-06-14 12:19:19,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1078, PETRI_PLACES=151, PETRI_TRANSITIONS=123} [2024-06-14 12:19:19,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-14 12:19:19,044 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 123 transitions, 1078 flow [2024-06-14 12:19:19,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:19,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:19,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:19,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:19:19,045 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:19,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:19,045 INFO L85 PathProgramCache]: Analyzing trace with hash 424501367, now seen corresponding path program 7 times [2024-06-14 12:19:19,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:19,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118782152] [2024-06-14 12:19:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:19,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:20,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:20,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118782152] [2024-06-14 12:19:20,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118782152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:20,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:20,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:20,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317397173] [2024-06-14 12:19:20,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:20,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:20,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:20,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:20,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:20,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:20,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 123 transitions, 1078 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:20,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:20,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:20,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:20,428 INFO L124 PetriNetUnfolderBase]: 294/563 cut-off events. [2024-06-14 12:19:20,428 INFO L125 PetriNetUnfolderBase]: For 18952/18952 co-relation queries the response was YES. [2024-06-14 12:19:20,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3369 conditions, 563 events. 294/563 cut-off events. For 18952/18952 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2584 event pairs, 42 based on Foata normal form. 2/564 useless extension candidates. Maximal degree in co-relation 3294. Up to 454 conditions per place. [2024-06-14 12:19:20,432 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 96 selfloop transitions, 37 changer transitions 0/136 dead transitions. [2024-06-14 12:19:20,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 136 transitions, 1415 flow [2024-06-14 12:19:20,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:19:20,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:19:20,433 INFO L175 Difference]: Start difference. First operand has 151 places, 123 transitions, 1078 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:19:20,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 136 transitions, 1415 flow [2024-06-14 12:19:20,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 136 transitions, 1331 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:20,469 INFO L231 Difference]: Finished difference. Result has 153 places, 126 transitions, 1122 flow [2024-06-14 12:19:20,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1122, PETRI_PLACES=153, PETRI_TRANSITIONS=126} [2024-06-14 12:19:20,470 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-14 12:19:20,470 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 126 transitions, 1122 flow [2024-06-14 12:19:20,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:20,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:20,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:20,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:19:20,471 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:20,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:20,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1944137929, now seen corresponding path program 8 times [2024-06-14 12:19:20,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:20,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195973900] [2024-06-14 12:19:20,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:20,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:21,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:21,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195973900] [2024-06-14 12:19:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195973900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:21,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:21,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:21,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574199673] [2024-06-14 12:19:21,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:21,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:21,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:21,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:21,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:21,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:21,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 126 transitions, 1122 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:21,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:21,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:21,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:21,778 INFO L124 PetriNetUnfolderBase]: 301/576 cut-off events. [2024-06-14 12:19:21,779 INFO L125 PetriNetUnfolderBase]: For 19894/19894 co-relation queries the response was YES. [2024-06-14 12:19:21,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3463 conditions, 576 events. 301/576 cut-off events. For 19894/19894 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2659 event pairs, 44 based on Foata normal form. 2/577 useless extension candidates. Maximal degree in co-relation 3388. Up to 466 conditions per place. [2024-06-14 12:19:21,782 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 100 selfloop transitions, 37 changer transitions 0/140 dead transitions. [2024-06-14 12:19:21,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 140 transitions, 1475 flow [2024-06-14 12:19:21,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:21,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 12:19:21,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:19:21,783 INFO L175 Difference]: Start difference. First operand has 153 places, 126 transitions, 1122 flow. Second operand 9 states and 111 transitions. [2024-06-14 12:19:21,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 140 transitions, 1475 flow [2024-06-14 12:19:21,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 140 transitions, 1375 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:21,817 INFO L231 Difference]: Finished difference. Result has 157 places, 131 transitions, 1170 flow [2024-06-14 12:19:21,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=157, PETRI_TRANSITIONS=131} [2024-06-14 12:19:21,818 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-14 12:19:21,818 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 131 transitions, 1170 flow [2024-06-14 12:19:21,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:21,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:21,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:21,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:19:21,819 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:21,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:21,819 INFO L85 PathProgramCache]: Analyzing trace with hash 860401575, now seen corresponding path program 9 times [2024-06-14 12:19:21,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:21,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412820042] [2024-06-14 12:19:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:21,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:22,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:22,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412820042] [2024-06-14 12:19:22,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412820042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:22,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:22,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:22,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080488198] [2024-06-14 12:19:22,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:22,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:22,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:22,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:22,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:22,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:22,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 131 transitions, 1170 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:22,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:22,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:22,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:23,237 INFO L124 PetriNetUnfolderBase]: 305/586 cut-off events. [2024-06-14 12:19:23,238 INFO L125 PetriNetUnfolderBase]: For 21079/21079 co-relation queries the response was YES. [2024-06-14 12:19:23,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3548 conditions, 586 events. 305/586 cut-off events. For 21079/21079 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2731 event pairs, 44 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 3471. Up to 445 conditions per place. [2024-06-14 12:19:23,241 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 100 selfloop transitions, 40 changer transitions 0/143 dead transitions. [2024-06-14 12:19:23,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 143 transitions, 1578 flow [2024-06-14 12:19:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 12:19:23,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 12:19:23,243 INFO L175 Difference]: Start difference. First operand has 157 places, 131 transitions, 1170 flow. Second operand 9 states and 113 transitions. [2024-06-14 12:19:23,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 143 transitions, 1578 flow [2024-06-14 12:19:23,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 143 transitions, 1497 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-14 12:19:23,297 INFO L231 Difference]: Finished difference. Result has 162 places, 132 transitions, 1197 flow [2024-06-14 12:19:23,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1197, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2024-06-14 12:19:23,299 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-14 12:19:23,299 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 1197 flow [2024-06-14 12:19:23,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:23,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:23,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:23,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:19:23,300 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:23,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash 865911825, now seen corresponding path program 10 times [2024-06-14 12:19:23,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:23,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111004310] [2024-06-14 12:19:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:23,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:24,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:24,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111004310] [2024-06-14 12:19:24,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111004310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:24,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:24,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:24,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021611849] [2024-06-14 12:19:24,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:24,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:24,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:24,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:24,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:24,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:24,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 1197 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:24,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:24,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:24,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:24,616 INFO L124 PetriNetUnfolderBase]: 302/585 cut-off events. [2024-06-14 12:19:24,616 INFO L125 PetriNetUnfolderBase]: For 20058/20058 co-relation queries the response was YES. [2024-06-14 12:19:24,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3403 conditions, 585 events. 302/585 cut-off events. For 20058/20058 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2752 event pairs, 45 based on Foata normal form. 2/586 useless extension candidates. Maximal degree in co-relation 3325. Up to 469 conditions per place. [2024-06-14 12:19:24,619 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 102 selfloop transitions, 36 changer transitions 0/141 dead transitions. [2024-06-14 12:19:24,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 141 transitions, 1493 flow [2024-06-14 12:19:24,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 12:19:24,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:19:24,620 INFO L175 Difference]: Start difference. First operand has 162 places, 132 transitions, 1197 flow. Second operand 9 states and 112 transitions. [2024-06-14 12:19:24,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 141 transitions, 1493 flow [2024-06-14 12:19:24,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 141 transitions, 1356 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:24,655 INFO L231 Difference]: Finished difference. Result has 163 places, 132 transitions, 1136 flow [2024-06-14 12:19:24,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1136, PETRI_PLACES=163, PETRI_TRANSITIONS=132} [2024-06-14 12:19:24,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-14 12:19:24,656 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 132 transitions, 1136 flow [2024-06-14 12:19:24,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:24,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:24,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:24,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:19:24,657 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:24,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2038989126, now seen corresponding path program 2 times [2024-06-14 12:19:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:24,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411658117] [2024-06-14 12:19:24,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:24,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:25,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:25,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411658117] [2024-06-14 12:19:25,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411658117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:25,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:25,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:25,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887474241] [2024-06-14 12:19:25,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:25,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:25,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:25,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:25,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:25,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 132 transitions, 1136 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:25,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:25,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:25,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:26,152 INFO L124 PetriNetUnfolderBase]: 308/589 cut-off events. [2024-06-14 12:19:26,152 INFO L125 PetriNetUnfolderBase]: For 20623/20623 co-relation queries the response was YES. [2024-06-14 12:19:26,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3326 conditions, 589 events. 308/589 cut-off events. For 20623/20623 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2742 event pairs, 53 based on Foata normal form. 2/590 useless extension candidates. Maximal degree in co-relation 3249. Up to 529 conditions per place. [2024-06-14 12:19:26,156 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 124 selfloop transitions, 18 changer transitions 0/145 dead transitions. [2024-06-14 12:19:26,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 145 transitions, 1492 flow [2024-06-14 12:19:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 12:19:26,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-14 12:19:26,166 INFO L175 Difference]: Start difference. First operand has 163 places, 132 transitions, 1136 flow. Second operand 10 states and 117 transitions. [2024-06-14 12:19:26,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 145 transitions, 1492 flow [2024-06-14 12:19:26,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 145 transitions, 1363 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:19:26,213 INFO L231 Difference]: Finished difference. Result has 162 places, 135 transitions, 1099 flow [2024-06-14 12:19:26,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1099, PETRI_PLACES=162, PETRI_TRANSITIONS=135} [2024-06-14 12:19:26,214 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-14 12:19:26,214 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 135 transitions, 1099 flow [2024-06-14 12:19:26,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:26,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:26,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:26,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:19:26,215 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:26,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:26,217 INFO L85 PathProgramCache]: Analyzing trace with hash 866127306, now seen corresponding path program 3 times [2024-06-14 12:19:26,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:26,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504573842] [2024-06-14 12:19:26,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:26,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:27,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:27,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504573842] [2024-06-14 12:19:27,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504573842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:27,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:27,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:27,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208813900] [2024-06-14 12:19:27,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:27,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:27,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:27,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:27,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:27,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 135 transitions, 1099 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:27,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:27,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:27,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:27,547 INFO L124 PetriNetUnfolderBase]: 311/600 cut-off events. [2024-06-14 12:19:27,547 INFO L125 PetriNetUnfolderBase]: For 20406/20406 co-relation queries the response was YES. [2024-06-14 12:19:27,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 600 events. 311/600 cut-off events. For 20406/20406 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2834 event pairs, 41 based on Foata normal form. 1/600 useless extension candidates. Maximal degree in co-relation 3223. Up to 482 conditions per place. [2024-06-14 12:19:27,551 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 34 changer transitions 0/156 dead transitions. [2024-06-14 12:19:27,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 156 transitions, 1517 flow [2024-06-14 12:19:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:27,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:19:27,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:19:27,552 INFO L175 Difference]: Start difference. First operand has 162 places, 135 transitions, 1099 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:19:27,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 156 transitions, 1517 flow [2024-06-14 12:19:27,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 156 transitions, 1448 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:27,592 INFO L231 Difference]: Finished difference. Result has 167 places, 145 transitions, 1212 flow [2024-06-14 12:19:27,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1212, PETRI_PLACES=167, PETRI_TRANSITIONS=145} [2024-06-14 12:19:27,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-14 12:19:27,593 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 145 transitions, 1212 flow [2024-06-14 12:19:27,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:27,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:27,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:27,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:19:27,593 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:27,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:27,594 INFO L85 PathProgramCache]: Analyzing trace with hash -658871636, now seen corresponding path program 4 times [2024-06-14 12:19:27,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:27,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639824619] [2024-06-14 12:19:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:27,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:28,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:28,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639824619] [2024-06-14 12:19:28,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639824619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:28,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:28,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:28,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036940889] [2024-06-14 12:19:28,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:28,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:28,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:28,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:28,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:28,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:28,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 145 transitions, 1212 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:28,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:28,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:28,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:28,863 INFO L124 PetriNetUnfolderBase]: 314/605 cut-off events. [2024-06-14 12:19:28,864 INFO L125 PetriNetUnfolderBase]: For 21192/21192 co-relation queries the response was YES. [2024-06-14 12:19:28,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 605 events. 314/605 cut-off events. For 21192/21192 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2869 event pairs, 41 based on Foata normal form. 1/605 useless extension candidates. Maximal degree in co-relation 3339. Up to 487 conditions per place. [2024-06-14 12:19:28,867 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 38 changer transitions 0/160 dead transitions. [2024-06-14 12:19:28,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 160 transitions, 1608 flow [2024-06-14 12:19:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:28,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:19:28,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 12:19:28,868 INFO L175 Difference]: Start difference. First operand has 167 places, 145 transitions, 1212 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:19:28,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 160 transitions, 1608 flow [2024-06-14 12:19:28,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 160 transitions, 1520 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:28,911 INFO L231 Difference]: Finished difference. Result has 173 places, 150 transitions, 1269 flow [2024-06-14 12:19:28,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1269, PETRI_PLACES=173, PETRI_TRANSITIONS=150} [2024-06-14 12:19:28,912 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-14 12:19:28,912 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 150 transitions, 1269 flow [2024-06-14 12:19:28,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:28,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:28,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:28,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:19:28,913 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:28,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:28,913 INFO L85 PathProgramCache]: Analyzing trace with hash -402371126, now seen corresponding path program 5 times [2024-06-14 12:19:28,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:28,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325673870] [2024-06-14 12:19:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:28,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:29,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:29,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325673870] [2024-06-14 12:19:29,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325673870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:29,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:29,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:29,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336932736] [2024-06-14 12:19:29,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:29,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:29,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:29,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:29,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:29,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:29,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 150 transitions, 1269 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:29,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:29,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:29,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:30,107 INFO L124 PetriNetUnfolderBase]: 317/608 cut-off events. [2024-06-14 12:19:30,108 INFO L125 PetriNetUnfolderBase]: For 21898/21898 co-relation queries the response was YES. [2024-06-14 12:19:30,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3495 conditions, 608 events. 317/608 cut-off events. For 21898/21898 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2868 event pairs, 41 based on Foata normal form. 1/608 useless extension candidates. Maximal degree in co-relation 3413. Up to 492 conditions per place. [2024-06-14 12:19:30,111 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 42 changer transitions 0/163 dead transitions. [2024-06-14 12:19:30,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 163 transitions, 1649 flow [2024-06-14 12:19:30,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:30,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:30,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:19:30,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:19:30,112 INFO L175 Difference]: Start difference. First operand has 173 places, 150 transitions, 1269 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:19:30,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 163 transitions, 1649 flow [2024-06-14 12:19:30,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 163 transitions, 1555 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:30,155 INFO L231 Difference]: Finished difference. Result has 178 places, 154 transitions, 1315 flow [2024-06-14 12:19:30,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1315, PETRI_PLACES=178, PETRI_TRANSITIONS=154} [2024-06-14 12:19:30,156 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-14 12:19:30,156 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 154 transitions, 1315 flow [2024-06-14 12:19:30,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:30,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:30,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:30,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:19:30,157 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:30,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:30,157 INFO L85 PathProgramCache]: Analyzing trace with hash 690740558, now seen corresponding path program 6 times [2024-06-14 12:19:30,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:30,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942737516] [2024-06-14 12:19:30,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:30,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:31,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:31,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942737516] [2024-06-14 12:19:31,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942737516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:31,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:31,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:31,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959508971] [2024-06-14 12:19:31,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:31,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:31,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:31,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:31,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:31,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:31,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 154 transitions, 1315 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:31,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:31,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:31,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:31,531 INFO L124 PetriNetUnfolderBase]: 315/605 cut-off events. [2024-06-14 12:19:31,531 INFO L125 PetriNetUnfolderBase]: For 21715/21715 co-relation queries the response was YES. [2024-06-14 12:19:31,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3478 conditions, 605 events. 315/605 cut-off events. For 21715/21715 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2858 event pairs, 49 based on Foata normal form. 1/605 useless extension candidates. Maximal degree in co-relation 3394. Up to 541 conditions per place. [2024-06-14 12:19:31,534 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 144 selfloop transitions, 21 changer transitions 0/168 dead transitions. [2024-06-14 12:19:31,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 168 transitions, 1709 flow [2024-06-14 12:19:31,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:19:31,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 12:19:31,535 INFO L175 Difference]: Start difference. First operand has 178 places, 154 transitions, 1315 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:19:31,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 168 transitions, 1709 flow [2024-06-14 12:19:31,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 168 transitions, 1592 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:31,572 INFO L231 Difference]: Finished difference. Result has 183 places, 158 transitions, 1304 flow [2024-06-14 12:19:31,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1304, PETRI_PLACES=183, PETRI_TRANSITIONS=158} [2024-06-14 12:19:31,573 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-14 12:19:31,573 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 158 transitions, 1304 flow [2024-06-14 12:19:31,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:31,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:31,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:31,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:19:31,573 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:19:31,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:31,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1560736127, now seen corresponding path program 11 times [2024-06-14 12:19:31,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:31,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89983060] [2024-06-14 12:19:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:31,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:32,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:32,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:32,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89983060] [2024-06-14 12:19:32,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89983060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:32,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:32,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:32,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383721024] [2024-06-14 12:19:32,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:32,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:32,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:32,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:32,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:32,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:32,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 158 transitions, 1304 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:32,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:32,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:32,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:32,764 INFO L124 PetriNetUnfolderBase]: 329/633 cut-off events. [2024-06-14 12:19:32,764 INFO L125 PetriNetUnfolderBase]: For 23709/23709 co-relation queries the response was YES. [2024-06-14 12:19:32,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3562 conditions, 633 events. 329/633 cut-off events. For 23709/23709 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3018 event pairs, 38 based on Foata normal form. 2/634 useless extension candidates. Maximal degree in co-relation 3476. Up to 551 conditions per place. [2024-06-14 12:19:32,768 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 23 changer transitions 0/180 dead transitions. [2024-06-14 12:19:32,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 180 transitions, 1753 flow [2024-06-14 12:19:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:32,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:19:32,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 12:19:32,769 INFO L175 Difference]: Start difference. First operand has 183 places, 158 transitions, 1304 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:19:32,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 180 transitions, 1753 flow [2024-06-14 12:19:32,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 180 transitions, 1699 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:19:32,811 INFO L231 Difference]: Finished difference. Result has 188 places, 165 transitions, 1373 flow [2024-06-14 12:19:32,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1373, PETRI_PLACES=188, PETRI_TRANSITIONS=165} [2024-06-14 12:19:32,811 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-14 12:19:32,811 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 165 transitions, 1373 flow [2024-06-14 12:19:32,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:32,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:32,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:32,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:19:32,812 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)] === [2024-06-14 12:19:32,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash -809157167, now seen corresponding path program 12 times [2024-06-14 12:19:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:32,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084192690] [2024-06-14 12:19:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:32,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:33,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:33,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084192690] [2024-06-14 12:19:33,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084192690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:33,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:33,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:33,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678935819] [2024-06-14 12:19:33,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:33,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:33,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:33,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:33,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:33,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:33,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 165 transitions, 1373 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:33,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:33,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:33,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:33,934 INFO L124 PetriNetUnfolderBase]: 326/628 cut-off events. [2024-06-14 12:19:33,934 INFO L125 PetriNetUnfolderBase]: For 22452/22452 co-relation queries the response was YES. [2024-06-14 12:19:33,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3486 conditions, 628 events. 326/628 cut-off events. For 22452/22452 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2992 event pairs, 37 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 3397. Up to 546 conditions per place. [2024-06-14 12:19:33,937 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 22 changer transitions 0/179 dead transitions. [2024-06-14 12:19:33,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 179 transitions, 1761 flow [2024-06-14 12:19:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:19:33,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 12:19:33,939 INFO L175 Difference]: Start difference. First operand has 188 places, 165 transitions, 1373 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:19:33,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 179 transitions, 1761 flow [2024-06-14 12:19:33,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 179 transitions, 1693 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:33,982 INFO L231 Difference]: Finished difference. Result has 192 places, 165 transitions, 1353 flow [2024-06-14 12:19:33,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1353, PETRI_PLACES=192, PETRI_TRANSITIONS=165} [2024-06-14 12:19:33,982 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-14 12:19:33,982 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 165 transitions, 1353 flow [2024-06-14 12:19:33,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:33,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:33,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:33,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:19:33,983 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)] === [2024-06-14 12:19:33,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash -775870793, now seen corresponding path program 13 times [2024-06-14 12:19:33,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:33,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808910703] [2024-06-14 12:19:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:33,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:34,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:34,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808910703] [2024-06-14 12:19:34,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808910703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:34,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:34,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756766196] [2024-06-14 12:19:34,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:34,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:34,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:34,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:34,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:34,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 165 transitions, 1353 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:34,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:34,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:34,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:35,217 INFO L124 PetriNetUnfolderBase]: 323/622 cut-off events. [2024-06-14 12:19:35,217 INFO L125 PetriNetUnfolderBase]: For 20816/20816 co-relation queries the response was YES. [2024-06-14 12:19:35,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 622 events. 323/622 cut-off events. For 20816/20816 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2964 event pairs, 38 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 3251. Up to 520 conditions per place. [2024-06-14 12:19:35,221 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 142 selfloop transitions, 34 changer transitions 0/179 dead transitions. [2024-06-14 12:19:35,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 179 transitions, 1744 flow [2024-06-14 12:19:35,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:35,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:19:35,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:19:35,222 INFO L175 Difference]: Start difference. First operand has 192 places, 165 transitions, 1353 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:19:35,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 179 transitions, 1744 flow [2024-06-14 12:19:35,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 179 transitions, 1641 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-14 12:19:35,266 INFO L231 Difference]: Finished difference. Result has 190 places, 165 transitions, 1322 flow [2024-06-14 12:19:35,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1322, PETRI_PLACES=190, PETRI_TRANSITIONS=165} [2024-06-14 12:19:35,266 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-14 12:19:35,266 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 165 transitions, 1322 flow [2024-06-14 12:19:35,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:35,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:35,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:35,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:19:35,267 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)] === [2024-06-14 12:19:35,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:35,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1125538546, now seen corresponding path program 1 times [2024-06-14 12:19:35,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:35,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068279750] [2024-06-14 12:19:35,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:35,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:36,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:36,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068279750] [2024-06-14 12:19:36,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068279750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:36,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:36,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:36,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578442894] [2024-06-14 12:19:36,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:36,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:36,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:36,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:36,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:36,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 165 transitions, 1322 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:36,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:36,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:36,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:36,484 INFO L124 PetriNetUnfolderBase]: 334/644 cut-off events. [2024-06-14 12:19:36,484 INFO L125 PetriNetUnfolderBase]: For 24076/24076 co-relation queries the response was YES. [2024-06-14 12:19:36,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3483 conditions, 644 events. 334/644 cut-off events. For 24076/24076 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3125 event pairs, 33 based on Foata normal form. 2/645 useless extension candidates. Maximal degree in co-relation 3397. Up to 506 conditions per place. [2024-06-14 12:19:36,488 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 147 selfloop transitions, 33 changer transitions 0/183 dead transitions. [2024-06-14 12:19:36,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 183 transitions, 1836 flow [2024-06-14 12:19:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:19:36,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:19:36,491 INFO L175 Difference]: Start difference. First operand has 190 places, 165 transitions, 1322 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:19:36,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 183 transitions, 1836 flow [2024-06-14 12:19:36,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 183 transitions, 1680 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 12:19:36,540 INFO L231 Difference]: Finished difference. Result has 189 places, 167 transitions, 1256 flow [2024-06-14 12:19:36,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1256, PETRI_PLACES=189, PETRI_TRANSITIONS=167} [2024-06-14 12:19:36,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-14 12:19:36,540 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 167 transitions, 1256 flow [2024-06-14 12:19:36,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:36,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:36,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:36,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:19:36,541 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)] === [2024-06-14 12:19:36,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:36,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1351077040, now seen corresponding path program 2 times [2024-06-14 12:19:36,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:36,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087777947] [2024-06-14 12:19:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:36,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:37,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:37,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087777947] [2024-06-14 12:19:37,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087777947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:37,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:37,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:37,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564225586] [2024-06-14 12:19:37,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:37,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:37,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:37,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:37,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:37,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 167 transitions, 1256 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:37,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:37,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:37,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:37,837 INFO L124 PetriNetUnfolderBase]: 331/641 cut-off events. [2024-06-14 12:19:37,837 INFO L125 PetriNetUnfolderBase]: For 22141/22141 co-relation queries the response was YES. [2024-06-14 12:19:37,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3306 conditions, 641 events. 331/641 cut-off events. For 22141/22141 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3099 event pairs, 37 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 3220. Up to 538 conditions per place. [2024-06-14 12:19:37,841 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 32 changer transitions 0/181 dead transitions. [2024-06-14 12:19:37,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 181 transitions, 1646 flow [2024-06-14 12:19:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:19:37,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:19:37,842 INFO L175 Difference]: Start difference. First operand has 189 places, 167 transitions, 1256 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:19:37,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 181 transitions, 1646 flow [2024-06-14 12:19:37,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 181 transitions, 1594 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:37,905 INFO L231 Difference]: Finished difference. Result has 193 places, 167 transitions, 1272 flow [2024-06-14 12:19:37,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1272, PETRI_PLACES=193, PETRI_TRANSITIONS=167} [2024-06-14 12:19:37,905 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-14 12:19:37,906 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 167 transitions, 1272 flow [2024-06-14 12:19:37,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:37,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:37,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:37,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:19:37,906 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)] === [2024-06-14 12:19:37,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:37,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1123747696, now seen corresponding path program 3 times [2024-06-14 12:19:37,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:37,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491374135] [2024-06-14 12:19:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:37,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:38,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:38,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491374135] [2024-06-14 12:19:38,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491374135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:38,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:38,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:38,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758514329] [2024-06-14 12:19:38,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:38,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:38,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:38,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:38,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:38,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:38,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 167 transitions, 1272 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:38,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:38,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:38,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:39,094 INFO L124 PetriNetUnfolderBase]: 335/649 cut-off events. [2024-06-14 12:19:39,094 INFO L125 PetriNetUnfolderBase]: For 23133/23133 co-relation queries the response was YES. [2024-06-14 12:19:39,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3378 conditions, 649 events. 335/649 cut-off events. For 23133/23133 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3157 event pairs, 32 based on Foata normal form. 2/650 useless extension candidates. Maximal degree in co-relation 3290. Up to 486 conditions per place. [2024-06-14 12:19:39,098 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 151 selfloop transitions, 30 changer transitions 0/184 dead transitions. [2024-06-14 12:19:39,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 184 transitions, 1682 flow [2024-06-14 12:19:39,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:39,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:19:39,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:19:39,099 INFO L175 Difference]: Start difference. First operand has 193 places, 167 transitions, 1272 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:19:39,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 184 transitions, 1682 flow [2024-06-14 12:19:39,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 184 transitions, 1612 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 12:19:39,157 INFO L231 Difference]: Finished difference. Result has 194 places, 168 transitions, 1278 flow [2024-06-14 12:19:39,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1278, PETRI_PLACES=194, PETRI_TRANSITIONS=168} [2024-06-14 12:19:39,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-14 12:19:39,158 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 168 transitions, 1278 flow [2024-06-14 12:19:39,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:39,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:39,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:39,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:19:39,158 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)] === [2024-06-14 12:19:39,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:39,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1181840146, now seen corresponding path program 4 times [2024-06-14 12:19:39,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:39,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495839136] [2024-06-14 12:19:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:39,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:40,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:40,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495839136] [2024-06-14 12:19:40,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495839136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:40,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:40,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:40,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573826597] [2024-06-14 12:19:40,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:40,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:40,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:40,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:40,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:40,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:40,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 168 transitions, 1278 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:40,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:40,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:40,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:40,395 INFO L124 PetriNetUnfolderBase]: 339/657 cut-off events. [2024-06-14 12:19:40,395 INFO L125 PetriNetUnfolderBase]: For 24014/24014 co-relation queries the response was YES. [2024-06-14 12:19:40,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3438 conditions, 657 events. 339/657 cut-off events. For 24014/24014 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3221 event pairs, 23 based on Foata normal form. 2/658 useless extension candidates. Maximal degree in co-relation 3349. Up to 537 conditions per place. [2024-06-14 12:19:40,398 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 162 selfloop transitions, 21 changer transitions 0/186 dead transitions. [2024-06-14 12:19:40,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 186 transitions, 1696 flow [2024-06-14 12:19:40,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:40,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:40,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:19:40,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:19:40,399 INFO L175 Difference]: Start difference. First operand has 194 places, 168 transitions, 1278 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:19:40,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 186 transitions, 1696 flow [2024-06-14 12:19:40,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 186 transitions, 1630 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:40,448 INFO L231 Difference]: Finished difference. Result has 196 places, 169 transitions, 1272 flow [2024-06-14 12:19:40,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1272, PETRI_PLACES=196, PETRI_TRANSITIONS=169} [2024-06-14 12:19:40,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-14 12:19:40,448 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 169 transitions, 1272 flow [2024-06-14 12:19:40,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:40,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:40,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:40,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:19:40,449 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)] === [2024-06-14 12:19:40,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:40,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1179181796, now seen corresponding path program 5 times [2024-06-14 12:19:40,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:40,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497143264] [2024-06-14 12:19:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:40,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:41,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:41,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497143264] [2024-06-14 12:19:41,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497143264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:41,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:41,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:41,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854121479] [2024-06-14 12:19:41,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:41,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:41,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:41,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:41,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:41,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:41,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 169 transitions, 1272 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:41,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:41,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:41,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:41,778 INFO L124 PetriNetUnfolderBase]: 346/670 cut-off events. [2024-06-14 12:19:41,778 INFO L125 PetriNetUnfolderBase]: For 25092/25092 co-relation queries the response was YES. [2024-06-14 12:19:41,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3496 conditions, 670 events. 346/670 cut-off events. For 25092/25092 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3298 event pairs, 42 based on Foata normal form. 2/671 useless extension candidates. Maximal degree in co-relation 3406. Up to 561 conditions per place. [2024-06-14 12:19:41,782 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 148 selfloop transitions, 33 changer transitions 0/184 dead transitions. [2024-06-14 12:19:41,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 184 transitions, 1691 flow [2024-06-14 12:19:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:41,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:19:41,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:19:41,783 INFO L175 Difference]: Start difference. First operand has 196 places, 169 transitions, 1272 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:19:41,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 184 transitions, 1691 flow [2024-06-14 12:19:41,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 184 transitions, 1641 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:41,833 INFO L231 Difference]: Finished difference. Result has 198 places, 172 transitions, 1323 flow [2024-06-14 12:19:41,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1323, PETRI_PLACES=198, PETRI_TRANSITIONS=172} [2024-06-14 12:19:41,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-14 12:19:41,834 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 172 transitions, 1323 flow [2024-06-14 12:19:41,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:41,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:41,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:41,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:19:41,834 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)] === [2024-06-14 12:19:41,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:41,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1185437906, now seen corresponding path program 6 times [2024-06-14 12:19:41,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:41,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809391379] [2024-06-14 12:19:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:41,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:42,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:42,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809391379] [2024-06-14 12:19:42,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809391379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:42,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:42,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:42,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038548391] [2024-06-14 12:19:42,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:42,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:42,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:42,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:42,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:42,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:42,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 172 transitions, 1323 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:42,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:42,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:42,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:43,207 INFO L124 PetriNetUnfolderBase]: 353/683 cut-off events. [2024-06-14 12:19:43,207 INFO L125 PetriNetUnfolderBase]: For 26018/26018 co-relation queries the response was YES. [2024-06-14 12:19:43,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3593 conditions, 683 events. 353/683 cut-off events. For 26018/26018 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3395 event pairs, 44 based on Foata normal form. 2/684 useless extension candidates. Maximal degree in co-relation 3502. Up to 573 conditions per place. [2024-06-14 12:19:43,212 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 151 selfloop transitions, 33 changer transitions 0/187 dead transitions. [2024-06-14 12:19:43,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 187 transitions, 1754 flow [2024-06-14 12:19:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:43,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:19:43,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 12:19:43,213 INFO L175 Difference]: Start difference. First operand has 198 places, 172 transitions, 1323 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:19:43,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 187 transitions, 1754 flow [2024-06-14 12:19:43,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 187 transitions, 1674 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:19:43,264 INFO L231 Difference]: Finished difference. Result has 201 places, 175 transitions, 1350 flow [2024-06-14 12:19:43,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1350, PETRI_PLACES=201, PETRI_TRANSITIONS=175} [2024-06-14 12:19:43,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-14 12:19:43,265 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 175 transitions, 1350 flow [2024-06-14 12:19:43,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:43,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:43,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:43,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:19:43,265 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)] === [2024-06-14 12:19:43,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:43,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1185615536, now seen corresponding path program 7 times [2024-06-14 12:19:43,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:43,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156917045] [2024-06-14 12:19:43,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:43,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:44,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:44,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156917045] [2024-06-14 12:19:44,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156917045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:44,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:44,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640689392] [2024-06-14 12:19:44,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:44,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:44,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:44,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:44,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:44,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:44,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 175 transitions, 1350 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:44,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:44,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:44,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:44,607 INFO L124 PetriNetUnfolderBase]: 357/691 cut-off events. [2024-06-14 12:19:44,608 INFO L125 PetriNetUnfolderBase]: For 27026/27026 co-relation queries the response was YES. [2024-06-14 12:19:44,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3641 conditions, 691 events. 357/691 cut-off events. For 27026/27026 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3452 event pairs, 42 based on Foata normal form. 2/692 useless extension candidates. Maximal degree in co-relation 3549. Up to 551 conditions per place. [2024-06-14 12:19:44,612 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 151 selfloop transitions, 35 changer transitions 0/189 dead transitions. [2024-06-14 12:19:44,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 189 transitions, 1770 flow [2024-06-14 12:19:44,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:19:44,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:19:44,613 INFO L175 Difference]: Start difference. First operand has 201 places, 175 transitions, 1350 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:19:44,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 189 transitions, 1770 flow [2024-06-14 12:19:44,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 189 transitions, 1706 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:44,669 INFO L231 Difference]: Finished difference. Result has 205 places, 176 transitions, 1381 flow [2024-06-14 12:19:44,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1381, PETRI_PLACES=205, PETRI_TRANSITIONS=176} [2024-06-14 12:19:44,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-14 12:19:44,669 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 176 transitions, 1381 flow [2024-06-14 12:19:44,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:44,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:44,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:44,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:19:44,670 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)] === [2024-06-14 12:19:44,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:44,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1356313316, now seen corresponding path program 8 times [2024-06-14 12:19:44,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:44,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164241669] [2024-06-14 12:19:44,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:44,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:45,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:45,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164241669] [2024-06-14 12:19:45,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164241669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:45,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:45,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:45,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354138516] [2024-06-14 12:19:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:45,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:45,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:45,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:45,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:45,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:45,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 176 transitions, 1381 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:45,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:45,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:45,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:46,126 INFO L124 PetriNetUnfolderBase]: 361/699 cut-off events. [2024-06-14 12:19:46,127 INFO L125 PetriNetUnfolderBase]: For 28081/28081 co-relation queries the response was YES. [2024-06-14 12:19:46,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3715 conditions, 699 events. 361/699 cut-off events. For 28081/28081 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3503 event pairs, 46 based on Foata normal form. 2/700 useless extension candidates. Maximal degree in co-relation 3622. Up to 589 conditions per place. [2024-06-14 12:19:46,132 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 154 selfloop transitions, 32 changer transitions 0/189 dead transitions. [2024-06-14 12:19:46,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 189 transitions, 1801 flow [2024-06-14 12:19:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:19:46,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 12:19:46,134 INFO L175 Difference]: Start difference. First operand has 205 places, 176 transitions, 1381 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:19:46,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 189 transitions, 1801 flow [2024-06-14 12:19:46,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 189 transitions, 1718 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:46,224 INFO L231 Difference]: Finished difference. Result has 207 places, 177 transitions, 1388 flow [2024-06-14 12:19:46,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1388, PETRI_PLACES=207, PETRI_TRANSITIONS=177} [2024-06-14 12:19:46,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-14 12:19:46,225 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 177 transitions, 1388 flow [2024-06-14 12:19:46,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:46,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:46,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:46,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:19:46,225 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)] === [2024-06-14 12:19:46,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:46,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1356317966, now seen corresponding path program 9 times [2024-06-14 12:19:46,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:46,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721231971] [2024-06-14 12:19:46,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:46,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:47,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:47,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721231971] [2024-06-14 12:19:47,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721231971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:47,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:47,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:47,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166708530] [2024-06-14 12:19:47,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:47,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:47,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:47,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:47,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:47,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:47,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 177 transitions, 1388 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:47,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:47,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:47,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:47,612 INFO L124 PetriNetUnfolderBase]: 365/707 cut-off events. [2024-06-14 12:19:47,613 INFO L125 PetriNetUnfolderBase]: For 29071/29071 co-relation queries the response was YES. [2024-06-14 12:19:47,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3761 conditions, 707 events. 365/707 cut-off events. For 29071/29071 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3564 event pairs, 46 based on Foata normal form. 2/708 useless extension candidates. Maximal degree in co-relation 3667. Up to 581 conditions per place. [2024-06-14 12:19:47,618 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 156 selfloop transitions, 32 changer transitions 0/191 dead transitions. [2024-06-14 12:19:47,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 191 transitions, 1816 flow [2024-06-14 12:19:47,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:47,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:47,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:19:47,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:19:47,619 INFO L175 Difference]: Start difference. First operand has 207 places, 177 transitions, 1388 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:19:47,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 191 transitions, 1816 flow [2024-06-14 12:19:47,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 191 transitions, 1710 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 12:19:47,683 INFO L231 Difference]: Finished difference. Result has 207 places, 178 transitions, 1374 flow [2024-06-14 12:19:47,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1374, PETRI_PLACES=207, PETRI_TRANSITIONS=178} [2024-06-14 12:19:47,684 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-14 12:19:47,684 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 178 transitions, 1374 flow [2024-06-14 12:19:47,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:47,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:47,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:47,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:19:47,684 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)] === [2024-06-14 12:19:47,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:47,685 INFO L85 PathProgramCache]: Analyzing trace with hash 689363088, now seen corresponding path program 10 times [2024-06-14 12:19:47,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:47,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623013527] [2024-06-14 12:19:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:47,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:48,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:48,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623013527] [2024-06-14 12:19:48,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623013527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:48,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:48,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:19:48,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999974168] [2024-06-14 12:19:48,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:48,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:19:48,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:48,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:19:48,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:19:48,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:48,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 178 transitions, 1374 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:48,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:48,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:48,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:49,091 INFO L124 PetriNetUnfolderBase]: 413/801 cut-off events. [2024-06-14 12:19:49,091 INFO L125 PetriNetUnfolderBase]: For 30457/30457 co-relation queries the response was YES. [2024-06-14 12:19:49,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4120 conditions, 801 events. 413/801 cut-off events. For 30457/30457 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4211 event pairs, 51 based on Foata normal form. 2/802 useless extension candidates. Maximal degree in co-relation 4026. Up to 648 conditions per place. [2024-06-14 12:19:49,096 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 174 selfloop transitions, 32 changer transitions 0/209 dead transitions. [2024-06-14 12:19:49,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 209 transitions, 1980 flow [2024-06-14 12:19:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:19:49,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:19:49,098 INFO L175 Difference]: Start difference. First operand has 207 places, 178 transitions, 1374 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:19:49,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 209 transitions, 1980 flow [2024-06-14 12:19:49,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 209 transitions, 1856 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:49,170 INFO L231 Difference]: Finished difference. Result has 214 places, 195 transitions, 1542 flow [2024-06-14 12:19:49,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1542, PETRI_PLACES=214, PETRI_TRANSITIONS=195} [2024-06-14 12:19:49,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-14 12:19:49,171 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 195 transitions, 1542 flow [2024-06-14 12:19:49,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:49,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:49,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:49,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:19:49,171 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)] === [2024-06-14 12:19:49,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1607431782, now seen corresponding path program 1 times [2024-06-14 12:19:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:49,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512153483] [2024-06-14 12:19:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:49,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:50,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:50,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512153483] [2024-06-14 12:19:50,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512153483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:50,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:50,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:50,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481363511] [2024-06-14 12:19:50,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:50,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:50,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:50,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:50,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:50,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:50,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 195 transitions, 1542 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:50,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:50,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:50,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:50,732 INFO L124 PetriNetUnfolderBase]: 416/806 cut-off events. [2024-06-14 12:19:50,732 INFO L125 PetriNetUnfolderBase]: For 29621/29621 co-relation queries the response was YES. [2024-06-14 12:19:50,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4208 conditions, 806 events. 416/806 cut-off events. For 29621/29621 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4232 event pairs, 50 based on Foata normal form. 1/806 useless extension candidates. Maximal degree in co-relation 4109. Up to 701 conditions per place. [2024-06-14 12:19:50,738 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 173 selfloop transitions, 35 changer transitions 0/211 dead transitions. [2024-06-14 12:19:50,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 211 transitions, 2038 flow [2024-06-14 12:19:50,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:50,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 12:19:50,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 12:19:50,739 INFO L175 Difference]: Start difference. First operand has 214 places, 195 transitions, 1542 flow. Second operand 11 states and 131 transitions. [2024-06-14 12:19:50,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 211 transitions, 2038 flow [2024-06-14 12:19:50,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 211 transitions, 1985 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:50,812 INFO L231 Difference]: Finished difference. Result has 220 places, 197 transitions, 1614 flow [2024-06-14 12:19:50,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1614, PETRI_PLACES=220, PETRI_TRANSITIONS=197} [2024-06-14 12:19:50,812 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-14 12:19:50,813 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 197 transitions, 1614 flow [2024-06-14 12:19:50,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:50,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:50,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:50,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:19:50,813 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)] === [2024-06-14 12:19:50,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:50,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1185430962, now seen corresponding path program 2 times [2024-06-14 12:19:50,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:50,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701597768] [2024-06-14 12:19:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:50,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:51,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:51,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701597768] [2024-06-14 12:19:51,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701597768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:51,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:51,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100897137] [2024-06-14 12:19:51,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:51,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:51,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:51,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:51,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:52,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:52,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 197 transitions, 1614 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:52,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:52,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:52,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:52,539 INFO L124 PetriNetUnfolderBase]: 425/821 cut-off events. [2024-06-14 12:19:52,539 INFO L125 PetriNetUnfolderBase]: For 30595/30595 co-relation queries the response was YES. [2024-06-14 12:19:52,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4321 conditions, 821 events. 425/821 cut-off events. For 30595/30595 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4336 event pairs, 53 based on Foata normal form. 1/821 useless extension candidates. Maximal degree in co-relation 4221. Up to 684 conditions per place. [2024-06-14 12:19:52,545 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 44 changer transitions 0/215 dead transitions. [2024-06-14 12:19:52,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 215 transitions, 2140 flow [2024-06-14 12:19:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:52,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:52,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:19:52,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:19:52,546 INFO L175 Difference]: Start difference. First operand has 220 places, 197 transitions, 1614 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:19:52,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 215 transitions, 2140 flow [2024-06-14 12:19:52,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 215 transitions, 2031 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 12:19:52,617 INFO L231 Difference]: Finished difference. Result has 222 places, 203 transitions, 1676 flow [2024-06-14 12:19:52,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1676, PETRI_PLACES=222, PETRI_TRANSITIONS=203} [2024-06-14 12:19:52,617 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-14 12:19:52,617 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 203 transitions, 1676 flow [2024-06-14 12:19:52,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:52,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:52,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:52,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:19:52,618 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)] === [2024-06-14 12:19:52,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:52,618 INFO L85 PathProgramCache]: Analyzing trace with hash 866621522, now seen corresponding path program 3 times [2024-06-14 12:19:52,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466951663] [2024-06-14 12:19:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:52,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:53,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:53,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466951663] [2024-06-14 12:19:53,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466951663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:53,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:53,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:53,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334531970] [2024-06-14 12:19:53,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:53,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:53,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:53,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:53,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:53,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:53,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 203 transitions, 1676 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:53,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:53,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:53,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:54,243 INFO L124 PetriNetUnfolderBase]: 431/833 cut-off events. [2024-06-14 12:19:54,244 INFO L125 PetriNetUnfolderBase]: For 32143/32143 co-relation queries the response was YES. [2024-06-14 12:19:54,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4420 conditions, 833 events. 431/833 cut-off events. For 32143/32143 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4427 event pairs, 53 based on Foata normal form. 1/833 useless extension candidates. Maximal degree in co-relation 4319. Up to 693 conditions per place. [2024-06-14 12:19:54,250 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 48 changer transitions 0/219 dead transitions. [2024-06-14 12:19:54,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 219 transitions, 2206 flow [2024-06-14 12:19:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:54,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:54,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:19:54,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:19:54,251 INFO L175 Difference]: Start difference. First operand has 222 places, 203 transitions, 1676 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:19:54,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 219 transitions, 2206 flow [2024-06-14 12:19:54,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 219 transitions, 2100 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:54,325 INFO L231 Difference]: Finished difference. Result has 227 places, 207 transitions, 1745 flow [2024-06-14 12:19:54,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1745, PETRI_PLACES=227, PETRI_TRANSITIONS=207} [2024-06-14 12:19:54,325 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-14 12:19:54,325 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 207 transitions, 1745 flow [2024-06-14 12:19:54,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:54,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:54,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:54,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:19:54,326 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)] === [2024-06-14 12:19:54,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:54,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1615903756, now seen corresponding path program 4 times [2024-06-14 12:19:54,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:54,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745652280] [2024-06-14 12:19:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:54,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:55,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:55,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745652280] [2024-06-14 12:19:55,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745652280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:55,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:55,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:55,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656120625] [2024-06-14 12:19:55,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:55,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:55,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:55,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:55,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:55,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:55,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 207 transitions, 1745 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:55,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:55,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:55,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:56,069 INFO L124 PetriNetUnfolderBase]: 434/840 cut-off events. [2024-06-14 12:19:56,070 INFO L125 PetriNetUnfolderBase]: For 33408/33408 co-relation queries the response was YES. [2024-06-14 12:19:56,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4500 conditions, 840 events. 434/840 cut-off events. For 33408/33408 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4480 event pairs, 53 based on Foata normal form. 1/840 useless extension candidates. Maximal degree in co-relation 4398. Up to 698 conditions per place. [2024-06-14 12:19:56,076 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 46 changer transitions 0/221 dead transitions. [2024-06-14 12:19:56,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 221 transitions, 2267 flow [2024-06-14 12:19:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:19:56,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:19:56,077 INFO L175 Difference]: Start difference. First operand has 227 places, 207 transitions, 1745 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:19:56,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 221 transitions, 2267 flow [2024-06-14 12:19:56,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 221 transitions, 2140 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-14 12:19:56,150 INFO L231 Difference]: Finished difference. Result has 231 places, 209 transitions, 1777 flow [2024-06-14 12:19:56,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1618, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1777, PETRI_PLACES=231, PETRI_TRANSITIONS=209} [2024-06-14 12:19:56,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-14 12:19:56,151 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 209 transitions, 1777 flow [2024-06-14 12:19:56,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:56,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:56,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:56,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:19:56,151 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)] === [2024-06-14 12:19:56,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:56,152 INFO L85 PathProgramCache]: Analyzing trace with hash 866860532, now seen corresponding path program 5 times [2024-06-14 12:19:56,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:56,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77419029] [2024-06-14 12:19:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:56,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:57,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:57,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77419029] [2024-06-14 12:19:57,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77419029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:57,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:57,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:57,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949963253] [2024-06-14 12:19:57,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:57,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:57,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:57,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:57,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:57,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:57,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 209 transitions, 1777 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:57,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:57,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:57,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:57,803 INFO L124 PetriNetUnfolderBase]: 442/853 cut-off events. [2024-06-14 12:19:57,803 INFO L125 PetriNetUnfolderBase]: For 37040/37040 co-relation queries the response was YES. [2024-06-14 12:19:57,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4733 conditions, 853 events. 442/853 cut-off events. For 37040/37040 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4561 event pairs, 53 based on Foata normal form. 1/853 useless extension candidates. Maximal degree in co-relation 4630. Up to 695 conditions per place. [2024-06-14 12:19:57,809 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 61 changer transitions 0/226 dead transitions. [2024-06-14 12:19:57,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 226 transitions, 2505 flow [2024-06-14 12:19:57,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:57,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:19:57,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:19:57,810 INFO L175 Difference]: Start difference. First operand has 231 places, 209 transitions, 1777 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:19:57,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 226 transitions, 2505 flow [2024-06-14 12:19:57,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 226 transitions, 2326 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-14 12:19:57,888 INFO L231 Difference]: Finished difference. Result has 231 places, 213 transitions, 1853 flow [2024-06-14 12:19:57,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1853, PETRI_PLACES=231, PETRI_TRANSITIONS=213} [2024-06-14 12:19:57,889 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-14 12:19:57,889 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 213 transitions, 1853 flow [2024-06-14 12:19:57,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:57,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:57,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:57,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:19:57,890 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)] === [2024-06-14 12:19:57,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:57,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1178935532, now seen corresponding path program 1 times [2024-06-14 12:19:57,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:57,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606472559] [2024-06-14 12:19:57,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:57,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:58,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:58,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606472559] [2024-06-14 12:19:58,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606472559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:58,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:58,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:19:58,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795312330] [2024-06-14 12:19:58,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:58,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:19:58,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:19:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:19:58,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:19:58,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 213 transitions, 1853 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:58,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:58,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:19:58,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:59,273 INFO L124 PetriNetUnfolderBase]: 446/861 cut-off events. [2024-06-14 12:19:59,274 INFO L125 PetriNetUnfolderBase]: For 40176/40176 co-relation queries the response was YES. [2024-06-14 12:19:59,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 861 events. 446/861 cut-off events. For 40176/40176 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4618 event pairs, 53 based on Foata normal form. 2/862 useless extension candidates. Maximal degree in co-relation 4670. Up to 767 conditions per place. [2024-06-14 12:19:59,281 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 27 changer transitions 0/227 dead transitions. [2024-06-14 12:19:59,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 227 transitions, 2347 flow [2024-06-14 12:19:59,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:19:59,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:19:59,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 12:19:59,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 12:19:59,283 INFO L175 Difference]: Start difference. First operand has 231 places, 213 transitions, 1853 flow. Second operand 11 states and 128 transitions. [2024-06-14 12:19:59,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 227 transitions, 2347 flow [2024-06-14 12:19:59,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 227 transitions, 2213 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-14 12:19:59,370 INFO L231 Difference]: Finished difference. Result has 235 places, 214 transitions, 1795 flow [2024-06-14 12:19:59,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1795, PETRI_PLACES=235, PETRI_TRANSITIONS=214} [2024-06-14 12:19:59,370 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-14 12:19:59,370 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 214 transitions, 1795 flow [2024-06-14 12:19:59,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:59,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:59,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:59,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:19:59,371 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)] === [2024-06-14 12:19:59,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:59,371 INFO L85 PathProgramCache]: Analyzing trace with hash 866852162, now seen corresponding path program 6 times [2024-06-14 12:19:59,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:59,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058275398] [2024-06-14 12:19:59,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:59,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:00,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:00,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058275398] [2024-06-14 12:20:00,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058275398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:00,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:00,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:00,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171782905] [2024-06-14 12:20:00,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:00,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:00,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:00,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:00,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:00,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:00,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 214 transitions, 1795 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:00,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:00,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:00,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:00,894 INFO L124 PetriNetUnfolderBase]: 444/858 cut-off events. [2024-06-14 12:20:00,894 INFO L125 PetriNetUnfolderBase]: For 36269/36269 co-relation queries the response was YES. [2024-06-14 12:20:00,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4646 conditions, 858 events. 444/858 cut-off events. For 36269/36269 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4601 event pairs, 53 based on Foata normal form. 1/858 useless extension candidates. Maximal degree in co-relation 4541. Up to 716 conditions per place. [2024-06-14 12:20:00,901 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 52 changer transitions 0/226 dead transitions. [2024-06-14 12:20:00,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 226 transitions, 2269 flow [2024-06-14 12:20:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:00,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:00,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:20:00,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:20:00,902 INFO L175 Difference]: Start difference. First operand has 235 places, 214 transitions, 1795 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:20:00,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 226 transitions, 2269 flow [2024-06-14 12:20:01,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 226 transitions, 2163 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:01,004 INFO L231 Difference]: Finished difference. Result has 237 places, 214 transitions, 1798 flow [2024-06-14 12:20:01,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1798, PETRI_PLACES=237, PETRI_TRANSITIONS=214} [2024-06-14 12:20:01,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-14 12:20:01,005 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 214 transitions, 1798 flow [2024-06-14 12:20:01,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:01,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:01,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:01,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:20:01,006 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)] === [2024-06-14 12:20:01,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:01,006 INFO L85 PathProgramCache]: Analyzing trace with hash 959542510, now seen corresponding path program 11 times [2024-06-14 12:20:01,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:01,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25178950] [2024-06-14 12:20:01,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:01,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:01,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:01,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25178950] [2024-06-14 12:20:01,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25178950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:01,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:01,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:01,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136452511] [2024-06-14 12:20:01,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:01,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:01,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:01,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:01,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:02,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:02,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 214 transitions, 1798 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:02,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:02,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:02,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:02,507 INFO L124 PetriNetUnfolderBase]: 451/874 cut-off events. [2024-06-14 12:20:02,507 INFO L125 PetriNetUnfolderBase]: For 39504/39504 co-relation queries the response was YES. [2024-06-14 12:20:02,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4739 conditions, 874 events. 451/874 cut-off events. For 39504/39504 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4718 event pairs, 58 based on Foata normal form. 2/875 useless extension candidates. Maximal degree in co-relation 4633. Up to 694 conditions per place. [2024-06-14 12:20:02,514 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 168 selfloop transitions, 56 changer transitions 0/227 dead transitions. [2024-06-14 12:20:02,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 227 transitions, 2309 flow [2024-06-14 12:20:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:20:02,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:20:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:20:02,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:20:02,515 INFO L175 Difference]: Start difference. First operand has 237 places, 214 transitions, 1798 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:20:02,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 227 transitions, 2309 flow [2024-06-14 12:20:02,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 227 transitions, 2156 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-14 12:20:02,628 INFO L231 Difference]: Finished difference. Result has 236 places, 217 transitions, 1804 flow [2024-06-14 12:20:02,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1804, PETRI_PLACES=236, PETRI_TRANSITIONS=217} [2024-06-14 12:20:02,628 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-14 12:20:02,628 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 217 transitions, 1804 flow [2024-06-14 12:20:02,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:02,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:02,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:02,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:20:02,629 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)] === [2024-06-14 12:20:02,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:02,629 INFO L85 PathProgramCache]: Analyzing trace with hash 138734488, now seen corresponding path program 12 times [2024-06-14 12:20:02,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:02,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503348231] [2024-06-14 12:20:02,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:02,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:03,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:03,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503348231] [2024-06-14 12:20:03,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503348231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:03,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:03,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:03,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039724811] [2024-06-14 12:20:03,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:03,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:03,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:03,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:03,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:03,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:03,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 217 transitions, 1804 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:03,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:03,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:03,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:04,088 INFO L124 PetriNetUnfolderBase]: 455/876 cut-off events. [2024-06-14 12:20:04,088 INFO L125 PetriNetUnfolderBase]: For 40956/40956 co-relation queries the response was YES. [2024-06-14 12:20:04,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4794 conditions, 876 events. 455/876 cut-off events. For 40956/40956 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4712 event pairs, 58 based on Foata normal form. 2/877 useless extension candidates. Maximal degree in co-relation 4687. Up to 688 conditions per place. [2024-06-14 12:20:04,094 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 169 selfloop transitions, 57 changer transitions 0/229 dead transitions. [2024-06-14 12:20:04,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 229 transitions, 2308 flow [2024-06-14 12:20:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:20:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:20:04,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:20:04,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 12:20:04,096 INFO L175 Difference]: Start difference. First operand has 236 places, 217 transitions, 1804 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:20:04,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 229 transitions, 2308 flow [2024-06-14 12:20:04,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 229 transitions, 2180 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:04,201 INFO L231 Difference]: Finished difference. Result has 237 places, 218 transitions, 1824 flow [2024-06-14 12:20:04,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1824, PETRI_PLACES=237, PETRI_TRANSITIONS=218} [2024-06-14 12:20:04,202 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-14 12:20:04,202 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 218 transitions, 1824 flow [2024-06-14 12:20:04,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:04,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:04,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:04,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:20:04,202 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)] === [2024-06-14 12:20:04,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:04,203 INFO L85 PathProgramCache]: Analyzing trace with hash 134150518, now seen corresponding path program 13 times [2024-06-14 12:20:04,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:04,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338220823] [2024-06-14 12:20:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:04,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:05,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338220823] [2024-06-14 12:20:05,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338220823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:05,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:05,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:05,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484025169] [2024-06-14 12:20:05,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:05,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:05,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:05,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:05,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:05,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:05,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 218 transitions, 1824 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:05,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:05,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:05,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:05,548 INFO L124 PetriNetUnfolderBase]: 466/899 cut-off events. [2024-06-14 12:20:05,548 INFO L125 PetriNetUnfolderBase]: For 47409/47409 co-relation queries the response was YES. [2024-06-14 12:20:05,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5088 conditions, 899 events. 466/899 cut-off events. For 47409/47409 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4871 event pairs, 59 based on Foata normal form. 2/900 useless extension candidates. Maximal degree in co-relation 4984. Up to 654 conditions per place. [2024-06-14 12:20:05,555 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 171 selfloop transitions, 59 changer transitions 0/233 dead transitions. [2024-06-14 12:20:05,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 233 transitions, 2510 flow [2024-06-14 12:20:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:20:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:20:05,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:20:05,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 12:20:05,556 INFO L175 Difference]: Start difference. First operand has 237 places, 218 transitions, 1824 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:20:05,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 233 transitions, 2510 flow [2024-06-14 12:20:05,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 233 transitions, 2372 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:20:05,675 INFO L231 Difference]: Finished difference. Result has 239 places, 220 transitions, 1870 flow [2024-06-14 12:20:05,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1870, PETRI_PLACES=239, PETRI_TRANSITIONS=220} [2024-06-14 12:20:05,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-14 12:20:05,676 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 220 transitions, 1870 flow [2024-06-14 12:20:05,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:05,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:05,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:05,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:20:05,676 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)] === [2024-06-14 12:20:05,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash 305145898, now seen corresponding path program 14 times [2024-06-14 12:20:05,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:05,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152602251] [2024-06-14 12:20:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:05,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:06,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:06,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152602251] [2024-06-14 12:20:06,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152602251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:06,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:06,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573739642] [2024-06-14 12:20:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:06,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:06,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:06,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:06,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:06,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:06,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 220 transitions, 1870 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:06,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:06,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:06,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:07,247 INFO L124 PetriNetUnfolderBase]: 473/910 cut-off events. [2024-06-14 12:20:07,247 INFO L125 PetriNetUnfolderBase]: For 48991/48991 co-relation queries the response was YES. [2024-06-14 12:20:07,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5180 conditions, 910 events. 473/910 cut-off events. For 48991/48991 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4941 event pairs, 63 based on Foata normal form. 2/911 useless extension candidates. Maximal degree in co-relation 5075. Up to 735 conditions per place. [2024-06-14 12:20:07,254 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 175 selfloop transitions, 55 changer transitions 0/233 dead transitions. [2024-06-14 12:20:07,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 233 transitions, 2403 flow [2024-06-14 12:20:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:20:07,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:20:07,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:20:07,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 12:20:07,255 INFO L175 Difference]: Start difference. First operand has 239 places, 220 transitions, 1870 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:20:07,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 233 transitions, 2403 flow [2024-06-14 12:20:07,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 233 transitions, 2297 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-14 12:20:07,386 INFO L231 Difference]: Finished difference. Result has 243 places, 223 transitions, 1931 flow [2024-06-14 12:20:07,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1931, PETRI_PLACES=243, PETRI_TRANSITIONS=223} [2024-06-14 12:20:07,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-14 12:20:07,387 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 223 transitions, 1931 flow [2024-06-14 12:20:07,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:07,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:07,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:07,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:20:07,387 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)] === [2024-06-14 12:20:07,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash 311402008, now seen corresponding path program 15 times [2024-06-14 12:20:07,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:07,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878172073] [2024-06-14 12:20:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:07,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:08,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:08,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878172073] [2024-06-14 12:20:08,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878172073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:08,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:08,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:08,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336716701] [2024-06-14 12:20:08,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:08,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:08,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:08,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:08,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 223 transitions, 1931 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:08,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:08,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:08,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:08,794 INFO L124 PetriNetUnfolderBase]: 477/924 cut-off events. [2024-06-14 12:20:08,794 INFO L125 PetriNetUnfolderBase]: For 50148/50148 co-relation queries the response was YES. [2024-06-14 12:20:08,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 924 events. 477/924 cut-off events. For 50148/50148 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5049 event pairs, 65 based on Foata normal form. 2/925 useless extension candidates. Maximal degree in co-relation 5186. Up to 743 conditions per place. [2024-06-14 12:20:08,804 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 175 selfloop transitions, 56 changer transitions 0/234 dead transitions. [2024-06-14 12:20:08,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 234 transitions, 2445 flow [2024-06-14 12:20:08,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:20:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:20:08,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:20:08,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:20:08,806 INFO L175 Difference]: Start difference. First operand has 243 places, 223 transitions, 1931 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:20:08,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 234 transitions, 2445 flow [2024-06-14 12:20:08,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 234 transitions, 2322 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:20:08,942 INFO L231 Difference]: Finished difference. Result has 247 places, 224 transitions, 1956 flow [2024-06-14 12:20:08,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1956, PETRI_PLACES=247, PETRI_TRANSITIONS=224} [2024-06-14 12:20:08,943 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-14 12:20:08,943 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 224 transitions, 1956 flow [2024-06-14 12:20:08,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:08,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:08,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:08,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:20:08,944 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)] === [2024-06-14 12:20:08,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:08,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1073463632, now seen corresponding path program 16 times [2024-06-14 12:20:08,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:08,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998576602] [2024-06-14 12:20:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:08,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:09,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:09,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998576602] [2024-06-14 12:20:09,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998576602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:09,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:09,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:09,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279967960] [2024-06-14 12:20:09,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:09,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:09,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:09,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:09,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:10,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:10,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 224 transitions, 1956 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:10,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:10,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:10,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:10,436 INFO L124 PetriNetUnfolderBase]: 481/930 cut-off events. [2024-06-14 12:20:10,436 INFO L125 PetriNetUnfolderBase]: For 51661/51661 co-relation queries the response was YES. [2024-06-14 12:20:10,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5357 conditions, 930 events. 481/930 cut-off events. For 51661/51661 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5115 event pairs, 64 based on Foata normal form. 2/931 useless extension candidates. Maximal degree in co-relation 5249. Up to 690 conditions per place. [2024-06-14 12:20:10,442 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 164 selfloop transitions, 69 changer transitions 0/236 dead transitions. [2024-06-14 12:20:10,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 236 transitions, 2478 flow [2024-06-14 12:20:10,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:20:10,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:20:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:20:10,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:20:10,443 INFO L175 Difference]: Start difference. First operand has 247 places, 224 transitions, 1956 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:20:10,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 236 transitions, 2478 flow [2024-06-14 12:20:10,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 236 transitions, 2329 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:10,584 INFO L231 Difference]: Finished difference. Result has 248 places, 225 transitions, 1983 flow [2024-06-14 12:20:10,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1983, PETRI_PLACES=248, PETRI_TRANSITIONS=225} [2024-06-14 12:20:10,585 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-14 12:20:10,585 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 225 transitions, 1983 flow [2024-06-14 12:20:10,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:10,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:10,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:10,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:20:10,586 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)] === [2024-06-14 12:20:10,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash 281075062, now seen corresponding path program 17 times [2024-06-14 12:20:10,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:10,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539520418] [2024-06-14 12:20:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:10,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:11,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:11,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539520418] [2024-06-14 12:20:11,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539520418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:11,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:11,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:11,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633819524] [2024-06-14 12:20:11,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:11,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:11,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:11,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:11,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 225 transitions, 1983 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:11,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:11,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:11,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:12,145 INFO L124 PetriNetUnfolderBase]: 488/943 cut-off events. [2024-06-14 12:20:12,145 INFO L125 PetriNetUnfolderBase]: For 53339/53339 co-relation queries the response was YES. [2024-06-14 12:20:12,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5470 conditions, 943 events. 488/943 cut-off events. For 53339/53339 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5214 event pairs, 65 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 5361. Up to 763 conditions per place. [2024-06-14 12:20:12,155 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 174 selfloop transitions, 61 changer transitions 0/238 dead transitions. [2024-06-14 12:20:12,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 238 transitions, 2530 flow [2024-06-14 12:20:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:20:12,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:20:12,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:20:12,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:20:12,156 INFO L175 Difference]: Start difference. First operand has 248 places, 225 transitions, 1983 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:20:12,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 238 transitions, 2530 flow [2024-06-14 12:20:12,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 238 transitions, 2362 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:20:12,322 INFO L231 Difference]: Finished difference. Result has 250 places, 228 transitions, 1998 flow [2024-06-14 12:20:12,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1998, PETRI_PLACES=250, PETRI_TRANSITIONS=228} [2024-06-14 12:20:12,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-14 12:20:12,322 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 228 transitions, 1998 flow [2024-06-14 12:20:12,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:12,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:12,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:12,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:20:12,323 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)] === [2024-06-14 12:20:12,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:12,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1043314316, now seen corresponding path program 18 times [2024-06-14 12:20:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:12,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373265835] [2024-06-14 12:20:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:12,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:13,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:13,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373265835] [2024-06-14 12:20:13,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373265835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:13,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:13,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84393479] [2024-06-14 12:20:13,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:13,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:13,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:13,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:13,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:13,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:13,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 228 transitions, 1998 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:13,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:13,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:13,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:13,677 INFO L124 PetriNetUnfolderBase]: 492/951 cut-off events. [2024-06-14 12:20:13,677 INFO L125 PetriNetUnfolderBase]: For 54871/54871 co-relation queries the response was YES. [2024-06-14 12:20:13,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5503 conditions, 951 events. 492/951 cut-off events. For 54871/54871 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5252 event pairs, 65 based on Foata normal form. 2/952 useless extension candidates. Maximal degree in co-relation 5393. Up to 771 conditions per place. [2024-06-14 12:20:13,687 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 174 selfloop transitions, 62 changer transitions 0/239 dead transitions. [2024-06-14 12:20:13,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 239 transitions, 2528 flow [2024-06-14 12:20:13,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:20:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:20:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:20:13,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 12:20:13,689 INFO L175 Difference]: Start difference. First operand has 250 places, 228 transitions, 1998 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:20:13,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 239 transitions, 2528 flow [2024-06-14 12:20:13,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 239 transitions, 2380 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:13,833 INFO L231 Difference]: Finished difference. Result has 253 places, 229 transitions, 2016 flow [2024-06-14 12:20:13,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2016, PETRI_PLACES=253, PETRI_TRANSITIONS=229} [2024-06-14 12:20:13,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-14 12:20:13,834 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 229 transitions, 2016 flow [2024-06-14 12:20:13,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:13,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:13,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:13,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:20:13,834 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)] === [2024-06-14 12:20:13,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:13,834 INFO L85 PathProgramCache]: Analyzing trace with hash -140546958, now seen corresponding path program 19 times [2024-06-14 12:20:13,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:13,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479446295] [2024-06-14 12:20:13,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:13,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:14,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:14,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479446295] [2024-06-14 12:20:14,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479446295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:14,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:14,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:14,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224698902] [2024-06-14 12:20:14,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:14,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:14,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:14,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:14,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:14,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:14,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 229 transitions, 2016 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:14,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:14,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:14,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:15,229 INFO L124 PetriNetUnfolderBase]: 496/957 cut-off events. [2024-06-14 12:20:15,229 INFO L125 PetriNetUnfolderBase]: For 56358/56358 co-relation queries the response was YES. [2024-06-14 12:20:15,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5563 conditions, 957 events. 496/957 cut-off events. For 56358/56358 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5288 event pairs, 67 based on Foata normal form. 2/958 useless extension candidates. Maximal degree in co-relation 5452. Up to 779 conditions per place. [2024-06-14 12:20:15,235 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 167 selfloop transitions, 70 changer transitions 0/240 dead transitions. [2024-06-14 12:20:15,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 240 transitions, 2550 flow [2024-06-14 12:20:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:20:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:20:15,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:20:15,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 12:20:15,236 INFO L175 Difference]: Start difference. First operand has 253 places, 229 transitions, 2016 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:20:15,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 240 transitions, 2550 flow [2024-06-14 12:20:15,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 240 transitions, 2377 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 12:20:15,372 INFO L231 Difference]: Finished difference. Result has 255 places, 230 transitions, 2027 flow [2024-06-14 12:20:15,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2027, PETRI_PLACES=255, PETRI_TRANSITIONS=230} [2024-06-14 12:20:15,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 12:20:15,373 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 230 transitions, 2027 flow [2024-06-14 12:20:15,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:15,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:15,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:15,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:20:15,374 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)] === [2024-06-14 12:20:15,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:15,374 INFO L85 PathProgramCache]: Analyzing trace with hash 274641322, now seen corresponding path program 20 times [2024-06-14 12:20:15,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:15,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600803026] [2024-06-14 12:20:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:15,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:16,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:16,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600803026] [2024-06-14 12:20:16,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600803026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:16,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:16,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:16,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911212778] [2024-06-14 12:20:16,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:16,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:16,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:16,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:16,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:16,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:16,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 230 transitions, 2027 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:16,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:16,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:16,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:16,830 INFO L124 PetriNetUnfolderBase]: 493/956 cut-off events. [2024-06-14 12:20:16,830 INFO L125 PetriNetUnfolderBase]: For 51383/51383 co-relation queries the response was YES. [2024-06-14 12:20:16,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5339 conditions, 956 events. 493/956 cut-off events. For 51383/51383 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5323 event pairs, 65 based on Foata normal form. 2/957 useless extension candidates. Maximal degree in co-relation 5227. Up to 707 conditions per place. [2024-06-14 12:20:16,840 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 158 selfloop transitions, 80 changer transitions 0/241 dead transitions. [2024-06-14 12:20:16,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 241 transitions, 2527 flow [2024-06-14 12:20:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:20:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:20:16,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:20:16,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:20:16,841 INFO L175 Difference]: Start difference. First operand has 255 places, 230 transitions, 2027 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:20:16,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 241 transitions, 2527 flow [2024-06-14 12:20:16,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 241 transitions, 2315 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-14 12:20:17,000 INFO L231 Difference]: Finished difference. Result has 255 places, 230 transitions, 1979 flow [2024-06-14 12:20:17,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1979, PETRI_PLACES=255, PETRI_TRANSITIONS=230} [2024-06-14 12:20:17,001 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 12:20:17,001 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 230 transitions, 1979 flow [2024-06-14 12:20:17,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:17,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:17,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:17,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:20:17,001 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)] === [2024-06-14 12:20:17,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:17,001 INFO L85 PathProgramCache]: Analyzing trace with hash 138919062, now seen corresponding path program 7 times [2024-06-14 12:20:17,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:17,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265705014] [2024-06-14 12:20:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:17,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:18,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:18,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265705014] [2024-06-14 12:20:18,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265705014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:18,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:18,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:18,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494443027] [2024-06-14 12:20:18,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:18,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:18,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:18,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:18,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:18,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:18,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 230 transitions, 1979 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:18,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:18,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:18,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:18,668 INFO L124 PetriNetUnfolderBase]: 499/962 cut-off events. [2024-06-14 12:20:18,668 INFO L125 PetriNetUnfolderBase]: For 49095/49095 co-relation queries the response was YES. [2024-06-14 12:20:18,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5358 conditions, 962 events. 499/962 cut-off events. For 49095/49095 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5321 event pairs, 66 based on Foata normal form. 1/962 useless extension candidates. Maximal degree in co-relation 5245. Up to 724 conditions per place. [2024-06-14 12:20:18,675 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 73 changer transitions 0/244 dead transitions. [2024-06-14 12:20:18,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 244 transitions, 2561 flow [2024-06-14 12:20:18,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:20:18,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:20:18,677 INFO L175 Difference]: Start difference. First operand has 255 places, 230 transitions, 1979 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:20:18,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 244 transitions, 2561 flow [2024-06-14 12:20:18,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 244 transitions, 2367 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:18,832 INFO L231 Difference]: Finished difference. Result has 257 places, 234 transitions, 2018 flow [2024-06-14 12:20:18,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2018, PETRI_PLACES=257, PETRI_TRANSITIONS=234} [2024-06-14 12:20:18,832 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-14 12:20:18,833 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 234 transitions, 2018 flow [2024-06-14 12:20:18,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:18,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:18,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:18,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:20:18,833 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)] === [2024-06-14 12:20:18,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:18,834 INFO L85 PathProgramCache]: Analyzing trace with hash 311408952, now seen corresponding path program 8 times [2024-06-14 12:20:18,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:18,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974155498] [2024-06-14 12:20:18,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:18,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:20,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:20,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974155498] [2024-06-14 12:20:20,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974155498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:20,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:20,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:20,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908039790] [2024-06-14 12:20:20,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:20,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:20,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:20,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:20,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:20,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:20,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 234 transitions, 2018 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:20,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:20,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:20,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:20,669 INFO L124 PetriNetUnfolderBase]: 508/985 cut-off events. [2024-06-14 12:20:20,669 INFO L125 PetriNetUnfolderBase]: For 50724/50724 co-relation queries the response was YES. [2024-06-14 12:20:20,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5455 conditions, 985 events. 508/985 cut-off events. For 50724/50724 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5544 event pairs, 66 based on Foata normal form. 1/985 useless extension candidates. Maximal degree in co-relation 5341. Up to 737 conditions per place. [2024-06-14 12:20:20,674 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 175 selfloop transitions, 72 changer transitions 0/250 dead transitions. [2024-06-14 12:20:20,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 250 transitions, 2636 flow [2024-06-14 12:20:20,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:20:20,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 12:20:20,675 INFO L175 Difference]: Start difference. First operand has 257 places, 234 transitions, 2018 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:20:20,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 250 transitions, 2636 flow [2024-06-14 12:20:20,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 250 transitions, 2425 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:20,825 INFO L231 Difference]: Finished difference. Result has 259 places, 240 transitions, 2062 flow [2024-06-14 12:20:20,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2062, PETRI_PLACES=259, PETRI_TRANSITIONS=240} [2024-06-14 12:20:20,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-14 12:20:20,825 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 240 transitions, 2062 flow [2024-06-14 12:20:20,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:20,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:20,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:20,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:20:20,826 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)] === [2024-06-14 12:20:20,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:20,826 INFO L85 PathProgramCache]: Analyzing trace with hash 311647962, now seen corresponding path program 9 times [2024-06-14 12:20:20,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:20,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146091697] [2024-06-14 12:20:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:20,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:21,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:21,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146091697] [2024-06-14 12:20:21,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146091697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:21,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:21,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:21,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139112406] [2024-06-14 12:20:21,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:21,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:21,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:21,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:21,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:21,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:21,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 240 transitions, 2062 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:21,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:21,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:21,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:22,285 INFO L124 PetriNetUnfolderBase]: 516/996 cut-off events. [2024-06-14 12:20:22,285 INFO L125 PetriNetUnfolderBase]: For 55891/55891 co-relation queries the response was YES. [2024-06-14 12:20:22,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5681 conditions, 996 events. 516/996 cut-off events. For 55891/55891 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5590 event pairs, 67 based on Foata normal form. 1/996 useless extension candidates. Maximal degree in co-relation 5568. Up to 691 conditions per place. [2024-06-14 12:20:22,292 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 94 changer transitions 0/255 dead transitions. [2024-06-14 12:20:22,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 255 transitions, 2896 flow [2024-06-14 12:20:22,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:22,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:22,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:20:22,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 12:20:22,293 INFO L175 Difference]: Start difference. First operand has 259 places, 240 transitions, 2062 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:20:22,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 255 transitions, 2896 flow [2024-06-14 12:20:22,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 255 transitions, 2710 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-14 12:20:22,460 INFO L231 Difference]: Finished difference. Result has 264 places, 244 transitions, 2221 flow [2024-06-14 12:20:22,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2221, PETRI_PLACES=264, PETRI_TRANSITIONS=244} [2024-06-14 12:20:22,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-14 12:20:22,461 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 244 transitions, 2221 flow [2024-06-14 12:20:22,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:22,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:22,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:22,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:20:22,461 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)] === [2024-06-14 12:20:22,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:22,462 INFO L85 PathProgramCache]: Analyzing trace with hash 311639592, now seen corresponding path program 10 times [2024-06-14 12:20:22,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:22,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880044150] [2024-06-14 12:20:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:22,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:23,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:23,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880044150] [2024-06-14 12:20:23,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880044150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:23,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:23,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:23,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707667796] [2024-06-14 12:20:23,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:23,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:23,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:23,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:23,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:23,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:23,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 244 transitions, 2221 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:23,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:23,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:23,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:24,105 INFO L124 PetriNetUnfolderBase]: 519/1003 cut-off events. [2024-06-14 12:20:24,105 INFO L125 PetriNetUnfolderBase]: For 57698/57698 co-relation queries the response was YES. [2024-06-14 12:20:24,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5801 conditions, 1003 events. 519/1003 cut-off events. For 57698/57698 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5654 event pairs, 66 based on Foata normal form. 1/1003 useless extension candidates. Maximal degree in co-relation 5687. Up to 755 conditions per place. [2024-06-14 12:20:24,111 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 74 changer transitions 0/256 dead transitions. [2024-06-14 12:20:24,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 256 transitions, 2827 flow [2024-06-14 12:20:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:20:24,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:20:24,112 INFO L175 Difference]: Start difference. First operand has 264 places, 244 transitions, 2221 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:20:24,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 256 transitions, 2827 flow [2024-06-14 12:20:24,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 256 transitions, 2637 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:24,272 INFO L231 Difference]: Finished difference. Result has 268 places, 246 transitions, 2266 flow [2024-06-14 12:20:24,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2266, PETRI_PLACES=268, PETRI_TRANSITIONS=246} [2024-06-14 12:20:24,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-14 12:20:24,273 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 246 transitions, 2266 flow [2024-06-14 12:20:24,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:24,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:24,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:24,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:20:24,273 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)] === [2024-06-14 12:20:24,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash 305152842, now seen corresponding path program 11 times [2024-06-14 12:20:24,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:24,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912140485] [2024-06-14 12:20:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:24,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:25,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:25,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912140485] [2024-06-14 12:20:25,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912140485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:25,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:25,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:25,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142308286] [2024-06-14 12:20:25,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:25,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:25,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:25,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:25,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:25,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:25,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 246 transitions, 2266 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:25,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:25,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:25,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:25,969 INFO L124 PetriNetUnfolderBase]: 517/1000 cut-off events. [2024-06-14 12:20:25,969 INFO L125 PetriNetUnfolderBase]: For 54884/54884 co-relation queries the response was YES. [2024-06-14 12:20:25,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5725 conditions, 1000 events. 517/1000 cut-off events. For 54884/54884 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5617 event pairs, 66 based on Foata normal form. 1/1000 useless extension candidates. Maximal degree in co-relation 5609. Up to 752 conditions per place. [2024-06-14 12:20:25,977 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 71 changer transitions 0/256 dead transitions. [2024-06-14 12:20:25,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 256 transitions, 2794 flow [2024-06-14 12:20:25,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:25,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:20:25,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:20:25,978 INFO L175 Difference]: Start difference. First operand has 268 places, 246 transitions, 2266 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:20:25,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 256 transitions, 2794 flow [2024-06-14 12:20:26,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 256 transitions, 2531 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:26,147 INFO L231 Difference]: Finished difference. Result has 270 places, 246 transitions, 2150 flow [2024-06-14 12:20:26,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2150, PETRI_PLACES=270, PETRI_TRANSITIONS=246} [2024-06-14 12:20:26,147 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-14 12:20:26,147 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 246 transitions, 2150 flow [2024-06-14 12:20:26,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:26,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:26,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:26,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:20:26,148 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)] === [2024-06-14 12:20:26,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:26,148 INFO L85 PathProgramCache]: Analyzing trace with hash 311648272, now seen corresponding path program 2 times [2024-06-14 12:20:26,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:26,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91856363] [2024-06-14 12:20:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:26,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:27,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91856363] [2024-06-14 12:20:27,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91856363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:27,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:27,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:27,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566886322] [2024-06-14 12:20:27,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:27,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:27,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:27,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:27,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:27,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:27,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 246 transitions, 2150 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:27,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:27,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:27,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:27,572 INFO L124 PetriNetUnfolderBase]: 521/1008 cut-off events. [2024-06-14 12:20:27,572 INFO L125 PetriNetUnfolderBase]: For 58657/58657 co-relation queries the response was YES. [2024-06-14 12:20:27,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5673 conditions, 1008 events. 521/1008 cut-off events. For 58657/58657 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5690 event pairs, 66 based on Foata normal form. 2/1009 useless extension candidates. Maximal degree in co-relation 5556. Up to 865 conditions per place. [2024-06-14 12:20:27,580 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 41 changer transitions 0/258 dead transitions. [2024-06-14 12:20:27,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 258 transitions, 2702 flow [2024-06-14 12:20:27,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:27,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:27,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:20:27,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:20:27,581 INFO L175 Difference]: Start difference. First operand has 270 places, 246 transitions, 2150 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:20:27,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 258 transitions, 2702 flow [2024-06-14 12:20:27,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 258 transitions, 2513 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-14 12:20:27,785 INFO L231 Difference]: Finished difference. Result has 270 places, 247 transitions, 2067 flow [2024-06-14 12:20:27,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2067, PETRI_PLACES=270, PETRI_TRANSITIONS=247} [2024-06-14 12:20:27,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-14 12:20:27,785 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 247 transitions, 2067 flow [2024-06-14 12:20:27,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:27,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:27,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:27,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:20:27,786 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)] === [2024-06-14 12:20:27,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:27,786 INFO L85 PathProgramCache]: Analyzing trace with hash -61878256, now seen corresponding path program 3 times [2024-06-14 12:20:27,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:27,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712187878] [2024-06-14 12:20:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:27,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:28,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712187878] [2024-06-14 12:20:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712187878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:28,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:28,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:28,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326550437] [2024-06-14 12:20:28,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:28,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:28,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:28,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:28,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:28,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:28,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 247 transitions, 2067 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:28,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:28,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:28,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:29,233 INFO L124 PetriNetUnfolderBase]: 525/1014 cut-off events. [2024-06-14 12:20:29,233 INFO L125 PetriNetUnfolderBase]: For 59845/59845 co-relation queries the response was YES. [2024-06-14 12:20:29,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5657 conditions, 1014 events. 525/1014 cut-off events. For 59845/59845 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5740 event pairs, 98 based on Foata normal form. 2/1015 useless extension candidates. Maximal degree in co-relation 5539. Up to 928 conditions per place. [2024-06-14 12:20:29,241 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 235 selfloop transitions, 22 changer transitions 0/260 dead transitions. [2024-06-14 12:20:29,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 260 transitions, 2627 flow [2024-06-14 12:20:29,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:29,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 12:20:29,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:20:29,243 INFO L175 Difference]: Start difference. First operand has 270 places, 247 transitions, 2067 flow. Second operand 12 states and 136 transitions. [2024-06-14 12:20:29,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 260 transitions, 2627 flow [2024-06-14 12:20:29,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 260 transitions, 2531 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:29,418 INFO L231 Difference]: Finished difference. Result has 273 places, 248 transitions, 2041 flow [2024-06-14 12:20:29,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2041, PETRI_PLACES=273, PETRI_TRANSITIONS=248} [2024-06-14 12:20:29,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-14 12:20:29,419 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 248 transitions, 2041 flow [2024-06-14 12:20:29,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:29,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:29,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:29,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:20:29,420 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)] === [2024-06-14 12:20:29,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:29,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2028794006, now seen corresponding path program 12 times [2024-06-14 12:20:29,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:29,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775153089] [2024-06-14 12:20:29,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:29,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:30,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:30,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775153089] [2024-06-14 12:20:30,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775153089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:30,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:30,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:30,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710146069] [2024-06-14 12:20:30,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:30,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:30,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:30,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:30,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:30,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 248 transitions, 2041 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:30,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:30,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:30,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:31,188 INFO L124 PetriNetUnfolderBase]: 531/1025 cut-off events. [2024-06-14 12:20:31,189 INFO L125 PetriNetUnfolderBase]: For 58255/58255 co-relation queries the response was YES. [2024-06-14 12:20:31,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5721 conditions, 1025 events. 531/1025 cut-off events. For 58255/58255 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5825 event pairs, 66 based on Foata normal form. 1/1025 useless extension candidates. Maximal degree in co-relation 5602. Up to 777 conditions per place. [2024-06-14 12:20:31,199 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 181 selfloop transitions, 78 changer transitions 0/262 dead transitions. [2024-06-14 12:20:31,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 262 transitions, 2673 flow [2024-06-14 12:20:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:31,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:20:31,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:20:31,201 INFO L175 Difference]: Start difference. First operand has 273 places, 248 transitions, 2041 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:20:31,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 262 transitions, 2673 flow [2024-06-14 12:20:31,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 262 transitions, 2613 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-14 12:20:31,388 INFO L231 Difference]: Finished difference. Result has 274 places, 252 transitions, 2238 flow [2024-06-14 12:20:31,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2238, PETRI_PLACES=274, PETRI_TRANSITIONS=252} [2024-06-14 12:20:31,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-14 12:20:31,389 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 252 transitions, 2238 flow [2024-06-14 12:20:31,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:31,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:31,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:31,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:20:31,390 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)] === [2024-06-14 12:20:31,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:31,390 INFO L85 PathProgramCache]: Analyzing trace with hash 281321326, now seen corresponding path program 4 times [2024-06-14 12:20:31,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:31,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252313872] [2024-06-14 12:20:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:31,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:32,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:32,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252313872] [2024-06-14 12:20:32,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252313872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:32,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:32,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:32,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261682261] [2024-06-14 12:20:32,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:32,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:32,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:32,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:32,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:32,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:32,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 252 transitions, 2238 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:32,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:32,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:32,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:32,838 INFO L124 PetriNetUnfolderBase]: 535/1034 cut-off events. [2024-06-14 12:20:32,839 INFO L125 PetriNetUnfolderBase]: For 63617/63617 co-relation queries the response was YES. [2024-06-14 12:20:32,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5893 conditions, 1034 events. 535/1034 cut-off events. For 63617/63617 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5883 event pairs, 66 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 5773. Up to 891 conditions per place. [2024-06-14 12:20:32,849 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 43 changer transitions 0/264 dead transitions. [2024-06-14 12:20:32,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 264 transitions, 2806 flow [2024-06-14 12:20:32,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:20:32,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:20:32,851 INFO L175 Difference]: Start difference. First operand has 274 places, 252 transitions, 2238 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:20:32,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 264 transitions, 2806 flow [2024-06-14 12:20:33,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 264 transitions, 2581 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-14 12:20:33,051 INFO L231 Difference]: Finished difference. Result has 277 places, 253 transitions, 2127 flow [2024-06-14 12:20:33,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2127, PETRI_PLACES=277, PETRI_TRANSITIONS=253} [2024-06-14 12:20:33,051 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-14 12:20:33,051 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 253 transitions, 2127 flow [2024-06-14 12:20:33,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:33,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:33,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:33,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:20:33,052 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)] === [2024-06-14 12:20:33,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:33,052 INFO L85 PathProgramCache]: Analyzing trace with hash -71997896, now seen corresponding path program 13 times [2024-06-14 12:20:33,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:33,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646878438] [2024-06-14 12:20:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:33,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:34,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:34,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646878438] [2024-06-14 12:20:34,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646878438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:34,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:34,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:34,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688198442] [2024-06-14 12:20:34,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:34,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:34,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:34,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:34,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:34,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:34,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 253 transitions, 2127 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:34,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:34,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:34,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:34,580 INFO L124 PetriNetUnfolderBase]: 538/1039 cut-off events. [2024-06-14 12:20:34,580 INFO L125 PetriNetUnfolderBase]: For 61294/61294 co-relation queries the response was YES. [2024-06-14 12:20:34,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5869 conditions, 1039 events. 538/1039 cut-off events. For 61294/61294 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5914 event pairs, 98 based on Foata normal form. 1/1039 useless extension candidates. Maximal degree in co-relation 5748. Up to 954 conditions per place. [2024-06-14 12:20:34,588 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 22 changer transitions 0/265 dead transitions. [2024-06-14 12:20:34,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 265 transitions, 2755 flow [2024-06-14 12:20:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:20:34,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:20:34,590 INFO L175 Difference]: Start difference. First operand has 277 places, 253 transitions, 2127 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:20:34,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 265 transitions, 2755 flow [2024-06-14 12:20:34,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 265 transitions, 2651 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:34,791 INFO L231 Difference]: Finished difference. Result has 279 places, 255 transitions, 2158 flow [2024-06-14 12:20:34,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2023, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2158, PETRI_PLACES=279, PETRI_TRANSITIONS=255} [2024-06-14 12:20:34,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-14 12:20:34,792 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 255 transitions, 2158 flow [2024-06-14 12:20:34,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:34,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:34,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:34,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:20:34,793 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)] === [2024-06-14 12:20:34,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:34,794 INFO L85 PathProgramCache]: Analyzing trace with hash -132257124, now seen corresponding path program 5 times [2024-06-14 12:20:34,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:34,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560741080] [2024-06-14 12:20:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:34,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:35,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:35,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560741080] [2024-06-14 12:20:35,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560741080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:35,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:35,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:35,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134673345] [2024-06-14 12:20:35,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:35,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:35,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:35,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:35,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:35,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 255 transitions, 2158 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:35,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:35,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:35,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:36,345 INFO L124 PetriNetUnfolderBase]: 542/1047 cut-off events. [2024-06-14 12:20:36,346 INFO L125 PetriNetUnfolderBase]: For 66495/66495 co-relation queries the response was YES. [2024-06-14 12:20:36,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5884 conditions, 1047 events. 542/1047 cut-off events. For 66495/66495 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5957 event pairs, 100 based on Foata normal form. 2/1048 useless extension candidates. Maximal degree in co-relation 5762. Up to 965 conditions per place. [2024-06-14 12:20:36,352 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 246 selfloop transitions, 18 changer transitions 0/267 dead transitions. [2024-06-14 12:20:36,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 267 transitions, 2734 flow [2024-06-14 12:20:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 12:20:36,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 12:20:36,353 INFO L175 Difference]: Start difference. First operand has 279 places, 255 transitions, 2158 flow. Second operand 11 states and 125 transitions. [2024-06-14 12:20:36,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 267 transitions, 2734 flow [2024-06-14 12:20:36,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 267 transitions, 2615 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:36,547 INFO L231 Difference]: Finished difference. Result has 281 places, 256 transitions, 2105 flow [2024-06-14 12:20:36,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2105, PETRI_PLACES=281, PETRI_TRANSITIONS=256} [2024-06-14 12:20:36,548 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-14 12:20:36,548 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 256 transitions, 2105 flow [2024-06-14 12:20:36,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:36,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:36,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:36,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:20:36,548 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)] === [2024-06-14 12:20:36,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:36,549 INFO L85 PathProgramCache]: Analyzing trace with hash -61522066, now seen corresponding path program 6 times [2024-06-14 12:20:36,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:36,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341992913] [2024-06-14 12:20:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:36,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:37,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:37,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:37,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341992913] [2024-06-14 12:20:37,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341992913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:37,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:37,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:37,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119127822] [2024-06-14 12:20:37,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:37,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:37,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:37,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:37,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:37,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:37,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 256 transitions, 2105 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:37,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:37,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:37,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:38,084 INFO L124 PetriNetUnfolderBase]: 546/1055 cut-off events. [2024-06-14 12:20:38,084 INFO L125 PetriNetUnfolderBase]: For 67452/67452 co-relation queries the response was YES. [2024-06-14 12:20:38,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5892 conditions, 1055 events. 546/1055 cut-off events. For 67452/67452 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6028 event pairs, 98 based on Foata normal form. 2/1056 useless extension candidates. Maximal degree in co-relation 5769. Up to 947 conditions per place. [2024-06-14 12:20:38,092 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 243 selfloop transitions, 24 changer transitions 0/270 dead transitions. [2024-06-14 12:20:38,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 270 transitions, 2693 flow [2024-06-14 12:20:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:20:38,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:20:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 12:20:38,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:20:38,093 INFO L175 Difference]: Start difference. First operand has 281 places, 256 transitions, 2105 flow. Second operand 12 states and 136 transitions. [2024-06-14 12:20:38,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 270 transitions, 2693 flow [2024-06-14 12:20:38,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 270 transitions, 2634 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:38,296 INFO L231 Difference]: Finished difference. Result has 284 places, 257 transitions, 2126 flow [2024-06-14 12:20:38,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2126, PETRI_PLACES=284, PETRI_TRANSITIONS=257} [2024-06-14 12:20:38,297 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-14 12:20:38,297 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 257 transitions, 2126 flow [2024-06-14 12:20:38,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:38,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:38,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:38,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:20:38,298 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)] === [2024-06-14 12:20:38,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:38,299 INFO L85 PathProgramCache]: Analyzing trace with hash -61878566, now seen corresponding path program 14 times [2024-06-14 12:20:38,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:38,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919310978] [2024-06-14 12:20:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:38,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:39,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:39,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919310978] [2024-06-14 12:20:39,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919310978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:39,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:39,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:39,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115828820] [2024-06-14 12:20:39,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:39,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:39,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:39,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:39,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:39,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:39,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 257 transitions, 2126 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:39,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:39,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:39,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:40,097 INFO L124 PetriNetUnfolderBase]: 549/1060 cut-off events. [2024-06-14 12:20:40,097 INFO L125 PetriNetUnfolderBase]: For 65610/65610 co-relation queries the response was YES. [2024-06-14 12:20:40,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5984 conditions, 1060 events. 549/1060 cut-off events. For 65610/65610 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6066 event pairs, 100 based on Foata normal form. 1/1060 useless extension candidates. Maximal degree in co-relation 5860. Up to 966 conditions per place. [2024-06-14 12:20:40,105 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 29 changer transitions 0/271 dead transitions. [2024-06-14 12:20:40,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 271 transitions, 2774 flow [2024-06-14 12:20:40,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:20:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:20:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-14 12:20:40,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-14 12:20:40,106 INFO L175 Difference]: Start difference. First operand has 284 places, 257 transitions, 2126 flow. Second operand 13 states and 146 transitions. [2024-06-14 12:20:40,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 271 transitions, 2774 flow [2024-06-14 12:20:40,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 271 transitions, 2704 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-14 12:20:40,304 INFO L231 Difference]: Finished difference. Result has 287 places, 259 transitions, 2212 flow [2024-06-14 12:20:40,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2212, PETRI_PLACES=287, PETRI_TRANSITIONS=259} [2024-06-14 12:20:40,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-14 12:20:40,305 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 259 transitions, 2212 flow [2024-06-14 12:20:40,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:40,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:40,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:40,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:20:40,306 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)] === [2024-06-14 12:20:40,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:40,306 INFO L85 PathProgramCache]: Analyzing trace with hash -357336776, now seen corresponding path program 15 times [2024-06-14 12:20:40,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:40,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786977670] [2024-06-14 12:20:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:40,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786977670] [2024-06-14 12:20:41,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786977670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:41,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:41,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:41,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858486786] [2024-06-14 12:20:41,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:41,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:41,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:41,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:41,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:41,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:41,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 259 transitions, 2212 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:41,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:41,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:41,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:42,122 INFO L124 PetriNetUnfolderBase]: 555/1074 cut-off events. [2024-06-14 12:20:42,122 INFO L125 PetriNetUnfolderBase]: For 67696/67696 co-relation queries the response was YES. [2024-06-14 12:20:42,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6106 conditions, 1074 events. 555/1074 cut-off events. For 67696/67696 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6191 event pairs, 68 based on Foata normal form. 1/1074 useless extension candidates. Maximal degree in co-relation 5981. Up to 820 conditions per place. [2024-06-14 12:20:42,128 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 181 selfloop transitions, 89 changer transitions 0/273 dead transitions. [2024-06-14 12:20:42,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 273 transitions, 2878 flow [2024-06-14 12:20:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:20:42,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:20:42,129 INFO L175 Difference]: Start difference. First operand has 287 places, 259 transitions, 2212 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:20:42,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 273 transitions, 2878 flow [2024-06-14 12:20:42,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 273 transitions, 2737 flow, removed 44 selfloop flow, removed 11 redundant places. [2024-06-14 12:20:42,332 INFO L231 Difference]: Finished difference. Result has 287 places, 263 transitions, 2362 flow [2024-06-14 12:20:42,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2362, PETRI_PLACES=287, PETRI_TRANSITIONS=263} [2024-06-14 12:20:42,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-14 12:20:42,333 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 263 transitions, 2362 flow [2024-06-14 12:20:42,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:42,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:42,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:42,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:20:42,333 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)] === [2024-06-14 12:20:42,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:42,333 INFO L85 PathProgramCache]: Analyzing trace with hash 281082006, now seen corresponding path program 16 times [2024-06-14 12:20:42,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:42,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988704572] [2024-06-14 12:20:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:42,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:43,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:43,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988704572] [2024-06-14 12:20:43,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988704572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:43,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:43,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750927561] [2024-06-14 12:20:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:43,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:43,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:43,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:43,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:43,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:43,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 263 transitions, 2362 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:43,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:43,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:43,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:44,179 INFO L124 PetriNetUnfolderBase]: 561/1086 cut-off events. [2024-06-14 12:20:44,179 INFO L125 PetriNetUnfolderBase]: For 67896/67896 co-relation queries the response was YES. [2024-06-14 12:20:44,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6278 conditions, 1086 events. 561/1086 cut-off events. For 67896/67896 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6270 event pairs, 68 based on Foata normal form. 1/1086 useless extension candidates. Maximal degree in co-relation 6152. Up to 829 conditions per place. [2024-06-14 12:20:44,187 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 81 changer transitions 0/277 dead transitions. [2024-06-14 12:20:44,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 277 transitions, 3040 flow [2024-06-14 12:20:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:44,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:44,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:20:44,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:20:44,188 INFO L175 Difference]: Start difference. First operand has 287 places, 263 transitions, 2362 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:20:44,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 277 transitions, 3040 flow [2024-06-14 12:20:44,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 277 transitions, 2791 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:44,402 INFO L231 Difference]: Finished difference. Result has 291 places, 267 transitions, 2392 flow [2024-06-14 12:20:44,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2392, PETRI_PLACES=291, PETRI_TRANSITIONS=267} [2024-06-14 12:20:44,402 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-14 12:20:44,402 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 267 transitions, 2392 flow [2024-06-14 12:20:44,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:44,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:44,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:44,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:20:44,403 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)] === [2024-06-14 12:20:44,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:44,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2028802376, now seen corresponding path program 17 times [2024-06-14 12:20:44,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:44,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311989053] [2024-06-14 12:20:44,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:44,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:45,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:45,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:45,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311989053] [2024-06-14 12:20:45,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311989053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:45,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:45,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:45,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977437775] [2024-06-14 12:20:45,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:45,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:45,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:45,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:45,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:45,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:45,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 267 transitions, 2392 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:45,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:45,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:45,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:45,929 INFO L124 PetriNetUnfolderBase]: 569/1101 cut-off events. [2024-06-14 12:20:45,929 INFO L125 PetriNetUnfolderBase]: For 74795/74795 co-relation queries the response was YES. [2024-06-14 12:20:45,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 1101 events. 569/1101 cut-off events. For 74795/74795 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6372 event pairs, 69 based on Foata normal form. 1/1101 useless extension candidates. Maximal degree in co-relation 6441. Up to 785 conditions per place. [2024-06-14 12:20:45,938 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 105 changer transitions 0/282 dead transitions. [2024-06-14 12:20:45,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 282 transitions, 3344 flow [2024-06-14 12:20:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:20:45,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:20:45,939 INFO L175 Difference]: Start difference. First operand has 291 places, 267 transitions, 2392 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:20:45,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 282 transitions, 3344 flow [2024-06-14 12:20:46,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 282 transitions, 3110 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:46,165 INFO L231 Difference]: Finished difference. Result has 295 places, 271 transitions, 2565 flow [2024-06-14 12:20:46,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2565, PETRI_PLACES=295, PETRI_TRANSITIONS=271} [2024-06-14 12:20:46,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-14 12:20:46,166 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 271 transitions, 2565 flow [2024-06-14 12:20:46,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:46,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:46,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:46,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:20:46,167 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)] === [2024-06-14 12:20:46,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:46,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2022307256, now seen corresponding path program 18 times [2024-06-14 12:20:46,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:46,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923963401] [2024-06-14 12:20:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:46,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:47,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:47,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923963401] [2024-06-14 12:20:47,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923963401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:47,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:47,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:47,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218102648] [2024-06-14 12:20:47,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:47,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:47,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:47,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:47,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:47,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:47,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 271 transitions, 2565 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:47,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:47,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:47,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:47,918 INFO L124 PetriNetUnfolderBase]: 567/1096 cut-off events. [2024-06-14 12:20:47,918 INFO L125 PetriNetUnfolderBase]: For 71479/71479 co-relation queries the response was YES. [2024-06-14 12:20:47,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6433 conditions, 1096 events. 567/1096 cut-off events. For 71479/71479 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6337 event pairs, 68 based on Foata normal form. 1/1096 useless extension candidates. Maximal degree in co-relation 6305. Up to 839 conditions per place. [2024-06-14 12:20:47,927 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 194 selfloop transitions, 84 changer transitions 0/281 dead transitions. [2024-06-14 12:20:47,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 281 transitions, 3143 flow [2024-06-14 12:20:47,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:47,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:20:47,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:20:47,928 INFO L175 Difference]: Start difference. First operand has 295 places, 271 transitions, 2565 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:20:47,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 281 transitions, 3143 flow [2024-06-14 12:20:48,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 281 transitions, 2853 flow, removed 85 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:48,167 INFO L231 Difference]: Finished difference. Result has 299 places, 271 transitions, 2448 flow [2024-06-14 12:20:48,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2448, PETRI_PLACES=299, PETRI_TRANSITIONS=271} [2024-06-14 12:20:48,167 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-14 12:20:48,167 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 271 transitions, 2448 flow [2024-06-14 12:20:48,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:48,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:48,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:48,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:20:48,168 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)] === [2024-06-14 12:20:48,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:48,169 INFO L85 PathProgramCache]: Analyzing trace with hash -357106136, now seen corresponding path program 19 times [2024-06-14 12:20:48,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:48,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439421567] [2024-06-14 12:20:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:48,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:49,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:49,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439421567] [2024-06-14 12:20:49,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439421567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:49,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:49,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:49,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76626037] [2024-06-14 12:20:49,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:49,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:49,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:49,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:49,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:49,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:49,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 271 transitions, 2448 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:49,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:49,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:49,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:49,779 INFO L124 PetriNetUnfolderBase]: 570/1103 cut-off events. [2024-06-14 12:20:49,779 INFO L125 PetriNetUnfolderBase]: For 72014/72014 co-relation queries the response was YES. [2024-06-14 12:20:49,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6508 conditions, 1103 events. 570/1103 cut-off events. For 72014/72014 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6385 event pairs, 68 based on Foata normal form. 1/1103 useless extension candidates. Maximal degree in co-relation 6378. Up to 844 conditions per place. [2024-06-14 12:20:49,791 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 190 selfloop transitions, 90 changer transitions 0/283 dead transitions. [2024-06-14 12:20:49,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 283 transitions, 3128 flow [2024-06-14 12:20:49,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:20:49,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:20:49,793 INFO L175 Difference]: Start difference. First operand has 299 places, 271 transitions, 2448 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:20:49,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 283 transitions, 3128 flow [2024-06-14 12:20:50,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 283 transitions, 2890 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:20:50,034 INFO L231 Difference]: Finished difference. Result has 298 places, 273 transitions, 2497 flow [2024-06-14 12:20:50,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2497, PETRI_PLACES=298, PETRI_TRANSITIONS=273} [2024-06-14 12:20:50,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-14 12:20:50,035 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 273 transitions, 2497 flow [2024-06-14 12:20:50,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:50,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:50,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:50,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:20:50,035 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)] === [2024-06-14 12:20:50,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:50,036 INFO L85 PathProgramCache]: Analyzing trace with hash -357097456, now seen corresponding path program 7 times [2024-06-14 12:20:50,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:50,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874762042] [2024-06-14 12:20:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:50,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:51,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:51,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874762042] [2024-06-14 12:20:51,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874762042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:51,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:51,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:51,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678478388] [2024-06-14 12:20:51,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:51,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:51,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:51,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:51,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:51,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:51,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 273 transitions, 2497 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:51,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:51,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:51,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:51,669 INFO L124 PetriNetUnfolderBase]: 567/1098 cut-off events. [2024-06-14 12:20:51,669 INFO L125 PetriNetUnfolderBase]: For 69045/69045 co-relation queries the response was YES. [2024-06-14 12:20:51,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6290 conditions, 1098 events. 567/1098 cut-off events. For 69045/69045 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6367 event pairs, 67 based on Foata normal form. 2/1099 useless extension candidates. Maximal degree in co-relation 6159. Up to 947 conditions per place. [2024-06-14 12:20:51,678 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 235 selfloop transitions, 46 changer transitions 0/284 dead transitions. [2024-06-14 12:20:51,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 284 transitions, 3083 flow [2024-06-14 12:20:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:51,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 12:20:51,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 12:20:51,680 INFO L175 Difference]: Start difference. First operand has 298 places, 273 transitions, 2497 flow. Second operand 11 states and 131 transitions. [2024-06-14 12:20:51,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 284 transitions, 3083 flow [2024-06-14 12:20:51,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 284 transitions, 2799 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-06-14 12:20:51,980 INFO L231 Difference]: Finished difference. Result has 299 places, 273 transitions, 2309 flow [2024-06-14 12:20:51,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2309, PETRI_PLACES=299, PETRI_TRANSITIONS=273} [2024-06-14 12:20:51,981 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-14 12:20:51,981 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 273 transitions, 2309 flow [2024-06-14 12:20:51,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:51,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:51,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:51,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:20:51,981 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)] === [2024-06-14 12:20:51,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:51,982 INFO L85 PathProgramCache]: Analyzing trace with hash -357097766, now seen corresponding path program 20 times [2024-06-14 12:20:51,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:51,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920358557] [2024-06-14 12:20:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:51,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:52,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:52,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920358557] [2024-06-14 12:20:52,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920358557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:52,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:52,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:52,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510604729] [2024-06-14 12:20:52,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:52,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:52,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:52,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:52,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:53,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:53,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 273 transitions, 2309 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:53,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:53,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:53,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:53,501 INFO L124 PetriNetUnfolderBase]: 565/1095 cut-off events. [2024-06-14 12:20:53,501 INFO L125 PetriNetUnfolderBase]: For 60294/60294 co-relation queries the response was YES. [2024-06-14 12:20:53,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5972 conditions, 1095 events. 565/1095 cut-off events. For 60294/60294 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6355 event pairs, 68 based on Foata normal form. 1/1095 useless extension candidates. Maximal degree in co-relation 5840. Up to 783 conditions per place. [2024-06-14 12:20:53,511 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 114 changer transitions 0/285 dead transitions. [2024-06-14 12:20:53,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 285 transitions, 2997 flow [2024-06-14 12:20:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:53,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:20:53,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:20:53,512 INFO L175 Difference]: Start difference. First operand has 299 places, 273 transitions, 2309 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:20:53,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 285 transitions, 2997 flow [2024-06-14 12:20:53,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 285 transitions, 2792 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-14 12:20:53,723 INFO L231 Difference]: Finished difference. Result has 297 places, 275 transitions, 2443 flow [2024-06-14 12:20:53,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2443, PETRI_PLACES=297, PETRI_TRANSITIONS=275} [2024-06-14 12:20:53,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-14 12:20:53,724 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 275 transitions, 2443 flow [2024-06-14 12:20:53,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:53,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:53,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:53,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:20:53,724 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)] === [2024-06-14 12:20:53,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:53,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1611625782, now seen corresponding path program 21 times [2024-06-14 12:20:53,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:53,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18947958] [2024-06-14 12:20:53,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:53,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:54,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:54,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18947958] [2024-06-14 12:20:54,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18947958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:54,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:54,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264185527] [2024-06-14 12:20:54,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:54,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:54,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:54,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:54,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:54,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:54,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 275 transitions, 2443 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:54,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:54,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:54,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:54,922 INFO L124 PetriNetUnfolderBase]: 562/1089 cut-off events. [2024-06-14 12:20:54,922 INFO L125 PetriNetUnfolderBase]: For 56798/56798 co-relation queries the response was YES. [2024-06-14 12:20:54,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5739 conditions, 1089 events. 562/1089 cut-off events. For 56798/56798 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6308 event pairs, 59 based on Foata normal form. 2/1090 useless extension candidates. Maximal degree in co-relation 5609. Up to 918 conditions per place. [2024-06-14 12:20:54,935 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 257 selfloop transitions, 32 changer transitions 0/292 dead transitions. [2024-06-14 12:20:54,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 292 transitions, 3064 flow [2024-06-14 12:20:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:20:54,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:20:54,936 INFO L175 Difference]: Start difference. First operand has 297 places, 275 transitions, 2443 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:20:54,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 292 transitions, 3064 flow [2024-06-14 12:20:55,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 292 transitions, 2741 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-14 12:20:55,162 INFO L231 Difference]: Finished difference. Result has 299 places, 275 transitions, 2188 flow [2024-06-14 12:20:55,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2188, PETRI_PLACES=299, PETRI_TRANSITIONS=275} [2024-06-14 12:20:55,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-14 12:20:55,163 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 275 transitions, 2188 flow [2024-06-14 12:20:55,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:55,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:55,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:55,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:20:55,164 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)] === [2024-06-14 12:20:55,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:55,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1377621042, now seen corresponding path program 1 times [2024-06-14 12:20:55,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:55,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012130977] [2024-06-14 12:20:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:55,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:56,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:56,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:56,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012130977] [2024-06-14 12:20:56,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012130977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:56,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:56,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:56,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343605032] [2024-06-14 12:20:56,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:56,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:56,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:56,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:56,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:56,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:56,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 275 transitions, 2188 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:56,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:56,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:56,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:56,545 INFO L124 PetriNetUnfolderBase]: 573/1110 cut-off events. [2024-06-14 12:20:56,546 INFO L125 PetriNetUnfolderBase]: For 65927/65927 co-relation queries the response was YES. [2024-06-14 12:20:56,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5785 conditions, 1110 events. 573/1110 cut-off events. For 65927/65927 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6460 event pairs, 61 based on Foata normal form. 2/1111 useless extension candidates. Maximal degree in co-relation 5654. Up to 967 conditions per place. [2024-06-14 12:20:56,553 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 256 selfloop transitions, 35 changer transitions 0/294 dead transitions. [2024-06-14 12:20:56,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 294 transitions, 3024 flow [2024-06-14 12:20:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:56,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:20:56,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:20:56,554 INFO L175 Difference]: Start difference. First operand has 299 places, 275 transitions, 2188 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:20:56,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 294 transitions, 3024 flow [2024-06-14 12:20:56,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 294 transitions, 2764 flow, removed 31 selfloop flow, removed 13 redundant places. [2024-06-14 12:20:56,734 INFO L231 Difference]: Finished difference. Result has 297 places, 277 transitions, 2024 flow [2024-06-14 12:20:56,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2024, PETRI_PLACES=297, PETRI_TRANSITIONS=277} [2024-06-14 12:20:56,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-14 12:20:56,735 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 277 transitions, 2024 flow [2024-06-14 12:20:56,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:56,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:56,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:56,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:20:56,735 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)] === [2024-06-14 12:20:56,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:56,736 INFO L85 PathProgramCache]: Analyzing trace with hash -472864424, now seen corresponding path program 2 times [2024-06-14 12:20:56,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:56,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373973489] [2024-06-14 12:20:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:56,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:57,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:57,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:57,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373973489] [2024-06-14 12:20:57,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373973489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:57,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:57,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:57,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806667888] [2024-06-14 12:20:57,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:57,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:57,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:57,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:57,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:57,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:57,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 277 transitions, 2024 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:57,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:57,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:57,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:58,149 INFO L124 PetriNetUnfolderBase]: 577/1118 cut-off events. [2024-06-14 12:20:58,149 INFO L125 PetriNetUnfolderBase]: For 66771/66771 co-relation queries the response was YES. [2024-06-14 12:20:58,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5469 conditions, 1118 events. 577/1118 cut-off events. For 66771/66771 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6508 event pairs, 60 based on Foata normal form. 2/1119 useless extension candidates. Maximal degree in co-relation 5343. Up to 933 conditions per place. [2024-06-14 12:20:58,157 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 257 selfloop transitions, 36 changer transitions 0/296 dead transitions. [2024-06-14 12:20:58,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 296 transitions, 2860 flow [2024-06-14 12:20:58,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:58,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:58,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:20:58,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:20:58,158 INFO L175 Difference]: Start difference. First operand has 297 places, 277 transitions, 2024 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:20:58,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 296 transitions, 2860 flow [2024-06-14 12:20:58,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 296 transitions, 2757 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:20:58,401 INFO L231 Difference]: Finished difference. Result has 300 places, 278 transitions, 2011 flow [2024-06-14 12:20:58,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2011, PETRI_PLACES=300, PETRI_TRANSITIONS=278} [2024-06-14 12:20:58,402 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-14 12:20:58,402 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 278 transitions, 2011 flow [2024-06-14 12:20:58,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:58,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:58,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:58,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:20:58,403 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)] === [2024-06-14 12:20:58,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:58,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1230011442, now seen corresponding path program 3 times [2024-06-14 12:20:58,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:58,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143112712] [2024-06-14 12:20:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:58,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:59,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:59,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143112712] [2024-06-14 12:20:59,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143112712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:59,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:59,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:20:59,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888438474] [2024-06-14 12:20:59,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:59,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:20:59,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:59,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:20:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:20:59,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:20:59,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 278 transitions, 2011 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:20:59,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:59,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:20:59,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:59,903 INFO L124 PetriNetUnfolderBase]: 581/1126 cut-off events. [2024-06-14 12:20:59,904 INFO L125 PetriNetUnfolderBase]: For 68291/68291 co-relation queries the response was YES. [2024-06-14 12:20:59,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5475 conditions, 1126 events. 581/1126 cut-off events. For 68291/68291 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6588 event pairs, 56 based on Foata normal form. 2/1127 useless extension candidates. Maximal degree in co-relation 5348. Up to 907 conditions per place. [2024-06-14 12:20:59,915 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 262 selfloop transitions, 33 changer transitions 0/298 dead transitions. [2024-06-14 12:20:59,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 298 transitions, 2857 flow [2024-06-14 12:20:59,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:20:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:20:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:20:59,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:20:59,917 INFO L175 Difference]: Start difference. First operand has 300 places, 278 transitions, 2011 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:20:59,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 298 transitions, 2857 flow [2024-06-14 12:21:00,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 298 transitions, 2777 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:00,143 INFO L231 Difference]: Finished difference. Result has 302 places, 279 transitions, 2017 flow [2024-06-14 12:21:00,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2017, PETRI_PLACES=302, PETRI_TRANSITIONS=279} [2024-06-14 12:21:00,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-14 12:21:00,143 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 279 transitions, 2017 flow [2024-06-14 12:21:00,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:00,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:00,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:00,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:21:00,144 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)] === [2024-06-14 12:21:00,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:00,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1377828432, now seen corresponding path program 4 times [2024-06-14 12:21:00,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:00,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146788665] [2024-06-14 12:21:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:00,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:01,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:01,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146788665] [2024-06-14 12:21:01,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146788665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:01,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:01,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:01,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657663931] [2024-06-14 12:21:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:01,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:01,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:01,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:01,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:01,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:01,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 279 transitions, 2017 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:01,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:01,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:01,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:01,618 INFO L124 PetriNetUnfolderBase]: 591/1144 cut-off events. [2024-06-14 12:21:01,618 INFO L125 PetriNetUnfolderBase]: For 69937/69937 co-relation queries the response was YES. [2024-06-14 12:21:01,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5570 conditions, 1144 events. 591/1144 cut-off events. For 69937/69937 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6712 event pairs, 68 based on Foata normal form. 2/1145 useless extension candidates. Maximal degree in co-relation 5442. Up to 1034 conditions per place. [2024-06-14 12:21:01,628 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 26 changer transitions 0/297 dead transitions. [2024-06-14 12:21:01,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 297 transitions, 2685 flow [2024-06-14 12:21:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:21:01,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:21:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 12:21:01,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-14 12:21:01,631 INFO L175 Difference]: Start difference. First operand has 302 places, 279 transitions, 2017 flow. Second operand 12 states and 139 transitions. [2024-06-14 12:21:01,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 297 transitions, 2685 flow [2024-06-14 12:21:01,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 297 transitions, 2601 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:01,886 INFO L231 Difference]: Finished difference. Result has 307 places, 284 transitions, 2053 flow [2024-06-14 12:21:01,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2053, PETRI_PLACES=307, PETRI_TRANSITIONS=284} [2024-06-14 12:21:01,887 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-14 12:21:01,887 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 284 transitions, 2053 flow [2024-06-14 12:21:01,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:01,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:01,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:01,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:21:01,888 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)] === [2024-06-14 12:21:01,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:01,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2017662002, now seen corresponding path program 5 times [2024-06-14 12:21:01,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:01,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863793210] [2024-06-14 12:21:01,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:01,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:02,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:02,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863793210] [2024-06-14 12:21:02,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863793210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:02,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:02,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:02,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824336797] [2024-06-14 12:21:02,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:02,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:02,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:02,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:02,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:02,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:02,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 284 transitions, 2053 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:02,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:02,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:02,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:03,318 INFO L124 PetriNetUnfolderBase]: 595/1152 cut-off events. [2024-06-14 12:21:03,318 INFO L125 PetriNetUnfolderBase]: For 70914/70914 co-relation queries the response was YES. [2024-06-14 12:21:03,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5593 conditions, 1152 events. 595/1152 cut-off events. For 70914/70914 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6735 event pairs, 54 based on Foata normal form. 2/1153 useless extension candidates. Maximal degree in co-relation 5462. Up to 1004 conditions per place. [2024-06-14 12:21:03,327 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 279 selfloop transitions, 22 changer transitions 0/304 dead transitions. [2024-06-14 12:21:03,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 304 transitions, 2715 flow [2024-06-14 12:21:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:03,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:03,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:21:03,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-14 12:21:03,328 INFO L175 Difference]: Start difference. First operand has 307 places, 284 transitions, 2053 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:21:03,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 304 transitions, 2715 flow [2024-06-14 12:21:03,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 304 transitions, 2665 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:21:03,534 INFO L231 Difference]: Finished difference. Result has 310 places, 285 transitions, 2069 flow [2024-06-14 12:21:03,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2069, PETRI_PLACES=310, PETRI_TRANSITIONS=285} [2024-06-14 12:21:03,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-14 12:21:03,534 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 285 transitions, 2069 flow [2024-06-14 12:21:03,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:03,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:03,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:03,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:21:03,535 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)] === [2024-06-14 12:21:03,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:03,536 INFO L85 PathProgramCache]: Analyzing trace with hash 901516986, now seen corresponding path program 6 times [2024-06-14 12:21:03,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:03,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195630713] [2024-06-14 12:21:03,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:03,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:04,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:04,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195630713] [2024-06-14 12:21:04,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195630713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:04,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:04,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124774305] [2024-06-14 12:21:04,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:04,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:04,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:04,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:04,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 285 transitions, 2069 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:04,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:04,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:04,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:05,187 INFO L124 PetriNetUnfolderBase]: 599/1159 cut-off events. [2024-06-14 12:21:05,187 INFO L125 PetriNetUnfolderBase]: For 72816/72816 co-relation queries the response was YES. [2024-06-14 12:21:05,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5661 conditions, 1159 events. 599/1159 cut-off events. For 72816/72816 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6790 event pairs, 68 based on Foata normal form. 2/1160 useless extension candidates. Maximal degree in co-relation 5529. Up to 953 conditions per place. [2024-06-14 12:21:05,195 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 232 selfloop transitions, 64 changer transitions 0/299 dead transitions. [2024-06-14 12:21:05,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 299 transitions, 2709 flow [2024-06-14 12:21:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:05,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:21:05,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:21:05,197 INFO L175 Difference]: Start difference. First operand has 310 places, 285 transitions, 2069 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:21:05,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 299 transitions, 2709 flow [2024-06-14 12:21:05,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 299 transitions, 2653 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:05,446 INFO L231 Difference]: Finished difference. Result has 312 places, 286 transitions, 2165 flow [2024-06-14 12:21:05,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2165, PETRI_PLACES=312, PETRI_TRANSITIONS=286} [2024-06-14 12:21:05,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-14 12:21:05,447 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 286 transitions, 2165 flow [2024-06-14 12:21:05,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:05,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:05,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:05,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:21:05,447 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)] === [2024-06-14 12:21:05,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:05,448 INFO L85 PathProgramCache]: Analyzing trace with hash 901309596, now seen corresponding path program 7 times [2024-06-14 12:21:05,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:05,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461549996] [2024-06-14 12:21:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:06,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:06,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461549996] [2024-06-14 12:21:06,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461549996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:06,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:06,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:06,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521841845] [2024-06-14 12:21:06,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:06,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:06,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:06,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 286 transitions, 2165 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:06,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:06,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:06,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:07,059 INFO L124 PetriNetUnfolderBase]: 603/1167 cut-off events. [2024-06-14 12:21:07,059 INFO L125 PetriNetUnfolderBase]: For 74334/74334 co-relation queries the response was YES. [2024-06-14 12:21:07,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5786 conditions, 1167 events. 603/1167 cut-off events. For 74334/74334 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6863 event pairs, 68 based on Foata normal form. 2/1168 useless extension candidates. Maximal degree in co-relation 5653. Up to 937 conditions per place. [2024-06-14 12:21:07,069 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 233 selfloop transitions, 65 changer transitions 0/301 dead transitions. [2024-06-14 12:21:07,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 301 transitions, 2813 flow [2024-06-14 12:21:07,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:07,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:07,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:21:07,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:21:07,070 INFO L175 Difference]: Start difference. First operand has 312 places, 286 transitions, 2165 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:21:07,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 301 transitions, 2813 flow [2024-06-14 12:21:07,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 301 transitions, 2671 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:07,365 INFO L231 Difference]: Finished difference. Result has 314 places, 287 transitions, 2180 flow [2024-06-14 12:21:07,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2023, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2180, PETRI_PLACES=314, PETRI_TRANSITIONS=287} [2024-06-14 12:21:07,365 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-14 12:21:07,366 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 287 transitions, 2180 flow [2024-06-14 12:21:07,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:07,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:07,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:07,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:21:07,366 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)] === [2024-06-14 12:21:07,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:07,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1900624912, now seen corresponding path program 8 times [2024-06-14 12:21:07,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:07,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279742646] [2024-06-14 12:21:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:07,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:08,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:08,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279742646] [2024-06-14 12:21:08,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279742646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:08,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:08,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:08,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959888599] [2024-06-14 12:21:08,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:08,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:08,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:08,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:08,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:08,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:08,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 287 transitions, 2180 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:08,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:08,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:08,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:08,963 INFO L124 PetriNetUnfolderBase]: 614/1189 cut-off events. [2024-06-14 12:21:08,963 INFO L125 PetriNetUnfolderBase]: For 86971/86971 co-relation queries the response was YES. [2024-06-14 12:21:08,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6138 conditions, 1189 events. 614/1189 cut-off events. For 86971/86971 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7022 event pairs, 71 based on Foata normal form. 2/1190 useless extension candidates. Maximal degree in co-relation 6004. Up to 935 conditions per place. [2024-06-14 12:21:08,972 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 48 changer transitions 0/305 dead transitions. [2024-06-14 12:21:08,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 305 transitions, 3072 flow [2024-06-14 12:21:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:21:08,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:21:08,973 INFO L175 Difference]: Start difference. First operand has 314 places, 287 transitions, 2180 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:21:08,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 305 transitions, 3072 flow [2024-06-14 12:21:09,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 305 transitions, 2927 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:09,217 INFO L231 Difference]: Finished difference. Result has 316 places, 289 transitions, 2182 flow [2024-06-14 12:21:09,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2182, PETRI_PLACES=316, PETRI_TRANSITIONS=289} [2024-06-14 12:21:09,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-14 12:21:09,217 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 289 transitions, 2182 flow [2024-06-14 12:21:09,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:09,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:09,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:09,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:21:09,218 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)] === [2024-06-14 12:21:09,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:09,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1789014056, now seen corresponding path program 9 times [2024-06-14 12:21:09,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:09,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427980012] [2024-06-14 12:21:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:09,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:10,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:10,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427980012] [2024-06-14 12:21:10,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427980012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:10,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:10,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:10,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155544925] [2024-06-14 12:21:10,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:10,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:10,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:10,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:10,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 289 transitions, 2182 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:10,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:10,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:10,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:10,788 INFO L124 PetriNetUnfolderBase]: 618/1197 cut-off events. [2024-06-14 12:21:10,788 INFO L125 PetriNetUnfolderBase]: For 88667/88667 co-relation queries the response was YES. [2024-06-14 12:21:10,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6170 conditions, 1197 events. 618/1197 cut-off events. For 88667/88667 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7095 event pairs, 79 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 6035. Up to 1038 conditions per place. [2024-06-14 12:21:10,798 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 249 selfloop transitions, 51 changer transitions 0/303 dead transitions. [2024-06-14 12:21:10,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 303 transitions, 2836 flow [2024-06-14 12:21:10,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:10,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:21:10,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:21:10,799 INFO L175 Difference]: Start difference. First operand has 316 places, 289 transitions, 2182 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:21:10,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 303 transitions, 2836 flow [2024-06-14 12:21:11,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 303 transitions, 2750 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 12:21:11,111 INFO L231 Difference]: Finished difference. Result has 320 places, 290 transitions, 2228 flow [2024-06-14 12:21:11,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2228, PETRI_PLACES=320, PETRI_TRANSITIONS=290} [2024-06-14 12:21:11,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-14 12:21:11,111 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 290 transitions, 2228 flow [2024-06-14 12:21:11,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:11,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:11,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:11,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:21:11,112 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)] === [2024-06-14 12:21:11,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:11,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2100278242, now seen corresponding path program 10 times [2024-06-14 12:21:11,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:11,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014547847] [2024-06-14 12:21:11,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:11,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:12,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014547847] [2024-06-14 12:21:12,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014547847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:12,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:12,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:12,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889498012] [2024-06-14 12:21:12,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:12,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:12,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:12,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:12,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:12,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:12,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 290 transitions, 2228 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:12,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:12,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:12,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:12,828 INFO L124 PetriNetUnfolderBase]: 622/1205 cut-off events. [2024-06-14 12:21:12,828 INFO L125 PetriNetUnfolderBase]: For 90111/90111 co-relation queries the response was YES. [2024-06-14 12:21:12,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6260 conditions, 1205 events. 622/1205 cut-off events. For 90111/90111 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7154 event pairs, 81 based on Foata normal form. 2/1206 useless extension candidates. Maximal degree in co-relation 6123. Up to 1046 conditions per place. [2024-06-14 12:21:12,840 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 47 changer transitions 0/304 dead transitions. [2024-06-14 12:21:12,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 304 transitions, 2882 flow [2024-06-14 12:21:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:12,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:21:12,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:21:12,841 INFO L175 Difference]: Start difference. First operand has 320 places, 290 transitions, 2228 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:21:12,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 304 transitions, 2882 flow [2024-06-14 12:21:13,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 304 transitions, 2766 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:13,219 INFO L231 Difference]: Finished difference. Result has 322 places, 291 transitions, 2234 flow [2024-06-14 12:21:13,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2234, PETRI_PLACES=322, PETRI_TRANSITIONS=291} [2024-06-14 12:21:13,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-14 12:21:13,220 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 291 transitions, 2234 flow [2024-06-14 12:21:13,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:13,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:13,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:13,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:21:13,220 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)] === [2024-06-14 12:21:13,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2100070852, now seen corresponding path program 11 times [2024-06-14 12:21:13,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:13,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375219510] [2024-06-14 12:21:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:13,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:14,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:14,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375219510] [2024-06-14 12:21:14,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375219510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:14,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:14,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:14,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396368241] [2024-06-14 12:21:14,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:14,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:14,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:14,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:14,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:14,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:14,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 291 transitions, 2234 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:14,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:14,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:14,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:14,820 INFO L124 PetriNetUnfolderBase]: 619/1200 cut-off events. [2024-06-14 12:21:14,820 INFO L125 PetriNetUnfolderBase]: For 80237/80237 co-relation queries the response was YES. [2024-06-14 12:21:14,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6001 conditions, 1200 events. 619/1200 cut-off events. For 80237/80237 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7149 event pairs, 78 based on Foata normal form. 2/1201 useless extension candidates. Maximal degree in co-relation 5863. Up to 1011 conditions per place. [2024-06-14 12:21:14,830 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 253 selfloop transitions, 49 changer transitions 0/305 dead transitions. [2024-06-14 12:21:14,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 305 transitions, 2870 flow [2024-06-14 12:21:14,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:21:14,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:21:14,832 INFO L175 Difference]: Start difference. First operand has 322 places, 291 transitions, 2234 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:21:14,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 305 transitions, 2870 flow [2024-06-14 12:21:15,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 305 transitions, 2748 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:15,046 INFO L231 Difference]: Finished difference. Result has 324 places, 291 transitions, 2215 flow [2024-06-14 12:21:15,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2215, PETRI_PLACES=324, PETRI_TRANSITIONS=291} [2024-06-14 12:21:15,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-14 12:21:15,047 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 291 transitions, 2215 flow [2024-06-14 12:21:15,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:15,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:15,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:15,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:21:15,047 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)] === [2024-06-14 12:21:15,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:15,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1042345028, now seen corresponding path program 12 times [2024-06-14 12:21:15,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:15,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449441441] [2024-06-14 12:21:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:15,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:15,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:15,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449441441] [2024-06-14 12:21:15,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449441441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:15,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:15,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:15,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342860608] [2024-06-14 12:21:15,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:15,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:15,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:15,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:16,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:16,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 291 transitions, 2215 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:16,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:16,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:16,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:16,601 INFO L124 PetriNetUnfolderBase]: 630/1221 cut-off events. [2024-06-14 12:21:16,602 INFO L125 PetriNetUnfolderBase]: For 93463/93463 co-relation queries the response was YES. [2024-06-14 12:21:16,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6340 conditions, 1221 events. 630/1221 cut-off events. For 93463/93463 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7288 event pairs, 77 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 6201. Up to 999 conditions per place. [2024-06-14 12:21:16,609 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 261 selfloop transitions, 45 changer transitions 0/309 dead transitions. [2024-06-14 12:21:16,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 309 transitions, 3127 flow [2024-06-14 12:21:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:16,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:21:16,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 12:21:16,610 INFO L175 Difference]: Start difference. First operand has 324 places, 291 transitions, 2215 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:21:16,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 309 transitions, 3127 flow [2024-06-14 12:21:16,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 309 transitions, 3008 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:21:16,919 INFO L231 Difference]: Finished difference. Result has 325 places, 293 transitions, 2241 flow [2024-06-14 12:21:16,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2241, PETRI_PLACES=325, PETRI_TRANSITIONS=293} [2024-06-14 12:21:16,919 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-14 12:21:16,919 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 293 transitions, 2241 flow [2024-06-14 12:21:16,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:16,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:16,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:16,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:21:16,920 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)] === [2024-06-14 12:21:16,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:16,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1048058948, now seen corresponding path program 13 times [2024-06-14 12:21:16,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:16,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342287693] [2024-06-14 12:21:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:17,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:17,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342287693] [2024-06-14 12:21:17,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342287693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:17,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:17,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:17,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732560552] [2024-06-14 12:21:17,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:17,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:17,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:17,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:17,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:18,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:18,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 293 transitions, 2241 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:18,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:18,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:18,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:18,593 INFO L124 PetriNetUnfolderBase]: 634/1229 cut-off events. [2024-06-14 12:21:18,593 INFO L125 PetriNetUnfolderBase]: For 95460/95460 co-relation queries the response was YES. [2024-06-14 12:21:18,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6401 conditions, 1229 events. 634/1229 cut-off events. For 95460/95460 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7363 event pairs, 85 based on Foata normal form. 2/1230 useless extension candidates. Maximal degree in co-relation 6261. Up to 1070 conditions per place. [2024-06-14 12:21:18,603 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 259 selfloop transitions, 45 changer transitions 0/307 dead transitions. [2024-06-14 12:21:18,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 307 transitions, 2905 flow [2024-06-14 12:21:18,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:21:18,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:21:18,605 INFO L175 Difference]: Start difference. First operand has 325 places, 293 transitions, 2241 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:21:18,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 307 transitions, 2905 flow [2024-06-14 12:21:18,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 307 transitions, 2814 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 12:21:18,879 INFO L231 Difference]: Finished difference. Result has 329 places, 294 transitions, 2272 flow [2024-06-14 12:21:18,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2272, PETRI_PLACES=329, PETRI_TRANSITIONS=294} [2024-06-14 12:21:18,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-14 12:21:18,879 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 294 transitions, 2272 flow [2024-06-14 12:21:18,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:18,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:18,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:18,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:21:18,880 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)] === [2024-06-14 12:21:18,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:18,880 INFO L85 PathProgramCache]: Analyzing trace with hash 903961028, now seen corresponding path program 14 times [2024-06-14 12:21:18,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:18,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140917206] [2024-06-14 12:21:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:18,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:19,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:19,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140917206] [2024-06-14 12:21:19,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140917206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:19,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:19,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:19,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104518002] [2024-06-14 12:21:19,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:19,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:19,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:19,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:19,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:19,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:19,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 294 transitions, 2272 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:19,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:19,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:19,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:20,418 INFO L124 PetriNetUnfolderBase]: 631/1224 cut-off events. [2024-06-14 12:21:20,418 INFO L125 PetriNetUnfolderBase]: For 84673/84673 co-relation queries the response was YES. [2024-06-14 12:21:20,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6159 conditions, 1224 events. 631/1224 cut-off events. For 84673/84673 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7324 event pairs, 82 based on Foata normal form. 2/1225 useless extension candidates. Maximal degree in co-relation 6017. Up to 1041 conditions per place. [2024-06-14 12:21:20,428 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 259 selfloop transitions, 46 changer transitions 0/308 dead transitions. [2024-06-14 12:21:20,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 308 transitions, 2914 flow [2024-06-14 12:21:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:20,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:21:20,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:21:20,429 INFO L175 Difference]: Start difference. First operand has 329 places, 294 transitions, 2272 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:21:20,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 308 transitions, 2914 flow [2024-06-14 12:21:20,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 308 transitions, 2794 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:20,692 INFO L231 Difference]: Finished difference. Result has 331 places, 294 transitions, 2249 flow [2024-06-14 12:21:20,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2249, PETRI_PLACES=331, PETRI_TRANSITIONS=294} [2024-06-14 12:21:20,693 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-14 12:21:20,693 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 294 transitions, 2249 flow [2024-06-14 12:21:20,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:20,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:20,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:20,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:21:20,693 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)] === [2024-06-14 12:21:20,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash -104579888, now seen corresponding path program 15 times [2024-06-14 12:21:20,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:20,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450223248] [2024-06-14 12:21:20,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:20,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:21,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:21,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450223248] [2024-06-14 12:21:21,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450223248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:21,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:21,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:21,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651272658] [2024-06-14 12:21:21,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:21,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:21,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:21,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:21,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:21,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:21,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 294 transitions, 2249 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:21,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:21,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:21,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:22,165 INFO L124 PetriNetUnfolderBase]: 635/1232 cut-off events. [2024-06-14 12:21:22,166 INFO L125 PetriNetUnfolderBase]: For 86276/86276 co-relation queries the response was YES. [2024-06-14 12:21:22,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6186 conditions, 1232 events. 635/1232 cut-off events. For 86276/86276 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7392 event pairs, 74 based on Foata normal form. 2/1233 useless extension candidates. Maximal degree in co-relation 6043. Up to 847 conditions per place. [2024-06-14 12:21:22,173 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 54 changer transitions 0/311 dead transitions. [2024-06-14 12:21:22,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 311 transitions, 2927 flow [2024-06-14 12:21:22,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:22,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:21:22,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:21:22,174 INFO L175 Difference]: Start difference. First operand has 331 places, 294 transitions, 2249 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:21:22,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 311 transitions, 2927 flow [2024-06-14 12:21:22,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 311 transitions, 2828 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 12:21:22,473 INFO L231 Difference]: Finished difference. Result has 332 places, 295 transitions, 2291 flow [2024-06-14 12:21:22,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2291, PETRI_PLACES=332, PETRI_TRANSITIONS=295} [2024-06-14 12:21:22,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-14 12:21:22,474 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 295 transitions, 2291 flow [2024-06-14 12:21:22,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:22,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:22,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:22,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:21:22,474 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)] === [2024-06-14 12:21:22,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:22,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1912309082, now seen corresponding path program 1 times [2024-06-14 12:21:22,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:22,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812974714] [2024-06-14 12:21:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:22,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:23,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:23,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812974714] [2024-06-14 12:21:23,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812974714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:23,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:23,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:21:23,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656017621] [2024-06-14 12:21:23,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:23,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:21:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:23,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:21:23,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:21:23,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:23,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 295 transitions, 2291 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:23,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:23,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:23,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:24,089 INFO L124 PetriNetUnfolderBase]: 647/1260 cut-off events. [2024-06-14 12:21:24,089 INFO L125 PetriNetUnfolderBase]: For 125912/125912 co-relation queries the response was YES. [2024-06-14 12:21:24,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6499 conditions, 1260 events. 647/1260 cut-off events. For 125912/125912 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7627 event pairs, 82 based on Foata normal form. 8/1267 useless extension candidates. Maximal degree in co-relation 6355. Up to 1099 conditions per place. [2024-06-14 12:21:24,100 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 266 selfloop transitions, 35 changer transitions 10/314 dead transitions. [2024-06-14 12:21:24,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 314 transitions, 3057 flow [2024-06-14 12:21:24,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:21:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:21:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 12:21:24,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-14 12:21:24,101 INFO L175 Difference]: Start difference. First operand has 332 places, 295 transitions, 2291 flow. Second operand 12 states and 143 transitions. [2024-06-14 12:21:24,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 314 transitions, 3057 flow [2024-06-14 12:21:24,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 314 transitions, 2928 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:24,456 INFO L231 Difference]: Finished difference. Result has 335 places, 291 transitions, 2204 flow [2024-06-14 12:21:24,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2204, PETRI_PLACES=335, PETRI_TRANSITIONS=291} [2024-06-14 12:21:24,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-14 12:21:24,457 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 291 transitions, 2204 flow [2024-06-14 12:21:24,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:24,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:24,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:24,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:21:24,457 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)] === [2024-06-14 12:21:24,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:24,457 INFO L85 PathProgramCache]: Analyzing trace with hash 43245038, now seen corresponding path program 2 times [2024-06-14 12:21:24,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:24,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910027483] [2024-06-14 12:21:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:24,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:26,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:26,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910027483] [2024-06-14 12:21:26,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910027483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:26,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:26,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:21:26,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358602604] [2024-06-14 12:21:26,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:26,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:21:26,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:26,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:21:26,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:21:26,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:26,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 291 transitions, 2204 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:26,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:26,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:26,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:27,059 INFO L124 PetriNetUnfolderBase]: 671/1306 cut-off events. [2024-06-14 12:21:27,059 INFO L125 PetriNetUnfolderBase]: For 126184/126184 co-relation queries the response was YES. [2024-06-14 12:21:27,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6635 conditions, 1306 events. 671/1306 cut-off events. For 126184/126184 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 7967 event pairs, 86 based on Foata normal form. 8/1313 useless extension candidates. Maximal degree in co-relation 6490. Up to 1104 conditions per place. [2024-06-14 12:21:27,071 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 266 selfloop transitions, 45 changer transitions 13/327 dead transitions. [2024-06-14 12:21:27,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 327 transitions, 3137 flow [2024-06-14 12:21:27,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:21:27,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:21:27,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 169 transitions. [2024-06-14 12:21:27,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37723214285714285 [2024-06-14 12:21:27,072 INFO L175 Difference]: Start difference. First operand has 335 places, 291 transitions, 2204 flow. Second operand 14 states and 169 transitions. [2024-06-14 12:21:27,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 327 transitions, 3137 flow [2024-06-14 12:21:27,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 327 transitions, 3055 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:21:27,350 INFO L231 Difference]: Finished difference. Result has 340 places, 304 transitions, 2393 flow [2024-06-14 12:21:27,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2393, PETRI_PLACES=340, PETRI_TRANSITIONS=304} [2024-06-14 12:21:27,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-14 12:21:27,351 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 304 transitions, 2393 flow [2024-06-14 12:21:27,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:27,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:27,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:27,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:21:27,352 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)] === [2024-06-14 12:21:27,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:27,352 INFO L85 PathProgramCache]: Analyzing trace with hash 901524922, now seen corresponding path program 3 times [2024-06-14 12:21:27,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:27,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600105285] [2024-06-14 12:21:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:27,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:28,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:28,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600105285] [2024-06-14 12:21:28,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600105285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:28,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:28,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:21:28,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403310169] [2024-06-14 12:21:28,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:28,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:21:28,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:28,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:21:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:21:28,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:28,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 304 transitions, 2393 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:28,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:28,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:28,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:29,418 INFO L124 PetriNetUnfolderBase]: 659/1289 cut-off events. [2024-06-14 12:21:29,418 INFO L125 PetriNetUnfolderBase]: For 123163/123163 co-relation queries the response was YES. [2024-06-14 12:21:29,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 1289 events. 659/1289 cut-off events. For 123163/123163 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7825 event pairs, 84 based on Foata normal form. 8/1296 useless extension candidates. Maximal degree in co-relation 6476. Up to 1037 conditions per place. [2024-06-14 12:21:29,429 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 67 changer transitions 12/321 dead transitions. [2024-06-14 12:21:29,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 321 transitions, 3163 flow [2024-06-14 12:21:29,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:21:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:21:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 12:21:29,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 12:21:29,430 INFO L175 Difference]: Start difference. First operand has 340 places, 304 transitions, 2393 flow. Second operand 12 states and 147 transitions. [2024-06-14 12:21:29,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 321 transitions, 3163 flow [2024-06-14 12:21:29,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 321 transitions, 3103 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 12:21:29,713 INFO L231 Difference]: Finished difference. Result has 341 places, 298 transitions, 2413 flow [2024-06-14 12:21:29,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2413, PETRI_PLACES=341, PETRI_TRANSITIONS=298} [2024-06-14 12:21:29,714 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-14 12:21:29,714 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 298 transitions, 2413 flow [2024-06-14 12:21:29,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:29,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:29,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:29,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:21:29,714 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)] === [2024-06-14 12:21:29,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:29,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2107704788, now seen corresponding path program 4 times [2024-06-14 12:21:29,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:29,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788049773] [2024-06-14 12:21:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:29,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:30,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:30,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788049773] [2024-06-14 12:21:30,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788049773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:30,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:30,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:21:30,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338732427] [2024-06-14 12:21:30,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:30,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:21:30,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:30,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:21:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:21:30,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:30,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 298 transitions, 2413 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:30,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:30,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:30,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:31,445 INFO L124 PetriNetUnfolderBase]: 667/1313 cut-off events. [2024-06-14 12:21:31,445 INFO L125 PetriNetUnfolderBase]: For 161064/161064 co-relation queries the response was YES. [2024-06-14 12:21:31,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 1313 events. 667/1313 cut-off events. For 161064/161064 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8015 event pairs, 90 based on Foata normal form. 6/1318 useless extension candidates. Maximal degree in co-relation 7627. Up to 980 conditions per place. [2024-06-14 12:21:31,457 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 223 selfloop transitions, 87 changer transitions 6/319 dead transitions. [2024-06-14 12:21:31,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 319 transitions, 3465 flow [2024-06-14 12:21:31,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:21:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:21:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:21:31,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-14 12:21:31,458 INFO L175 Difference]: Start difference. First operand has 341 places, 298 transitions, 2413 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:21:31,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 319 transitions, 3465 flow [2024-06-14 12:21:31,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 319 transitions, 3313 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-14 12:21:31,887 INFO L231 Difference]: Finished difference. Result has 339 places, 296 transitions, 2437 flow [2024-06-14 12:21:31,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2271, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2437, PETRI_PLACES=339, PETRI_TRANSITIONS=296} [2024-06-14 12:21:31,888 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-14 12:21:31,888 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 296 transitions, 2437 flow [2024-06-14 12:21:31,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:31,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:31,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:31,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:21:31,888 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)] === [2024-06-14 12:21:31,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1102614172, now seen corresponding path program 5 times [2024-06-14 12:21:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:31,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520501451] [2024-06-14 12:21:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:31,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:33,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:33,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520501451] [2024-06-14 12:21:33,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520501451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:33,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:33,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:21:33,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195576779] [2024-06-14 12:21:33,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:33,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:21:33,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:33,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:21:33,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:21:33,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:33,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 296 transitions, 2437 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:33,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:33,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:33,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:33,717 INFO L124 PetriNetUnfolderBase]: 665/1308 cut-off events. [2024-06-14 12:21:33,717 INFO L125 PetriNetUnfolderBase]: For 169388/169388 co-relation queries the response was YES. [2024-06-14 12:21:33,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 1308 events. 665/1308 cut-off events. For 169388/169388 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8010 event pairs, 100 based on Foata normal form. 8/1315 useless extension candidates. Maximal degree in co-relation 7682. Up to 1107 conditions per place. [2024-06-14 12:21:33,728 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 53 changer transitions 12/313 dead transitions. [2024-06-14 12:21:33,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 313 transitions, 3187 flow [2024-06-14 12:21:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:21:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:21:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-14 12:21:33,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:21:33,729 INFO L175 Difference]: Start difference. First operand has 339 places, 296 transitions, 2437 flow. Second operand 12 states and 144 transitions. [2024-06-14 12:21:33,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 313 transitions, 3187 flow [2024-06-14 12:21:34,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 313 transitions, 3021 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:21:34,196 INFO L231 Difference]: Finished difference. Result has 338 places, 290 transitions, 2319 flow [2024-06-14 12:21:34,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2271, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2319, PETRI_PLACES=338, PETRI_TRANSITIONS=290} [2024-06-14 12:21:34,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-14 12:21:34,197 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 290 transitions, 2319 flow [2024-06-14 12:21:34,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:34,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:34,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:34,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:21:34,197 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)] === [2024-06-14 12:21:34,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:34,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2107695488, now seen corresponding path program 6 times [2024-06-14 12:21:34,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:34,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786558348] [2024-06-14 12:21:34,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:34,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:35,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:35,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786558348] [2024-06-14 12:21:35,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786558348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:35,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:35,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:21:35,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090069057] [2024-06-14 12:21:35,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:35,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:21:35,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:35,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:21:35,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:21:35,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:35,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 290 transitions, 2319 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:35,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:35,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:35,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:35,810 INFO L124 PetriNetUnfolderBase]: 655/1293 cut-off events. [2024-06-14 12:21:35,810 INFO L125 PetriNetUnfolderBase]: For 168408/168408 co-relation queries the response was YES. [2024-06-14 12:21:35,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7667 conditions, 1293 events. 655/1293 cut-off events. For 168408/168408 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7879 event pairs, 94 based on Foata normal form. 8/1300 useless extension candidates. Maximal degree in co-relation 7522. Up to 1038 conditions per place. [2024-06-14 12:21:35,821 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 77 changer transitions 11/307 dead transitions. [2024-06-14 12:21:35,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 307 transitions, 3057 flow [2024-06-14 12:21:35,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:21:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:21:35,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 12:21:35,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 12:21:35,822 INFO L175 Difference]: Start difference. First operand has 338 places, 290 transitions, 2319 flow. Second operand 12 states and 146 transitions. [2024-06-14 12:21:35,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 307 transitions, 3057 flow [2024-06-14 12:21:36,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 307 transitions, 2947 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:21:36,243 INFO L231 Difference]: Finished difference. Result has 336 places, 285 transitions, 2322 flow [2024-06-14 12:21:36,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2322, PETRI_PLACES=336, PETRI_TRANSITIONS=285} [2024-06-14 12:21:36,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-14 12:21:36,243 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 285 transitions, 2322 flow [2024-06-14 12:21:36,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:36,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:36,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:36,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:21:36,244 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)] === [2024-06-14 12:21:36,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:36,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1095464332, now seen corresponding path program 7 times [2024-06-14 12:21:36,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:36,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304834912] [2024-06-14 12:21:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:36,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:37,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:37,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304834912] [2024-06-14 12:21:37,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304834912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:37,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:37,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:21:37,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122319197] [2024-06-14 12:21:37,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:37,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:21:37,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:37,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:21:37,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:21:37,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:37,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 285 transitions, 2322 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:37,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:37,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:37,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:38,242 INFO L124 PetriNetUnfolderBase]: 647/1280 cut-off events. [2024-06-14 12:21:38,242 INFO L125 PetriNetUnfolderBase]: For 164128/164128 co-relation queries the response was YES. [2024-06-14 12:21:38,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7622 conditions, 1280 events. 647/1280 cut-off events. For 164128/164128 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7783 event pairs, 100 based on Foata normal form. 8/1287 useless extension candidates. Maximal degree in co-relation 7478. Up to 1081 conditions per place. [2024-06-14 12:21:38,253 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 46 changer transitions 12/302 dead transitions. [2024-06-14 12:21:38,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 302 transitions, 3050 flow [2024-06-14 12:21:38,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:21:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:21:38,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-14 12:21:38,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:21:38,254 INFO L175 Difference]: Start difference. First operand has 336 places, 285 transitions, 2322 flow. Second operand 12 states and 144 transitions. [2024-06-14 12:21:38,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 302 transitions, 3050 flow [2024-06-14 12:21:38,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 302 transitions, 2886 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:21:38,848 INFO L231 Difference]: Finished difference. Result has 332 places, 279 transitions, 2194 flow [2024-06-14 12:21:38,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2194, PETRI_PLACES=332, PETRI_TRANSITIONS=279} [2024-06-14 12:21:38,849 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-14 12:21:38,849 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 279 transitions, 2194 flow [2024-06-14 12:21:38,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:38,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:38,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:38,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:21:38,850 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)] === [2024-06-14 12:21:38,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:38,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1934930876, now seen corresponding path program 16 times [2024-06-14 12:21:38,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:38,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143041930] [2024-06-14 12:21:38,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:38,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:39,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:39,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143041930] [2024-06-14 12:21:39,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143041930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:39,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:39,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:39,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044473443] [2024-06-14 12:21:39,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:39,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:39,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:39,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:39,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:39,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:39,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 279 transitions, 2194 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:39,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:39,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:39,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:40,415 INFO L124 PetriNetUnfolderBase]: 629/1246 cut-off events. [2024-06-14 12:21:40,415 INFO L125 PetriNetUnfolderBase]: For 125409/125409 co-relation queries the response was YES. [2024-06-14 12:21:40,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7239 conditions, 1246 events. 629/1246 cut-off events. For 125409/125409 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7539 event pairs, 97 based on Foata normal form. 2/1247 useless extension candidates. Maximal degree in co-relation 7112. Up to 981 conditions per place. [2024-06-14 12:21:40,426 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 81 changer transitions 0/291 dead transitions. [2024-06-14 12:21:40,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 291 transitions, 2822 flow [2024-06-14 12:21:40,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:21:40,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:21:40,427 INFO L175 Difference]: Start difference. First operand has 332 places, 279 transitions, 2194 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:21:40,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 291 transitions, 2822 flow [2024-06-14 12:21:40,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 291 transitions, 2722 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:21:40,885 INFO L231 Difference]: Finished difference. Result has 328 places, 280 transitions, 2290 flow [2024-06-14 12:21:40,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2290, PETRI_PLACES=328, PETRI_TRANSITIONS=280} [2024-06-14 12:21:40,885 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-14 12:21:40,885 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 280 transitions, 2290 flow [2024-06-14 12:21:40,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:40,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:40,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:40,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:21:40,886 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)] === [2024-06-14 12:21:40,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:40,886 INFO L85 PathProgramCache]: Analyzing trace with hash 11309226, now seen corresponding path program 17 times [2024-06-14 12:21:40,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:40,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603815905] [2024-06-14 12:21:40,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:40,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:41,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603815905] [2024-06-14 12:21:41,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603815905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:41,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:41,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102679743] [2024-06-14 12:21:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:41,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:42,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:42,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 280 transitions, 2290 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:42,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:42,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:42,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:42,517 INFO L124 PetriNetUnfolderBase]: 633/1255 cut-off events. [2024-06-14 12:21:42,517 INFO L125 PetriNetUnfolderBase]: For 123618/123618 co-relation queries the response was YES. [2024-06-14 12:21:42,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7348 conditions, 1255 events. 633/1255 cut-off events. For 123618/123618 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7608 event pairs, 98 based on Foata normal form. 2/1256 useless extension candidates. Maximal degree in co-relation 7222. Up to 927 conditions per place. [2024-06-14 12:21:42,525 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 96 changer transitions 0/293 dead transitions. [2024-06-14 12:21:42,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 293 transitions, 2926 flow [2024-06-14 12:21:42,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:42,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:21:42,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:21:42,526 INFO L175 Difference]: Start difference. First operand has 328 places, 280 transitions, 2290 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:21:42,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 293 transitions, 2926 flow [2024-06-14 12:21:43,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 293 transitions, 2740 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:43,005 INFO L231 Difference]: Finished difference. Result has 330 places, 281 transitions, 2332 flow [2024-06-14 12:21:43,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2332, PETRI_PLACES=330, PETRI_TRANSITIONS=281} [2024-06-14 12:21:43,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-14 12:21:43,006 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 281 transitions, 2332 flow [2024-06-14 12:21:43,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:43,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:43,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:43,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 12:21:43,006 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)] === [2024-06-14 12:21:43,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:43,007 INFO L85 PathProgramCache]: Analyzing trace with hash 5802696, now seen corresponding path program 18 times [2024-06-14 12:21:43,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:43,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721948772] [2024-06-14 12:21:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:43,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:44,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721948772] [2024-06-14 12:21:44,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721948772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:44,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:44,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:44,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567380767] [2024-06-14 12:21:44,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:44,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:44,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:44,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:44,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:44,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:44,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 281 transitions, 2332 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:44,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:44,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:44,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:44,564 INFO L124 PetriNetUnfolderBase]: 637/1263 cut-off events. [2024-06-14 12:21:44,564 INFO L125 PetriNetUnfolderBase]: For 126118/126118 co-relation queries the response was YES. [2024-06-14 12:21:44,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7440 conditions, 1263 events. 637/1263 cut-off events. For 126118/126118 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7673 event pairs, 98 based on Foata normal form. 2/1264 useless extension candidates. Maximal degree in co-relation 7313. Up to 913 conditions per place. [2024-06-14 12:21:44,575 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 195 selfloop transitions, 97 changer transitions 0/295 dead transitions. [2024-06-14 12:21:44,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 295 transitions, 2976 flow [2024-06-14 12:21:44,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:21:44,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 12:21:44,576 INFO L175 Difference]: Start difference. First operand has 330 places, 281 transitions, 2332 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:21:44,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 295 transitions, 2976 flow [2024-06-14 12:21:45,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 295 transitions, 2758 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:45,080 INFO L231 Difference]: Finished difference. Result has 332 places, 282 transitions, 2346 flow [2024-06-14 12:21:45,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2346, PETRI_PLACES=332, PETRI_TRANSITIONS=282} [2024-06-14 12:21:45,080 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-14 12:21:45,080 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 282 transitions, 2346 flow [2024-06-14 12:21:45,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:45,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:45,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:45,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 12:21:45,081 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)] === [2024-06-14 12:21:45,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:45,081 INFO L85 PathProgramCache]: Analyzing trace with hash -136300374, now seen corresponding path program 19 times [2024-06-14 12:21:45,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:45,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919736349] [2024-06-14 12:21:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:45,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:46,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:46,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919736349] [2024-06-14 12:21:46,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919736349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:46,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:46,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:46,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635704772] [2024-06-14 12:21:46,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:46,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:46,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:46,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:46,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:46,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:46,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 282 transitions, 2346 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:46,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:46,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:46,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:46,573 INFO L124 PetriNetUnfolderBase]: 641/1271 cut-off events. [2024-06-14 12:21:46,573 INFO L125 PetriNetUnfolderBase]: For 128750/128750 co-relation queries the response was YES. [2024-06-14 12:21:46,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7505 conditions, 1271 events. 641/1271 cut-off events. For 128750/128750 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7723 event pairs, 95 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 7377. Up to 828 conditions per place. [2024-06-14 12:21:46,584 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 85 changer transitions 0/298 dead transitions. [2024-06-14 12:21:46,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 298 transitions, 3218 flow [2024-06-14 12:21:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:21:46,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 12:21:46,585 INFO L175 Difference]: Start difference. First operand has 332 places, 282 transitions, 2346 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:21:46,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 298 transitions, 3218 flow [2024-06-14 12:21:47,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 298 transitions, 2996 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:47,103 INFO L231 Difference]: Finished difference. Result has 334 places, 283 transitions, 2332 flow [2024-06-14 12:21:47,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2332, PETRI_PLACES=334, PETRI_TRANSITIONS=283} [2024-06-14 12:21:47,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-14 12:21:47,104 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 283 transitions, 2332 flow [2024-06-14 12:21:47,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:47,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:47,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:47,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 12:21:47,104 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)] === [2024-06-14 12:21:47,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:47,104 INFO L85 PathProgramCache]: Analyzing trace with hash 864232310, now seen corresponding path program 20 times [2024-06-14 12:21:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:47,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143248252] [2024-06-14 12:21:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:47,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:48,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:48,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143248252] [2024-06-14 12:21:48,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143248252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:48,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:48,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:48,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240240861] [2024-06-14 12:21:48,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:48,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:48,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:48,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:48,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 283 transitions, 2332 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:48,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:48,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:48,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:48,776 INFO L124 PetriNetUnfolderBase]: 645/1279 cut-off events. [2024-06-14 12:21:48,776 INFO L125 PetriNetUnfolderBase]: For 131271/131271 co-relation queries the response was YES. [2024-06-14 12:21:48,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7541 conditions, 1279 events. 645/1279 cut-off events. For 131271/131271 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7793 event pairs, 101 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 7412. Up to 1013 conditions per place. [2024-06-14 12:21:48,786 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 75 changer transitions 0/295 dead transitions. [2024-06-14 12:21:48,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 295 transitions, 2976 flow [2024-06-14 12:21:48,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:48,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:21:48,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:21:48,787 INFO L175 Difference]: Start difference. First operand has 334 places, 283 transitions, 2332 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:21:48,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 295 transitions, 2976 flow [2024-06-14 12:21:49,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 295 transitions, 2725 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-14 12:21:49,293 INFO L231 Difference]: Finished difference. Result has 334 places, 284 transitions, 2273 flow [2024-06-14 12:21:49,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2273, PETRI_PLACES=334, PETRI_TRANSITIONS=284} [2024-06-14 12:21:49,294 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-14 12:21:49,294 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 284 transitions, 2273 flow [2024-06-14 12:21:49,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:49,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:49,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:49,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 12:21:49,294 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)] === [2024-06-14 12:21:49,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1070885750, now seen corresponding path program 21 times [2024-06-14 12:21:49,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:49,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679165606] [2024-06-14 12:21:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:49,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:50,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:50,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679165606] [2024-06-14 12:21:50,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679165606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:50,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:50,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:50,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309261026] [2024-06-14 12:21:50,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:50,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:50,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:50,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:50,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:50,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:50,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 284 transitions, 2273 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:50,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:50,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:50,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:50,754 INFO L124 PetriNetUnfolderBase]: 649/1287 cut-off events. [2024-06-14 12:21:50,754 INFO L125 PetriNetUnfolderBase]: For 133225/133225 co-relation queries the response was YES. [2024-06-14 12:21:50,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7392 conditions, 1287 events. 649/1287 cut-off events. For 133225/133225 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7854 event pairs, 101 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 7265. Up to 1021 conditions per place. [2024-06-14 12:21:50,765 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 215 selfloop transitions, 78 changer transitions 0/296 dead transitions. [2024-06-14 12:21:50,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 296 transitions, 2912 flow [2024-06-14 12:21:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:21:50,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:21:50,766 INFO L175 Difference]: Start difference. First operand has 334 places, 284 transitions, 2273 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:21:50,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 296 transitions, 2912 flow [2024-06-14 12:21:51,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 296 transitions, 2679 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-14 12:21:51,265 INFO L231 Difference]: Finished difference. Result has 335 places, 285 transitions, 2231 flow [2024-06-14 12:21:51,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2231, PETRI_PLACES=335, PETRI_TRANSITIONS=285} [2024-06-14 12:21:51,266 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-14 12:21:51,266 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 285 transitions, 2231 flow [2024-06-14 12:21:51,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:51,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:51,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:51,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 12:21:51,266 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)] === [2024-06-14 12:21:51,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:51,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1807454822, now seen corresponding path program 22 times [2024-06-14 12:21:51,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:51,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23752408] [2024-06-14 12:21:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:51,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:52,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:52,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23752408] [2024-06-14 12:21:52,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23752408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:52,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:52,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:52,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871698714] [2024-06-14 12:21:52,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:52,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:52,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:52,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:52,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:52,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:52,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 285 transitions, 2231 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:52,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:52,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:52,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:52,865 INFO L124 PetriNetUnfolderBase]: 653/1295 cut-off events. [2024-06-14 12:21:52,865 INFO L125 PetriNetUnfolderBase]: For 135420/135420 co-relation queries the response was YES. [2024-06-14 12:21:52,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7324 conditions, 1295 events. 653/1295 cut-off events. For 135420/135420 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7932 event pairs, 103 based on Foata normal form. 2/1296 useless extension candidates. Maximal degree in co-relation 7197. Up to 1029 conditions per place. [2024-06-14 12:21:52,877 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 205 selfloop transitions, 89 changer transitions 0/297 dead transitions. [2024-06-14 12:21:52,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 297 transitions, 2874 flow [2024-06-14 12:21:52,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:52,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:52,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:21:52,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:21:52,878 INFO L175 Difference]: Start difference. First operand has 335 places, 285 transitions, 2231 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:21:52,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 297 transitions, 2874 flow [2024-06-14 12:21:53,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 297 transitions, 2694 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:53,406 INFO L231 Difference]: Finished difference. Result has 337 places, 286 transitions, 2266 flow [2024-06-14 12:21:53,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2266, PETRI_PLACES=337, PETRI_TRANSITIONS=286} [2024-06-14 12:21:53,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-14 12:21:53,406 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 286 transitions, 2266 flow [2024-06-14 12:21:53,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:53,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:53,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:53,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 12:21:53,407 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)] === [2024-06-14 12:21:53,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:53,407 INFO L85 PathProgramCache]: Analyzing trace with hash -229167878, now seen corresponding path program 23 times [2024-06-14 12:21:53,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:53,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805996785] [2024-06-14 12:21:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:53,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:54,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805996785] [2024-06-14 12:21:54,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805996785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:54,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:54,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:54,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172524897] [2024-06-14 12:21:54,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:54,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:54,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:54,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:54,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:54,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 286 transitions, 2266 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:54,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:54,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:54,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:55,025 INFO L124 PetriNetUnfolderBase]: 657/1303 cut-off events. [2024-06-14 12:21:55,025 INFO L125 PetriNetUnfolderBase]: For 137981/137981 co-relation queries the response was YES. [2024-06-14 12:21:55,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7403 conditions, 1303 events. 657/1303 cut-off events. For 137981/137981 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8007 event pairs, 101 based on Foata normal form. 2/1304 useless extension candidates. Maximal degree in co-relation 7275. Up to 1023 conditions per place. [2024-06-14 12:21:55,035 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 220 selfloop transitions, 76 changer transitions 0/299 dead transitions. [2024-06-14 12:21:55,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 299 transitions, 2917 flow [2024-06-14 12:21:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:21:55,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 12:21:55,037 INFO L175 Difference]: Start difference. First operand has 337 places, 286 transitions, 2266 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:21:55,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 299 transitions, 2917 flow [2024-06-14 12:21:55,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 299 transitions, 2713 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:55,535 INFO L231 Difference]: Finished difference. Result has 339 places, 287 transitions, 2253 flow [2024-06-14 12:21:55,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2062, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2253, PETRI_PLACES=339, PETRI_TRANSITIONS=287} [2024-06-14 12:21:55,536 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-14 12:21:55,536 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 287 transitions, 2253 flow [2024-06-14 12:21:55,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:55,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:55,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:55,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 12:21:55,537 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)] === [2024-06-14 12:21:55,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:55,537 INFO L85 PathProgramCache]: Analyzing trace with hash -35021078, now seen corresponding path program 24 times [2024-06-14 12:21:55,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:55,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843940722] [2024-06-14 12:21:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:55,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:56,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:56,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843940722] [2024-06-14 12:21:56,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843940722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:56,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:56,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:56,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330976647] [2024-06-14 12:21:56,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:56,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:56,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:56,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:56,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:56,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:56,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 287 transitions, 2253 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:56,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:56,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:56,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:57,283 INFO L124 PetriNetUnfolderBase]: 661/1311 cut-off events. [2024-06-14 12:21:57,283 INFO L125 PetriNetUnfolderBase]: For 140588/140588 co-relation queries the response was YES. [2024-06-14 12:21:57,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7438 conditions, 1311 events. 661/1311 cut-off events. For 140588/140588 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8057 event pairs, 105 based on Foata normal form. 2/1312 useless extension candidates. Maximal degree in co-relation 7309. Up to 1045 conditions per place. [2024-06-14 12:21:57,294 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 78 changer transitions 0/299 dead transitions. [2024-06-14 12:21:57,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 299 transitions, 2904 flow [2024-06-14 12:21:57,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:21:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:21:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:21:57,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:21:57,295 INFO L175 Difference]: Start difference. First operand has 339 places, 287 transitions, 2253 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:21:57,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 299 transitions, 2904 flow [2024-06-14 12:21:57,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 299 transitions, 2724 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:21:57,807 INFO L231 Difference]: Finished difference. Result has 342 places, 288 transitions, 2270 flow [2024-06-14 12:21:57,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2270, PETRI_PLACES=342, PETRI_TRANSITIONS=288} [2024-06-14 12:21:57,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-14 12:21:57,807 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 288 transitions, 2270 flow [2024-06-14 12:21:57,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:57,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:57,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:57,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 12:21:57,808 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)] === [2024-06-14 12:21:57,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:57,808 INFO L85 PathProgramCache]: Analyzing trace with hash -234674408, now seen corresponding path program 25 times [2024-06-14 12:21:57,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:57,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088816646] [2024-06-14 12:21:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:57,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:58,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:58,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088816646] [2024-06-14 12:21:58,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088816646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:58,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:58,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:21:58,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493676906] [2024-06-14 12:21:58,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:58,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:21:58,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:58,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:21:58,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:21:58,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:21:58,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 288 transitions, 2270 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:21:58,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:58,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:21:58,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:59,402 INFO L124 PetriNetUnfolderBase]: 672/1332 cut-off events. [2024-06-14 12:21:59,402 INFO L125 PetriNetUnfolderBase]: For 156640/156640 co-relation queries the response was YES. [2024-06-14 12:21:59,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7851 conditions, 1332 events. 672/1332 cut-off events. For 156640/156640 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8223 event pairs, 106 based on Foata normal form. 2/1333 useless extension candidates. Maximal degree in co-relation 7721. Up to 1001 conditions per place. [2024-06-14 12:21:59,410 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 80 changer transitions 0/304 dead transitions. [2024-06-14 12:21:59,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 304 transitions, 3204 flow [2024-06-14 12:21:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:21:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:21:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:21:59,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:21:59,411 INFO L175 Difference]: Start difference. First operand has 342 places, 288 transitions, 2270 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:21:59,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 304 transitions, 3204 flow [2024-06-14 12:22:00,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 304 transitions, 3018 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 12:22:00,003 INFO L231 Difference]: Finished difference. Result has 343 places, 290 transitions, 2324 flow [2024-06-14 12:22:00,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2324, PETRI_PLACES=343, PETRI_TRANSITIONS=290} [2024-06-14 12:22:00,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-14 12:22:00,003 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 290 transitions, 2324 flow [2024-06-14 12:22:00,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:00,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:00,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:00,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 12:22:00,004 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)] === [2024-06-14 12:22:00,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:00,005 INFO L85 PathProgramCache]: Analyzing trace with hash -35228468, now seen corresponding path program 26 times [2024-06-14 12:22:00,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:00,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940211792] [2024-06-14 12:22:00,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:00,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:01,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:01,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940211792] [2024-06-14 12:22:01,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940211792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:01,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:01,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:01,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3117814] [2024-06-14 12:22:01,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:01,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:01,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:01,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 290 transitions, 2324 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:01,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:01,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:01,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:01,630 INFO L124 PetriNetUnfolderBase]: 669/1327 cut-off events. [2024-06-14 12:22:01,631 INFO L125 PetriNetUnfolderBase]: For 145785/145785 co-relation queries the response was YES. [2024-06-14 12:22:01,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7568 conditions, 1327 events. 669/1327 cut-off events. For 145785/145785 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8197 event pairs, 107 based on Foata normal form. 2/1328 useless extension candidates. Maximal degree in co-relation 7437. Up to 1041 conditions per place. [2024-06-14 12:22:01,642 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 80 changer transitions 0/302 dead transitions. [2024-06-14 12:22:01,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 302 transitions, 2948 flow [2024-06-14 12:22:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:22:01,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-14 12:22:01,644 INFO L175 Difference]: Start difference. First operand has 343 places, 290 transitions, 2324 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:22:01,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 302 transitions, 2948 flow [2024-06-14 12:22:02,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 302 transitions, 2801 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-14 12:22:02,106 INFO L231 Difference]: Finished difference. Result has 348 places, 290 transitions, 2341 flow [2024-06-14 12:22:02,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2341, PETRI_PLACES=348, PETRI_TRANSITIONS=290} [2024-06-14 12:22:02,107 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-14 12:22:02,107 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 290 transitions, 2341 flow [2024-06-14 12:22:02,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:02,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:02,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:02,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 12:22:02,107 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)] === [2024-06-14 12:22:02,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1463011404, now seen corresponding path program 27 times [2024-06-14 12:22:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:02,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191707653] [2024-06-14 12:22:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:03,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:03,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191707653] [2024-06-14 12:22:03,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191707653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:03,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:03,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:03,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275699553] [2024-06-14 12:22:03,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:03,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:03,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:03,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:03,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:03,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:03,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 290 transitions, 2341 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:03,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:03,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:03,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:03,776 INFO L124 PetriNetUnfolderBase]: 680/1348 cut-off events. [2024-06-14 12:22:03,776 INFO L125 PetriNetUnfolderBase]: For 161888/161888 co-relation queries the response was YES. [2024-06-14 12:22:03,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8064 conditions, 1348 events. 680/1348 cut-off events. For 161888/161888 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8343 event pairs, 110 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 7931. Up to 1065 conditions per place. [2024-06-14 12:22:03,787 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 83 changer transitions 0/305 dead transitions. [2024-06-14 12:22:03,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 305 transitions, 3283 flow [2024-06-14 12:22:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:22:03,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 12:22:03,788 INFO L175 Difference]: Start difference. First operand has 348 places, 290 transitions, 2341 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:22:03,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 305 transitions, 3283 flow [2024-06-14 12:22:04,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 305 transitions, 3105 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:04,303 INFO L231 Difference]: Finished difference. Result has 348 places, 292 transitions, 2413 flow [2024-06-14 12:22:04,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2413, PETRI_PLACES=348, PETRI_TRANSITIONS=292} [2024-06-14 12:22:04,303 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-14 12:22:04,303 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 292 transitions, 2413 flow [2024-06-14 12:22:04,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:04,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:04,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:04,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 12:22:04,304 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)] === [2024-06-14 12:22:04,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:04,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2016786318, now seen corresponding path program 28 times [2024-06-14 12:22:04,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:04,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037628535] [2024-06-14 12:22:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:04,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:05,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:05,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037628535] [2024-06-14 12:22:05,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037628535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:05,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:05,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:05,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917663979] [2024-06-14 12:22:05,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:05,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:05,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:05,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:05,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:05,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:05,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 292 transitions, 2413 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:05,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:05,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:05,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:06,005 INFO L124 PetriNetUnfolderBase]: 677/1343 cut-off events. [2024-06-14 12:22:06,006 INFO L125 PetriNetUnfolderBase]: For 151048/151048 co-relation queries the response was YES. [2024-06-14 12:22:06,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7799 conditions, 1343 events. 677/1343 cut-off events. For 151048/151048 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8315 event pairs, 111 based on Foata normal form. 2/1344 useless extension candidates. Maximal degree in co-relation 7665. Up to 1077 conditions per place. [2024-06-14 12:22:06,022 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 82 changer transitions 0/303 dead transitions. [2024-06-14 12:22:06,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 303 transitions, 3037 flow [2024-06-14 12:22:06,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:06,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:22:06,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:22:06,024 INFO L175 Difference]: Start difference. First operand has 348 places, 292 transitions, 2413 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:22:06,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 303 transitions, 3037 flow [2024-06-14 12:22:06,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 303 transitions, 2864 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-14 12:22:06,772 INFO L231 Difference]: Finished difference. Result has 352 places, 292 transitions, 2408 flow [2024-06-14 12:22:06,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2408, PETRI_PLACES=352, PETRI_TRANSITIONS=292} [2024-06-14 12:22:06,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-14 12:22:06,772 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 292 transitions, 2408 flow [2024-06-14 12:22:06,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:06,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:06,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:06,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 12:22:06,773 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)] === [2024-06-14 12:22:06,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:06,773 INFO L85 PathProgramCache]: Analyzing trace with hash -76052746, now seen corresponding path program 29 times [2024-06-14 12:22:06,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:06,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105196318] [2024-06-14 12:22:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:07,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105196318] [2024-06-14 12:22:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105196318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:07,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:07,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:07,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120562808] [2024-06-14 12:22:07,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:07,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:07,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:07,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:07,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:07,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:07,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 292 transitions, 2408 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:07,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:07,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:07,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:08,395 INFO L124 PetriNetUnfolderBase]: 681/1351 cut-off events. [2024-06-14 12:22:08,395 INFO L125 PetriNetUnfolderBase]: For 152898/152898 co-relation queries the response was YES. [2024-06-14 12:22:08,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7897 conditions, 1351 events. 681/1351 cut-off events. For 152898/152898 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8385 event pairs, 108 based on Foata normal form. 2/1352 useless extension candidates. Maximal degree in co-relation 7761. Up to 960 conditions per place. [2024-06-14 12:22:08,408 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 201 selfloop transitions, 103 changer transitions 0/307 dead transitions. [2024-06-14 12:22:08,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 307 transitions, 3323 flow [2024-06-14 12:22:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:08,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:22:08,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:22:08,409 INFO L175 Difference]: Start difference. First operand has 352 places, 292 transitions, 2408 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:22:08,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 307 transitions, 3323 flow [2024-06-14 12:22:08,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 307 transitions, 3157 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:22:08,956 INFO L231 Difference]: Finished difference. Result has 353 places, 293 transitions, 2493 flow [2024-06-14 12:22:08,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2493, PETRI_PLACES=353, PETRI_TRANSITIONS=293} [2024-06-14 12:22:08,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-14 12:22:08,957 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 293 transitions, 2493 flow [2024-06-14 12:22:08,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:08,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:08,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:08,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 12:22:08,957 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)] === [2024-06-14 12:22:08,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:08,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1664308044, now seen corresponding path program 30 times [2024-06-14 12:22:08,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:08,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588281125] [2024-06-14 12:22:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:08,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:10,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:10,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588281125] [2024-06-14 12:22:10,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588281125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:10,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:10,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:10,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734140981] [2024-06-14 12:22:10,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:10,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:10,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:10,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:10,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:10,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:10,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 293 transitions, 2493 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:10,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:10,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:10,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:10,588 INFO L124 PetriNetUnfolderBase]: 685/1359 cut-off events. [2024-06-14 12:22:10,588 INFO L125 PetriNetUnfolderBase]: For 156486/156486 co-relation queries the response was YES. [2024-06-14 12:22:10,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8073 conditions, 1359 events. 685/1359 cut-off events. For 156486/156486 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8445 event pairs, 111 based on Foata normal form. 2/1360 useless extension candidates. Maximal degree in co-relation 7936. Up to 1093 conditions per place. [2024-06-14 12:22:10,600 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 222 selfloop transitions, 80 changer transitions 0/305 dead transitions. [2024-06-14 12:22:10,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 305 transitions, 3164 flow [2024-06-14 12:22:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:22:10,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:22:10,601 INFO L175 Difference]: Start difference. First operand has 353 places, 293 transitions, 2493 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:22:10,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 305 transitions, 3164 flow [2024-06-14 12:22:11,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 305 transitions, 2837 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-14 12:22:11,220 INFO L231 Difference]: Finished difference. Result has 354 places, 294 transitions, 2375 flow [2024-06-14 12:22:11,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2375, PETRI_PLACES=354, PETRI_TRANSITIONS=294} [2024-06-14 12:22:11,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-14 12:22:11,220 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 294 transitions, 2375 flow [2024-06-14 12:22:11,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:11,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:11,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:11,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 12:22:11,221 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)] === [2024-06-14 12:22:11,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:11,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1539052104, now seen corresponding path program 31 times [2024-06-14 12:22:11,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:11,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820231061] [2024-06-14 12:22:11,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:11,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:12,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:12,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820231061] [2024-06-14 12:22:12,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820231061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:12,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:12,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:12,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888891046] [2024-06-14 12:22:12,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:12,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:12,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:12,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:12,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:12,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:12,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 294 transitions, 2375 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:12,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:12,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:12,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:12,846 INFO L124 PetriNetUnfolderBase]: 689/1367 cut-off events. [2024-06-14 12:22:12,846 INFO L125 PetriNetUnfolderBase]: For 158717/158717 co-relation queries the response was YES. [2024-06-14 12:22:12,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7898 conditions, 1367 events. 689/1367 cut-off events. For 158717/158717 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8508 event pairs, 113 based on Foata normal form. 2/1368 useless extension candidates. Maximal degree in co-relation 7761. Up to 1101 conditions per place. [2024-06-14 12:22:12,859 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 79 changer transitions 0/306 dead transitions. [2024-06-14 12:22:12,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 306 transitions, 3046 flow [2024-06-14 12:22:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:12,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:22:12,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:22:12,860 INFO L175 Difference]: Start difference. First operand has 354 places, 294 transitions, 2375 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:22:12,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 306 transitions, 3046 flow [2024-06-14 12:22:13,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 306 transitions, 2852 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 12:22:13,444 INFO L231 Difference]: Finished difference. Result has 356 places, 295 transitions, 2386 flow [2024-06-14 12:22:13,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2386, PETRI_PLACES=356, PETRI_TRANSITIONS=295} [2024-06-14 12:22:13,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-14 12:22:13,445 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 295 transitions, 2386 flow [2024-06-14 12:22:13,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:13,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:13,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:13,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 12:22:13,445 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)] === [2024-06-14 12:22:13,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:13,446 INFO L85 PathProgramCache]: Analyzing trace with hash 123393194, now seen corresponding path program 32 times [2024-06-14 12:22:13,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:13,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062048368] [2024-06-14 12:22:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:13,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:14,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:14,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062048368] [2024-06-14 12:22:14,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062048368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:14,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:14,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:14,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238618426] [2024-06-14 12:22:14,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:14,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:14,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:14,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:14,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:14,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:14,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 295 transitions, 2386 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:14,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:14,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:14,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:15,045 INFO L124 PetriNetUnfolderBase]: 693/1375 cut-off events. [2024-06-14 12:22:15,045 INFO L125 PetriNetUnfolderBase]: For 161485/161485 co-relation queries the response was YES. [2024-06-14 12:22:15,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7953 conditions, 1375 events. 693/1375 cut-off events. For 161485/161485 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8570 event pairs, 113 based on Foata normal form. 2/1376 useless extension candidates. Maximal degree in co-relation 7815. Up to 1089 conditions per place. [2024-06-14 12:22:15,058 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 81 changer transitions 0/308 dead transitions. [2024-06-14 12:22:15,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 308 transitions, 3065 flow [2024-06-14 12:22:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:22:15,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 12:22:15,060 INFO L175 Difference]: Start difference. First operand has 356 places, 295 transitions, 2386 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:22:15,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 308 transitions, 3065 flow [2024-06-14 12:22:15,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 308 transitions, 2871 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 12:22:15,687 INFO L231 Difference]: Finished difference. Result has 358 places, 296 transitions, 2403 flow [2024-06-14 12:22:15,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2403, PETRI_PLACES=358, PETRI_TRANSITIONS=296} [2024-06-14 12:22:15,687 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-14 12:22:15,687 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 296 transitions, 2403 flow [2024-06-14 12:22:15,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:15,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:15,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:15,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 12:22:15,688 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)] === [2024-06-14 12:22:15,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:15,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1807247432, now seen corresponding path program 33 times [2024-06-14 12:22:15,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:15,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331327727] [2024-06-14 12:22:15,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:15,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:16,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:16,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331327727] [2024-06-14 12:22:16,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331327727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:16,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:16,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:16,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524872959] [2024-06-14 12:22:16,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:16,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:16,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:16,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:16,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:16,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:16,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 296 transitions, 2403 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:16,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:16,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:16,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:17,323 INFO L124 PetriNetUnfolderBase]: 697/1383 cut-off events. [2024-06-14 12:22:17,323 INFO L125 PetriNetUnfolderBase]: For 164457/164457 co-relation queries the response was YES. [2024-06-14 12:22:17,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8020 conditions, 1383 events. 697/1383 cut-off events. For 164457/164457 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8637 event pairs, 113 based on Foata normal form. 2/1384 useless extension candidates. Maximal degree in co-relation 7881. Up to 1092 conditions per place. [2024-06-14 12:22:17,335 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 91 changer transitions 0/310 dead transitions. [2024-06-14 12:22:17,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 310 transitions, 3334 flow [2024-06-14 12:22:17,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:17,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:17,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:22:17,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:22:17,336 INFO L175 Difference]: Start difference. First operand has 358 places, 296 transitions, 2403 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:22:17,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 310 transitions, 3334 flow [2024-06-14 12:22:17,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 310 transitions, 3134 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 12:22:17,861 INFO L231 Difference]: Finished difference. Result has 360 places, 297 transitions, 2434 flow [2024-06-14 12:22:17,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2434, PETRI_PLACES=360, PETRI_TRANSITIONS=297} [2024-06-14 12:22:17,861 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-14 12:22:17,862 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 297 transitions, 2434 flow [2024-06-14 12:22:17,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:17,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:17,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:17,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 12:22:17,862 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)] === [2024-06-14 12:22:17,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:17,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1814604662, now seen corresponding path program 34 times [2024-06-14 12:22:17,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:17,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810295768] [2024-06-14 12:22:17,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:17,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:18,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810295768] [2024-06-14 12:22:18,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810295768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:18,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:18,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:18,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58355059] [2024-06-14 12:22:18,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:18,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:18,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:18,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 297 transitions, 2434 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:18,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:18,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:18,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:19,284 INFO L124 PetriNetUnfolderBase]: 701/1391 cut-off events. [2024-06-14 12:22:19,285 INFO L125 PetriNetUnfolderBase]: For 167363/167363 co-relation queries the response was YES. [2024-06-14 12:22:19,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8095 conditions, 1391 events. 701/1391 cut-off events. For 167363/167363 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8713 event pairs, 115 based on Foata normal form. 2/1392 useless extension candidates. Maximal degree in co-relation 7955. Up to 1125 conditions per place. [2024-06-14 12:22:19,297 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 88 changer transitions 0/309 dead transitions. [2024-06-14 12:22:19,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 309 transitions, 3117 flow [2024-06-14 12:22:19,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:22:19,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:22:19,298 INFO L175 Difference]: Start difference. First operand has 360 places, 297 transitions, 2434 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:22:19,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 309 transitions, 3117 flow [2024-06-14 12:22:19,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 309 transitions, 2818 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-14 12:22:19,954 INFO L231 Difference]: Finished difference. Result has 361 places, 298 transitions, 2364 flow [2024-06-14 12:22:19,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2364, PETRI_PLACES=361, PETRI_TRANSITIONS=298} [2024-06-14 12:22:19,954 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-14 12:22:19,955 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 298 transitions, 2364 flow [2024-06-14 12:22:19,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:19,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:19,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:19,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 12:22:19,955 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)] === [2024-06-14 12:22:19,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:19,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2062766040, now seen corresponding path program 35 times [2024-06-14 12:22:19,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:19,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955306715] [2024-06-14 12:22:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:20,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955306715] [2024-06-14 12:22:20,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955306715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:20,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:20,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:22:20,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196106600] [2024-06-14 12:22:20,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:20,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:22:20,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:20,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:22:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:22:21,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:21,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 298 transitions, 2364 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:21,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:21,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:21,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:21,460 INFO L124 PetriNetUnfolderBase]: 698/1384 cut-off events. [2024-06-14 12:22:21,460 INFO L125 PetriNetUnfolderBase]: For 153610/153610 co-relation queries the response was YES. [2024-06-14 12:22:21,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7581 conditions, 1384 events. 698/1384 cut-off events. For 153610/153610 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8636 event pairs, 166 based on Foata normal form. 2/1385 useless extension candidates. Maximal degree in co-relation 7441. Up to 1296 conditions per place. [2024-06-14 12:22:21,473 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 288 selfloop transitions, 18 changer transitions 0/309 dead transitions. [2024-06-14 12:22:21,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 309 transitions, 3000 flow [2024-06-14 12:22:21,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:21,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:21,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 12:22:21,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 12:22:21,474 INFO L175 Difference]: Start difference. First operand has 361 places, 298 transitions, 2364 flow. Second operand 11 states and 125 transitions. [2024-06-14 12:22:21,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 309 transitions, 3000 flow [2024-06-14 12:22:22,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 309 transitions, 2748 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-14 12:22:22,075 INFO L231 Difference]: Finished difference. Result has 363 places, 298 transitions, 2152 flow [2024-06-14 12:22:22,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2152, PETRI_PLACES=363, PETRI_TRANSITIONS=298} [2024-06-14 12:22:22,076 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-14 12:22:22,076 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 298 transitions, 2152 flow [2024-06-14 12:22:22,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:22,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:22,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:22,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 12:22:22,076 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)] === [2024-06-14 12:22:22,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:22,077 INFO L85 PathProgramCache]: Analyzing trace with hash 869804436, now seen corresponding path program 8 times [2024-06-14 12:22:22,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:22,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290898894] [2024-06-14 12:22:22,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:22,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:23,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:23,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290898894] [2024-06-14 12:22:23,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290898894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:23,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:23,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:23,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596751361] [2024-06-14 12:22:23,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:23,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:23,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:23,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:23,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:23,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:23,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 298 transitions, 2152 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:23,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:23,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:23,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:23,961 INFO L124 PetriNetUnfolderBase]: 710/1413 cut-off events. [2024-06-14 12:22:23,961 INFO L125 PetriNetUnfolderBase]: For 201072/201072 co-relation queries the response was YES. [2024-06-14 12:22:23,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7534 conditions, 1413 events. 710/1413 cut-off events. For 201072/201072 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8903 event pairs, 118 based on Foata normal form. 8/1420 useless extension candidates. Maximal degree in co-relation 7393. Up to 1119 conditions per place. [2024-06-14 12:22:23,973 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 73 changer transitions 9/313 dead transitions. [2024-06-14 12:22:23,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 313 transitions, 2888 flow [2024-06-14 12:22:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:23,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:23,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:22:23,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:22:23,975 INFO L175 Difference]: Start difference. First operand has 363 places, 298 transitions, 2152 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:22:23,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 313 transitions, 2888 flow [2024-06-14 12:22:24,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 313 transitions, 2842 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:22:24,690 INFO L231 Difference]: Finished difference. Result has 365 places, 295 transitions, 2237 flow [2024-06-14 12:22:24,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2237, PETRI_PLACES=365, PETRI_TRANSITIONS=295} [2024-06-14 12:22:24,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-14 12:22:24,691 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 295 transitions, 2237 flow [2024-06-14 12:22:24,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:24,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:24,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:24,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 12:22:24,692 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)] === [2024-06-14 12:22:24,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:24,692 INFO L85 PathProgramCache]: Analyzing trace with hash 11524552, now seen corresponding path program 9 times [2024-06-14 12:22:24,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:24,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840626007] [2024-06-14 12:22:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:24,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:25,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:25,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840626007] [2024-06-14 12:22:25,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840626007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:25,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:25,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:25,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073598823] [2024-06-14 12:22:25,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:25,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:25,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:25,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:26,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:26,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 295 transitions, 2237 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:26,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:26,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:26,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:26,426 INFO L124 PetriNetUnfolderBase]: 705/1407 cut-off events. [2024-06-14 12:22:26,426 INFO L125 PetriNetUnfolderBase]: For 202573/202573 co-relation queries the response was YES. [2024-06-14 12:22:26,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7621 conditions, 1407 events. 705/1407 cut-off events. For 202573/202573 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8843 event pairs, 120 based on Foata normal form. 8/1414 useless extension candidates. Maximal degree in co-relation 7479. Up to 1102 conditions per place. [2024-06-14 12:22:26,439 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 76 changer transitions 13/310 dead transitions. [2024-06-14 12:22:26,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 310 transitions, 2967 flow [2024-06-14 12:22:26,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:26,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:22:26,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:22:26,440 INFO L175 Difference]: Start difference. First operand has 365 places, 295 transitions, 2237 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:22:26,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 310 transitions, 2967 flow [2024-06-14 12:22:27,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 310 transitions, 2817 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:27,077 INFO L231 Difference]: Finished difference. Result has 363 places, 289 transitions, 2207 flow [2024-06-14 12:22:27,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2207, PETRI_PLACES=363, PETRI_TRANSITIONS=289} [2024-06-14 12:22:27,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-14 12:22:27,077 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 289 transitions, 2207 flow [2024-06-14 12:22:27,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:27,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:27,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:27,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 12:22:27,078 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)] === [2024-06-14 12:22:27,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:27,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1070893686, now seen corresponding path program 10 times [2024-06-14 12:22:27,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786123214] [2024-06-14 12:22:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:27,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:28,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:28,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786123214] [2024-06-14 12:22:28,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786123214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:28,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:28,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:28,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307082574] [2024-06-14 12:22:28,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:28,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:28,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:28,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:28,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:28,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:28,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 289 transitions, 2207 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:28,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:28,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:28,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:29,055 INFO L124 PetriNetUnfolderBase]: 693/1387 cut-off events. [2024-06-14 12:22:29,055 INFO L125 PetriNetUnfolderBase]: For 200662/200662 co-relation queries the response was YES. [2024-06-14 12:22:29,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7538 conditions, 1387 events. 693/1387 cut-off events. For 200662/200662 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8689 event pairs, 118 based on Foata normal form. 8/1394 useless extension candidates. Maximal degree in co-relation 7397. Up to 1085 conditions per place. [2024-06-14 12:22:29,072 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 70 changer transitions 13/304 dead transitions. [2024-06-14 12:22:29,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 304 transitions, 2925 flow [2024-06-14 12:22:29,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:29,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:22:29,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-14 12:22:29,074 INFO L175 Difference]: Start difference. First operand has 363 places, 289 transitions, 2207 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:22:29,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 304 transitions, 2925 flow [2024-06-14 12:22:29,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 304 transitions, 2759 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:29,699 INFO L231 Difference]: Finished difference. Result has 358 places, 283 transitions, 2155 flow [2024-06-14 12:22:29,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2155, PETRI_PLACES=358, PETRI_TRANSITIONS=283} [2024-06-14 12:22:29,699 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-14 12:22:29,699 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 283 transitions, 2155 flow [2024-06-14 12:22:29,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:29,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:29,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:29,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 12:22:29,700 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)] === [2024-06-14 12:22:29,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:29,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1063743846, now seen corresponding path program 11 times [2024-06-14 12:22:29,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:29,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987962685] [2024-06-14 12:22:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:29,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:30,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:30,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987962685] [2024-06-14 12:22:30,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987962685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:30,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:30,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041551496] [2024-06-14 12:22:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:30,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:30,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:31,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:31,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 283 transitions, 2155 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:31,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:31,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:31,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:31,549 INFO L124 PetriNetUnfolderBase]: 681/1365 cut-off events. [2024-06-14 12:22:31,549 INFO L125 PetriNetUnfolderBase]: For 194375/194375 co-relation queries the response was YES. [2024-06-14 12:22:31,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7386 conditions, 1365 events. 681/1365 cut-off events. For 194375/194375 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8540 event pairs, 118 based on Foata normal form. 8/1372 useless extension candidates. Maximal degree in co-relation 7247. Up to 1078 conditions per place. [2024-06-14 12:22:31,561 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 68 changer transitions 9/298 dead transitions. [2024-06-14 12:22:31,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 298 transitions, 2857 flow [2024-06-14 12:22:31,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:31,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:22:31,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:22:31,562 INFO L175 Difference]: Start difference. First operand has 358 places, 283 transitions, 2155 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:22:31,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 298 transitions, 2857 flow [2024-06-14 12:22:32,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 298 transitions, 2711 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:32,107 INFO L231 Difference]: Finished difference. Result has 353 places, 280 transitions, 2130 flow [2024-06-14 12:22:32,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2130, PETRI_PLACES=353, PETRI_TRANSITIONS=280} [2024-06-14 12:22:32,108 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-14 12:22:32,108 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 280 transitions, 2130 flow [2024-06-14 12:22:32,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:32,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:32,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:32,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 12:22:32,109 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)] === [2024-06-14 12:22:32,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:32,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1071153156, now seen corresponding path program 12 times [2024-06-14 12:22:32,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:32,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91647307] [2024-06-14 12:22:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:32,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:33,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:33,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91647307] [2024-06-14 12:22:33,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91647307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:33,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:33,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:33,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802956637] [2024-06-14 12:22:33,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:33,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:33,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:33,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:33,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:33,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:33,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 280 transitions, 2130 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:33,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:33,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:33,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:33,750 INFO L124 PetriNetUnfolderBase]: 676/1362 cut-off events. [2024-06-14 12:22:33,750 INFO L125 PetriNetUnfolderBase]: For 188175/188175 co-relation queries the response was YES. [2024-06-14 12:22:33,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7320 conditions, 1362 events. 676/1362 cut-off events. For 188175/188175 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8526 event pairs, 121 based on Foata normal form. 8/1369 useless extension candidates. Maximal degree in co-relation 7183. Up to 1020 conditions per place. [2024-06-14 12:22:33,761 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 84 changer transitions 9/295 dead transitions. [2024-06-14 12:22:33,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 295 transitions, 2826 flow [2024-06-14 12:22:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:33,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:33,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:22:33,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:22:33,762 INFO L175 Difference]: Start difference. First operand has 353 places, 280 transitions, 2130 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:22:33,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 295 transitions, 2826 flow [2024-06-14 12:22:34,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 295 transitions, 2678 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:34,364 INFO L231 Difference]: Finished difference. Result has 351 places, 277 transitions, 2141 flow [2024-06-14 12:22:34,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2141, PETRI_PLACES=351, PETRI_TRANSITIONS=277} [2024-06-14 12:22:34,364 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-14 12:22:34,364 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 277 transitions, 2141 flow [2024-06-14 12:22:34,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:34,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:34,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:34,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 12:22:34,365 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)] === [2024-06-14 12:22:34,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:34,365 INFO L85 PathProgramCache]: Analyzing trace with hash -875285036, now seen corresponding path program 13 times [2024-06-14 12:22:34,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:34,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350177768] [2024-06-14 12:22:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:34,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:35,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:35,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350177768] [2024-06-14 12:22:35,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350177768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:35,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:35,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:35,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303709760] [2024-06-14 12:22:35,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:35,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:35,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:35,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:35,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:35,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:35,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 277 transitions, 2141 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:35,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:35,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:35,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:36,106 INFO L124 PetriNetUnfolderBase]: 667/1345 cut-off events. [2024-06-14 12:22:36,107 INFO L125 PetriNetUnfolderBase]: For 168240/168240 co-relation queries the response was YES. [2024-06-14 12:22:36,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7194 conditions, 1345 events. 667/1345 cut-off events. For 168240/168240 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8403 event pairs, 115 based on Foata normal form. 6/1350 useless extension candidates. Maximal degree in co-relation 7058. Up to 1010 conditions per place. [2024-06-14 12:22:36,119 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 197 selfloop transitions, 81 changer transitions 11/292 dead transitions. [2024-06-14 12:22:36,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 292 transitions, 2795 flow [2024-06-14 12:22:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:22:36,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:22:36,120 INFO L175 Difference]: Start difference. First operand has 351 places, 277 transitions, 2141 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:22:36,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 292 transitions, 2795 flow [2024-06-14 12:22:36,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 292 transitions, 2623 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:36,700 INFO L231 Difference]: Finished difference. Result has 349 places, 273 transitions, 2111 flow [2024-06-14 12:22:36,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1969, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2111, PETRI_PLACES=349, PETRI_TRANSITIONS=273} [2024-06-14 12:22:36,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-14 12:22:36,700 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 273 transitions, 2111 flow [2024-06-14 12:22:36,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:36,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:36,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:36,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 12:22:36,701 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)] === [2024-06-14 12:22:36,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1807462758, now seen corresponding path program 14 times [2024-06-14 12:22:36,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:36,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861455908] [2024-06-14 12:22:36,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:36,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:37,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:37,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861455908] [2024-06-14 12:22:37,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861455908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:37,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:37,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778778553] [2024-06-14 12:22:37,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:37,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:37,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:37,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:38,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:38,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 273 transitions, 2111 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:38,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:38,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:38,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:38,486 INFO L124 PetriNetUnfolderBase]: 663/1333 cut-off events. [2024-06-14 12:22:38,486 INFO L125 PetriNetUnfolderBase]: For 182302/182302 co-relation queries the response was YES. [2024-06-14 12:22:38,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7193 conditions, 1333 events. 663/1333 cut-off events. For 182302/182302 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8301 event pairs, 118 based on Foata normal form. 8/1340 useless extension candidates. Maximal degree in co-relation 7058. Up to 1051 conditions per place. [2024-06-14 12:22:38,498 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 196 selfloop transitions, 80 changer transitions 9/288 dead transitions. [2024-06-14 12:22:38,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 288 transitions, 2789 flow [2024-06-14 12:22:38,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 12:22:38,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 12:22:38,499 INFO L175 Difference]: Start difference. First operand has 349 places, 273 transitions, 2111 flow. Second operand 12 states and 147 transitions. [2024-06-14 12:22:38,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 288 transitions, 2789 flow [2024-06-14 12:22:39,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 288 transitions, 2546 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-14 12:22:39,057 INFO L231 Difference]: Finished difference. Result has 343 places, 270 transitions, 2021 flow [2024-06-14 12:22:39,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2021, PETRI_PLACES=343, PETRI_TRANSITIONS=270} [2024-06-14 12:22:39,057 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-14 12:22:39,057 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 270 transitions, 2021 flow [2024-06-14 12:22:39,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:39,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:39,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:39,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 12:22:39,058 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)] === [2024-06-14 12:22:39,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:39,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1732983578, now seen corresponding path program 15 times [2024-06-14 12:22:39,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:39,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329452039] [2024-06-14 12:22:39,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:39,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:40,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:40,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329452039] [2024-06-14 12:22:40,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329452039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:40,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:40,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:40,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89434895] [2024-06-14 12:22:40,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:40,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:40,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:40,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:40,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:40,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 270 transitions, 2021 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:40,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:40,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:40,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:40,991 INFO L124 PetriNetUnfolderBase]: 658/1326 cut-off events. [2024-06-14 12:22:40,991 INFO L125 PetriNetUnfolderBase]: For 175915/175915 co-relation queries the response was YES. [2024-06-14 12:22:40,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6952 conditions, 1326 events. 658/1326 cut-off events. For 175915/175915 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8278 event pairs, 118 based on Foata normal form. 8/1333 useless extension candidates. Maximal degree in co-relation 6820. Up to 1044 conditions per place. [2024-06-14 12:22:41,000 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 201 selfloop transitions, 72 changer transitions 9/285 dead transitions. [2024-06-14 12:22:41,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 285 transitions, 2687 flow [2024-06-14 12:22:41,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:41,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:22:41,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:22:41,001 INFO L175 Difference]: Start difference. First operand has 343 places, 270 transitions, 2021 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:22:41,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 285 transitions, 2687 flow [2024-06-14 12:22:41,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 285 transitions, 2515 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:41,512 INFO L231 Difference]: Finished difference. Result has 341 places, 267 transitions, 1983 flow [2024-06-14 12:22:41,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1983, PETRI_PLACES=341, PETRI_TRANSITIONS=267} [2024-06-14 12:22:41,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-14 12:22:41,513 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 267 transitions, 1983 flow [2024-06-14 12:22:41,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:41,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:41,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:41,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 12:22:41,513 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)] === [2024-06-14 12:22:41,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:41,513 INFO L85 PathProgramCache]: Analyzing trace with hash 130758360, now seen corresponding path program 16 times [2024-06-14 12:22:41,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:41,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325677690] [2024-06-14 12:22:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:41,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:42,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:42,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325677690] [2024-06-14 12:22:42,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325677690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:42,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:42,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:42,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487224993] [2024-06-14 12:22:42,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:42,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:42,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:42,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:43,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:43,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 267 transitions, 1983 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:43,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:43,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:43,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:43,523 INFO L124 PetriNetUnfolderBase]: 653/1323 cut-off events. [2024-06-14 12:22:43,523 INFO L125 PetriNetUnfolderBase]: For 172988/172988 co-relation queries the response was YES. [2024-06-14 12:22:43,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6863 conditions, 1323 events. 653/1323 cut-off events. For 172988/172988 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8261 event pairs, 120 based on Foata normal form. 8/1330 useless extension candidates. Maximal degree in co-relation 6732. Up to 1027 conditions per place. [2024-06-14 12:22:43,534 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 67 changer transitions 13/282 dead transitions. [2024-06-14 12:22:43,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 282 transitions, 2639 flow [2024-06-14 12:22:43,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:43,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:43,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:22:43,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:22:43,535 INFO L175 Difference]: Start difference. First operand has 341 places, 267 transitions, 1983 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:22:43,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 282 transitions, 2639 flow [2024-06-14 12:22:44,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 282 transitions, 2491 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:44,010 INFO L231 Difference]: Finished difference. Result has 339 places, 261 transitions, 1941 flow [2024-06-14 12:22:44,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1941, PETRI_PLACES=339, PETRI_TRANSITIONS=261} [2024-06-14 12:22:44,010 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-14 12:22:44,010 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 261 transitions, 1941 flow [2024-06-14 12:22:44,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:44,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:44,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:44,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 12:22:44,011 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)] === [2024-06-14 12:22:44,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:44,011 INFO L85 PathProgramCache]: Analyzing trace with hash 131027130, now seen corresponding path program 17 times [2024-06-14 12:22:44,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:44,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805991162] [2024-06-14 12:22:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:44,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:45,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:45,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805991162] [2024-06-14 12:22:45,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805991162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:45,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:45,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:45,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137005414] [2024-06-14 12:22:45,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:45,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:45,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:45,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:45,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 261 transitions, 1941 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:45,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:45,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:45,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:45,775 INFO L124 PetriNetUnfolderBase]: 659/1339 cut-off events. [2024-06-14 12:22:45,775 INFO L125 PetriNetUnfolderBase]: For 205144/205144 co-relation queries the response was YES. [2024-06-14 12:22:45,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7910 conditions, 1339 events. 659/1339 cut-off events. For 205144/205144 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8360 event pairs, 127 based on Foata normal form. 6/1344 useless extension candidates. Maximal degree in co-relation 7780. Up to 952 conditions per place. [2024-06-14 12:22:45,786 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 88 changer transitions 6/280 dead transitions. [2024-06-14 12:22:45,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 280 transitions, 2871 flow [2024-06-14 12:22:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:45,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:45,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:22:45,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 12:22:45,787 INFO L175 Difference]: Start difference. First operand has 339 places, 261 transitions, 1941 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:22:45,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 280 transitions, 2871 flow [2024-06-14 12:22:46,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 280 transitions, 2715 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:46,555 INFO L231 Difference]: Finished difference. Result has 334 places, 259 transitions, 1965 flow [2024-06-14 12:22:46,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1965, PETRI_PLACES=334, PETRI_TRANSITIONS=259} [2024-06-14 12:22:46,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-14 12:22:46,555 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 259 transitions, 1965 flow [2024-06-14 12:22:46,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:46,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:46,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:46,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 12:22:46,555 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)] === [2024-06-14 12:22:46,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:46,556 INFO L85 PathProgramCache]: Analyzing trace with hash 131017830, now seen corresponding path program 18 times [2024-06-14 12:22:46,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:46,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715837624] [2024-06-14 12:22:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:46,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:47,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:47,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:47,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715837624] [2024-06-14 12:22:47,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715837624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:47,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:47,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:47,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169870161] [2024-06-14 12:22:47,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:47,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:47,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:47,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:47,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:47,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:47,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 259 transitions, 1965 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:47,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:47,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:47,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:48,180 INFO L124 PetriNetUnfolderBase]: 657/1337 cut-off events. [2024-06-14 12:22:48,180 INFO L125 PetriNetUnfolderBase]: For 214582/214582 co-relation queries the response was YES. [2024-06-14 12:22:48,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7893 conditions, 1337 events. 657/1337 cut-off events. For 214582/214582 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8339 event pairs, 133 based on Foata normal form. 8/1344 useless extension candidates. Maximal degree in co-relation 7765. Up to 1002 conditions per place. [2024-06-14 12:22:48,188 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 84 changer transitions 11/274 dead transitions. [2024-06-14 12:22:48,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 274 transitions, 2601 flow [2024-06-14 12:22:48,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:48,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:22:48,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:22:48,189 INFO L175 Difference]: Start difference. First operand has 334 places, 259 transitions, 1965 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:22:48,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 274 transitions, 2601 flow [2024-06-14 12:22:48,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 274 transitions, 2425 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:48,824 INFO L231 Difference]: Finished difference. Result has 333 places, 254 transitions, 1931 flow [2024-06-14 12:22:48,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1789, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1931, PETRI_PLACES=333, PETRI_TRANSITIONS=254} [2024-06-14 12:22:48,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-14 12:22:48,825 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 254 transitions, 1931 flow [2024-06-14 12:22:48,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:48,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:48,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:48,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 12:22:48,825 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)] === [2024-06-14 12:22:48,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:48,826 INFO L85 PathProgramCache]: Analyzing trace with hash -54353602, now seen corresponding path program 19 times [2024-06-14 12:22:48,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:48,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113131027] [2024-06-14 12:22:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:48,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:49,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:49,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113131027] [2024-06-14 12:22:49,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113131027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:49,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:49,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:49,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850955473] [2024-06-14 12:22:49,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:49,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:49,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:49,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:49,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:50,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:50,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 254 transitions, 1931 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:50,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:50,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:50,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:50,533 INFO L124 PetriNetUnfolderBase]: 668/1360 cut-off events. [2024-06-14 12:22:50,533 INFO L125 PetriNetUnfolderBase]: For 244181/244181 co-relation queries the response was YES. [2024-06-14 12:22:50,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8924 conditions, 1360 events. 668/1360 cut-off events. For 244181/244181 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8515 event pairs, 139 based on Foata normal form. 6/1365 useless extension candidates. Maximal degree in co-relation 8797. Up to 978 conditions per place. [2024-06-14 12:22:50,545 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 166 selfloop transitions, 98 changer transitions 6/273 dead transitions. [2024-06-14 12:22:50,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 273 transitions, 2835 flow [2024-06-14 12:22:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:50,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:22:50,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 12:22:50,546 INFO L175 Difference]: Start difference. First operand has 333 places, 254 transitions, 1931 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:22:50,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 273 transitions, 2835 flow [2024-06-14 12:22:51,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 273 transitions, 2651 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 12:22:51,360 INFO L231 Difference]: Finished difference. Result has 328 places, 252 transitions, 1944 flow [2024-06-14 12:22:51,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1944, PETRI_PLACES=328, PETRI_TRANSITIONS=252} [2024-06-14 12:22:51,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-14 12:22:51,361 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 252 transitions, 1944 flow [2024-06-14 12:22:51,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:51,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:51,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:51,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 12:22:51,361 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)] === [2024-06-14 12:22:51,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1657166140, now seen corresponding path program 20 times [2024-06-14 12:22:51,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:51,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397164172] [2024-06-14 12:22:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:51,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:52,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:52,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397164172] [2024-06-14 12:22:52,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397164172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:52,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:52,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:52,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419657057] [2024-06-14 12:22:52,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:52,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:52,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:52,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:52,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:52,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:52,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 252 transitions, 1944 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:52,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:52,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:52,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:53,251 INFO L124 PetriNetUnfolderBase]: 644/1308 cut-off events. [2024-06-14 12:22:53,251 INFO L125 PetriNetUnfolderBase]: For 203716/203716 co-relation queries the response was YES. [2024-06-14 12:22:53,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7734 conditions, 1308 events. 644/1308 cut-off events. For 203716/203716 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8116 event pairs, 130 based on Foata normal form. 8/1315 useless extension candidates. Maximal degree in co-relation 7609. Up to 1036 conditions per place. [2024-06-14 12:22:53,262 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 64 changer transitions 9/267 dead transitions. [2024-06-14 12:22:53,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 267 transitions, 2564 flow [2024-06-14 12:22:53,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:22:53,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 12:22:53,263 INFO L175 Difference]: Start difference. First operand has 328 places, 252 transitions, 1944 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:22:53,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 267 transitions, 2564 flow [2024-06-14 12:22:53,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 267 transitions, 2368 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:53,929 INFO L231 Difference]: Finished difference. Result has 327 places, 249 transitions, 1860 flow [2024-06-14 12:22:53,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1860, PETRI_PLACES=327, PETRI_TRANSITIONS=249} [2024-06-14 12:22:53,929 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-14 12:22:53,929 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 249 transitions, 1860 flow [2024-06-14 12:22:53,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:53,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:53,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:53,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 12:22:53,930 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)] === [2024-06-14 12:22:53,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1814612598, now seen corresponding path program 21 times [2024-06-14 12:22:53,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:53,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011539509] [2024-06-14 12:22:53,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:53,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:55,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:55,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:55,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011539509] [2024-06-14 12:22:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011539509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:55,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:55,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:55,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277598690] [2024-06-14 12:22:55,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:55,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:55,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:55,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:55,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:55,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:55,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 249 transitions, 1860 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:55,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:55,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:55,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:55,904 INFO L124 PetriNetUnfolderBase]: 647/1325 cut-off events. [2024-06-14 12:22:55,905 INFO L125 PetriNetUnfolderBase]: For 232667/232667 co-relation queries the response was YES. [2024-06-14 12:22:55,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7704 conditions, 1325 events. 647/1325 cut-off events. For 232667/232667 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8260 event pairs, 138 based on Foata normal form. 14/1338 useless extension candidates. Maximal degree in co-relation 7580. Up to 1019 conditions per place. [2024-06-14 12:22:55,914 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 177 selfloop transitions, 71 changer transitions 13/264 dead transitions. [2024-06-14 12:22:55,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 264 transitions, 2474 flow [2024-06-14 12:22:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:22:55,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-14 12:22:55,915 INFO L175 Difference]: Start difference. First operand has 327 places, 249 transitions, 1860 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:22:55,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 264 transitions, 2474 flow [2024-06-14 12:22:56,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 264 transitions, 2330 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:56,534 INFO L231 Difference]: Finished difference. Result has 324 places, 243 transitions, 1835 flow [2024-06-14 12:22:56,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1835, PETRI_PLACES=324, PETRI_TRANSITIONS=243} [2024-06-14 12:22:56,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-14 12:22:56,534 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 243 transitions, 1835 flow [2024-06-14 12:22:56,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:56,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:56,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:56,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 12:22:56,535 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)] === [2024-06-14 12:22:56,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:56,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1814872068, now seen corresponding path program 22 times [2024-06-14 12:22:56,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:56,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085228591] [2024-06-14 12:22:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:56,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:57,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:57,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085228591] [2024-06-14 12:22:57,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085228591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:57,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:57,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:57,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461354756] [2024-06-14 12:22:57,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:57,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:57,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:57,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:57,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:57,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 243 transitions, 1835 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:57,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:57,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:57,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:58,094 INFO L124 PetriNetUnfolderBase]: 605/1237 cut-off events. [2024-06-14 12:22:58,094 INFO L125 PetriNetUnfolderBase]: For 148940/148940 co-relation queries the response was YES. [2024-06-14 12:22:58,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6355 conditions, 1237 events. 605/1237 cut-off events. For 148940/148940 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7599 event pairs, 121 based on Foata normal form. 8/1244 useless extension candidates. Maximal degree in co-relation 6232. Up to 915 conditions per place. [2024-06-14 12:22:58,105 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 154 selfloop transitions, 89 changer transitions 12/258 dead transitions. [2024-06-14 12:22:58,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 258 transitions, 2431 flow [2024-06-14 12:22:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:22:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:22:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 12:22:58,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 12:22:58,106 INFO L175 Difference]: Start difference. First operand has 324 places, 243 transitions, 1835 flow. Second operand 12 states and 147 transitions. [2024-06-14 12:22:58,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 258 transitions, 2431 flow [2024-06-14 12:22:58,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 258 transitions, 2275 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-14 12:22:58,544 INFO L231 Difference]: Finished difference. Result has 319 places, 238 transitions, 1836 flow [2024-06-14 12:22:58,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1836, PETRI_PLACES=319, PETRI_TRANSITIONS=238} [2024-06-14 12:22:58,545 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-14 12:22:58,545 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 238 transitions, 1836 flow [2024-06-14 12:22:58,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:58,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:58,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:58,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 12:22:58,545 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)] === [2024-06-14 12:22:58,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:58,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1918225320, now seen corresponding path program 23 times [2024-06-14 12:22:58,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:58,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310054332] [2024-06-14 12:22:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:58,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:59,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:59,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310054332] [2024-06-14 12:22:59,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310054332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:59,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:59,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:22:59,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615605968] [2024-06-14 12:22:59,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:59,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:22:59,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:59,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:22:59,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:22:59,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:22:59,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 238 transitions, 1836 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:59,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:59,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:22:59,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:00,219 INFO L124 PetriNetUnfolderBase]: 616/1258 cut-off events. [2024-06-14 12:23:00,219 INFO L125 PetriNetUnfolderBase]: For 175379/175379 co-relation queries the response was YES. [2024-06-14 12:23:00,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7312 conditions, 1258 events. 616/1258 cut-off events. For 175379/175379 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7719 event pairs, 178 based on Foata normal form. 6/1263 useless extension candidates. Maximal degree in co-relation 7191. Up to 1086 conditions per place. [2024-06-14 12:23:00,230 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 25 changer transitions 6/258 dead transitions. [2024-06-14 12:23:00,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 258 transitions, 2684 flow [2024-06-14 12:23:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:23:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:23:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-14 12:23:00,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3701923076923077 [2024-06-14 12:23:00,233 INFO L175 Difference]: Start difference. First operand has 319 places, 238 transitions, 1836 flow. Second operand 13 states and 154 transitions. [2024-06-14 12:23:00,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 258 transitions, 2684 flow [2024-06-14 12:23:00,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 258 transitions, 2480 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-14 12:23:00,782 INFO L231 Difference]: Finished difference. Result has 314 places, 236 transitions, 1689 flow [2024-06-14 12:23:00,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1689, PETRI_PLACES=314, PETRI_TRANSITIONS=236} [2024-06-14 12:23:00,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-14 12:23:00,782 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 236 transitions, 1689 flow [2024-06-14 12:23:00,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:00,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:00,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:00,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 12:23:00,783 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)] === [2024-06-14 12:23:00,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2063033446, now seen corresponding path program 24 times [2024-06-14 12:23:00,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:00,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396431596] [2024-06-14 12:23:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:00,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:02,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:02,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396431596] [2024-06-14 12:23:02,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396431596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:02,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:02,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:02,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691298458] [2024-06-14 12:23:02,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:02,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:02,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:02,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:02,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:02,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:02,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 236 transitions, 1689 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:02,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:02,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:02,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:02,646 INFO L124 PetriNetUnfolderBase]: 614/1256 cut-off events. [2024-06-14 12:23:02,647 INFO L125 PetriNetUnfolderBase]: For 180154/180154 co-relation queries the response was YES. [2024-06-14 12:23:02,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7082 conditions, 1256 events. 614/1256 cut-off events. For 180154/180154 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7723 event pairs, 184 based on Foata normal form. 8/1263 useless extension candidates. Maximal degree in co-relation 6963. Up to 1141 conditions per place. [2024-06-14 12:23:02,657 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 220 selfloop transitions, 19 changer transitions 9/251 dead transitions. [2024-06-14 12:23:02,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 251 transitions, 2261 flow [2024-06-14 12:23:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 12:23:02,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-14 12:23:02,657 INFO L175 Difference]: Start difference. First operand has 314 places, 236 transitions, 1689 flow. Second operand 12 states and 139 transitions. [2024-06-14 12:23:02,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 251 transitions, 2261 flow [2024-06-14 12:23:03,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 251 transitions, 2205 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:23:03,321 INFO L231 Difference]: Finished difference. Result has 312 places, 233 transitions, 1655 flow [2024-06-14 12:23:03,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1655, PETRI_PLACES=312, PETRI_TRANSITIONS=233} [2024-06-14 12:23:03,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-14 12:23:03,321 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 233 transitions, 1655 flow [2024-06-14 12:23:03,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:03,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:03,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:03,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 12:23:03,322 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)] === [2024-06-14 12:23:03,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash 430285184, now seen corresponding path program 25 times [2024-06-14 12:23:03,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117325491] [2024-06-14 12:23:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:03,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:04,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:04,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117325491] [2024-06-14 12:23:04,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117325491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:04,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:04,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:04,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440873502] [2024-06-14 12:23:04,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:04,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:04,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:04,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:04,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:04,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:04,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 233 transitions, 1655 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:04,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:04,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:04,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:05,052 INFO L124 PetriNetUnfolderBase]: 587/1201 cut-off events. [2024-06-14 12:23:05,052 INFO L125 PetriNetUnfolderBase]: For 136147/136147 co-relation queries the response was YES. [2024-06-14 12:23:05,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5964 conditions, 1201 events. 587/1201 cut-off events. For 136147/136147 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7318 event pairs, 172 based on Foata normal form. 8/1208 useless extension candidates. Maximal degree in co-relation 5847. Up to 1082 conditions per place. [2024-06-14 12:23:05,061 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 20 changer transitions 11/249 dead transitions. [2024-06-14 12:23:05,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 249 transitions, 2225 flow [2024-06-14 12:23:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:23:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:23:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-14 12:23:05,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3557692307692308 [2024-06-14 12:23:05,061 INFO L175 Difference]: Start difference. First operand has 312 places, 233 transitions, 1655 flow. Second operand 13 states and 148 transitions. [2024-06-14 12:23:05,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 249 transitions, 2225 flow [2024-06-14 12:23:05,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 249 transitions, 2182 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 12:23:05,428 INFO L231 Difference]: Finished difference. Result has 311 places, 229 transitions, 1633 flow [2024-06-14 12:23:05,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1633, PETRI_PLACES=311, PETRI_TRANSITIONS=229} [2024-06-14 12:23:05,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-14 12:23:05,429 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 229 transitions, 1633 flow [2024-06-14 12:23:05,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:05,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:05,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:05,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 12:23:05,429 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)] === [2024-06-14 12:23:05,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash 194997068, now seen corresponding path program 26 times [2024-06-14 12:23:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:05,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618411631] [2024-06-14 12:23:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:06,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:06,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618411631] [2024-06-14 12:23:06,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618411631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:06,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:06,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:06,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774981110] [2024-06-14 12:23:06,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:06,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:06,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:06,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:06,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:06,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:06,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 229 transitions, 1633 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:06,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:06,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:06,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:07,118 INFO L124 PetriNetUnfolderBase]: 599/1231 cut-off events. [2024-06-14 12:23:07,118 INFO L125 PetriNetUnfolderBase]: For 165937/165937 co-relation queries the response was YES. [2024-06-14 12:23:07,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6938 conditions, 1231 events. 599/1231 cut-off events. For 165937/165937 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7537 event pairs, 180 based on Foata normal form. 6/1236 useless extension candidates. Maximal degree in co-relation 6821. Up to 1071 conditions per place. [2024-06-14 12:23:07,128 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 221 selfloop transitions, 17 changer transitions 7/248 dead transitions. [2024-06-14 12:23:07,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 248 transitions, 2445 flow [2024-06-14 12:23:07,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:23:07,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 12:23:07,129 INFO L175 Difference]: Start difference. First operand has 311 places, 229 transitions, 1633 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:23:07,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 248 transitions, 2445 flow [2024-06-14 12:23:07,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 248 transitions, 2379 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-14 12:23:07,676 INFO L231 Difference]: Finished difference. Result has 305 places, 226 transitions, 1597 flow [2024-06-14 12:23:07,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1597, PETRI_PLACES=305, PETRI_TRANSITIONS=226} [2024-06-14 12:23:07,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-14 12:23:07,676 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 226 transitions, 1597 flow [2024-06-14 12:23:07,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:07,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:07,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:07,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 12:23:07,676 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)] === [2024-06-14 12:23:07,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:07,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1907183430, now seen corresponding path program 27 times [2024-06-14 12:23:07,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:07,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472387532] [2024-06-14 12:23:07,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:07,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:08,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:08,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472387532] [2024-06-14 12:23:08,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472387532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:08,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:08,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:08,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375588841] [2024-06-14 12:23:08,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:08,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:08,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:08,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:08,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:08,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:08,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 226 transitions, 1597 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:08,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:08,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:08,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:09,294 INFO L124 PetriNetUnfolderBase]: 585/1201 cut-off events. [2024-06-14 12:23:09,294 INFO L125 PetriNetUnfolderBase]: For 149718/149718 co-relation queries the response was YES. [2024-06-14 12:23:09,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6454 conditions, 1201 events. 585/1201 cut-off events. For 149718/149718 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7287 event pairs, 175 based on Foata normal form. 6/1206 useless extension candidates. Maximal degree in co-relation 6339. Up to 1037 conditions per place. [2024-06-14 12:23:09,303 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 16 changer transitions 10/247 dead transitions. [2024-06-14 12:23:09,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 247 transitions, 2399 flow [2024-06-14 12:23:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:23:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:23:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-14 12:23:09,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605769230769231 [2024-06-14 12:23:09,304 INFO L175 Difference]: Start difference. First operand has 305 places, 226 transitions, 1597 flow. Second operand 13 states and 150 transitions. [2024-06-14 12:23:09,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 247 transitions, 2399 flow [2024-06-14 12:23:09,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 247 transitions, 2355 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:23:09,769 INFO L231 Difference]: Finished difference. Result has 303 places, 222 transitions, 1570 flow [2024-06-14 12:23:09,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1570, PETRI_PLACES=303, PETRI_TRANSITIONS=222} [2024-06-14 12:23:09,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-14 12:23:09,770 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 222 transitions, 1570 flow [2024-06-14 12:23:09,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:09,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:09,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:09,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 12:23:09,770 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)] === [2024-06-14 12:23:09,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash 194728298, now seen corresponding path program 28 times [2024-06-14 12:23:09,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:09,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127883607] [2024-06-14 12:23:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:09,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:11,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:11,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127883607] [2024-06-14 12:23:11,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127883607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:11,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:11,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:11,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971826909] [2024-06-14 12:23:11,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:11,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:11,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:11,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:11,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:11,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:11,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 222 transitions, 1570 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:11,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:11,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:11,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:11,645 INFO L124 PetriNetUnfolderBase]: 556/1138 cut-off events. [2024-06-14 12:23:11,646 INFO L125 PetriNetUnfolderBase]: For 119820/119820 co-relation queries the response was YES. [2024-06-14 12:23:11,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5388 conditions, 1138 events. 556/1138 cut-off events. For 119820/119820 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6843 event pairs, 167 based on Foata normal form. 8/1145 useless extension candidates. Maximal degree in co-relation 5275. Up to 1037 conditions per place. [2024-06-14 12:23:11,654 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 14 changer transitions 9/237 dead transitions. [2024-06-14 12:23:11,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 237 transitions, 2108 flow [2024-06-14 12:23:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:11,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 12:23:11,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-14 12:23:11,655 INFO L175 Difference]: Start difference. First operand has 303 places, 222 transitions, 1570 flow. Second operand 12 states and 134 transitions. [2024-06-14 12:23:11,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 237 transitions, 2108 flow [2024-06-14 12:23:11,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 237 transitions, 2066 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-14 12:23:11,955 INFO L231 Difference]: Finished difference. Result has 297 places, 219 transitions, 1541 flow [2024-06-14 12:23:11,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1541, PETRI_PLACES=297, PETRI_TRANSITIONS=219} [2024-06-14 12:23:11,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-14 12:23:11,956 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 219 transitions, 1541 flow [2024-06-14 12:23:11,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:11,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:11,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:11,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 12:23:11,956 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)] === [2024-06-14 12:23:11,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:11,957 INFO L85 PathProgramCache]: Analyzing trace with hash -918091136, now seen corresponding path program 36 times [2024-06-14 12:23:11,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:11,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774059640] [2024-06-14 12:23:11,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:11,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:12,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:12,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774059640] [2024-06-14 12:23:12,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774059640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:12,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:12,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:12,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360848524] [2024-06-14 12:23:12,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:12,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:12,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:12,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:12,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:13,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:13,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 219 transitions, 1541 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:13,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:13,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:13,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:13,396 INFO L124 PetriNetUnfolderBase]: 555/1140 cut-off events. [2024-06-14 12:23:13,396 INFO L125 PetriNetUnfolderBase]: For 113227/113227 co-relation queries the response was YES. [2024-06-14 12:23:13,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5286 conditions, 1140 events. 555/1140 cut-off events. For 113227/113227 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6856 event pairs, 111 based on Foata normal form. 8/1147 useless extension candidates. Maximal degree in co-relation 5176. Up to 1022 conditions per place. [2024-06-14 12:23:13,404 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 23 changer transitions 8/242 dead transitions. [2024-06-14 12:23:13,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 242 transitions, 2107 flow [2024-06-14 12:23:13,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:13,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 12:23:13,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-14 12:23:13,405 INFO L175 Difference]: Start difference. First operand has 297 places, 219 transitions, 1541 flow. Second operand 12 states and 143 transitions. [2024-06-14 12:23:13,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 242 transitions, 2107 flow [2024-06-14 12:23:13,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 242 transitions, 2069 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:23:13,699 INFO L231 Difference]: Finished difference. Result has 295 places, 220 transitions, 1571 flow [2024-06-14 12:23:13,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1571, PETRI_PLACES=295, PETRI_TRANSITIONS=220} [2024-06-14 12:23:13,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-14 12:23:13,700 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 220 transitions, 1571 flow [2024-06-14 12:23:13,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:13,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:13,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:13,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 12:23:13,700 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)] === [2024-06-14 12:23:13,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:13,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1110941000, now seen corresponding path program 37 times [2024-06-14 12:23:13,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:13,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783256654] [2024-06-14 12:23:13,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:13,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:14,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:14,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783256654] [2024-06-14 12:23:14,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783256654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:14,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:14,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:23:14,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139936647] [2024-06-14 12:23:14,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:14,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:23:14,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:14,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:23:14,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:23:14,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:14,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 220 transitions, 1571 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:14,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:14,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:14,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:15,062 INFO L124 PetriNetUnfolderBase]: 537/1102 cut-off events. [2024-06-14 12:23:15,062 INFO L125 PetriNetUnfolderBase]: For 74849/74849 co-relation queries the response was YES. [2024-06-14 12:23:15,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4965 conditions, 1102 events. 537/1102 cut-off events. For 74849/74849 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6613 event pairs, 108 based on Foata normal form. 2/1103 useless extension candidates. Maximal degree in co-relation 4854. Up to 1019 conditions per place. [2024-06-14 12:23:15,070 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 21 changer transitions 0/236 dead transitions. [2024-06-14 12:23:15,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 236 transitions, 2077 flow [2024-06-14 12:23:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 12:23:15,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-14 12:23:15,071 INFO L175 Difference]: Start difference. First operand has 295 places, 220 transitions, 1571 flow. Second operand 12 states and 139 transitions. [2024-06-14 12:23:15,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 236 transitions, 2077 flow [2024-06-14 12:23:15,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 236 transitions, 2021 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:23:15,318 INFO L231 Difference]: Finished difference. Result has 295 places, 220 transitions, 1561 flow [2024-06-14 12:23:15,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1561, PETRI_PLACES=295, PETRI_TRANSITIONS=220} [2024-06-14 12:23:15,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-14 12:23:15,318 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 220 transitions, 1561 flow [2024-06-14 12:23:15,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:15,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:15,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:15,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 12:23:15,319 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)] === [2024-06-14 12:23:15,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:15,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1029881678, now seen corresponding path program 29 times [2024-06-14 12:23:15,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:15,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567805445] [2024-06-14 12:23:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:15,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:16,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:16,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567805445] [2024-06-14 12:23:16,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567805445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:16,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:16,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:16,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361889401] [2024-06-14 12:23:16,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:16,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:16,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:16,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:16,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:16,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:16,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 220 transitions, 1561 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:16,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:16,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:16,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:17,217 INFO L124 PetriNetUnfolderBase]: 535/1104 cut-off events. [2024-06-14 12:23:17,217 INFO L125 PetriNetUnfolderBase]: For 93207/93207 co-relation queries the response was YES. [2024-06-14 12:23:17,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 1104 events. 535/1104 cut-off events. For 93207/93207 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6641 event pairs, 106 based on Foata normal form. 14/1117 useless extension candidates. Maximal degree in co-relation 4052. Up to 937 conditions per place. [2024-06-14 12:23:17,225 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 196 selfloop transitions, 26 changer transitions 13/238 dead transitions. [2024-06-14 12:23:17,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 238 transitions, 2077 flow [2024-06-14 12:23:17,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:23:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:23:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 156 transitions. [2024-06-14 12:23:17,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:23:17,226 INFO L175 Difference]: Start difference. First operand has 295 places, 220 transitions, 1561 flow. Second operand 13 states and 156 transitions. [2024-06-14 12:23:17,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 238 transitions, 2077 flow [2024-06-14 12:23:17,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 238 transitions, 1929 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-14 12:23:17,384 INFO L231 Difference]: Finished difference. Result has 293 places, 213 transitions, 1403 flow [2024-06-14 12:23:17,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1403, PETRI_PLACES=293, PETRI_TRANSITIONS=213} [2024-06-14 12:23:17,384 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-14 12:23:17,384 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 213 transitions, 1403 flow [2024-06-14 12:23:17,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:17,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:17,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:17,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 12:23:17,385 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)] === [2024-06-14 12:23:17,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash 670583961, now seen corresponding path program 1 times [2024-06-14 12:23:17,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:17,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110324229] [2024-06-14 12:23:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:17,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:18,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:18,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110324229] [2024-06-14 12:23:18,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110324229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:18,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:18,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:18,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966352850] [2024-06-14 12:23:18,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:18,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:18,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:18,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:18,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:18,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 213 transitions, 1403 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:18,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:18,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:18,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:18,944 INFO L124 PetriNetUnfolderBase]: 511/1056 cut-off events. [2024-06-14 12:23:18,944 INFO L125 PetriNetUnfolderBase]: For 57097/57097 co-relation queries the response was YES. [2024-06-14 12:23:18,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3811 conditions, 1056 events. 511/1056 cut-off events. For 57097/57097 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6344 event pairs, 85 based on Foata normal form. 6/1061 useless extension candidates. Maximal degree in co-relation 3703. Up to 851 conditions per place. [2024-06-14 12:23:18,950 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 184 selfloop transitions, 31 changer transitions 16/234 dead transitions. [2024-06-14 12:23:18,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 234 transitions, 1917 flow [2024-06-14 12:23:18,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 12:23:18,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 12:23:18,951 INFO L175 Difference]: Start difference. First operand has 293 places, 213 transitions, 1403 flow. Second operand 12 states and 145 transitions. [2024-06-14 12:23:18,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 234 transitions, 1917 flow [2024-06-14 12:23:19,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 234 transitions, 1766 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-14 12:23:19,086 INFO L231 Difference]: Finished difference. Result has 285 places, 205 transitions, 1278 flow [2024-06-14 12:23:19,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1278, PETRI_PLACES=285, PETRI_TRANSITIONS=205} [2024-06-14 12:23:19,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-14 12:23:19,087 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 205 transitions, 1278 flow [2024-06-14 12:23:19,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:19,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:19,087 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] [2024-06-14 12:23:19,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 12:23:19,087 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)] === [2024-06-14 12:23:19,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash 847715481, now seen corresponding path program 2 times [2024-06-14 12:23:19,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:19,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876478013] [2024-06-14 12:23:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:19,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:20,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:20,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876478013] [2024-06-14 12:23:20,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876478013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:20,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:20,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:20,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706512605] [2024-06-14 12:23:20,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:20,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:20,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:20,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:20,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:20,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 205 transitions, 1278 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:20,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:20,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:20,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:20,736 INFO L124 PetriNetUnfolderBase]: 485/1010 cut-off events. [2024-06-14 12:23:20,736 INFO L125 PetriNetUnfolderBase]: For 55851/55851 co-relation queries the response was YES. [2024-06-14 12:23:20,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3505 conditions, 1010 events. 485/1010 cut-off events. For 55851/55851 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6006 event pairs, 87 based on Foata normal form. 6/1015 useless extension candidates. Maximal degree in co-relation 3402. Up to 861 conditions per place. [2024-06-14 12:23:20,741 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 29 changer transitions 13/224 dead transitions. [2024-06-14 12:23:20,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 224 transitions, 1766 flow [2024-06-14 12:23:20,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 12:23:20,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 12:23:20,742 INFO L175 Difference]: Start difference. First operand has 285 places, 205 transitions, 1278 flow. Second operand 12 states and 140 transitions. [2024-06-14 12:23:20,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 224 transitions, 1766 flow [2024-06-14 12:23:20,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 224 transitions, 1692 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-14 12:23:20,859 INFO L231 Difference]: Finished difference. Result has 275 places, 199 transitions, 1237 flow [2024-06-14 12:23:20,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1237, PETRI_PLACES=275, PETRI_TRANSITIONS=199} [2024-06-14 12:23:20,859 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-14 12:23:20,859 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 199 transitions, 1237 flow [2024-06-14 12:23:20,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:20,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:20,860 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] [2024-06-14 12:23:20,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 12:23:20,860 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)] === [2024-06-14 12:23:20,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:20,860 INFO L85 PathProgramCache]: Analyzing trace with hash 841286391, now seen corresponding path program 3 times [2024-06-14 12:23:20,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:20,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114512080] [2024-06-14 12:23:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:20,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:21,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:21,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114512080] [2024-06-14 12:23:21,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114512080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:21,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:21,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:21,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298766077] [2024-06-14 12:23:21,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:21,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:21,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:21,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:21,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:22,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:22,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 199 transitions, 1237 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:22,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:22,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:22,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:22,495 INFO L124 PetriNetUnfolderBase]: 471/984 cut-off events. [2024-06-14 12:23:22,495 INFO L125 PetriNetUnfolderBase]: For 50215/50215 co-relation queries the response was YES. [2024-06-14 12:23:22,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3388 conditions, 984 events. 471/984 cut-off events. For 50215/50215 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5842 event pairs, 85 based on Foata normal form. 6/989 useless extension candidates. Maximal degree in co-relation 3290. Up to 839 conditions per place. [2024-06-14 12:23:22,501 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 20 changer transitions 21/219 dead transitions. [2024-06-14 12:23:22,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 219 transitions, 1717 flow [2024-06-14 12:23:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:22,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:22,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 12:23:22,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 12:23:22,502 INFO L175 Difference]: Start difference. First operand has 275 places, 199 transitions, 1237 flow. Second operand 12 states and 140 transitions. [2024-06-14 12:23:22,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 219 transitions, 1717 flow [2024-06-14 12:23:22,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 219 transitions, 1651 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:23:22,580 INFO L231 Difference]: Finished difference. Result has 268 places, 188 transitions, 1159 flow [2024-06-14 12:23:22,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1159, PETRI_PLACES=268, PETRI_TRANSITIONS=188} [2024-06-14 12:23:22,580 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-14 12:23:22,581 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 188 transitions, 1159 flow [2024-06-14 12:23:22,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:22,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:22,581 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] [2024-06-14 12:23:22,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 12:23:22,581 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)] === [2024-06-14 12:23:22,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:22,581 INFO L85 PathProgramCache]: Analyzing trace with hash -524350067, now seen corresponding path program 4 times [2024-06-14 12:23:22,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:22,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318958326] [2024-06-14 12:23:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:22,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:23,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:23,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318958326] [2024-06-14 12:23:23,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318958326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:23,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:23,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:23,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487758132] [2024-06-14 12:23:23,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:23,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:23,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:23,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:23,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:23,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:23,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 188 transitions, 1159 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:23,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:23,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:23,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:24,222 INFO L124 PetriNetUnfolderBase]: 451/944 cut-off events. [2024-06-14 12:23:24,223 INFO L125 PetriNetUnfolderBase]: For 46987/46987 co-relation queries the response was YES. [2024-06-14 12:23:24,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3233 conditions, 944 events. 451/944 cut-off events. For 46987/46987 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5543 event pairs, 79 based on Foata normal form. 6/949 useless extension candidates. Maximal degree in co-relation 3138. Up to 801 conditions per place. [2024-06-14 12:23:24,228 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 170 selfloop transitions, 14 changer transitions 23/210 dead transitions. [2024-06-14 12:23:24,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 210 transitions, 1625 flow [2024-06-14 12:23:24,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:24,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:23:24,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 12:23:24,229 INFO L175 Difference]: Start difference. First operand has 268 places, 188 transitions, 1159 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:23:24,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 210 transitions, 1625 flow [2024-06-14 12:23:24,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 210 transitions, 1575 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:23:24,314 INFO L231 Difference]: Finished difference. Result has 256 places, 178 transitions, 1086 flow [2024-06-14 12:23:24,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1086, PETRI_PLACES=256, PETRI_TRANSITIONS=178} [2024-06-14 12:23:24,315 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-14 12:23:24,315 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 178 transitions, 1086 flow [2024-06-14 12:23:24,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:24,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:24,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:24,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 12:23:24,315 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)] === [2024-06-14 12:23:24,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1876986483, now seen corresponding path program 5 times [2024-06-14 12:23:24,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:24,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356484961] [2024-06-14 12:23:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:24,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:25,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:25,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356484961] [2024-06-14 12:23:25,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356484961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:25,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:25,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:25,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779149572] [2024-06-14 12:23:25,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:25,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:25,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:25,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:25,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:25,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:25,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 178 transitions, 1086 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:25,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:25,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:25,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:25,983 INFO L124 PetriNetUnfolderBase]: 426/897 cut-off events. [2024-06-14 12:23:25,983 INFO L125 PetriNetUnfolderBase]: For 42841/42841 co-relation queries the response was YES. [2024-06-14 12:23:25,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3063 conditions, 897 events. 426/897 cut-off events. For 42841/42841 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5199 event pairs, 71 based on Foata normal form. 6/902 useless extension candidates. Maximal degree in co-relation 2972. Up to 741 conditions per place. [2024-06-14 12:23:25,987 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 158 selfloop transitions, 7 changer transitions 33/201 dead transitions. [2024-06-14 12:23:25,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 201 transitions, 1536 flow [2024-06-14 12:23:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:25,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 12:23:25,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 12:23:25,988 INFO L175 Difference]: Start difference. First operand has 256 places, 178 transitions, 1086 flow. Second operand 12 states and 140 transitions. [2024-06-14 12:23:25,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 201 transitions, 1536 flow [2024-06-14 12:23:26,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 201 transitions, 1496 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:23:26,065 INFO L231 Difference]: Finished difference. Result has 244 places, 164 transitions, 984 flow [2024-06-14 12:23:26,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=984, PETRI_PLACES=244, PETRI_TRANSITIONS=164} [2024-06-14 12:23:26,065 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-14 12:23:26,066 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 164 transitions, 984 flow [2024-06-14 12:23:26,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:26,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:26,066 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] [2024-06-14 12:23:26,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 12:23:26,066 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)] === [2024-06-14 12:23:26,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:26,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2046446959, now seen corresponding path program 6 times [2024-06-14 12:23:26,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:26,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353160563] [2024-06-14 12:23:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:26,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:27,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:27,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353160563] [2024-06-14 12:23:27,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353160563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:27,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:27,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:27,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635576486] [2024-06-14 12:23:27,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:27,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:27,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:27,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:27,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:27,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 164 transitions, 984 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:27,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:27,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:27,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:27,945 INFO L124 PetriNetUnfolderBase]: 387/812 cut-off events. [2024-06-14 12:23:27,945 INFO L125 PetriNetUnfolderBase]: For 37904/37904 co-relation queries the response was YES. [2024-06-14 12:23:27,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2768 conditions, 812 events. 387/812 cut-off events. For 37904/37904 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4649 event pairs, 63 based on Foata normal form. 6/817 useless extension candidates. Maximal degree in co-relation 2682. Up to 595 conditions per place. [2024-06-14 12:23:27,949 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 34 changer transitions 14/181 dead transitions. [2024-06-14 12:23:27,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 181 transitions, 1378 flow [2024-06-14 12:23:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 12:23:27,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 12:23:27,949 INFO L175 Difference]: Start difference. First operand has 244 places, 164 transitions, 984 flow. Second operand 12 states and 140 transitions. [2024-06-14 12:23:27,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 181 transitions, 1378 flow [2024-06-14 12:23:28,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 181 transitions, 1339 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-14 12:23:28,007 INFO L231 Difference]: Finished difference. Result has 226 places, 158 transitions, 980 flow [2024-06-14 12:23:28,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=980, PETRI_PLACES=226, PETRI_TRANSITIONS=158} [2024-06-14 12:23:28,007 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-14 12:23:28,007 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 158 transitions, 980 flow [2024-06-14 12:23:28,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:28,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:28,007 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] [2024-06-14 12:23:28,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 12:23:28,008 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)] === [2024-06-14 12:23:28,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1876339175, now seen corresponding path program 7 times [2024-06-14 12:23:28,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:28,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006102085] [2024-06-14 12:23:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:28,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:29,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:29,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006102085] [2024-06-14 12:23:29,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006102085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:29,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:29,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:29,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246338568] [2024-06-14 12:23:29,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:29,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:29,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:29,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:29,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:29,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:29,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 158 transitions, 980 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:29,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:29,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:29,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:29,825 INFO L124 PetriNetUnfolderBase]: 363/768 cut-off events. [2024-06-14 12:23:29,825 INFO L125 PetriNetUnfolderBase]: For 33363/33363 co-relation queries the response was YES. [2024-06-14 12:23:29,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 768 events. 363/768 cut-off events. For 33363/33363 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4343 event pairs, 63 based on Foata normal form. 6/773 useless extension candidates. Maximal degree in co-relation 2579. Up to 591 conditions per place. [2024-06-14 12:23:29,828 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 123 selfloop transitions, 29 changer transitions 19/174 dead transitions. [2024-06-14 12:23:29,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 174 transitions, 1358 flow [2024-06-14 12:23:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 12:23:29,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:23:29,829 INFO L175 Difference]: Start difference. First operand has 226 places, 158 transitions, 980 flow. Second operand 12 states and 136 transitions. [2024-06-14 12:23:29,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 174 transitions, 1358 flow [2024-06-14 12:23:29,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 174 transitions, 1282 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:23:29,874 INFO L231 Difference]: Finished difference. Result has 220 places, 149 transitions, 911 flow [2024-06-14 12:23:29,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=911, PETRI_PLACES=220, PETRI_TRANSITIONS=149} [2024-06-14 12:23:29,875 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-14 12:23:29,875 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 149 transitions, 911 flow [2024-06-14 12:23:29,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:29,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:29,875 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] [2024-06-14 12:23:29,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 12:23:29,875 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)] === [2024-06-14 12:23:29,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:29,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2137697817, now seen corresponding path program 8 times [2024-06-14 12:23:29,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:29,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10307667] [2024-06-14 12:23:29,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:29,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:31,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:31,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:31,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10307667] [2024-06-14 12:23:31,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10307667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:31,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:31,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:31,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226516309] [2024-06-14 12:23:31,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:31,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:31,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:31,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:31,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:31,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:31,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 149 transitions, 911 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:31,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:31,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:31,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:31,615 INFO L124 PetriNetUnfolderBase]: 343/728 cut-off events. [2024-06-14 12:23:31,616 INFO L125 PetriNetUnfolderBase]: For 30717/30717 co-relation queries the response was YES. [2024-06-14 12:23:31,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2510 conditions, 728 events. 343/728 cut-off events. For 30717/30717 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4068 event pairs, 44 based on Foata normal form. 6/733 useless extension candidates. Maximal degree in co-relation 2433. Up to 419 conditions per place. [2024-06-14 12:23:31,619 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 31 changer transitions 21/167 dead transitions. [2024-06-14 12:23:31,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 167 transitions, 1279 flow [2024-06-14 12:23:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 12:23:31,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 12:23:31,620 INFO L175 Difference]: Start difference. First operand has 220 places, 149 transitions, 911 flow. Second operand 12 states and 140 transitions. [2024-06-14 12:23:31,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 167 transitions, 1279 flow [2024-06-14 12:23:31,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 167 transitions, 1209 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:23:31,669 INFO L231 Difference]: Finished difference. Result has 211 places, 138 transitions, 842 flow [2024-06-14 12:23:31,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=842, PETRI_PLACES=211, PETRI_TRANSITIONS=138} [2024-06-14 12:23:31,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-14 12:23:31,670 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 138 transitions, 842 flow [2024-06-14 12:23:31,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:31,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:31,670 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] [2024-06-14 12:23:31,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 12:23:31,670 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)] === [2024-06-14 12:23:31,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:31,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2117743611, now seen corresponding path program 9 times [2024-06-14 12:23:31,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:31,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51712825] [2024-06-14 12:23:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:31,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:33,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:33,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51712825] [2024-06-14 12:23:33,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51712825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:33,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:33,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:33,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596495202] [2024-06-14 12:23:33,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:33,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:33,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:33,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:33,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:33,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:33,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 138 transitions, 842 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:33,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:33,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:33,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:33,628 INFO L124 PetriNetUnfolderBase]: 309/658 cut-off events. [2024-06-14 12:23:33,628 INFO L125 PetriNetUnfolderBase]: For 28957/28961 co-relation queries the response was YES. [2024-06-14 12:23:33,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2320 conditions, 658 events. 309/658 cut-off events. For 28957/28961 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3560 event pairs, 53 based on Foata normal form. 6/663 useless extension candidates. Maximal degree in co-relation 2245. Up to 519 conditions per place. [2024-06-14 12:23:33,632 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 27 changer transitions 12/153 dead transitions. [2024-06-14 12:23:33,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 153 transitions, 1176 flow [2024-06-14 12:23:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 12:23:33,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-14 12:23:33,633 INFO L175 Difference]: Start difference. First operand has 211 places, 138 transitions, 842 flow. Second operand 12 states and 134 transitions. [2024-06-14 12:23:33,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 153 transitions, 1176 flow [2024-06-14 12:23:33,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 153 transitions, 1098 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-14 12:23:33,672 INFO L231 Difference]: Finished difference. Result has 198 places, 133 transitions, 793 flow [2024-06-14 12:23:33,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=793, PETRI_PLACES=198, PETRI_TRANSITIONS=133} [2024-06-14 12:23:33,672 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-14 12:23:33,672 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 133 transitions, 793 flow [2024-06-14 12:23:33,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:33,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:33,672 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] [2024-06-14 12:23:33,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 12:23:33,672 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)] === [2024-06-14 12:23:33,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:33,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1039466547, now seen corresponding path program 10 times [2024-06-14 12:23:33,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:33,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659509183] [2024-06-14 12:23:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:33,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:34,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:34,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659509183] [2024-06-14 12:23:34,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659509183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:34,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:34,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:34,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499273395] [2024-06-14 12:23:34,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:34,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:34,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:34,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:34,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:35,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:35,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 133 transitions, 793 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:35,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:35,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:35,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:35,407 INFO L124 PetriNetUnfolderBase]: 299/640 cut-off events. [2024-06-14 12:23:35,407 INFO L125 PetriNetUnfolderBase]: For 24919/24923 co-relation queries the response was YES. [2024-06-14 12:23:35,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 640 events. 299/640 cut-off events. For 24919/24923 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3424 event pairs, 51 based on Foata normal form. 6/645 useless extension candidates. Maximal degree in co-relation 2139. Up to 491 conditions per place. [2024-06-14 12:23:35,410 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 107 selfloop transitions, 23 changer transitions 16/149 dead transitions. [2024-06-14 12:23:35,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 149 transitions, 1121 flow [2024-06-14 12:23:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:35,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 12:23:35,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-14 12:23:35,411 INFO L175 Difference]: Start difference. First operand has 198 places, 133 transitions, 793 flow. Second operand 12 states and 134 transitions. [2024-06-14 12:23:35,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 149 transitions, 1121 flow [2024-06-14 12:23:35,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 149 transitions, 1063 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:23:35,446 INFO L231 Difference]: Finished difference. Result has 195 places, 126 transitions, 744 flow [2024-06-14 12:23:35,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=744, PETRI_PLACES=195, PETRI_TRANSITIONS=126} [2024-06-14 12:23:35,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-14 12:23:35,447 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 126 transitions, 744 flow [2024-06-14 12:23:35,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:35,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:35,448 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] [2024-06-14 12:23:35,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 12:23:35,448 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)] === [2024-06-14 12:23:35,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:35,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2000092165, now seen corresponding path program 11 times [2024-06-14 12:23:35,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:35,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715882232] [2024-06-14 12:23:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:35,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:36,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:36,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715882232] [2024-06-14 12:23:36,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715882232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:36,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:36,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:36,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922084384] [2024-06-14 12:23:36,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:36,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:36,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:36,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:36,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:36,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:36,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 126 transitions, 744 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:36,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:36,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:36,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:37,207 INFO L124 PetriNetUnfolderBase]: 281/606 cut-off events. [2024-06-14 12:23:37,207 INFO L125 PetriNetUnfolderBase]: For 24188/24192 co-relation queries the response was YES. [2024-06-14 12:23:37,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 606 events. 281/606 cut-off events. For 24188/24192 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3207 event pairs, 43 based on Foata normal form. 6/611 useless extension candidates. Maximal degree in co-relation 2029. Up to 407 conditions per place. [2024-06-14 12:23:37,209 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 101 selfloop transitions, 22 changer transitions 17/143 dead transitions. [2024-06-14 12:23:37,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 143 transitions, 1062 flow [2024-06-14 12:23:37,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 12:23:37,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:23:37,210 INFO L175 Difference]: Start difference. First operand has 195 places, 126 transitions, 744 flow. Second operand 12 states and 136 transitions. [2024-06-14 12:23:37,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 143 transitions, 1062 flow [2024-06-14 12:23:37,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 143 transitions, 1010 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:23:37,248 INFO L231 Difference]: Finished difference. Result has 190 places, 117 transitions, 685 flow [2024-06-14 12:23:37,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=685, PETRI_PLACES=190, PETRI_TRANSITIONS=117} [2024-06-14 12:23:37,248 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-14 12:23:37,248 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 117 transitions, 685 flow [2024-06-14 12:23:37,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:37,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:37,249 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] [2024-06-14 12:23:37,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 12:23:37,249 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)] === [2024-06-14 12:23:37,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:37,250 INFO L85 PathProgramCache]: Analyzing trace with hash -178944157, now seen corresponding path program 12 times [2024-06-14 12:23:37,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:37,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283003266] [2024-06-14 12:23:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:37,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:38,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:38,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283003266] [2024-06-14 12:23:38,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283003266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:38,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:38,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:38,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58685014] [2024-06-14 12:23:38,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:38,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:38,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:38,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:38,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:38,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:38,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 117 transitions, 685 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:38,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:38,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:38,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:38,883 INFO L124 PetriNetUnfolderBase]: 255/552 cut-off events. [2024-06-14 12:23:38,883 INFO L125 PetriNetUnfolderBase]: For 22567/22571 co-relation queries the response was YES. [2024-06-14 12:23:38,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1940 conditions, 552 events. 255/552 cut-off events. For 22567/22571 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2851 event pairs, 45 based on Foata normal form. 6/557 useless extension candidates. Maximal degree in co-relation 1873. Up to 435 conditions per place. [2024-06-14 12:23:38,886 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 17 changer transitions 14/132 dead transitions. [2024-06-14 12:23:38,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 132 transitions, 977 flow [2024-06-14 12:23:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:38,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:38,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:23:38,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:23:38,886 INFO L175 Difference]: Start difference. First operand has 190 places, 117 transitions, 685 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:23:38,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 132 transitions, 977 flow [2024-06-14 12:23:38,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 132 transitions, 913 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-06-14 12:23:38,915 INFO L231 Difference]: Finished difference. Result has 178 places, 110 transitions, 620 flow [2024-06-14 12:23:38,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=620, PETRI_PLACES=178, PETRI_TRANSITIONS=110} [2024-06-14 12:23:38,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-14 12:23:38,915 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 110 transitions, 620 flow [2024-06-14 12:23:38,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:38,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:38,915 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] [2024-06-14 12:23:38,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 12:23:38,916 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)] === [2024-06-14 12:23:38,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash -866327417, now seen corresponding path program 13 times [2024-06-14 12:23:38,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:38,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650854530] [2024-06-14 12:23:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:38,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:40,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:40,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650854530] [2024-06-14 12:23:40,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650854530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:40,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:40,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:40,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148950331] [2024-06-14 12:23:40,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:40,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:40,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:40,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:40,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:40,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:40,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 110 transitions, 620 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:40,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:40,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:40,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:40,633 INFO L124 PetriNetUnfolderBase]: 243/524 cut-off events. [2024-06-14 12:23:40,633 INFO L125 PetriNetUnfolderBase]: For 19647/19651 co-relation queries the response was YES. [2024-06-14 12:23:40,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1812 conditions, 524 events. 243/524 cut-off events. For 19647/19651 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2632 event pairs, 45 based on Foata normal form. 6/529 useless extension candidates. Maximal degree in co-relation 1749. Up to 423 conditions per place. [2024-06-14 12:23:40,635 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 15 changer transitions 12/125 dead transitions. [2024-06-14 12:23:40,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 125 transitions, 898 flow [2024-06-14 12:23:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 12:23:40,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-14 12:23:40,636 INFO L175 Difference]: Start difference. First operand has 178 places, 110 transitions, 620 flow. Second operand 12 states and 130 transitions. [2024-06-14 12:23:40,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 125 transitions, 898 flow [2024-06-14 12:23:40,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 125 transitions, 856 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:23:40,661 INFO L231 Difference]: Finished difference. Result has 172 places, 105 transitions, 585 flow [2024-06-14 12:23:40,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=585, PETRI_PLACES=172, PETRI_TRANSITIONS=105} [2024-06-14 12:23:40,661 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-14 12:23:40,661 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 105 transitions, 585 flow [2024-06-14 12:23:40,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:40,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:40,661 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] [2024-06-14 12:23:40,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 12:23:40,661 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)] === [2024-06-14 12:23:40,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:40,662 INFO L85 PathProgramCache]: Analyzing trace with hash 147065877, now seen corresponding path program 14 times [2024-06-14 12:23:40,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:40,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106072570] [2024-06-14 12:23:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:40,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:41,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:41,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106072570] [2024-06-14 12:23:41,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106072570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:41,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:41,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:41,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937391017] [2024-06-14 12:23:41,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:41,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:41,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:42,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:42,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 105 transitions, 585 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:42,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:42,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:42,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:42,370 INFO L124 PetriNetUnfolderBase]: 233/506 cut-off events. [2024-06-14 12:23:42,370 INFO L125 PetriNetUnfolderBase]: For 18951/18955 co-relation queries the response was YES. [2024-06-14 12:23:42,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1745 conditions, 506 events. 233/506 cut-off events. For 18951/18955 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2504 event pairs, 43 based on Foata normal form. 6/511 useless extension candidates. Maximal degree in co-relation 1683. Up to 395 conditions per place. [2024-06-14 12:23:42,372 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 3 changer transitions 31/121 dead transitions. [2024-06-14 12:23:42,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 121 transitions, 857 flow [2024-06-14 12:23:42,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:42,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:42,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 12:23:42,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-14 12:23:42,372 INFO L175 Difference]: Start difference. First operand has 172 places, 105 transitions, 585 flow. Second operand 12 states and 130 transitions. [2024-06-14 12:23:42,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 121 transitions, 857 flow [2024-06-14 12:23:42,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 121 transitions, 817 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-14 12:23:42,393 INFO L231 Difference]: Finished difference. Result has 166 places, 89 transitions, 466 flow [2024-06-14 12:23:42,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=466, PETRI_PLACES=166, PETRI_TRANSITIONS=89} [2024-06-14 12:23:42,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-14 12:23:42,394 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 89 transitions, 466 flow [2024-06-14 12:23:42,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:42,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:42,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:42,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 12:23:42,394 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)] === [2024-06-14 12:23:42,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:42,395 INFO L85 PathProgramCache]: Analyzing trace with hash 350586901, now seen corresponding path program 15 times [2024-06-14 12:23:42,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:42,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623000372] [2024-06-14 12:23:42,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:42,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:43,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:43,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623000372] [2024-06-14 12:23:43,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623000372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:43,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:43,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:43,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296289041] [2024-06-14 12:23:43,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:43,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:43,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:43,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:43,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:44,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:44,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 89 transitions, 466 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:44,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:44,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:44,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:44,368 INFO L124 PetriNetUnfolderBase]: 206/438 cut-off events. [2024-06-14 12:23:44,368 INFO L125 PetriNetUnfolderBase]: For 17503/17507 co-relation queries the response was YES. [2024-06-14 12:23:44,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1507 conditions, 438 events. 206/438 cut-off events. For 17503/17507 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2085 event pairs, 41 based on Foata normal form. 10/448 useless extension candidates. Maximal degree in co-relation 1447. Up to 296 conditions per place. [2024-06-14 12:23:44,370 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 57 selfloop transitions, 30 changer transitions 13/103 dead transitions. [2024-06-14 12:23:44,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 103 transitions, 696 flow [2024-06-14 12:23:44,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:23:44,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:23:44,371 INFO L175 Difference]: Start difference. First operand has 166 places, 89 transitions, 466 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:23:44,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 103 transitions, 696 flow [2024-06-14 12:23:44,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 103 transitions, 666 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-14 12:23:44,390 INFO L231 Difference]: Finished difference. Result has 140 places, 85 transitions, 481 flow [2024-06-14 12:23:44,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=481, PETRI_PLACES=140, PETRI_TRANSITIONS=85} [2024-06-14 12:23:44,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-14 12:23:44,391 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 85 transitions, 481 flow [2024-06-14 12:23:44,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:44,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:44,391 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] [2024-06-14 12:23:44,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 12:23:44,391 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)] === [2024-06-14 12:23:44,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:44,391 INFO L85 PathProgramCache]: Analyzing trace with hash 179884471, now seen corresponding path program 16 times [2024-06-14 12:23:44,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:44,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577127599] [2024-06-14 12:23:44,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:44,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:45,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:45,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577127599] [2024-06-14 12:23:45,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577127599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:45,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:45,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:45,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883536226] [2024-06-14 12:23:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:45,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:45,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:45,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:45,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:45,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:45,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 85 transitions, 481 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:45,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:45,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:45,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:46,135 INFO L124 PetriNetUnfolderBase]: 195/417 cut-off events. [2024-06-14 12:23:46,135 INFO L125 PetriNetUnfolderBase]: For 13332/13332 co-relation queries the response was YES. [2024-06-14 12:23:46,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 417 events. 195/417 cut-off events. For 13332/13332 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1944 event pairs, 37 based on Foata normal form. 6/423 useless extension candidates. Maximal degree in co-relation 1398. Up to 270 conditions per place. [2024-06-14 12:23:46,137 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 53 selfloop transitions, 28 changer transitions 16/100 dead transitions. [2024-06-14 12:23:46,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 100 transitions, 707 flow [2024-06-14 12:23:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:23:46,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:23:46,137 INFO L175 Difference]: Start difference. First operand has 140 places, 85 transitions, 481 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:23:46,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 100 transitions, 707 flow [2024-06-14 12:23:46,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 100 transitions, 641 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:23:46,151 INFO L231 Difference]: Finished difference. Result has 135 places, 80 transitions, 452 flow [2024-06-14 12:23:46,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=452, PETRI_PLACES=135, PETRI_TRANSITIONS=80} [2024-06-14 12:23:46,152 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-14 12:23:46,152 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 80 transitions, 452 flow [2024-06-14 12:23:46,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:46,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:46,152 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] [2024-06-14 12:23:46,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 12:23:46,153 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)] === [2024-06-14 12:23:46,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:46,153 INFO L85 PathProgramCache]: Analyzing trace with hash -140673511, now seen corresponding path program 17 times [2024-06-14 12:23:46,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:46,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128102473] [2024-06-14 12:23:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:46,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:47,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:47,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128102473] [2024-06-14 12:23:47,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128102473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:47,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:47,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:47,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656259221] [2024-06-14 12:23:47,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:47,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:47,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:47,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:47,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:47,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:47,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 80 transitions, 452 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:47,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:47,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:47,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:47,786 INFO L124 PetriNetUnfolderBase]: 180/388 cut-off events. [2024-06-14 12:23:47,786 INFO L125 PetriNetUnfolderBase]: For 12228/12228 co-relation queries the response was YES. [2024-06-14 12:23:47,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 388 events. 180/388 cut-off events. For 12228/12228 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1756 event pairs, 22 based on Foata normal form. 6/394 useless extension candidates. Maximal degree in co-relation 1306. Up to 156 conditions per place. [2024-06-14 12:23:47,788 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 38 selfloop transitions, 39 changer transitions 16/96 dead transitions. [2024-06-14 12:23:47,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 96 transitions, 672 flow [2024-06-14 12:23:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-14 12:23:47,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-14 12:23:47,789 INFO L175 Difference]: Start difference. First operand has 135 places, 80 transitions, 452 flow. Second operand 12 states and 131 transitions. [2024-06-14 12:23:47,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 96 transitions, 672 flow [2024-06-14 12:23:47,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 96 transitions, 608 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:23:47,802 INFO L231 Difference]: Finished difference. Result has 128 places, 74 transitions, 444 flow [2024-06-14 12:23:47,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=444, PETRI_PLACES=128, PETRI_TRANSITIONS=74} [2024-06-14 12:23:47,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-14 12:23:47,803 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 74 transitions, 444 flow [2024-06-14 12:23:47,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:47,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:47,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:47,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 12:23:47,803 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)] === [2024-06-14 12:23:47,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:47,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1193888619, now seen corresponding path program 18 times [2024-06-14 12:23:47,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:47,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910551265] [2024-06-14 12:23:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:47,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:49,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:49,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910551265] [2024-06-14 12:23:49,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910551265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:49,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:49,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:49,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289346572] [2024-06-14 12:23:49,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:49,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:49,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:49,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:49,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:49,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 74 transitions, 444 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:49,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:49,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:49,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:49,564 INFO L124 PetriNetUnfolderBase]: 161/349 cut-off events. [2024-06-14 12:23:49,564 INFO L125 PetriNetUnfolderBase]: For 10678/10682 co-relation queries the response was YES. [2024-06-14 12:23:49,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284 conditions, 349 events. 161/349 cut-off events. For 10678/10682 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1530 event pairs, 31 based on Foata normal form. 10/359 useless extension candidates. Maximal degree in co-relation 1238. Up to 226 conditions per place. [2024-06-14 12:23:49,566 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 51 selfloop transitions, 23 changer transitions 10/87 dead transitions. [2024-06-14 12:23:49,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 87 transitions, 640 flow [2024-06-14 12:23:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:49,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:23:49,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:23:49,566 INFO L175 Difference]: Start difference. First operand has 128 places, 74 transitions, 444 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:23:49,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 87 transitions, 640 flow [2024-06-14 12:23:49,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 87 transitions, 552 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:23:49,578 INFO L231 Difference]: Finished difference. Result has 119 places, 71 transitions, 391 flow [2024-06-14 12:23:49,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=391, PETRI_PLACES=119, PETRI_TRANSITIONS=71} [2024-06-14 12:23:49,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-14 12:23:49,579 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 71 transitions, 391 flow [2024-06-14 12:23:49,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:49,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:49,579 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] [2024-06-14 12:23:49,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-14 12:23:49,579 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)] === [2024-06-14 12:23:49,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1594254371, now seen corresponding path program 19 times [2024-06-14 12:23:49,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:49,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970395432] [2024-06-14 12:23:49,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:49,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:51,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:51,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970395432] [2024-06-14 12:23:51,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970395432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:51,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:51,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:51,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091041605] [2024-06-14 12:23:51,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:51,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:51,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:51,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:51,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:51,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:51,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 71 transitions, 391 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:51,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:51,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:51,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:51,524 INFO L124 PetriNetUnfolderBase]: 154/336 cut-off events. [2024-06-14 12:23:51,525 INFO L125 PetriNetUnfolderBase]: For 8742/8746 co-relation queries the response was YES. [2024-06-14 12:23:51,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 336 events. 154/336 cut-off events. For 8742/8746 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1443 event pairs, 31 based on Foata normal form. 10/346 useless extension candidates. Maximal degree in co-relation 1120. Up to 216 conditions per place. [2024-06-14 12:23:51,526 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 49 selfloop transitions, 22 changer transitions 10/84 dead transitions. [2024-06-14 12:23:51,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 84 transitions, 581 flow [2024-06-14 12:23:51,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:23:51,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:23:51,528 INFO L175 Difference]: Start difference. First operand has 119 places, 71 transitions, 391 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:23:51,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 84 transitions, 581 flow [2024-06-14 12:23:51,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 84 transitions, 531 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:23:51,540 INFO L231 Difference]: Finished difference. Result has 116 places, 68 transitions, 374 flow [2024-06-14 12:23:51,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=374, PETRI_PLACES=116, PETRI_TRANSITIONS=68} [2024-06-14 12:23:51,541 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-14 12:23:51,541 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 68 transitions, 374 flow [2024-06-14 12:23:51,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:51,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:51,541 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] [2024-06-14 12:23:51,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-14 12:23:51,542 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)] === [2024-06-14 12:23:51,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:51,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1600683461, now seen corresponding path program 20 times [2024-06-14 12:23:51,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:51,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356855296] [2024-06-14 12:23:51,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:51,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:52,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:52,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356855296] [2024-06-14 12:23:52,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356855296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:52,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:52,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:52,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065496880] [2024-06-14 12:23:52,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:52,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:52,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:52,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:53,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:53,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 68 transitions, 374 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:53,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:53,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:53,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:53,377 INFO L124 PetriNetUnfolderBase]: 147/323 cut-off events. [2024-06-14 12:23:53,377 INFO L125 PetriNetUnfolderBase]: For 8290/8294 co-relation queries the response was YES. [2024-06-14 12:23:53,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 323 events. 147/323 cut-off events. For 8290/8294 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1366 event pairs, 29 based on Foata normal form. 10/333 useless extension candidates. Maximal degree in co-relation 1076. Up to 198 conditions per place. [2024-06-14 12:23:53,378 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 46 selfloop transitions, 19 changer transitions 14/82 dead transitions. [2024-06-14 12:23:53,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 82 transitions, 562 flow [2024-06-14 12:23:53,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:53,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:23:53,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:23:53,379 INFO L175 Difference]: Start difference. First operand has 116 places, 68 transitions, 374 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:23:53,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 82 transitions, 562 flow [2024-06-14 12:23:53,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 82 transitions, 512 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:23:53,388 INFO L231 Difference]: Finished difference. Result has 112 places, 63 transitions, 344 flow [2024-06-14 12:23:53,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=344, PETRI_PLACES=112, PETRI_TRANSITIONS=63} [2024-06-14 12:23:53,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-14 12:23:53,388 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 63 transitions, 344 flow [2024-06-14 12:23:53,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:53,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:53,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:53,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-14 12:23:53,389 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)] === [2024-06-14 12:23:53,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:53,389 INFO L85 PathProgramCache]: Analyzing trace with hash 977129421, now seen corresponding path program 21 times [2024-06-14 12:23:53,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:53,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418410306] [2024-06-14 12:23:53,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:53,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:54,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:54,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418410306] [2024-06-14 12:23:54,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418410306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:54,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:54,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:54,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102198070] [2024-06-14 12:23:54,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:54,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:54,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:54,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:54,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:54,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:54,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 63 transitions, 344 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:54,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:54,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:54,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:55,064 INFO L124 PetriNetUnfolderBase]: 135/297 cut-off events. [2024-06-14 12:23:55,065 INFO L125 PetriNetUnfolderBase]: For 7418/7422 co-relation queries the response was YES. [2024-06-14 12:23:55,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 297 events. 135/297 cut-off events. For 7418/7422 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1207 event pairs, 27 based on Foata normal form. 10/307 useless extension candidates. Maximal degree in co-relation 992. Up to 180 conditions per place. [2024-06-14 12:23:55,066 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 43 selfloop transitions, 18 changer transitions 13/77 dead transitions. [2024-06-14 12:23:55,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 77 transitions, 522 flow [2024-06-14 12:23:55,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 12:23:55,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-14 12:23:55,066 INFO L175 Difference]: Start difference. First operand has 112 places, 63 transitions, 344 flow. Second operand 12 states and 130 transitions. [2024-06-14 12:23:55,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 77 transitions, 522 flow [2024-06-14 12:23:55,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 77 transitions, 478 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:23:55,073 INFO L231 Difference]: Finished difference. Result has 106 places, 59 transitions, 321 flow [2024-06-14 12:23:55,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=321, PETRI_PLACES=106, PETRI_TRANSITIONS=59} [2024-06-14 12:23:55,073 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-14 12:23:55,073 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 59 transitions, 321 flow [2024-06-14 12:23:55,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:55,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:55,074 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] [2024-06-14 12:23:55,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-14 12:23:55,074 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)] === [2024-06-14 12:23:55,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1016757099, now seen corresponding path program 22 times [2024-06-14 12:23:55,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:55,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831344776] [2024-06-14 12:23:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:56,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:56,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831344776] [2024-06-14 12:23:56,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831344776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:56,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:56,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:56,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175566860] [2024-06-14 12:23:56,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:56,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:56,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:56,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:56,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:56,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 59 transitions, 321 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:56,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:56,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:56,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:56,814 INFO L124 PetriNetUnfolderBase]: 124/276 cut-off events. [2024-06-14 12:23:56,814 INFO L125 PetriNetUnfolderBase]: For 6596/6600 co-relation queries the response was YES. [2024-06-14 12:23:56,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 276 events. 124/276 cut-off events. For 6596/6600 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1094 event pairs, 23 based on Foata normal form. 6/282 useless extension candidates. Maximal degree in co-relation 922. Up to 154 conditions per place. [2024-06-14 12:23:56,815 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 38 selfloop transitions, 14 changer transitions 19/74 dead transitions. [2024-06-14 12:23:56,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 74 transitions, 495 flow [2024-06-14 12:23:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:56,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 12:23:56,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-14 12:23:56,816 INFO L175 Difference]: Start difference. First operand has 106 places, 59 transitions, 321 flow. Second operand 12 states and 130 transitions. [2024-06-14 12:23:56,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 74 transitions, 495 flow [2024-06-14 12:23:56,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 74 transitions, 451 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:23:56,822 INFO L231 Difference]: Finished difference. Result has 100 places, 52 transitions, 278 flow [2024-06-14 12:23:56,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=278, PETRI_PLACES=100, PETRI_TRANSITIONS=52} [2024-06-14 12:23:56,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-14 12:23:56,822 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 52 transitions, 278 flow [2024-06-14 12:23:56,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:56,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:56,823 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] [2024-06-14 12:23:56,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-14 12:23:56,823 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)] === [2024-06-14 12:23:56,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2114464585, now seen corresponding path program 23 times [2024-06-14 12:23:56,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:56,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872876329] [2024-06-14 12:23:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:56,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:58,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:58,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872876329] [2024-06-14 12:23:58,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872876329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:58,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:58,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:58,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083125779] [2024-06-14 12:23:58,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:58,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:58,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:58,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:58,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:58,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:58,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 52 transitions, 278 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:58,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:58,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:58,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:58,494 INFO L124 PetriNetUnfolderBase]: 107/239 cut-off events. [2024-06-14 12:23:58,494 INFO L125 PetriNetUnfolderBase]: For 5456/5460 co-relation queries the response was YES. [2024-06-14 12:23:58,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 239 events. 107/239 cut-off events. For 5456/5460 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 889 event pairs, 23 based on Foata normal form. 10/249 useless extension candidates. Maximal degree in co-relation 802. Up to 144 conditions per place. [2024-06-14 12:23:58,495 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 33 selfloop transitions, 19 changer transitions 10/65 dead transitions. [2024-06-14 12:23:58,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 65 transitions, 430 flow [2024-06-14 12:23:58,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:23:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:23:58,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 12:23:58,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-14 12:23:58,495 INFO L175 Difference]: Start difference. First operand has 100 places, 52 transitions, 278 flow. Second operand 12 states and 127 transitions. [2024-06-14 12:23:58,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 65 transitions, 430 flow [2024-06-14 12:23:58,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 65 transitions, 390 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:23:58,499 INFO L231 Difference]: Finished difference. Result has 89 places, 49 transitions, 265 flow [2024-06-14 12:23:58,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=265, PETRI_PLACES=89, PETRI_TRANSITIONS=49} [2024-06-14 12:23:58,499 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-14 12:23:58,499 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 49 transitions, 265 flow [2024-06-14 12:23:58,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:58,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:58,499 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] [2024-06-14 12:23:58,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-14 12:23:58,499 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)] === [2024-06-14 12:23:58,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:58,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1891285837, now seen corresponding path program 24 times [2024-06-14 12:23:58,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:58,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409321770] [2024-06-14 12:23:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:58,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:59,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:59,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409321770] [2024-06-14 12:23:59,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409321770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:59,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:59,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:23:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214680267] [2024-06-14 12:23:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:59,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:23:59,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:23:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:23:59,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:23:59,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 49 transitions, 265 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:59,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:59,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:23:59,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:00,219 INFO L124 PetriNetUnfolderBase]: 100/226 cut-off events. [2024-06-14 12:24:00,219 INFO L125 PetriNetUnfolderBase]: For 3802/3806 co-relation queries the response was YES. [2024-06-14 12:24:00,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 226 events. 100/226 cut-off events. For 3802/3806 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 815 event pairs, 21 based on Foata normal form. 10/236 useless extension candidates. Maximal degree in co-relation 746. Up to 126 conditions per place. [2024-06-14 12:24:00,220 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 30 selfloop transitions, 17 changer transitions 13/63 dead transitions. [2024-06-14 12:24:00,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 63 transitions, 415 flow [2024-06-14 12:24:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:00,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 12:24:00,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-14 12:24:00,221 INFO L175 Difference]: Start difference. First operand has 89 places, 49 transitions, 265 flow. Second operand 12 states and 127 transitions. [2024-06-14 12:24:00,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 63 transitions, 415 flow [2024-06-14 12:24:00,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 63 transitions, 373 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:24:00,224 INFO L231 Difference]: Finished difference. Result has 86 places, 45 transitions, 242 flow [2024-06-14 12:24:00,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=242, PETRI_PLACES=86, PETRI_TRANSITIONS=45} [2024-06-14 12:24:00,225 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-14 12:24:00,225 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 45 transitions, 242 flow [2024-06-14 12:24:00,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:00,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:00,225 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] [2024-06-14 12:24:00,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-14 12:24:00,226 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)] === [2024-06-14 12:24:00,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:00,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1937333065, now seen corresponding path program 25 times [2024-06-14 12:24:00,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:00,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113833929] [2024-06-14 12:24:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:00,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:01,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:01,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113833929] [2024-06-14 12:24:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113833929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:01,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:01,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:24:01,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266005819] [2024-06-14 12:24:01,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:01,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:24:01,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:24:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:24:01,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:24:01,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 45 transitions, 242 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:01,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:01,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:24:01,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:01,949 INFO L124 PetriNetUnfolderBase]: 89/205 cut-off events. [2024-06-14 12:24:01,949 INFO L125 PetriNetUnfolderBase]: For 3494/3494 co-relation queries the response was YES. [2024-06-14 12:24:01,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 205 events. 89/205 cut-off events. For 3494/3494 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 701 event pairs, 8 based on Foata normal form. 6/211 useless extension candidates. Maximal degree in co-relation 680. Up to 54 conditions per place. [2024-06-14 12:24:01,950 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 24 selfloop transitions, 20 changer transitions 13/60 dead transitions. [2024-06-14 12:24:01,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 60 transitions, 388 flow [2024-06-14 12:24:01,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 12:24:01,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 12:24:01,951 INFO L175 Difference]: Start difference. First operand has 86 places, 45 transitions, 242 flow. Second operand 12 states and 126 transitions. [2024-06-14 12:24:01,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 60 transitions, 388 flow [2024-06-14 12:24:01,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 60 transitions, 348 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:24:01,954 INFO L231 Difference]: Finished difference. Result has 81 places, 40 transitions, 224 flow [2024-06-14 12:24:01,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=224, PETRI_PLACES=81, PETRI_TRANSITIONS=40} [2024-06-14 12:24:01,954 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-14 12:24:01,954 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 40 transitions, 224 flow [2024-06-14 12:24:01,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:01,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:01,954 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] [2024-06-14 12:24:01,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-14 12:24:01,954 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)] === [2024-06-14 12:24:01,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:01,955 INFO L85 PathProgramCache]: Analyzing trace with hash -469604407, now seen corresponding path program 26 times [2024-06-14 12:24:01,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:01,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132355489] [2024-06-14 12:24:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:01,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:03,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:03,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132355489] [2024-06-14 12:24:03,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132355489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:03,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:03,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:24:03,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147199180] [2024-06-14 12:24:03,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:03,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:24:03,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:03,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:24:03,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:24:03,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:24:03,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 40 transitions, 224 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:03,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:03,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:24:03,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:03,696 INFO L124 PetriNetUnfolderBase]: 74/174 cut-off events. [2024-06-14 12:24:03,696 INFO L125 PetriNetUnfolderBase]: For 2944/2948 co-relation queries the response was YES. [2024-06-14 12:24:03,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 174 events. 74/174 cut-off events. For 2944/2948 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 557 event pairs, 17 based on Foata normal form. 10/184 useless extension candidates. Maximal degree in co-relation 606. Up to 90 conditions per place. [2024-06-14 12:24:03,697 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 27 selfloop transitions, 13 changer transitions 10/53 dead transitions. [2024-06-14 12:24:03,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 53 transitions, 352 flow [2024-06-14 12:24:03,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:03,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:03,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 12:24:03,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 12:24:03,698 INFO L175 Difference]: Start difference. First operand has 81 places, 40 transitions, 224 flow. Second operand 12 states and 126 transitions. [2024-06-14 12:24:03,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 53 transitions, 352 flow [2024-06-14 12:24:03,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 53 transitions, 304 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:24:03,700 INFO L231 Difference]: Finished difference. Result has 74 places, 37 transitions, 191 flow [2024-06-14 12:24:03,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=191, PETRI_PLACES=74, PETRI_TRANSITIONS=37} [2024-06-14 12:24:03,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-14 12:24:03,700 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 37 transitions, 191 flow [2024-06-14 12:24:03,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:03,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:03,700 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] [2024-06-14 12:24:03,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-14 12:24:03,700 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)] === [2024-06-14 12:24:03,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:03,701 INFO L85 PathProgramCache]: Analyzing trace with hash -680107495, now seen corresponding path program 27 times [2024-06-14 12:24:03,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:03,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015639945] [2024-06-14 12:24:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:03,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:05,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:05,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015639945] [2024-06-14 12:24:05,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015639945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:05,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:05,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:24:05,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87401622] [2024-06-14 12:24:05,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:05,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:24:05,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:24:05,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:24:05,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:24:05,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 37 transitions, 191 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:05,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:05,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:24:05,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:05,386 INFO L124 PetriNetUnfolderBase]: 67/161 cut-off events. [2024-06-14 12:24:05,386 INFO L125 PetriNetUnfolderBase]: For 2194/2194 co-relation queries the response was YES. [2024-06-14 12:24:05,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 161 events. 67/161 cut-off events. For 2194/2194 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 486 event pairs, 15 based on Foata normal form. 6/167 useless extension candidates. Maximal degree in co-relation 528. Up to 72 conditions per place. [2024-06-14 12:24:05,387 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 23 selfloop transitions, 9 changer transitions 16/51 dead transitions. [2024-06-14 12:24:05,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 51 transitions, 317 flow [2024-06-14 12:24:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 12:24:05,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 12:24:05,387 INFO L175 Difference]: Start difference. First operand has 74 places, 37 transitions, 191 flow. Second operand 12 states and 126 transitions. [2024-06-14 12:24:05,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 51 transitions, 317 flow [2024-06-14 12:24:05,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 51 transitions, 285 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:24:05,389 INFO L231 Difference]: Finished difference. Result has 70 places, 31 transitions, 154 flow [2024-06-14 12:24:05,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=154, PETRI_PLACES=70, PETRI_TRANSITIONS=31} [2024-06-14 12:24:05,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-14 12:24:05,389 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 31 transitions, 154 flow [2024-06-14 12:24:05,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:05,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:05,390 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] [2024-06-14 12:24:05,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-14 12:24:05,391 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)] === [2024-06-14 12:24:05,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash 196525529, now seen corresponding path program 28 times [2024-06-14 12:24:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:05,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428909311] [2024-06-14 12:24:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:05,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:06,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:06,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428909311] [2024-06-14 12:24:06,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428909311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:06,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:06,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:24:06,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105603009] [2024-06-14 12:24:06,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:06,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:24:06,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:06,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:24:06,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:24:06,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:24:06,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 31 transitions, 154 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:06,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:06,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:24:06,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:07,131 INFO L124 PetriNetUnfolderBase]: 54/132 cut-off events. [2024-06-14 12:24:07,131 INFO L125 PetriNetUnfolderBase]: For 1756/1760 co-relation queries the response was YES. [2024-06-14 12:24:07,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 132 events. 54/132 cut-off events. For 1756/1760 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 362 event pairs, 15 based on Foata normal form. 10/142 useless extension candidates. Maximal degree in co-relation 434. Up to 62 conditions per place. [2024-06-14 12:24:07,132 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 20 selfloop transitions, 11 changer transitions 10/44 dead transitions. [2024-06-14 12:24:07,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 44 transitions, 264 flow [2024-06-14 12:24:07,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:07,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-14 12:24:07,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-14 12:24:07,133 INFO L175 Difference]: Start difference. First operand has 70 places, 31 transitions, 154 flow. Second operand 12 states and 122 transitions. [2024-06-14 12:24:07,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 44 transitions, 264 flow [2024-06-14 12:24:07,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 44 transitions, 236 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:24:07,134 INFO L231 Difference]: Finished difference. Result has 61 places, 28 transitions, 137 flow [2024-06-14 12:24:07,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=137, PETRI_PLACES=61, PETRI_TRANSITIONS=28} [2024-06-14 12:24:07,135 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-14 12:24:07,135 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 28 transitions, 137 flow [2024-06-14 12:24:07,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:07,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:07,135 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] [2024-06-14 12:24:07,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-14 12:24:07,136 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)] === [2024-06-14 12:24:07,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:07,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1921612783, now seen corresponding path program 29 times [2024-06-14 12:24:07,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:07,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70774748] [2024-06-14 12:24:07,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:07,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:08,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:08,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70774748] [2024-06-14 12:24:08,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70774748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:08,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:08,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:24:08,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221819092] [2024-06-14 12:24:08,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:08,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:24:08,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:08,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:24:08,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:24:08,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:24:08,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 28 transitions, 137 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:08,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:08,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:24:08,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:08,766 INFO L124 PetriNetUnfolderBase]: 47/119 cut-off events. [2024-06-14 12:24:08,766 INFO L125 PetriNetUnfolderBase]: For 1028/1028 co-relation queries the response was YES. [2024-06-14 12:24:08,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 119 events. 47/119 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 298 event pairs, 4 based on Foata normal form. 6/125 useless extension candidates. Maximal degree in co-relation 378. Up to 38 conditions per place. [2024-06-14 12:24:08,766 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 19 selfloop transitions, 9 changer transitions 11/42 dead transitions. [2024-06-14 12:24:08,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 42 transitions, 245 flow [2024-06-14 12:24:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-14 12:24:08,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-14 12:24:08,767 INFO L175 Difference]: Start difference. First operand has 61 places, 28 transitions, 137 flow. Second operand 12 states and 121 transitions. [2024-06-14 12:24:08,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 42 transitions, 245 flow [2024-06-14 12:24:08,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 42 transitions, 217 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:24:08,768 INFO L231 Difference]: Finished difference. Result has 57 places, 23 transitions, 108 flow [2024-06-14 12:24:08,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=108, PETRI_PLACES=57, PETRI_TRANSITIONS=23} [2024-06-14 12:24:08,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-14 12:24:08,769 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 23 transitions, 108 flow [2024-06-14 12:24:08,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:08,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:08,769 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] [2024-06-14 12:24:08,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-14 12:24:08,769 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)] === [2024-06-14 12:24:08,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:08,769 INFO L85 PathProgramCache]: Analyzing trace with hash -478761305, now seen corresponding path program 30 times [2024-06-14 12:24:08,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:08,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050193644] [2024-06-14 12:24:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:08,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:10,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050193644] [2024-06-14 12:24:10,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050193644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:10,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:10,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:24:10,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452077810] [2024-06-14 12:24:10,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:10,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:24:10,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:10,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:24:10,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:24:10,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:24:10,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 23 transitions, 108 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:10,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:10,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:24:10,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:10,448 INFO L124 PetriNetUnfolderBase]: 20/60 cut-off events. [2024-06-14 12:24:10,448 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2024-06-14 12:24:10,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 60 events. 20/60 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 6/66 useless extension candidates. Maximal degree in co-relation 160. Up to 24 conditions per place. [2024-06-14 12:24:10,449 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-14 12:24:10,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 31 transitions, 158 flow [2024-06-14 12:24:10,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:24:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:24:10,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-14 12:24:10,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-14 12:24:10,450 INFO L175 Difference]: Start difference. First operand has 57 places, 23 transitions, 108 flow. Second operand 12 states and 113 transitions. [2024-06-14 12:24:10,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 31 transitions, 158 flow [2024-06-14 12:24:10,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 124 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-14 12:24:10,450 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-14 12:24:10,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=12, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-14 12:24:10,451 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-14 12:24:10,451 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-14 12:24:10,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:24:10,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:24:10,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:24:10,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:24:10,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:24:10,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-14 12:24:10,455 INFO L445 BasicCegarLoop]: Path program histogram: [37, 30, 29, 21, 20, 13, 7, 6, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:10,458 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:24:10,458 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:24:10,462 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:24:10,462 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:24:10,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:24:10 BasicIcfg [2024-06-14 12:24:10,463 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:24:10,463 INFO L158 Benchmark]: Toolchain (without parser) took 338553.19ms. Allocated memory was 172.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 111.2MB in the beginning and 987.0MB in the end (delta: -875.9MB). Peak memory consumption was 144.4MB. Max. memory is 16.1GB. [2024-06-14 12:24:10,463 INFO L158 Benchmark]: Witness Parser took 0.25ms. Allocated memory is still 172.0MB. Free memory was 137.1MB in the beginning and 136.9MB in the end (delta: 234.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:24:10,464 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:24:10,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 694.83ms. Allocated memory is still 172.0MB. Free memory was 111.2MB in the beginning and 78.3MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-14 12:24:10,464 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.27ms. Allocated memory is still 172.0MB. Free memory was 78.3MB in the beginning and 75.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:24:10,464 INFO L158 Benchmark]: Boogie Preprocessor took 59.34ms. Allocated memory is still 172.0MB. Free memory was 75.5MB in the beginning and 72.0MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 12:24:10,465 INFO L158 Benchmark]: RCFGBuilder took 711.91ms. Allocated memory is still 172.0MB. Free memory was 72.0MB in the beginning and 113.9MB in the end (delta: -42.0MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2024-06-14 12:24:10,465 INFO L158 Benchmark]: TraceAbstraction took 337032.30ms. Allocated memory was 172.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 113.0MB in the beginning and 987.0MB in the end (delta: -874.0MB). Peak memory consumption was 143.9MB. Max. memory is 16.1GB. [2024-06-14 12:24:10,466 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.25ms. Allocated memory is still 172.0MB. Free memory was 137.1MB in the beginning and 136.9MB in the end (delta: 234.9kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 694.83ms. Allocated memory is still 172.0MB. Free memory was 111.2MB in the beginning and 78.3MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.27ms. Allocated memory is still 172.0MB. Free memory was 78.3MB in the beginning and 75.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.34ms. Allocated memory is still 172.0MB. Free memory was 75.5MB in the beginning and 72.0MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 711.91ms. Allocated memory is still 172.0MB. Free memory was 72.0MB in the beginning and 113.9MB in the end (delta: -42.0MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. * TraceAbstraction took 337032.30ms. Allocated memory was 172.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 113.0MB in the beginning and 987.0MB in the end (delta: -874.0MB). Peak memory consumption was 143.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 816]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 817]: 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: 336.9s, OverallIterations: 194, TraceHistogramMax: 1, PathProgramHistogramMax: 37, EmptinessCheckTime: 0.0s, AutomataDifference: 131.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13537 SdHoareTripleChecker+Valid, 51.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11467 mSDsluCounter, 7950 SdHoareTripleChecker+Invalid, 44.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7272 mSDsCounter, 2400 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82467 IncrementalHoareTripleChecker+Invalid, 84867 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2400 mSolverCounterUnsat, 678 mSDtfsCounter, 82467 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2350 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5870 ImplicationChecksByTransitivity, 79.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2565occurred in iteration=93, InterpolantAutomatonStates: 2056, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 203.0s InterpolantComputationTime, 3480 NumberOfCodeBlocks, 3480 NumberOfCodeBlocksAsserted, 194 NumberOfCheckSat, 3286 ConstructedInterpolants, 0 QuantifiedInterpolants, 156256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 194 InterpolantComputations, 194 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 12:24:10,507 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