./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.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/mix022_tso.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/mix022_tso.i ./goblint.2024-05-21_14-57-05.files/protection/mix022_tso.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 12:08:49,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:08:49,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:08:49,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:08:49,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:08:49,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:08:49,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:08:49,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:08:49,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:08:49,756 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:08:49,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:08:49,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:08:49,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:08:49,759 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:08:49,759 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:08:49,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:08:49,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:08:49,760 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:08:49,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:08:49,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:08:49,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:08:49,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:08:49,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:08:49,762 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:08:49,762 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:08:49,762 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:08:49,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:08:49,763 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:08:49,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:08:49,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:08:49,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:08:49,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:08:49,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:08:49,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:08:49,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:08:49,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:08:49,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:08:49,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:08:49,767 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:08:49,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:08:49,767 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:08:49,767 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:08:49,767 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:08:49,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:08:50,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:08:50,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:08:50,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:08:50,055 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:08:50,056 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:08:50,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix022_tso.yml/witness.yml [2024-06-14 12:08:50,210 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:08:50,210 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:08:50,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-14 12:08:51,407 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:08:51,695 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:08:51,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-14 12:08:51,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60de35ff5/13630b4b5a1b423db97e8eac728f90ae/FLAG588c060d5 [2024-06-14 12:08:51,736 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60de35ff5/13630b4b5a1b423db97e8eac728f90ae [2024-06-14 12:08:51,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:08:51,737 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:08:51,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:08:51,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:08:51,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:08:51,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:08:50" (1/2) ... [2024-06-14 12:08:51,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50de6a59 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:51, skipping insertion in model container [2024-06-14 12:08:51,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:08:50" (1/2) ... [2024-06-14 12:08:51,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@70f2cd30 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:51, skipping insertion in model container [2024-06-14 12:08:51,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:08:51" (2/2) ... [2024-06-14 12:08:51,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50de6a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:51, skipping insertion in model container [2024-06-14 12:08:51,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:08:51" (2/2) ... [2024-06-14 12:08:51,749 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:08:51,807 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:08:51,808 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) [2024-06-14 12:08:51,808 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) [2024-06-14 12:08:51,809 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:08:51,809 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-14 12:08:51,849 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:08:52,258 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:08:52,273 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:08:52,380 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:08:52,424 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:08:52,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52 WrapperNode [2024-06-14 12:08:52,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:08:52,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:08:52,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:08:52,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:08:52,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (1/1) ... [2024-06-14 12:08:52,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (1/1) ... [2024-06-14 12:08:52,506 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2024-06-14 12:08:52,507 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:08:52,508 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:08:52,508 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:08:52,508 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:08:52,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (1/1) ... [2024-06-14 12:08:52,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (1/1) ... [2024-06-14 12:08:52,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (1/1) ... [2024-06-14 12:08:52,551 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 12:08:52,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (1/1) ... [2024-06-14 12:08:52,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (1/1) ... [2024-06-14 12:08:52,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (1/1) ... [2024-06-14 12:08:52,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (1/1) ... [2024-06-14 12:08:52,585 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (1/1) ... [2024-06-14 12:08:52,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (1/1) ... [2024-06-14 12:08:52,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:08:52,597 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:08:52,597 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:08:52,597 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:08:52,598 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (1/1) ... [2024-06-14 12:08:52,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:08:52,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:08:52,629 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 12:08:52,653 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 12:08:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:08:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:08:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:08:52,716 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:08:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:08:52,716 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:08:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:08:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:08:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:08:52,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:08:52,718 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 12:08:52,869 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:08:52,870 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:08:53,182 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:08:53,182 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:08:53,339 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:08:53,339 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:08:53,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:08:53 BoogieIcfgContainer [2024-06-14 12:08:53,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:08:53,344 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:08:53,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:08:53,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:08:53,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:08:50" (1/4) ... [2024-06-14 12:08:53,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c567e2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:08:53, skipping insertion in model container [2024-06-14 12:08:53,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:08:51" (2/4) ... [2024-06-14 12:08:53,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c567e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:08:53, skipping insertion in model container [2024-06-14 12:08:53,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:52" (3/4) ... [2024-06-14 12:08:53,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c567e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:08:53, skipping insertion in model container [2024-06-14 12:08:53,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:08:53" (4/4) ... [2024-06-14 12:08:53,358 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_tso.i [2024-06-14 12:08:53,376 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:08:53,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:08:53,376 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:08:53,425 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:08:53,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 12:08:53,483 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-14 12:08:53,483 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:08:53,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:08:53,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 12:08:53,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-14 12:08:53,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:08:53,537 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;@4bdfa409, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:08:53,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:08:53,542 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:08:53,542 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:08:53,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:08:53,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:53,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:08:53,544 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 12:08:53,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:53,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1606705191, now seen corresponding path program 1 times [2024-06-14 12:08:53,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:53,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126543651] [2024-06-14 12:08:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:53,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:54,623 INFO 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 12:08:54,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:54,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126543651] [2024-06-14 12:08:54,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126543651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:54,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:54,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:08:54,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425906243] [2024-06-14 12:08:54,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:54,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:08:54,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:54,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:08:54,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:08:54,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:08:54,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:54,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:54,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:08:54,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:54,875 INFO L124 PetriNetUnfolderBase]: 162/309 cut-off events. [2024-06-14 12:08:54,876 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 12:08:54,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 309 events. 162/309 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1128 event pairs, 97 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 608. Up to 288 conditions per place. [2024-06-14 12:08:54,882 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-14 12:08:54,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-14 12:08:54,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:08:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:08:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-14 12:08:54,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-06-14 12:08:54,896 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 49 transitions. [2024-06-14 12:08:54,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-14 12:08:54,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:08:54,900 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-14 12:08:54,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-14 12:08:54,905 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-14 12:08:54,905 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-14 12:08:54,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:54,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:54,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:54,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:08:54,907 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 12:08:54,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:54,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2144571448, now seen corresponding path program 1 times [2024-06-14 12:08:54,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:54,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604638568] [2024-06-14 12:08:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:54,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:55,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:55,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604638568] [2024-06-14 12:08:55,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604638568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:55,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:55,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:08:55,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412335353] [2024-06-14 12:08:55,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:55,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:08:55,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:08:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:08:55,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:55,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:55,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:55,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:55,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:55,727 INFO L124 PetriNetUnfolderBase]: 186/337 cut-off events. [2024-06-14 12:08:55,727 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-14 12:08:55,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 337 events. 186/337 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1172 event pairs, 94 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 766. Up to 319 conditions per place. [2024-06-14 12:08:55,733 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 28 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-14 12:08:55,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 163 flow [2024-06-14 12:08:55,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:08:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:08:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-06-14 12:08:55,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2024-06-14 12:08:55,735 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 59 transitions. [2024-06-14 12:08:55,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 163 flow [2024-06-14 12:08:55,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:08:55,737 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-14 12:08:55,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-14 12:08:55,738 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-14 12:08:55,738 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-14 12:08:55,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:55,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:55,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:55,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:08:55,739 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 12:08:55,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:55,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2057206554, now seen corresponding path program 1 times [2024-06-14 12:08:55,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:55,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178168885] [2024-06-14 12:08:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:55,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:56,398 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 12:08:56,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:56,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178168885] [2024-06-14 12:08:56,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178168885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:56,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:56,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:08:56,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689182192] [2024-06-14 12:08:56,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:56,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:08:56,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:56,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:08:56,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:08:56,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:56,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:56,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:56,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:56,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:56,571 INFO L124 PetriNetUnfolderBase]: 180/327 cut-off events. [2024-06-14 12:08:56,572 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-14 12:08:56,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 327 events. 180/327 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1119 event pairs, 52 based on Foata normal form. 4/330 useless extension candidates. Maximal degree in co-relation 822. Up to 291 conditions per place. [2024-06-14 12:08:56,574 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-14 12:08:56,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 215 flow [2024-06-14 12:08:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:08:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:08:56,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-06-14 12:08:56,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2024-06-14 12:08:56,576 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 72 transitions. [2024-06-14 12:08:56,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 215 flow [2024-06-14 12:08:56,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 206 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:08:56,579 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-14 12:08:56,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-14 12:08:56,579 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-14 12:08:56,580 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-14 12:08:56,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:56,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:56,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:56,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:08:56,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:56,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:56,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1290578649, now seen corresponding path program 1 times [2024-06-14 12:08:56,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:56,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096062606] [2024-06-14 12:08:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:56,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:57,700 INFO 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 12:08:57,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:57,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096062606] [2024-06-14 12:08:57,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096062606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:57,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:57,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:08:57,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425627265] [2024-06-14 12:08:57,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:57,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:08:57,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:57,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:08:57,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:08:57,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:57,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:57,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:57,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:57,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:57,964 INFO L124 PetriNetUnfolderBase]: 176/319 cut-off events. [2024-06-14 12:08:57,965 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-14 12:08:57,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 319 events. 176/319 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1082 event pairs, 30 based on Foata normal form. 4/322 useless extension candidates. Maximal degree in co-relation 873. Up to 265 conditions per place. [2024-06-14 12:08:57,967 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-14 12:08:57,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 229 flow [2024-06-14 12:08:57,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:08:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:08:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-06-14 12:08:57,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42473118279569894 [2024-06-14 12:08:57,970 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 79 transitions. [2024-06-14 12:08:57,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 229 flow [2024-06-14 12:08:57,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 214 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 12:08:57,972 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-14 12:08:57,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-14 12:08:57,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-14 12:08:57,973 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-14 12:08:57,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:57,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:57,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:57,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:08:57,974 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 12:08:57,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:57,975 INFO L85 PathProgramCache]: Analyzing trace with hash 672537551, now seen corresponding path program 1 times [2024-06-14 12:08:57,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:57,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852219805] [2024-06-14 12:08:57,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:57,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:58,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:58,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852219805] [2024-06-14 12:08:58,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852219805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:58,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:58,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:08:58,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465514590] [2024-06-14 12:08:58,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:58,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:08:58,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:08:58,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:08:58,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:58,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:58,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:58,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:58,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:58,807 INFO L124 PetriNetUnfolderBase]: 147/283 cut-off events. [2024-06-14 12:08:58,807 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-14 12:08:58,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 283 events. 147/283 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 985 event pairs, 53 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 792. Up to 259 conditions per place. [2024-06-14 12:08:58,809 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-14 12:08:58,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 198 flow [2024-06-14 12:08:58,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:08:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:08:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-06-14 12:08:58,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:08:58,814 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 5 states and 59 transitions. [2024-06-14 12:08:58,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 198 flow [2024-06-14 12:08:58,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 178 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 12:08:58,817 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 123 flow [2024-06-14 12:08:58,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-14 12:08:58,818 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-14 12:08:58,819 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 123 flow [2024-06-14 12:08:58,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:58,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:58,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:58,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:08:58,820 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 12:08:58,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:58,820 INFO L85 PathProgramCache]: Analyzing trace with hash -616340437, now seen corresponding path program 1 times [2024-06-14 12:08:58,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:58,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608605914] [2024-06-14 12:08:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:58,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:59,911 INFO 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 12:08:59,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608605914] [2024-06-14 12:08:59,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608605914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:59,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:59,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:08:59,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566677374] [2024-06-14 12:08:59,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:59,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:08:59,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:59,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:08:59,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:08:59,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:59,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:59,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:59,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:59,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:00,136 INFO L124 PetriNetUnfolderBase]: 143/277 cut-off events. [2024-06-14 12:09:00,137 INFO L125 PetriNetUnfolderBase]: For 474/474 co-relation queries the response was YES. [2024-06-14 12:09:00,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 277 events. 143/277 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 956 event pairs, 51 based on Foata normal form. 2/278 useless extension candidates. Maximal degree in co-relation 803. Up to 247 conditions per place. [2024-06-14 12:09:00,140 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 28 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-14 12:09:00,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 219 flow [2024-06-14 12:09:00,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:09:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:09:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-14 12:09:00,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:09:00,143 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 123 flow. Second operand 6 states and 69 transitions. [2024-06-14 12:09:00,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 219 flow [2024-06-14 12:09:00,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 208 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:09:00,147 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 145 flow [2024-06-14 12:09:00,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-14 12:09:00,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-14 12:09:00,150 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 145 flow [2024-06-14 12:09:00,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:00,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:00,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:00,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:09:00,151 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 12:09:00,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:00,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1661963166, now seen corresponding path program 1 times [2024-06-14 12:09:00,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:00,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090397824] [2024-06-14 12:09:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:00,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:00,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090397824] [2024-06-14 12:09:00,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090397824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:00,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:00,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:09:00,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83647635] [2024-06-14 12:09:00,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:00,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:09:00,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:00,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:09:00,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:09:00,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:00,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:00,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:00,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:00,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:01,094 INFO L124 PetriNetUnfolderBase]: 171/312 cut-off events. [2024-06-14 12:09:01,095 INFO L125 PetriNetUnfolderBase]: For 716/716 co-relation queries the response was YES. [2024-06-14 12:09:01,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1015 conditions, 312 events. 171/312 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1032 event pairs, 61 based on Foata normal form. 1/312 useless extension candidates. Maximal degree in co-relation 993. Up to 291 conditions per place. [2024-06-14 12:09:01,097 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-14 12:09:01,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 257 flow [2024-06-14 12:09:01,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:09:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:09:01,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-06-14 12:09:01,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:09:01,099 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 145 flow. Second operand 6 states and 66 transitions. [2024-06-14 12:09:01,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 257 flow [2024-06-14 12:09:01,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 240 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:09:01,101 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 161 flow [2024-06-14 12:09:01,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-14 12:09:01,102 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-14 12:09:01,102 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 161 flow [2024-06-14 12:09:01,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:01,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:01,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:01,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:09:01,103 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 12:09:01,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:01,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2063514030, now seen corresponding path program 2 times [2024-06-14 12:09:01,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:01,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138705867] [2024-06-14 12:09:01,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:01,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:01,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:01,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138705867] [2024-06-14 12:09:01,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138705867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:01,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:01,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:09:01,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306678378] [2024-06-14 12:09:01,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:01,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:09:01,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:01,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:09:01,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:09:01,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:01,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:01,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:01,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:01,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:01,985 INFO L124 PetriNetUnfolderBase]: 169/310 cut-off events. [2024-06-14 12:09:01,985 INFO L125 PetriNetUnfolderBase]: For 927/930 co-relation queries the response was YES. [2024-06-14 12:09:01,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 310 events. 169/310 cut-off events. For 927/930 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1031 event pairs, 65 based on Foata normal form. 3/311 useless extension candidates. Maximal degree in co-relation 1035. Up to 282 conditions per place. [2024-06-14 12:09:01,987 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 29 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2024-06-14 12:09:01,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 267 flow [2024-06-14 12:09:01,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:09:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:09:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-14 12:09:01,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-14 12:09:01,989 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 161 flow. Second operand 6 states and 65 transitions. [2024-06-14 12:09:01,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 267 flow [2024-06-14 12:09:01,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 250 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:09:01,991 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 187 flow [2024-06-14 12:09:01,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-14 12:09:01,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-14 12:09:01,992 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 187 flow [2024-06-14 12:09:01,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:01,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:01,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:01,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:09:01,993 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 12:09:01,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1214428462, now seen corresponding path program 1 times [2024-06-14 12:09:01,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:01,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756745290] [2024-06-14 12:09:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:01,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:02,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:02,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756745290] [2024-06-14 12:09:02,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756745290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:02,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:02,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:09:02,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933788393] [2024-06-14 12:09:02,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:02,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:09:02,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:02,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:09:02,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:09:02,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:02,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 187 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:02,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:02,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:02,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:03,025 INFO L124 PetriNetUnfolderBase]: 191/350 cut-off events. [2024-06-14 12:09:03,025 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2024-06-14 12:09:03,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 350 events. 191/350 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1219 event pairs, 43 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 1225. Up to 288 conditions per place. [2024-06-14 12:09:03,028 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 42 selfloop transitions, 16 changer transitions 0/60 dead transitions. [2024-06-14 12:09:03,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 387 flow [2024-06-14 12:09:03,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 12:09:03,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-14 12:09:03,029 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 187 flow. Second operand 8 states and 89 transitions. [2024-06-14 12:09:03,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 387 flow [2024-06-14 12:09:03,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 356 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:09:03,032 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 263 flow [2024-06-14 12:09:03,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=263, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-14 12:09:03,033 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-14 12:09:03,033 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 263 flow [2024-06-14 12:09:03,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:03,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:03,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:03,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:09:03,034 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 12:09:03,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:03,034 INFO L85 PathProgramCache]: Analyzing trace with hash -632825254, now seen corresponding path program 2 times [2024-06-14 12:09:03,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:03,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740343451] [2024-06-14 12:09:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:03,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:03,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:03,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740343451] [2024-06-14 12:09:03,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740343451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:03,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:03,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:09:03,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280836847] [2024-06-14 12:09:03,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:03,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:09:03,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:03,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:09:03,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:09:03,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:03,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 263 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:03,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:03,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:03,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:04,011 INFO L124 PetriNetUnfolderBase]: 197/360 cut-off events. [2024-06-14 12:09:04,012 INFO L125 PetriNetUnfolderBase]: For 1681/1681 co-relation queries the response was YES. [2024-06-14 12:09:04,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 360 events. 197/360 cut-off events. For 1681/1681 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1256 event pairs, 42 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 1413. Up to 290 conditions per place. [2024-06-14 12:09:04,015 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 21 changer transitions 0/63 dead transitions. [2024-06-14 12:09:04,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 459 flow [2024-06-14 12:09:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:09:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:09:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 12:09:04,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-14 12:09:04,017 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 263 flow. Second operand 7 states and 79 transitions. [2024-06-14 12:09:04,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 459 flow [2024-06-14 12:09:04,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 434 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 12:09:04,021 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 336 flow [2024-06-14 12:09:04,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=336, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-06-14 12:09:04,022 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-14 12:09:04,022 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 336 flow [2024-06-14 12:09:04,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:04,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:04,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:04,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:09:04,023 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 12:09:04,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:04,023 INFO L85 PathProgramCache]: Analyzing trace with hash 395682570, now seen corresponding path program 1 times [2024-06-14 12:09:04,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:04,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935205018] [2024-06-14 12:09:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:04,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:04,956 INFO 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 12:09:04,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:04,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935205018] [2024-06-14 12:09:04,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935205018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:04,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:04,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:09:04,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986272951] [2024-06-14 12:09:04,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:04,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:09:04,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:09:04,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:09:05,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:05,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 336 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:05,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:05,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:05,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:05,198 INFO L124 PetriNetUnfolderBase]: 200/365 cut-off events. [2024-06-14 12:09:05,198 INFO L125 PetriNetUnfolderBase]: For 2098/2098 co-relation queries the response was YES. [2024-06-14 12:09:05,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 365 events. 200/365 cut-off events. For 2098/2098 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1277 event pairs, 44 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1559. Up to 334 conditions per place. [2024-06-14 12:09:05,201 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 48 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-06-14 12:09:05,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 496 flow [2024-06-14 12:09:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:09:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:09:05,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-14 12:09:05,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-14 12:09:05,203 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 336 flow. Second operand 7 states and 74 transitions. [2024-06-14 12:09:05,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 496 flow [2024-06-14 12:09:05,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 463 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 12:09:05,208 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 346 flow [2024-06-14 12:09:05,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-14 12:09:05,208 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-14 12:09:05,209 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 346 flow [2024-06-14 12:09:05,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:05,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:05,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:05,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:09:05,210 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 12:09:05,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:05,210 INFO L85 PathProgramCache]: Analyzing trace with hash -632705284, now seen corresponding path program 3 times [2024-06-14 12:09:05,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:05,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954132642] [2024-06-14 12:09:05,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:05,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:05,898 INFO 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 12:09:05,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:05,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954132642] [2024-06-14 12:09:05,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954132642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:05,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:05,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:09:05,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29528978] [2024-06-14 12:09:05,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:05,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:09:05,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:05,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:09:05,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:09:05,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:05,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 346 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:05,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:05,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:05,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:06,152 INFO L124 PetriNetUnfolderBase]: 211/383 cut-off events. [2024-06-14 12:09:06,152 INFO L125 PetriNetUnfolderBase]: For 2205/2205 co-relation queries the response was YES. [2024-06-14 12:09:06,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 383 events. 211/383 cut-off events. For 2205/2205 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1357 event pairs, 46 based on Foata normal form. 2/384 useless extension candidates. Maximal degree in co-relation 1612. Up to 296 conditions per place. [2024-06-14 12:09:06,155 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 43 selfloop transitions, 23 changer transitions 0/68 dead transitions. [2024-06-14 12:09:06,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 564 flow [2024-06-14 12:09:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:09:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:09:06,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-14 12:09:06,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-14 12:09:06,161 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 346 flow. Second operand 7 states and 80 transitions. [2024-06-14 12:09:06,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 564 flow [2024-06-14 12:09:06,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 537 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 12:09:06,168 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 406 flow [2024-06-14 12:09:06,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-06-14 12:09:06,170 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-14 12:09:06,170 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 406 flow [2024-06-14 12:09:06,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:06,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:06,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:06,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:09:06,171 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 12:09:06,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:06,171 INFO L85 PathProgramCache]: Analyzing trace with hash 402348810, now seen corresponding path program 2 times [2024-06-14 12:09:06,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:06,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327629550] [2024-06-14 12:09:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:06,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:07,208 INFO 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 12:09:07,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:07,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327629550] [2024-06-14 12:09:07,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327629550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:07,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:07,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:09:07,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593209709] [2024-06-14 12:09:07,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:07,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:09:07,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:09:07,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:09:07,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:07,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 406 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:07,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:07,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:07,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:07,418 INFO L124 PetriNetUnfolderBase]: 214/389 cut-off events. [2024-06-14 12:09:07,418 INFO L125 PetriNetUnfolderBase]: For 2713/2719 co-relation queries the response was YES. [2024-06-14 12:09:07,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 389 events. 214/389 cut-off events. For 2713/2719 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1389 event pairs, 48 based on Foata normal form. 5/391 useless extension candidates. Maximal degree in co-relation 1727. Up to 341 conditions per place. [2024-06-14 12:09:07,422 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 49 selfloop transitions, 19 changer transitions 0/70 dead transitions. [2024-06-14 12:09:07,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 622 flow [2024-06-14 12:09:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:09:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:09:07,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-14 12:09:07,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456221198156682 [2024-06-14 12:09:07,423 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 406 flow. Second operand 7 states and 75 transitions. [2024-06-14 12:09:07,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 622 flow [2024-06-14 12:09:07,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 595 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 12:09:07,429 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 468 flow [2024-06-14 12:09:07,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-06-14 12:09:07,429 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-14 12:09:07,430 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 468 flow [2024-06-14 12:09:07,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:07,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:07,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:07,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:09:07,430 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 12:09:07,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash 328153898, now seen corresponding path program 3 times [2024-06-14 12:09:07,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:07,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792917340] [2024-06-14 12:09:07,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:07,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:08,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:08,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792917340] [2024-06-14 12:09:08,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792917340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:08,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:08,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:09:08,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160103839] [2024-06-14 12:09:08,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:08,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:09:08,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:09:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:09:08,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:08,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 468 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:08,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:08,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:08,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:08,643 INFO L124 PetriNetUnfolderBase]: 212/386 cut-off events. [2024-06-14 12:09:08,643 INFO L125 PetriNetUnfolderBase]: For 2992/2998 co-relation queries the response was YES. [2024-06-14 12:09:08,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 386 events. 212/386 cut-off events. For 2992/2998 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1380 event pairs, 48 based on Foata normal form. 5/388 useless extension candidates. Maximal degree in co-relation 1795. Up to 348 conditions per place. [2024-06-14 12:09:08,646 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 53 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2024-06-14 12:09:08,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 635 flow [2024-06-14 12:09:08,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:09:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:09:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-14 12:09:08,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33640552995391704 [2024-06-14 12:09:08,648 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 468 flow. Second operand 7 states and 73 transitions. [2024-06-14 12:09:08,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 635 flow [2024-06-14 12:09:08,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 603 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 12:09:08,655 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 480 flow [2024-06-14 12:09:08,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-06-14 12:09:08,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-14 12:09:08,656 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 480 flow [2024-06-14 12:09:08,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:08,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:08,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:08,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:09:08,657 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 12:09:08,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:08,658 INFO L85 PathProgramCache]: Analyzing trace with hash 23391782, now seen corresponding path program 4 times [2024-06-14 12:09:08,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:08,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965219305] [2024-06-14 12:09:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:08,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:09,354 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 12:09:09,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:09,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965219305] [2024-06-14 12:09:09,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965219305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:09,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:09,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:09:09,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412837300] [2024-06-14 12:09:09,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:09,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:09:09,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:09:09,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:09:09,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:09,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 480 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:09,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:09,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:09,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:09,625 INFO L124 PetriNetUnfolderBase]: 208/380 cut-off events. [2024-06-14 12:09:09,626 INFO L125 PetriNetUnfolderBase]: For 3307/3313 co-relation queries the response was YES. [2024-06-14 12:09:09,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 380 events. 208/380 cut-off events. For 3307/3313 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1368 event pairs, 50 based on Foata normal form. 2/377 useless extension candidates. Maximal degree in co-relation 1788. Up to 280 conditions per place. [2024-06-14 12:09:09,629 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 45 selfloop transitions, 27 changer transitions 0/74 dead transitions. [2024-06-14 12:09:09,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 698 flow [2024-06-14 12:09:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:09:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:09:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 12:09:09,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-14 12:09:09,631 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 480 flow. Second operand 7 states and 79 transitions. [2024-06-14 12:09:09,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 698 flow [2024-06-14 12:09:09,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 667 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 12:09:09,641 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 532 flow [2024-06-14 12:09:09,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=532, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-14 12:09:09,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-14 12:09:09,643 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 532 flow [2024-06-14 12:09:09,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:09,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:09,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:09,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:09:09,643 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 12:09:09,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1111554519, now seen corresponding path program 1 times [2024-06-14 12:09:09,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:09,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513238606] [2024-06-14 12:09:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:09,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:10,581 INFO 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 12:09:10,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:10,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513238606] [2024-06-14 12:09:10,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513238606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:10,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:10,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:10,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873399380] [2024-06-14 12:09:10,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:10,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:10,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:10,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:10,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:10,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:10,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 532 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:10,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:10,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:10,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:10,903 INFO L124 PetriNetUnfolderBase]: 206/376 cut-off events. [2024-06-14 12:09:10,904 INFO L125 PetriNetUnfolderBase]: For 3523/3523 co-relation queries the response was YES. [2024-06-14 12:09:10,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 376 events. 206/376 cut-off events. For 3523/3523 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1343 event pairs, 43 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1845. Up to 301 conditions per place. [2024-06-14 12:09:10,907 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 54 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2024-06-14 12:09:10,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 77 transitions, 722 flow [2024-06-14 12:09:10,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:09:10,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:09:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 12:09:10,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-14 12:09:10,909 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 532 flow. Second operand 7 states and 79 transitions. [2024-06-14 12:09:10,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 77 transitions, 722 flow [2024-06-14 12:09:10,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 77 transitions, 649 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 12:09:10,917 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 514 flow [2024-06-14 12:09:10,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=514, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-06-14 12:09:10,918 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-14 12:09:10,919 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 514 flow [2024-06-14 12:09:10,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:10,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:10,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:10,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:09:10,921 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 12:09:10,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:10,922 INFO L85 PathProgramCache]: Analyzing trace with hash 577536574, now seen corresponding path program 1 times [2024-06-14 12:09:10,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:10,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731984570] [2024-06-14 12:09:10,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:10,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:11,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731984570] [2024-06-14 12:09:11,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731984570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:11,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:11,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:11,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995848808] [2024-06-14 12:09:11,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:11,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:11,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:11,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:11,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:11,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:11,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 514 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:11,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:11,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:11,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:12,031 INFO L124 PetriNetUnfolderBase]: 218/396 cut-off events. [2024-06-14 12:09:12,031 INFO L125 PetriNetUnfolderBase]: For 4041/4041 co-relation queries the response was YES. [2024-06-14 12:09:12,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1979 conditions, 396 events. 218/396 cut-off events. For 4041/4041 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1446 event pairs, 45 based on Foata normal form. 2/394 useless extension candidates. Maximal degree in co-relation 1940. Up to 326 conditions per place. [2024-06-14 12:09:12,035 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 61 selfloop transitions, 22 changer transitions 0/85 dead transitions. [2024-06-14 12:09:12,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 805 flow [2024-06-14 12:09:12,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:09:12,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:09:12,037 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 514 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:09:12,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 805 flow [2024-06-14 12:09:12,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 747 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 12:09:12,044 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 632 flow [2024-06-14 12:09:12,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=632, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-14 12:09:12,045 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-14 12:09:12,045 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 632 flow [2024-06-14 12:09:12,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:12,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:12,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:12,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:09:12,046 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 12:09:12,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:12,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1456416758, now seen corresponding path program 2 times [2024-06-14 12:09:12,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:12,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075234157] [2024-06-14 12:09:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:12,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:12,947 INFO 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 12:09:12,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:12,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075234157] [2024-06-14 12:09:12,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075234157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:12,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:12,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:12,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173038394] [2024-06-14 12:09:12,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:12,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:12,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:12,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:12,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:13,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:13,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 632 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:13,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:13,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:13,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:13,248 INFO L124 PetriNetUnfolderBase]: 224/406 cut-off events. [2024-06-14 12:09:13,248 INFO L125 PetriNetUnfolderBase]: For 4556/4556 co-relation queries the response was YES. [2024-06-14 12:09:13,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 406 events. 224/406 cut-off events. For 4556/4556 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1489 event pairs, 44 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 2089. Up to 336 conditions per place. [2024-06-14 12:09:13,252 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 63 selfloop transitions, 27 changer transitions 0/92 dead transitions. [2024-06-14 12:09:13,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 893 flow [2024-06-14 12:09:13,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:13,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:13,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:09:13,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-14 12:09:13,254 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 632 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:09:13,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 893 flow [2024-06-14 12:09:13,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 857 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-14 12:09:13,262 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 709 flow [2024-06-14 12:09:13,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=709, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-06-14 12:09:13,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-14 12:09:13,263 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 709 flow [2024-06-14 12:09:13,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:13,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:13,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:13,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:09:13,264 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 12:09:13,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:13,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1144947182, now seen corresponding path program 3 times [2024-06-14 12:09:13,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:13,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805836521] [2024-06-14 12:09:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:13,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:14,113 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 12:09:14,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:14,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805836521] [2024-06-14 12:09:14,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805836521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:14,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:14,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453119756] [2024-06-14 12:09:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:14,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:14,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:14,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 709 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:14,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:14,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:14,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:14,466 INFO L124 PetriNetUnfolderBase]: 230/416 cut-off events. [2024-06-14 12:09:14,467 INFO L125 PetriNetUnfolderBase]: For 5271/5271 co-relation queries the response was YES. [2024-06-14 12:09:14,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 416 events. 230/416 cut-off events. For 5271/5271 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1537 event pairs, 43 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 2218. Up to 346 conditions per place. [2024-06-14 12:09:14,471 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 23 changer transitions 0/93 dead transitions. [2024-06-14 12:09:14,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 93 transitions, 955 flow [2024-06-14 12:09:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:09:14,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 12:09:14,475 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 709 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:09:14,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 93 transitions, 955 flow [2024-06-14 12:09:14,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 93 transitions, 866 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:14,489 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 699 flow [2024-06-14 12:09:14,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=699, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-06-14 12:09:14,489 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-14 12:09:14,490 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 699 flow [2024-06-14 12:09:14,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:14,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:14,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:14,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:09:14,490 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 12:09:14,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:14,491 INFO L85 PathProgramCache]: Analyzing trace with hash -634876266, now seen corresponding path program 4 times [2024-06-14 12:09:14,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:14,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635455705] [2024-06-14 12:09:14,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:14,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:15,388 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 12:09:15,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:15,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635455705] [2024-06-14 12:09:15,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635455705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:15,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:15,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:15,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668269931] [2024-06-14 12:09:15,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:15,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:15,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:15,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:15,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 699 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:15,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:15,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:15,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:15,679 INFO L124 PetriNetUnfolderBase]: 242/438 cut-off events. [2024-06-14 12:09:15,679 INFO L125 PetriNetUnfolderBase]: For 5913/5913 co-relation queries the response was YES. [2024-06-14 12:09:15,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 438 events. 242/438 cut-off events. For 5913/5913 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1655 event pairs, 74 based on Foata normal form. 2/439 useless extension candidates. Maximal degree in co-relation 2321. Up to 401 conditions per place. [2024-06-14 12:09:15,684 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2024-06-14 12:09:15,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 995 flow [2024-06-14 12:09:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 12:09:15,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32974910394265233 [2024-06-14 12:09:15,687 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 699 flow. Second operand 9 states and 92 transitions. [2024-06-14 12:09:15,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 995 flow [2024-06-14 12:09:15,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 930 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:15,700 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 771 flow [2024-06-14 12:09:15,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=771, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2024-06-14 12:09:15,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-14 12:09:15,702 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 771 flow [2024-06-14 12:09:15,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:15,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:15,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:15,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:09:15,703 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 12:09:15,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:15,704 INFO L85 PathProgramCache]: Analyzing trace with hash -634876049, now seen corresponding path program 1 times [2024-06-14 12:09:15,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:15,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407987880] [2024-06-14 12:09:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:15,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:16,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:16,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407987880] [2024-06-14 12:09:16,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407987880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:16,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:16,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:16,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246732054] [2024-06-14 12:09:16,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:16,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:16,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:16,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:16,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:16,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:16,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 771 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:16,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:16,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:16,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:16,831 INFO L124 PetriNetUnfolderBase]: 248/448 cut-off events. [2024-06-14 12:09:16,832 INFO L125 PetriNetUnfolderBase]: For 6488/6488 co-relation queries the response was YES. [2024-06-14 12:09:16,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2460 conditions, 448 events. 248/448 cut-off events. For 6488/6488 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1709 event pairs, 73 based on Foata normal form. 2/449 useless extension candidates. Maximal degree in co-relation 2409. Up to 411 conditions per place. [2024-06-14 12:09:16,836 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 81 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2024-06-14 12:09:16,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 100 transitions, 1013 flow [2024-06-14 12:09:16,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 12:09:16,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32974910394265233 [2024-06-14 12:09:16,838 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 771 flow. Second operand 9 states and 92 transitions. [2024-06-14 12:09:16,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 100 transitions, 1013 flow [2024-06-14 12:09:16,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 100 transitions, 962 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-14 12:09:16,850 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 779 flow [2024-06-14 12:09:16,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=779, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2024-06-14 12:09:16,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-14 12:09:16,851 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 779 flow [2024-06-14 12:09:16,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:16,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:16,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:16,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:09:16,853 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 12:09:16,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:16,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1141228112, now seen corresponding path program 5 times [2024-06-14 12:09:16,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:16,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966685114] [2024-06-14 12:09:16,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:16,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:17,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:17,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966685114] [2024-06-14 12:09:17,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966685114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:17,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:17,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:17,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109584658] [2024-06-14 12:09:17,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:17,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:17,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:17,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:17,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:17,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 779 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:17,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:17,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:17,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:18,210 INFO L124 PetriNetUnfolderBase]: 268/480 cut-off events. [2024-06-14 12:09:18,211 INFO L125 PetriNetUnfolderBase]: For 7248/7248 co-relation queries the response was YES. [2024-06-14 12:09:18,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2687 conditions, 480 events. 268/480 cut-off events. For 7248/7248 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1845 event pairs, 46 based on Foata normal form. 2/481 useless extension candidates. Maximal degree in co-relation 2635. Up to 362 conditions per place. [2024-06-14 12:09:18,215 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 36 changer transitions 0/111 dead transitions. [2024-06-14 12:09:18,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 111 transitions, 1167 flow [2024-06-14 12:09:18,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 12:09:18,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-14 12:09:18,217 INFO L175 Difference]: Start difference. First operand has 105 places, 88 transitions, 779 flow. Second operand 9 states and 102 transitions. [2024-06-14 12:09:18,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 111 transitions, 1167 flow [2024-06-14 12:09:18,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 1115 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:18,230 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 917 flow [2024-06-14 12:09:18,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=917, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2024-06-14 12:09:18,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-14 12:09:18,231 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 917 flow [2024-06-14 12:09:18,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:18,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:18,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:18,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:09:18,232 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 12:09:18,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:18,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1860979188, now seen corresponding path program 6 times [2024-06-14 12:09:18,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:18,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649898472] [2024-06-14 12:09:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:18,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:19,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:19,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649898472] [2024-06-14 12:09:19,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649898472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:19,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:19,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:19,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574782448] [2024-06-14 12:09:19,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:19,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:19,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:19,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:19,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:19,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:19,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 917 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:19,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:19,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:19,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:19,456 INFO L124 PetriNetUnfolderBase]: 274/491 cut-off events. [2024-06-14 12:09:19,456 INFO L125 PetriNetUnfolderBase]: For 8353/8353 co-relation queries the response was YES. [2024-06-14 12:09:19,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2884 conditions, 491 events. 274/491 cut-off events. For 8353/8353 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1931 event pairs, 75 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2830. Up to 442 conditions per place. [2024-06-14 12:09:19,461 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 83 selfloop transitions, 22 changer transitions 0/107 dead transitions. [2024-06-14 12:09:19,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 107 transitions, 1189 flow [2024-06-14 12:09:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-14 12:09:19,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-14 12:09:19,463 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 917 flow. Second operand 8 states and 83 transitions. [2024-06-14 12:09:19,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 107 transitions, 1189 flow [2024-06-14 12:09:19,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 107 transitions, 1137 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-14 12:09:19,477 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 957 flow [2024-06-14 12:09:19,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=957, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2024-06-14 12:09:19,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-14 12:09:19,478 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 957 flow [2024-06-14 12:09:19,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:19,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:19,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:19,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:09:19,479 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 12:09:19,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1860979405, now seen corresponding path program 2 times [2024-06-14 12:09:19,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:19,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347222052] [2024-06-14 12:09:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:19,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:20,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:20,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347222052] [2024-06-14 12:09:20,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347222052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:20,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:20,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:20,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478743628] [2024-06-14 12:09:20,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:20,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:20,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:20,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:20,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:20,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:20,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 957 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:20,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:20,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:20,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:20,597 INFO L124 PetriNetUnfolderBase]: 280/501 cut-off events. [2024-06-14 12:09:20,597 INFO L125 PetriNetUnfolderBase]: For 9060/9060 co-relation queries the response was YES. [2024-06-14 12:09:20,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 501 events. 280/501 cut-off events. For 9060/9060 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1959 event pairs, 77 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2945. Up to 452 conditions per place. [2024-06-14 12:09:20,603 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 85 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-14 12:09:20,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 109 transitions, 1215 flow [2024-06-14 12:09:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:20,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-14 12:09:20,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-14 12:09:20,604 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 957 flow. Second operand 8 states and 83 transitions. [2024-06-14 12:09:20,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 109 transitions, 1215 flow [2024-06-14 12:09:20,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 109 transitions, 1153 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:09:20,620 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 971 flow [2024-06-14 12:09:20,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=971, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-06-14 12:09:20,621 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-14 12:09:20,621 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 971 flow [2024-06-14 12:09:20,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:20,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:20,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:20,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:09:20,622 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 12:09:20,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:20,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1860973608, now seen corresponding path program 7 times [2024-06-14 12:09:20,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:20,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119664296] [2024-06-14 12:09:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:20,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:21,422 INFO 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 12:09:21,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:21,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119664296] [2024-06-14 12:09:21,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119664296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:21,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:21,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:21,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641873938] [2024-06-14 12:09:21,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:21,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:21,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:21,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:21,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:21,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:21,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 971 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:21,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:21,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:21,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:21,755 INFO L124 PetriNetUnfolderBase]: 286/510 cut-off events. [2024-06-14 12:09:21,755 INFO L125 PetriNetUnfolderBase]: For 9728/9728 co-relation queries the response was YES. [2024-06-14 12:09:21,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 510 events. 286/510 cut-off events. For 9728/9728 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2009 event pairs, 43 based on Foata normal form. 2/511 useless extension candidates. Maximal degree in co-relation 3056. Up to 395 conditions per place. [2024-06-14 12:09:21,761 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 75 selfloop transitions, 36 changer transitions 0/113 dead transitions. [2024-06-14 12:09:21,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 113 transitions, 1267 flow [2024-06-14 12:09:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 12:09:21,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:09:21,762 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 971 flow. Second operand 8 states and 88 transitions. [2024-06-14 12:09:21,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 113 transitions, 1267 flow [2024-06-14 12:09:21,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 1211 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:09:21,781 INFO L231 Difference]: Finished difference. Result has 116 places, 101 transitions, 1039 flow [2024-06-14 12:09:21,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1039, PETRI_PLACES=116, PETRI_TRANSITIONS=101} [2024-06-14 12:09:21,782 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-14 12:09:21,782 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 101 transitions, 1039 flow [2024-06-14 12:09:21,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:21,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:21,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:21,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:09:21,783 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 12:09:21,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:21,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1230259507, now seen corresponding path program 3 times [2024-06-14 12:09:21,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:21,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121933804] [2024-06-14 12:09:21,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:21,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:22,834 INFO 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 12:09:22,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:22,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121933804] [2024-06-14 12:09:22,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121933804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:22,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:22,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:22,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534057793] [2024-06-14 12:09:22,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:22,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:22,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:22,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:22,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:22,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:22,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 101 transitions, 1039 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:22,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:22,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:22,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:23,142 INFO L124 PetriNetUnfolderBase]: 289/517 cut-off events. [2024-06-14 12:09:23,142 INFO L125 PetriNetUnfolderBase]: For 9881/9881 co-relation queries the response was YES. [2024-06-14 12:09:23,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 517 events. 289/517 cut-off events. For 9881/9881 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2071 event pairs, 94 based on Foata normal form. 1/517 useless extension candidates. Maximal degree in co-relation 3114. Up to 490 conditions per place. [2024-06-14 12:09:23,147 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 97 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2024-06-14 12:09:23,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 112 transitions, 1299 flow [2024-06-14 12:09:23,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-14 12:09:23,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3185483870967742 [2024-06-14 12:09:23,149 INFO L175 Difference]: Start difference. First operand has 116 places, 101 transitions, 1039 flow. Second operand 8 states and 79 transitions. [2024-06-14 12:09:23,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 112 transitions, 1299 flow [2024-06-14 12:09:23,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 112 transitions, 1196 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:23,163 INFO L231 Difference]: Finished difference. Result has 118 places, 105 transitions, 1000 flow [2024-06-14 12:09:23,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1000, PETRI_PLACES=118, PETRI_TRANSITIONS=105} [2024-06-14 12:09:23,164 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-14 12:09:23,164 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 105 transitions, 1000 flow [2024-06-14 12:09:23,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:23,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:23,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:23,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:09:23,165 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 12:09:23,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:23,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1230526634, now seen corresponding path program 8 times [2024-06-14 12:09:23,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:23,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694008293] [2024-06-14 12:09:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:23,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:23,942 INFO 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 12:09:23,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:23,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694008293] [2024-06-14 12:09:23,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694008293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:23,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:23,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:23,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753950898] [2024-06-14 12:09:23,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:23,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:23,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:23,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:23,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:23,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:23,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 105 transitions, 1000 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:23,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:23,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:23,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:24,210 INFO L124 PetriNetUnfolderBase]: 305/543 cut-off events. [2024-06-14 12:09:24,210 INFO L125 PetriNetUnfolderBase]: For 10910/10910 co-relation queries the response was YES. [2024-06-14 12:09:24,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3354 conditions, 543 events. 305/543 cut-off events. For 10910/10910 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2185 event pairs, 81 based on Foata normal form. 2/542 useless extension candidates. Maximal degree in co-relation 3295. Up to 463 conditions per place. [2024-06-14 12:09:24,216 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 87 selfloop transitions, 30 changer transitions 0/119 dead transitions. [2024-06-14 12:09:24,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 119 transitions, 1394 flow [2024-06-14 12:09:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-14 12:09:24,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-14 12:09:24,219 INFO L175 Difference]: Start difference. First operand has 118 places, 105 transitions, 1000 flow. Second operand 8 states and 86 transitions. [2024-06-14 12:09:24,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 119 transitions, 1394 flow [2024-06-14 12:09:24,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 1355 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-14 12:09:24,237 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1118 flow [2024-06-14 12:09:24,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1118, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-06-14 12:09:24,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-14 12:09:24,238 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1118 flow [2024-06-14 12:09:24,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:24,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:24,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:24,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:09:24,239 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 12:09:24,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1237878067, now seen corresponding path program 4 times [2024-06-14 12:09:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:24,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664538927] [2024-06-14 12:09:24,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:24,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:25,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:25,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664538927] [2024-06-14 12:09:25,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664538927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:25,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:25,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:25,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895060224] [2024-06-14 12:09:25,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:25,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:25,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:25,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:25,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:25,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:25,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1118 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:25,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:25,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:25,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:25,315 INFO L124 PetriNetUnfolderBase]: 311/553 cut-off events. [2024-06-14 12:09:25,316 INFO L125 PetriNetUnfolderBase]: For 12144/12144 co-relation queries the response was YES. [2024-06-14 12:09:25,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3515 conditions, 553 events. 311/553 cut-off events. For 12144/12144 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2250 event pairs, 81 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 3454. Up to 506 conditions per place. [2024-06-14 12:09:25,321 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 97 selfloop transitions, 20 changer transitions 0/119 dead transitions. [2024-06-14 12:09:25,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 119 transitions, 1394 flow [2024-06-14 12:09:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:25,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 12:09:25,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-14 12:09:25,324 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1118 flow. Second operand 8 states and 82 transitions. [2024-06-14 12:09:25,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 119 transitions, 1394 flow [2024-06-14 12:09:25,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 119 transitions, 1330 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-14 12:09:25,343 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 1125 flow [2024-06-14 12:09:25,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1125, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2024-06-14 12:09:25,344 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-14 12:09:25,345 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 1125 flow [2024-06-14 12:09:25,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:25,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:25,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:25,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:09:25,345 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 12:09:25,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:25,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1230526417, now seen corresponding path program 5 times [2024-06-14 12:09:25,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:25,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028453386] [2024-06-14 12:09:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:25,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:26,424 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 12:09:26,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:26,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028453386] [2024-06-14 12:09:26,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028453386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:26,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:26,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:26,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322005251] [2024-06-14 12:09:26,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:26,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:26,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:26,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:26,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:26,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:26,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 1125 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:26,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:26,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:26,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:26,665 INFO L124 PetriNetUnfolderBase]: 309/550 cut-off events. [2024-06-14 12:09:26,666 INFO L125 PetriNetUnfolderBase]: For 11955/11955 co-relation queries the response was YES. [2024-06-14 12:09:26,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3512 conditions, 550 events. 309/550 cut-off events. For 11955/11955 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2238 event pairs, 80 based on Foata normal form. 1/548 useless extension candidates. Maximal degree in co-relation 3449. Up to 479 conditions per place. [2024-06-14 12:09:26,671 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 91 selfloop transitions, 31 changer transitions 0/124 dead transitions. [2024-06-14 12:09:26,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 124 transitions, 1442 flow [2024-06-14 12:09:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:26,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-14 12:09:26,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:09:26,672 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 1125 flow. Second operand 8 states and 84 transitions. [2024-06-14 12:09:26,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 124 transitions, 1442 flow [2024-06-14 12:09:26,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 124 transitions, 1372 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 12:09:26,693 INFO L231 Difference]: Finished difference. Result has 129 places, 117 transitions, 1203 flow [2024-06-14 12:09:26,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1203, PETRI_PLACES=129, PETRI_TRANSITIONS=117} [2024-06-14 12:09:26,694 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-14 12:09:26,694 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 117 transitions, 1203 flow [2024-06-14 12:09:26,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:26,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:26,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:26,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:09:26,695 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 12:09:26,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:26,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1237883864, now seen corresponding path program 9 times [2024-06-14 12:09:26,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:26,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293144419] [2024-06-14 12:09:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:26,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:27,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:27,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293144419] [2024-06-14 12:09:27,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293144419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:27,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:27,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:27,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157309468] [2024-06-14 12:09:27,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:27,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:27,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:27,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:27,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:27,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:27,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 117 transitions, 1203 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:27,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:27,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:27,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:27,901 INFO L124 PetriNetUnfolderBase]: 310/550 cut-off events. [2024-06-14 12:09:27,901 INFO L125 PetriNetUnfolderBase]: For 12848/12848 co-relation queries the response was YES. [2024-06-14 12:09:27,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3602 conditions, 550 events. 310/550 cut-off events. For 12848/12848 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2230 event pairs, 50 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 3537. Up to 431 conditions per place. [2024-06-14 12:09:27,905 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 87 selfloop transitions, 40 changer transitions 0/129 dead transitions. [2024-06-14 12:09:27,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 129 transitions, 1533 flow [2024-06-14 12:09:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:27,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:09:27,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:09:27,906 INFO L175 Difference]: Start difference. First operand has 129 places, 117 transitions, 1203 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:09:27,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 129 transitions, 1533 flow [2024-06-14 12:09:27,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 129 transitions, 1488 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 12:09:27,919 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 1295 flow [2024-06-14 12:09:27,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1295, PETRI_PLACES=134, PETRI_TRANSITIONS=119} [2024-06-14 12:09:27,920 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-14 12:09:27,920 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 1295 flow [2024-06-14 12:09:27,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:27,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:27,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:27,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:09:27,921 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 12:09:27,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:27,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1237878284, now seen corresponding path program 10 times [2024-06-14 12:09:27,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:27,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446342695] [2024-06-14 12:09:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:27,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:28,619 INFO 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 12:09:28,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:28,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446342695] [2024-06-14 12:09:28,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446342695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:28,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:28,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:09:28,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974832304] [2024-06-14 12:09:28,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:28,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:09:28,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:28,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:09:28,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:09:28,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:28,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 119 transitions, 1295 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:28,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:28,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:28,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:28,867 INFO L124 PetriNetUnfolderBase]: 306/546 cut-off events. [2024-06-14 12:09:28,867 INFO L125 PetriNetUnfolderBase]: For 13005/13005 co-relation queries the response was YES. [2024-06-14 12:09:28,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 546 events. 306/546 cut-off events. For 13005/13005 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2216 event pairs, 81 based on Foata normal form. 2/545 useless extension candidates. Maximal degree in co-relation 3550. Up to 499 conditions per place. [2024-06-14 12:09:28,871 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 105 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-06-14 12:09:28,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 127 transitions, 1565 flow [2024-06-14 12:09:28,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 12:09:28,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-14 12:09:28,872 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 1295 flow. Second operand 8 states and 82 transitions. [2024-06-14 12:09:28,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 127 transitions, 1565 flow [2024-06-14 12:09:28,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 127 transitions, 1422 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:28,889 INFO L231 Difference]: Finished difference. Result has 135 places, 119 transitions, 1197 flow [2024-06-14 12:09:28,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1197, PETRI_PLACES=135, PETRI_TRANSITIONS=119} [2024-06-14 12:09:28,890 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-14 12:09:28,890 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 119 transitions, 1197 flow [2024-06-14 12:09:28,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:28,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:28,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:28,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:09:28,891 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 12:09:28,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1230249587, now seen corresponding path program 1 times [2024-06-14 12:09:28,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:28,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783042458] [2024-06-14 12:09:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:28,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:30,215 INFO 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 12:09:30,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:30,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783042458] [2024-06-14 12:09:30,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783042458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:30,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:30,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:30,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368944154] [2024-06-14 12:09:30,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:30,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:30,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:30,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:30,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:30,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:30,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 119 transitions, 1197 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:30,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:30,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:30,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:30,472 INFO L124 PetriNetUnfolderBase]: 303/541 cut-off events. [2024-06-14 12:09:30,472 INFO L125 PetriNetUnfolderBase]: For 12431/12431 co-relation queries the response was YES. [2024-06-14 12:09:30,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3439 conditions, 541 events. 303/541 cut-off events. For 12431/12431 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2182 event pairs, 95 based on Foata normal form. 2/542 useless extension candidates. Maximal degree in co-relation 3371. Up to 508 conditions per place. [2024-06-14 12:09:30,475 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 112 selfloop transitions, 14 changer transitions 0/128 dead transitions. [2024-06-14 12:09:30,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 128 transitions, 1469 flow [2024-06-14 12:09:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:30,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-14 12:09:30,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30824372759856633 [2024-06-14 12:09:30,476 INFO L175 Difference]: Start difference. First operand has 135 places, 119 transitions, 1197 flow. Second operand 9 states and 86 transitions. [2024-06-14 12:09:30,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 128 transitions, 1469 flow [2024-06-14 12:09:30,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 128 transitions, 1401 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:30,491 INFO L231 Difference]: Finished difference. Result has 137 places, 119 transitions, 1161 flow [2024-06-14 12:09:30,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1161, PETRI_PLACES=137, PETRI_TRANSITIONS=119} [2024-06-14 12:09:30,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-14 12:09:30,492 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 119 transitions, 1161 flow [2024-06-14 12:09:30,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:30,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:30,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:30,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:09:30,492 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 12:09:30,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:30,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2024213711, now seen corresponding path program 1 times [2024-06-14 12:09:30,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:30,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770576391] [2024-06-14 12:09:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:30,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:31,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:31,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770576391] [2024-06-14 12:09:31,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770576391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:31,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:31,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:31,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972554614] [2024-06-14 12:09:31,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:31,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:31,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:31,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:31,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:31,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:31,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 119 transitions, 1161 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:31,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:31,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:31,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:31,578 INFO L124 PetriNetUnfolderBase]: 312/559 cut-off events. [2024-06-14 12:09:31,579 INFO L125 PetriNetUnfolderBase]: For 13049/13049 co-relation queries the response was YES. [2024-06-14 12:09:31,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3493 conditions, 559 events. 312/559 cut-off events. For 13049/13049 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2314 event pairs, 48 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3424. Up to 465 conditions per place. [2024-06-14 12:09:31,582 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 113 selfloop transitions, 22 changer transitions 0/137 dead transitions. [2024-06-14 12:09:31,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 137 transitions, 1489 flow [2024-06-14 12:09:31,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 12:09:31,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-14 12:09:31,583 INFO L175 Difference]: Start difference. First operand has 137 places, 119 transitions, 1161 flow. Second operand 9 states and 94 transitions. [2024-06-14 12:09:31,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 137 transitions, 1489 flow [2024-06-14 12:09:31,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 137 transitions, 1436 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:31,599 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 1176 flow [2024-06-14 12:09:31,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1176, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2024-06-14 12:09:31,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-14 12:09:31,599 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 1176 flow [2024-06-14 12:09:31,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:31,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:31,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:31,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:09:31,600 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 12:09:31,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1119923773, now seen corresponding path program 2 times [2024-06-14 12:09:31,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:31,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214192414] [2024-06-14 12:09:31,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:31,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:32,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:32,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214192414] [2024-06-14 12:09:32,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214192414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:32,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:32,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:32,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598327826] [2024-06-14 12:09:32,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:32,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:32,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:32,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:32,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 1176 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:32,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:32,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:32,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:32,585 INFO L124 PetriNetUnfolderBase]: 325/585 cut-off events. [2024-06-14 12:09:32,586 INFO L125 PetriNetUnfolderBase]: For 13776/13776 co-relation queries the response was YES. [2024-06-14 12:09:32,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3639 conditions, 585 events. 325/585 cut-off events. For 13776/13776 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2495 event pairs, 75 based on Foata normal form. 2/586 useless extension candidates. Maximal degree in co-relation 3571. Up to 507 conditions per place. [2024-06-14 12:09:32,589 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 115 selfloop transitions, 24 changer transitions 0/141 dead transitions. [2024-06-14 12:09:32,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 141 transitions, 1546 flow [2024-06-14 12:09:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:09:32,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-14 12:09:32,591 INFO L175 Difference]: Start difference. First operand has 137 places, 121 transitions, 1176 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:09:32,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 141 transitions, 1546 flow [2024-06-14 12:09:32,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 141 transitions, 1478 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:32,610 INFO L231 Difference]: Finished difference. Result has 140 places, 125 transitions, 1216 flow [2024-06-14 12:09:32,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1216, PETRI_PLACES=140, PETRI_TRANSITIONS=125} [2024-06-14 12:09:32,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-14 12:09:32,611 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 125 transitions, 1216 flow [2024-06-14 12:09:32,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:32,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:32,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:32,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:09:32,612 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 12:09:32,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1118058069, now seen corresponding path program 1 times [2024-06-14 12:09:32,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:32,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993904440] [2024-06-14 12:09:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:32,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:33,667 INFO 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 12:09:33,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:33,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993904440] [2024-06-14 12:09:33,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993904440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:33,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:33,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:33,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361187892] [2024-06-14 12:09:33,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:33,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:33,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:33,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:33,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:33,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:33,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 125 transitions, 1216 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:33,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:33,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:33,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:33,965 INFO L124 PetriNetUnfolderBase]: 331/595 cut-off events. [2024-06-14 12:09:33,965 INFO L125 PetriNetUnfolderBase]: For 14573/14573 co-relation queries the response was YES. [2024-06-14 12:09:33,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3719 conditions, 595 events. 331/595 cut-off events. For 14573/14573 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2553 event pairs, 70 based on Foata normal form. 1/595 useless extension candidates. Maximal degree in co-relation 3650. Up to 515 conditions per place. [2024-06-14 12:09:33,969 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 112 selfloop transitions, 30 changer transitions 0/144 dead transitions. [2024-06-14 12:09:33,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 144 transitions, 1597 flow [2024-06-14 12:09:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:09:33,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 12:09:33,970 INFO L175 Difference]: Start difference. First operand has 140 places, 125 transitions, 1216 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:09:33,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 144 transitions, 1597 flow [2024-06-14 12:09:33,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 144 transitions, 1535 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:09:34,000 INFO L231 Difference]: Finished difference. Result has 144 places, 129 transitions, 1291 flow [2024-06-14 12:09:34,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1291, PETRI_PLACES=144, PETRI_TRANSITIONS=129} [2024-06-14 12:09:34,001 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-14 12:09:34,001 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 129 transitions, 1291 flow [2024-06-14 12:09:34,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:34,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:34,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:34,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:09:34,002 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 12:09:34,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:34,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1118049823, now seen corresponding path program 3 times [2024-06-14 12:09:34,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:34,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804081166] [2024-06-14 12:09:34,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:34,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:34,792 INFO 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 12:09:34,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:34,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804081166] [2024-06-14 12:09:34,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804081166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:34,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:34,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:34,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007661742] [2024-06-14 12:09:34,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:34,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:34,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:34,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:34,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:34,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:34,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 129 transitions, 1291 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:34,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:34,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:34,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:35,115 INFO L124 PetriNetUnfolderBase]: 335/603 cut-off events. [2024-06-14 12:09:35,116 INFO L125 PetriNetUnfolderBase]: For 15795/15795 co-relation queries the response was YES. [2024-06-14 12:09:35,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3809 conditions, 603 events. 335/603 cut-off events. For 15795/15795 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2599 event pairs, 73 based on Foata normal form. 2/604 useless extension candidates. Maximal degree in co-relation 3739. Up to 526 conditions per place. [2024-06-14 12:09:35,122 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 116 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-06-14 12:09:35,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 145 transitions, 1635 flow [2024-06-14 12:09:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:35,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:09:35,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-14 12:09:35,123 INFO L175 Difference]: Start difference. First operand has 144 places, 129 transitions, 1291 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:09:35,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 145 transitions, 1635 flow [2024-06-14 12:09:35,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 1563 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:09:35,158 INFO L231 Difference]: Finished difference. Result has 147 places, 130 transitions, 1298 flow [2024-06-14 12:09:35,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1298, PETRI_PLACES=147, PETRI_TRANSITIONS=130} [2024-06-14 12:09:35,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-14 12:09:35,159 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 130 transitions, 1298 flow [2024-06-14 12:09:35,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:35,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:35,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:35,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:09:35,160 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 12:09:35,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:35,161 INFO L85 PathProgramCache]: Analyzing trace with hash -81361905, now seen corresponding path program 1 times [2024-06-14 12:09:35,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:35,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878683713] [2024-06-14 12:09:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:35,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:35,949 INFO 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 12:09:35,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:35,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878683713] [2024-06-14 12:09:35,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878683713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:35,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:35,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:35,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862853023] [2024-06-14 12:09:35,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:35,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:35,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:35,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:35,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:36,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:36,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 130 transitions, 1298 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:36,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:36,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:36,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:36,265 INFO L124 PetriNetUnfolderBase]: 341/614 cut-off events. [2024-06-14 12:09:36,265 INFO L125 PetriNetUnfolderBase]: For 16873/16873 co-relation queries the response was YES. [2024-06-14 12:09:36,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3878 conditions, 614 events. 341/614 cut-off events. For 16873/16873 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2665 event pairs, 55 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 3807. Up to 531 conditions per place. [2024-06-14 12:09:36,270 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 116 selfloop transitions, 31 changer transitions 0/149 dead transitions. [2024-06-14 12:09:36,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 149 transitions, 1672 flow [2024-06-14 12:09:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:36,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:09:36,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:09:36,272 INFO L175 Difference]: Start difference. First operand has 147 places, 130 transitions, 1298 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:09:36,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 149 transitions, 1672 flow [2024-06-14 12:09:36,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 149 transitions, 1605 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:36,309 INFO L231 Difference]: Finished difference. Result has 150 places, 132 transitions, 1334 flow [2024-06-14 12:09:36,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1334, PETRI_PLACES=150, PETRI_TRANSITIONS=132} [2024-06-14 12:09:36,310 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-14 12:09:36,310 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 132 transitions, 1334 flow [2024-06-14 12:09:36,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:36,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:36,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:36,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:09:36,311 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 12:09:36,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:36,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1082716087, now seen corresponding path program 4 times [2024-06-14 12:09:36,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:36,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258153882] [2024-06-14 12:09:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:36,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:37,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:37,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258153882] [2024-06-14 12:09:37,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258153882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:37,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:37,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:37,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589479063] [2024-06-14 12:09:37,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:37,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:37,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:37,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:37,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:37,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:37,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 132 transitions, 1334 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:37,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:37,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:37,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:37,408 INFO L124 PetriNetUnfolderBase]: 350/632 cut-off events. [2024-06-14 12:09:37,409 INFO L125 PetriNetUnfolderBase]: For 17782/17782 co-relation queries the response was YES. [2024-06-14 12:09:37,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 632 events. 350/632 cut-off events. For 17782/17782 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2782 event pairs, 53 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 3936. Up to 554 conditions per place. [2024-06-14 12:09:37,413 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 124 selfloop transitions, 23 changer transitions 0/149 dead transitions. [2024-06-14 12:09:37,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 149 transitions, 1694 flow [2024-06-14 12:09:37,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:37,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:37,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:09:37,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 12:09:37,424 INFO L175 Difference]: Start difference. First operand has 150 places, 132 transitions, 1334 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:09:37,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 149 transitions, 1694 flow [2024-06-14 12:09:37,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 149 transitions, 1607 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:37,465 INFO L231 Difference]: Finished difference. Result has 152 places, 134 transitions, 1329 flow [2024-06-14 12:09:37,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1329, PETRI_PLACES=152, PETRI_TRANSITIONS=134} [2024-06-14 12:09:37,466 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-14 12:09:37,466 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 134 transitions, 1329 flow [2024-06-14 12:09:37,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:37,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:37,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:37,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:09:37,466 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 12:09:37,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:37,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1136424781, now seen corresponding path program 5 times [2024-06-14 12:09:37,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:37,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089194416] [2024-06-14 12:09:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:37,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:38,327 INFO 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 12:09:38,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:38,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089194416] [2024-06-14 12:09:38,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089194416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:38,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:38,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:38,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015048371] [2024-06-14 12:09:38,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:38,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:38,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:38,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:38,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:38,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:38,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 134 transitions, 1329 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:38,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:38,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:38,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:38,692 INFO L124 PetriNetUnfolderBase]: 354/640 cut-off events. [2024-06-14 12:09:38,693 INFO L125 PetriNetUnfolderBase]: For 18874/18874 co-relation queries the response was YES. [2024-06-14 12:09:38,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4059 conditions, 640 events. 354/640 cut-off events. For 18874/18874 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2849 event pairs, 53 based on Foata normal form. 2/641 useless extension candidates. Maximal degree in co-relation 3985. Up to 563 conditions per place. [2024-06-14 12:09:38,698 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 122 selfloop transitions, 26 changer transitions 0/150 dead transitions. [2024-06-14 12:09:38,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 150 transitions, 1694 flow [2024-06-14 12:09:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:09:38,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 12:09:38,705 INFO L175 Difference]: Start difference. First operand has 152 places, 134 transitions, 1329 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:09:38,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 150 transitions, 1694 flow [2024-06-14 12:09:38,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 150 transitions, 1636 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 12:09:38,750 INFO L231 Difference]: Finished difference. Result has 157 places, 136 transitions, 1369 flow [2024-06-14 12:09:38,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1369, PETRI_PLACES=157, PETRI_TRANSITIONS=136} [2024-06-14 12:09:38,750 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-14 12:09:38,751 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 136 transitions, 1369 flow [2024-06-14 12:09:38,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:38,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:38,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:38,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:09:38,751 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 12:09:38,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:38,752 INFO L85 PathProgramCache]: Analyzing trace with hash -165235709, now seen corresponding path program 2 times [2024-06-14 12:09:38,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:38,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042890176] [2024-06-14 12:09:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:38,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:39,726 INFO 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 12:09:39,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:39,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042890176] [2024-06-14 12:09:39,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042890176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:39,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:39,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:39,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733731350] [2024-06-14 12:09:39,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:39,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:39,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:39,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:39,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:39,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:39,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 136 transitions, 1369 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:39,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:39,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:39,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:40,072 INFO L124 PetriNetUnfolderBase]: 352/637 cut-off events. [2024-06-14 12:09:40,072 INFO L125 PetriNetUnfolderBase]: For 18518/18518 co-relation queries the response was YES. [2024-06-14 12:09:40,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4022 conditions, 637 events. 352/637 cut-off events. For 18518/18518 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2828 event pairs, 53 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 3946. Up to 557 conditions per place. [2024-06-14 12:09:40,076 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 119 selfloop transitions, 29 changer transitions 0/150 dead transitions. [2024-06-14 12:09:40,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 150 transitions, 1705 flow [2024-06-14 12:09:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 12:09:40,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:09:40,078 INFO L175 Difference]: Start difference. First operand has 157 places, 136 transitions, 1369 flow. Second operand 9 states and 99 transitions. [2024-06-14 12:09:40,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 150 transitions, 1705 flow [2024-06-14 12:09:40,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 150 transitions, 1626 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-14 12:09:40,126 INFO L231 Difference]: Finished difference. Result has 160 places, 136 transitions, 1356 flow [2024-06-14 12:09:40,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1356, PETRI_PLACES=160, PETRI_TRANSITIONS=136} [2024-06-14 12:09:40,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-14 12:09:40,127 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 136 transitions, 1356 flow [2024-06-14 12:09:40,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:40,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:40,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:40,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:09:40,127 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 12:09:40,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1133623311, now seen corresponding path program 2 times [2024-06-14 12:09:40,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:40,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117234622] [2024-06-14 12:09:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:40,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:40,888 INFO 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 12:09:40,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:40,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117234622] [2024-06-14 12:09:40,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117234622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:40,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:40,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:40,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539700378] [2024-06-14 12:09:40,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:40,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:40,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:40,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:40,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:40,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:40,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 136 transitions, 1356 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:40,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:40,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:40,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:41,213 INFO L124 PetriNetUnfolderBase]: 358/648 cut-off events. [2024-06-14 12:09:41,213 INFO L125 PetriNetUnfolderBase]: For 20015/20015 co-relation queries the response was YES. [2024-06-14 12:09:41,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4074 conditions, 648 events. 358/648 cut-off events. For 20015/20015 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2902 event pairs, 55 based on Foata normal form. 2/649 useless extension candidates. Maximal degree in co-relation 3997. Up to 565 conditions per place. [2024-06-14 12:09:41,218 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 124 selfloop transitions, 28 changer transitions 0/154 dead transitions. [2024-06-14 12:09:41,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 154 transitions, 1742 flow [2024-06-14 12:09:41,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:41,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:41,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:09:41,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-14 12:09:41,219 INFO L175 Difference]: Start difference. First operand has 160 places, 136 transitions, 1356 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:09:41,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 154 transitions, 1742 flow [2024-06-14 12:09:41,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 154 transitions, 1646 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:41,252 INFO L231 Difference]: Finished difference. Result has 162 places, 138 transitions, 1361 flow [2024-06-14 12:09:41,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1361, PETRI_PLACES=162, PETRI_TRANSITIONS=138} [2024-06-14 12:09:41,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-14 12:09:41,253 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 138 transitions, 1361 flow [2024-06-14 12:09:41,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:41,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:41,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:41,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:09:41,254 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 12:09:41,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:41,254 INFO L85 PathProgramCache]: Analyzing trace with hash -160651863, now seen corresponding path program 6 times [2024-06-14 12:09:41,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:41,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588594658] [2024-06-14 12:09:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:41,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:42,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:42,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588594658] [2024-06-14 12:09:42,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588594658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:42,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:42,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:42,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378908927] [2024-06-14 12:09:42,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:42,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:42,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:42,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:42,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:42,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:42,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 138 transitions, 1361 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:42,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:42,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:42,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:42,385 INFO L124 PetriNetUnfolderBase]: 362/656 cut-off events. [2024-06-14 12:09:42,385 INFO L125 PetriNetUnfolderBase]: For 20090/20090 co-relation queries the response was YES. [2024-06-14 12:09:42,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4123 conditions, 656 events. 362/656 cut-off events. For 20090/20090 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2949 event pairs, 53 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 4045. Up to 562 conditions per place. [2024-06-14 12:09:42,390 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 118 selfloop transitions, 33 changer transitions 0/153 dead transitions. [2024-06-14 12:09:42,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 153 transitions, 1725 flow [2024-06-14 12:09:42,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:42,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:09:42,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 12:09:42,393 INFO L175 Difference]: Start difference. First operand has 162 places, 138 transitions, 1361 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:09:42,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 153 transitions, 1725 flow [2024-06-14 12:09:42,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 153 transitions, 1635 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:42,443 INFO L231 Difference]: Finished difference. Result has 162 places, 139 transitions, 1367 flow [2024-06-14 12:09:42,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1367, PETRI_PLACES=162, PETRI_TRANSITIONS=139} [2024-06-14 12:09:42,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-14 12:09:42,444 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 139 transitions, 1367 flow [2024-06-14 12:09:42,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:42,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:42,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:42,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:09:42,445 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 12:09:42,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:42,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1793500217, now seen corresponding path program 3 times [2024-06-14 12:09:42,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:42,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170524356] [2024-06-14 12:09:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:42,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:43,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:43,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170524356] [2024-06-14 12:09:43,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170524356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:43,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:43,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:43,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841022865] [2024-06-14 12:09:43,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:43,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:43,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:43,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:43,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:43,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:43,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 139 transitions, 1367 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:43,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:43,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:43,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:43,469 INFO L124 PetriNetUnfolderBase]: 368/666 cut-off events. [2024-06-14 12:09:43,469 INFO L125 PetriNetUnfolderBase]: For 21108/21108 co-relation queries the response was YES. [2024-06-14 12:09:43,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 666 events. 368/666 cut-off events. For 21108/21108 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3001 event pairs, 53 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 4109. Up to 562 conditions per place. [2024-06-14 12:09:43,475 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 36 changer transitions 0/157 dead transitions. [2024-06-14 12:09:43,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 157 transitions, 1761 flow [2024-06-14 12:09:43,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:43,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:43,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:09:43,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:09:43,477 INFO L175 Difference]: Start difference. First operand has 162 places, 139 transitions, 1367 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:09:43,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 157 transitions, 1761 flow [2024-06-14 12:09:43,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 157 transitions, 1672 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:43,515 INFO L231 Difference]: Finished difference. Result has 165 places, 141 transitions, 1397 flow [2024-06-14 12:09:43,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1397, PETRI_PLACES=165, PETRI_TRANSITIONS=141} [2024-06-14 12:09:43,516 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-14 12:09:43,516 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 141 transitions, 1397 flow [2024-06-14 12:09:43,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:43,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:43,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:43,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:09:43,517 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 12:09:43,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:43,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1793679707, now seen corresponding path program 4 times [2024-06-14 12:09:43,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:43,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847440759] [2024-06-14 12:09:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:43,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:44,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:44,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847440759] [2024-06-14 12:09:44,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847440759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:44,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:44,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:44,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168814839] [2024-06-14 12:09:44,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:44,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:44,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:44,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:44,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:44,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:44,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 141 transitions, 1397 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:44,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:44,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:44,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:44,493 INFO L124 PetriNetUnfolderBase]: 400/717 cut-off events. [2024-06-14 12:09:44,493 INFO L125 PetriNetUnfolderBase]: For 26988/26988 co-relation queries the response was YES. [2024-06-14 12:09:44,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4698 conditions, 717 events. 400/717 cut-off events. For 26988/26988 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3283 event pairs, 94 based on Foata normal form. 4/720 useless extension candidates. Maximal degree in co-relation 4619. Up to 634 conditions per place. [2024-06-14 12:09:44,497 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 24 changer transitions 0/164 dead transitions. [2024-06-14 12:09:44,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 164 transitions, 1950 flow [2024-06-14 12:09:44,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:44,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:44,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:09:44,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-14 12:09:44,499 INFO L175 Difference]: Start difference. First operand has 165 places, 141 transitions, 1397 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:09:44,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 164 transitions, 1950 flow [2024-06-14 12:09:44,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 164 transitions, 1847 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:44,540 INFO L231 Difference]: Finished difference. Result has 167 places, 146 transitions, 1445 flow [2024-06-14 12:09:44,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1445, PETRI_PLACES=167, PETRI_TRANSITIONS=146} [2024-06-14 12:09:44,540 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-14 12:09:44,540 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 146 transitions, 1445 flow [2024-06-14 12:09:44,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:44,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:44,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:44,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:09:44,541 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 12:09:44,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1793673197, now seen corresponding path program 5 times [2024-06-14 12:09:44,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:44,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871942846] [2024-06-14 12:09:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:44,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:45,315 INFO 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 12:09:45,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:45,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871942846] [2024-06-14 12:09:45,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871942846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:45,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:45,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:45,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741526613] [2024-06-14 12:09:45,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:45,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:45,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:45,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:45,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:45,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:45,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 146 transitions, 1445 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:45,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:45,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:45,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:45,618 INFO L124 PetriNetUnfolderBase]: 396/711 cut-off events. [2024-06-14 12:09:45,618 INFO L125 PetriNetUnfolderBase]: For 24837/24837 co-relation queries the response was YES. [2024-06-14 12:09:45,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 711 events. 396/711 cut-off events. For 24837/24837 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3248 event pairs, 94 based on Foata normal form. 2/712 useless extension candidates. Maximal degree in co-relation 4535. Up to 633 conditions per place. [2024-06-14 12:09:45,623 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 137 selfloop transitions, 26 changer transitions 0/165 dead transitions. [2024-06-14 12:09:45,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 165 transitions, 1948 flow [2024-06-14 12:09:45,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:09:45,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:09:45,624 INFO L175 Difference]: Start difference. First operand has 167 places, 146 transitions, 1445 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:09:45,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 165 transitions, 1948 flow [2024-06-14 12:09:45,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 165 transitions, 1870 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-14 12:09:45,665 INFO L231 Difference]: Finished difference. Result has 171 places, 148 transitions, 1472 flow [2024-06-14 12:09:45,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1472, PETRI_PLACES=171, PETRI_TRANSITIONS=148} [2024-06-14 12:09:45,665 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-14 12:09:45,665 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 148 transitions, 1472 flow [2024-06-14 12:09:45,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:45,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:45,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:45,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:09:45,666 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 12:09:45,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:45,666 INFO L85 PathProgramCache]: Analyzing trace with hash 720903653, now seen corresponding path program 7 times [2024-06-14 12:09:45,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:45,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455825592] [2024-06-14 12:09:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:45,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:46,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:46,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455825592] [2024-06-14 12:09:46,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455825592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:46,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:46,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:46,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407647571] [2024-06-14 12:09:46,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:46,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:46,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:46,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:46,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 148 transitions, 1472 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:46,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:46,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:46,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:46,817 INFO L124 PetriNetUnfolderBase]: 400/719 cut-off events. [2024-06-14 12:09:46,817 INFO L125 PetriNetUnfolderBase]: For 25806/25806 co-relation queries the response was YES. [2024-06-14 12:09:46,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4677 conditions, 719 events. 400/719 cut-off events. For 25806/25806 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3292 event pairs, 64 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 4595. Up to 582 conditions per place. [2024-06-14 12:09:46,822 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 132 selfloop transitions, 28 changer transitions 0/162 dead transitions. [2024-06-14 12:09:46,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 162 transitions, 1850 flow [2024-06-14 12:09:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-14 12:09:46,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2024-06-14 12:09:46,824 INFO L175 Difference]: Start difference. First operand has 171 places, 148 transitions, 1472 flow. Second operand 8 states and 85 transitions. [2024-06-14 12:09:46,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 162 transitions, 1850 flow [2024-06-14 12:09:46,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 162 transitions, 1776 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:46,868 INFO L231 Difference]: Finished difference. Result has 172 places, 149 transitions, 1492 flow [2024-06-14 12:09:46,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1492, PETRI_PLACES=172, PETRI_TRANSITIONS=149} [2024-06-14 12:09:46,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-14 12:09:46,869 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 149 transitions, 1492 flow [2024-06-14 12:09:46,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:46,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:46,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:46,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:09:46,869 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 12:09:46,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:46,869 INFO L85 PathProgramCache]: Analyzing trace with hash 720964103, now seen corresponding path program 8 times [2024-06-14 12:09:46,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:46,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545323625] [2024-06-14 12:09:46,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:46,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:47,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:47,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545323625] [2024-06-14 12:09:47,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545323625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:47,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:47,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:47,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864463161] [2024-06-14 12:09:47,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:47,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:47,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:47,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:47,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:47,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:47,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 149 transitions, 1492 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:47,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:47,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:47,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:48,165 INFO L124 PetriNetUnfolderBase]: 404/727 cut-off events. [2024-06-14 12:09:48,166 INFO L125 PetriNetUnfolderBase]: For 27270/27270 co-relation queries the response was YES. [2024-06-14 12:09:48,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 727 events. 404/727 cut-off events. For 27270/27270 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3340 event pairs, 78 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 4690. Up to 616 conditions per place. [2024-06-14 12:09:48,170 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 126 selfloop transitions, 35 changer transitions 0/163 dead transitions. [2024-06-14 12:09:48,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 163 transitions, 1876 flow [2024-06-14 12:09:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 12:09:48,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-14 12:09:48,171 INFO L175 Difference]: Start difference. First operand has 172 places, 149 transitions, 1492 flow. Second operand 8 states and 87 transitions. [2024-06-14 12:09:48,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 163 transitions, 1876 flow [2024-06-14 12:09:48,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 163 transitions, 1792 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-14 12:09:48,218 INFO L231 Difference]: Finished difference. Result has 174 places, 150 transitions, 1519 flow [2024-06-14 12:09:48,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1519, PETRI_PLACES=174, PETRI_TRANSITIONS=150} [2024-06-14 12:09:48,218 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-14 12:09:48,219 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 1519 flow [2024-06-14 12:09:48,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:48,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:48,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:48,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:09:48,219 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 12:09:48,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash 720964227, now seen corresponding path program 3 times [2024-06-14 12:09:48,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:48,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598567157] [2024-06-14 12:09:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:48,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:49,120 INFO 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 12:09:49,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:49,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598567157] [2024-06-14 12:09:49,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598567157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:49,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:49,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:49,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071232054] [2024-06-14 12:09:49,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:49,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:49,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:49,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:49,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:49,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:49,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 150 transitions, 1519 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:49,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:49,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:49,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:49,459 INFO L124 PetriNetUnfolderBase]: 402/724 cut-off events. [2024-06-14 12:09:49,460 INFO L125 PetriNetUnfolderBase]: For 23220/23220 co-relation queries the response was YES. [2024-06-14 12:09:49,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4628 conditions, 724 events. 402/724 cut-off events. For 23220/23220 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3330 event pairs, 76 based on Foata normal form. 1/724 useless extension candidates. Maximal degree in co-relation 4544. Up to 604 conditions per place. [2024-06-14 12:09:49,465 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 119 selfloop transitions, 44 changer transitions 0/165 dead transitions. [2024-06-14 12:09:49,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 165 transitions, 1937 flow [2024-06-14 12:09:49,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:49,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 12:09:49,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:09:49,466 INFO L175 Difference]: Start difference. First operand has 174 places, 150 transitions, 1519 flow. Second operand 8 states and 88 transitions. [2024-06-14 12:09:49,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 165 transitions, 1937 flow [2024-06-14 12:09:49,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 165 transitions, 1852 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:09:49,510 INFO L231 Difference]: Finished difference. Result has 176 places, 152 transitions, 1602 flow [2024-06-14 12:09:49,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1602, PETRI_PLACES=176, PETRI_TRANSITIONS=152} [2024-06-14 12:09:49,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-14 12:09:49,511 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 152 transitions, 1602 flow [2024-06-14 12:09:49,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:49,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:49,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:49,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:09:49,511 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 12:09:49,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:49,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1740316793, now seen corresponding path program 6 times [2024-06-14 12:09:49,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827871094] [2024-06-14 12:09:49,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:49,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:50,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:50,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827871094] [2024-06-14 12:09:50,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827871094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:50,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:50,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:50,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058199767] [2024-06-14 12:09:50,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:50,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:50,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:50,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:50,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:50,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 152 transitions, 1602 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:50,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:50,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:50,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:50,525 INFO L124 PetriNetUnfolderBase]: 408/735 cut-off events. [2024-06-14 12:09:50,525 INFO L125 PetriNetUnfolderBase]: For 23059/23059 co-relation queries the response was YES. [2024-06-14 12:09:50,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4719 conditions, 735 events. 408/735 cut-off events. For 23059/23059 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3388 event pairs, 60 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 4634. Up to 608 conditions per place. [2024-06-14 12:09:50,530 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 125 selfloop transitions, 42 changer transitions 0/169 dead transitions. [2024-06-14 12:09:50,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 169 transitions, 2028 flow [2024-06-14 12:09:50,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:09:50,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-14 12:09:50,533 INFO L175 Difference]: Start difference. First operand has 176 places, 152 transitions, 1602 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:09:50,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 169 transitions, 2028 flow [2024-06-14 12:09:50,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 169 transitions, 1906 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:50,576 INFO L231 Difference]: Finished difference. Result has 177 places, 154 transitions, 1629 flow [2024-06-14 12:09:50,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1629, PETRI_PLACES=177, PETRI_TRANSITIONS=154} [2024-06-14 12:09:50,576 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-14 12:09:50,576 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 154 transitions, 1629 flow [2024-06-14 12:09:50,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:50,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:50,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:50,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:09:50,577 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 12:09:50,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:50,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1855780943, now seen corresponding path program 7 times [2024-06-14 12:09:50,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:50,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363880747] [2024-06-14 12:09:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:50,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:51,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:51,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363880747] [2024-06-14 12:09:51,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363880747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:51,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:51,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:51,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131552341] [2024-06-14 12:09:51,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:51,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:51,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:51,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:51,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:51,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:51,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 154 transitions, 1629 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:51,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:51,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:51,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:51,669 INFO L124 PetriNetUnfolderBase]: 444/792 cut-off events. [2024-06-14 12:09:51,669 INFO L125 PetriNetUnfolderBase]: For 27066/27066 co-relation queries the response was YES. [2024-06-14 12:09:51,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5372 conditions, 792 events. 444/792 cut-off events. For 27066/27066 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3707 event pairs, 98 based on Foata normal form. 2/793 useless extension candidates. Maximal degree in co-relation 5288. Up to 653 conditions per place. [2024-06-14 12:09:51,673 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 40 changer transitions 0/177 dead transitions. [2024-06-14 12:09:51,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 177 transitions, 2344 flow [2024-06-14 12:09:51,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 12:09:51,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-14 12:09:51,674 INFO L175 Difference]: Start difference. First operand has 177 places, 154 transitions, 1629 flow. Second operand 9 states and 100 transitions. [2024-06-14 12:09:51,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 177 transitions, 2344 flow [2024-06-14 12:09:51,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 177 transitions, 2231 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:51,716 INFO L231 Difference]: Finished difference. Result has 179 places, 161 transitions, 1776 flow [2024-06-14 12:09:51,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1776, PETRI_PLACES=179, PETRI_TRANSITIONS=161} [2024-06-14 12:09:51,716 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-14 12:09:51,716 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 161 transitions, 1776 flow [2024-06-14 12:09:51,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:51,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:51,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:51,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:09:51,717 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 12:09:51,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:51,717 INFO L85 PathProgramCache]: Analyzing trace with hash 839236233, now seen corresponding path program 8 times [2024-06-14 12:09:51,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:51,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241948579] [2024-06-14 12:09:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:51,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:52,407 INFO 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 12:09:52,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:52,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241948579] [2024-06-14 12:09:52,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241948579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:52,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:52,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:52,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187378606] [2024-06-14 12:09:52,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:52,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:52,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:52,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:52,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:52,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:52,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 161 transitions, 1776 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:52,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:52,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:52,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:52,745 INFO L124 PetriNetUnfolderBase]: 436/780 cut-off events. [2024-06-14 12:09:52,746 INFO L125 PetriNetUnfolderBase]: For 26726/26726 co-relation queries the response was YES. [2024-06-14 12:09:52,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5183 conditions, 780 events. 436/780 cut-off events. For 26726/26726 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3644 event pairs, 96 based on Foata normal form. 4/783 useless extension candidates. Maximal degree in co-relation 5098. Up to 649 conditions per place. [2024-06-14 12:09:52,751 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 38 changer transitions 0/176 dead transitions. [2024-06-14 12:09:52,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 176 transitions, 2247 flow [2024-06-14 12:09:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:52,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:09:52,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 12:09:52,753 INFO L175 Difference]: Start difference. First operand has 179 places, 161 transitions, 1776 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:09:52,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 176 transitions, 2247 flow [2024-06-14 12:09:52,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 176 transitions, 2130 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-14 12:09:52,800 INFO L231 Difference]: Finished difference. Result has 184 places, 161 transitions, 1747 flow [2024-06-14 12:09:52,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1747, PETRI_PLACES=184, PETRI_TRANSITIONS=161} [2024-06-14 12:09:52,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-14 12:09:52,801 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 161 transitions, 1747 flow [2024-06-14 12:09:52,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:52,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:52,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:52,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:09:52,801 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 12:09:52,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1855603003, now seen corresponding path program 9 times [2024-06-14 12:09:52,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:52,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814523482] [2024-06-14 12:09:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:52,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:53,543 INFO 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 12:09:53,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:53,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814523482] [2024-06-14 12:09:53,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814523482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:53,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:53,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:53,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194267191] [2024-06-14 12:09:53,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:53,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:53,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:53,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:53,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:53,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 161 transitions, 1747 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:53,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:53,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:53,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:53,904 INFO L124 PetriNetUnfolderBase]: 440/789 cut-off events. [2024-06-14 12:09:53,904 INFO L125 PetriNetUnfolderBase]: For 25930/25930 co-relation queries the response was YES. [2024-06-14 12:09:53,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 789 events. 440/789 cut-off events. For 25930/25930 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3693 event pairs, 59 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 5114. Up to 671 conditions per place. [2024-06-14 12:09:53,908 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 133 selfloop transitions, 39 changer transitions 0/174 dead transitions. [2024-06-14 12:09:53,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 174 transitions, 2143 flow [2024-06-14 12:09:53,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:09:53,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:09:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 12:09:53,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-14 12:09:53,910 INFO L175 Difference]: Start difference. First operand has 184 places, 161 transitions, 1747 flow. Second operand 8 states and 87 transitions. [2024-06-14 12:09:53,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 174 transitions, 2143 flow [2024-06-14 12:09:53,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 174 transitions, 2069 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:53,955 INFO L231 Difference]: Finished difference. Result has 185 places, 162 transitions, 1779 flow [2024-06-14 12:09:53,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1779, PETRI_PLACES=185, PETRI_TRANSITIONS=162} [2024-06-14 12:09:53,956 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-14 12:09:53,956 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 162 transitions, 1779 flow [2024-06-14 12:09:53,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:53,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:53,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:53,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:09:53,957 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 12:09:53,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:53,957 INFO L85 PathProgramCache]: Analyzing trace with hash 205816225, now seen corresponding path program 9 times [2024-06-14 12:09:53,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:53,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816104645] [2024-06-14 12:09:53,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:53,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:54,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:54,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816104645] [2024-06-14 12:09:54,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816104645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:54,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:54,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:54,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803924561] [2024-06-14 12:09:54,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:54,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:54,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:54,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:54,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:54,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:54,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 162 transitions, 1779 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:54,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:54,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:54,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:55,081 INFO L124 PetriNetUnfolderBase]: 446/799 cut-off events. [2024-06-14 12:09:55,082 INFO L125 PetriNetUnfolderBase]: For 27357/27357 co-relation queries the response was YES. [2024-06-14 12:09:55,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5322 conditions, 799 events. 446/799 cut-off events. For 27357/27357 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3751 event pairs, 59 based on Foata normal form. 2/800 useless extension candidates. Maximal degree in co-relation 5234. Up to 661 conditions per place. [2024-06-14 12:09:55,089 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 131 selfloop transitions, 45 changer transitions 0/178 dead transitions. [2024-06-14 12:09:55,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 178 transitions, 2227 flow [2024-06-14 12:09:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:09:55,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-14 12:09:55,090 INFO L175 Difference]: Start difference. First operand has 185 places, 162 transitions, 1779 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:09:55,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 178 transitions, 2227 flow [2024-06-14 12:09:55,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 178 transitions, 2133 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 12:09:55,141 INFO L231 Difference]: Finished difference. Result has 188 places, 164 transitions, 1843 flow [2024-06-14 12:09:55,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1843, PETRI_PLACES=188, PETRI_TRANSITIONS=164} [2024-06-14 12:09:55,142 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-14 12:09:55,142 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 164 transitions, 1843 flow [2024-06-14 12:09:55,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:55,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:55,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:55,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:09:55,142 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 12:09:55,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:55,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1004868857, now seen corresponding path program 10 times [2024-06-14 12:09:55,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:55,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357186610] [2024-06-14 12:09:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:55,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:55,900 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 12:09:55,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:55,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357186610] [2024-06-14 12:09:55,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357186610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:55,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:55,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:55,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250580584] [2024-06-14 12:09:55,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:55,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:55,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:55,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:55,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:55,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:55,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 164 transitions, 1843 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:55,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:55,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:55,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:56,214 INFO L124 PetriNetUnfolderBase]: 482/857 cut-off events. [2024-06-14 12:09:56,215 INFO L125 PetriNetUnfolderBase]: For 33422/33422 co-relation queries the response was YES. [2024-06-14 12:09:56,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6061 conditions, 857 events. 482/857 cut-off events. For 33422/33422 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4069 event pairs, 113 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 5972. Up to 761 conditions per place. [2024-06-14 12:09:56,221 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 29 changer transitions 0/185 dead transitions. [2024-06-14 12:09:56,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 185 transitions, 2594 flow [2024-06-14 12:09:56,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 12:09:56,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:09:56,222 INFO L175 Difference]: Start difference. First operand has 188 places, 164 transitions, 1843 flow. Second operand 9 states and 99 transitions. [2024-06-14 12:09:56,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 185 transitions, 2594 flow [2024-06-14 12:09:56,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 185 transitions, 2462 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:56,285 INFO L231 Difference]: Finished difference. Result has 190 places, 171 transitions, 1960 flow [2024-06-14 12:09:56,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1960, PETRI_PLACES=190, PETRI_TRANSITIONS=171} [2024-06-14 12:09:56,286 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-14 12:09:56,286 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 171 transitions, 1960 flow [2024-06-14 12:09:56,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:56,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:56,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:56,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:09:56,286 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 12:09:56,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:56,287 INFO L85 PathProgramCache]: Analyzing trace with hash -117720781, now seen corresponding path program 11 times [2024-06-14 12:09:56,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:56,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527376439] [2024-06-14 12:09:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:56,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:57,081 INFO 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 12:09:57,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:57,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527376439] [2024-06-14 12:09:57,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527376439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:57,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:57,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:57,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238239472] [2024-06-14 12:09:57,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:57,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:57,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:57,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:57,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:57,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:57,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 171 transitions, 1960 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:57,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:57,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:57,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:57,397 INFO L124 PetriNetUnfolderBase]: 474/845 cut-off events. [2024-06-14 12:09:57,397 INFO L125 PetriNetUnfolderBase]: For 32772/32772 co-relation queries the response was YES. [2024-06-14 12:09:57,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5791 conditions, 845 events. 474/845 cut-off events. For 32772/32772 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4011 event pairs, 111 based on Foata normal form. 4/846 useless extension candidates. Maximal degree in co-relation 5701. Up to 757 conditions per place. [2024-06-14 12:09:57,403 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 28 changer transitions 0/184 dead transitions. [2024-06-14 12:09:57,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 184 transitions, 2447 flow [2024-06-14 12:09:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:09:57,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-14 12:09:57,405 INFO L175 Difference]: Start difference. First operand has 190 places, 171 transitions, 1960 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:09:57,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 184 transitions, 2447 flow [2024-06-14 12:09:57,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 184 transitions, 2300 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-14 12:09:57,486 INFO L231 Difference]: Finished difference. Result has 195 places, 171 transitions, 1876 flow [2024-06-14 12:09:57,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1876, PETRI_PLACES=195, PETRI_TRANSITIONS=171} [2024-06-14 12:09:57,487 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-14 12:09:57,487 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 171 transitions, 1876 flow [2024-06-14 12:09:57,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:57,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:57,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:57,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:09:57,488 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 12:09:57,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1011131477, now seen corresponding path program 12 times [2024-06-14 12:09:57,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:57,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044585958] [2024-06-14 12:09:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:57,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:58,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:58,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:58,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044585958] [2024-06-14 12:09:58,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044585958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:58,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:58,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:58,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105732523] [2024-06-14 12:09:58,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:58,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:58,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:58,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:58,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:58,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:58,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 171 transitions, 1876 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:58,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:58,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:58,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:58,564 INFO L124 PetriNetUnfolderBase]: 533/941 cut-off events. [2024-06-14 12:09:58,565 INFO L125 PetriNetUnfolderBase]: For 43709/43709 co-relation queries the response was YES. [2024-06-14 12:09:58,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6908 conditions, 941 events. 533/941 cut-off events. For 43709/43709 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4535 event pairs, 119 based on Foata normal form. 4/942 useless extension candidates. Maximal degree in co-relation 6816. Up to 652 conditions per place. [2024-06-14 12:09:58,571 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 143 selfloop transitions, 52 changer transitions 0/197 dead transitions. [2024-06-14 12:09:58,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 197 transitions, 2832 flow [2024-06-14 12:09:58,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:58,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 12:09:58,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-14 12:09:58,572 INFO L175 Difference]: Start difference. First operand has 195 places, 171 transitions, 1876 flow. Second operand 9 states and 106 transitions. [2024-06-14 12:09:58,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 197 transitions, 2832 flow [2024-06-14 12:09:58,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 197 transitions, 2778 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:58,633 INFO L231 Difference]: Finished difference. Result has 198 places, 179 transitions, 2152 flow [2024-06-14 12:09:58,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2152, PETRI_PLACES=198, PETRI_TRANSITIONS=179} [2024-06-14 12:09:58,634 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-14 12:09:58,634 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 179 transitions, 2152 flow [2024-06-14 12:09:58,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:58,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:58,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:58,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:09:58,635 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 12:09:58,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:58,635 INFO L85 PathProgramCache]: Analyzing trace with hash 508387731, now seen corresponding path program 1 times [2024-06-14 12:09:58,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:58,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749680099] [2024-06-14 12:09:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:58,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:59,617 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 12:09:59,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:59,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749680099] [2024-06-14 12:09:59,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749680099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:59,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:59,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:59,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128796635] [2024-06-14 12:09:59,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:59,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:59,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:59,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:59,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:59,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:09:59,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 179 transitions, 2152 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:59,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:59,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:09:59,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:59,910 INFO L124 PetriNetUnfolderBase]: 529/934 cut-off events. [2024-06-14 12:09:59,911 INFO L125 PetriNetUnfolderBase]: For 42435/42435 co-relation queries the response was YES. [2024-06-14 12:09:59,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7024 conditions, 934 events. 529/934 cut-off events. For 42435/42435 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4496 event pairs, 125 based on Foata normal form. 1/932 useless extension candidates. Maximal degree in co-relation 6930. Up to 860 conditions per place. [2024-06-14 12:09:59,917 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 33 changer transitions 0/188 dead transitions. [2024-06-14 12:09:59,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 188 transitions, 2557 flow [2024-06-14 12:09:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 12:09:59,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32974910394265233 [2024-06-14 12:09:59,918 INFO L175 Difference]: Start difference. First operand has 198 places, 179 transitions, 2152 flow. Second operand 9 states and 92 transitions. [2024-06-14 12:09:59,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 188 transitions, 2557 flow [2024-06-14 12:09:59,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 188 transitions, 2427 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-14 12:09:59,992 INFO L231 Difference]: Finished difference. Result has 203 places, 180 transitions, 2110 flow [2024-06-14 12:09:59,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2110, PETRI_PLACES=203, PETRI_TRANSITIONS=180} [2024-06-14 12:09:59,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-14 12:09:59,993 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 180 transitions, 2110 flow [2024-06-14 12:09:59,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:59,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:59,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:59,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:09:59,993 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 12:09:59,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:59,993 INFO L85 PathProgramCache]: Analyzing trace with hash 280301883, now seen corresponding path program 10 times [2024-06-14 12:09:59,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:59,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684652486] [2024-06-14 12:09:59,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:59,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:00,882 INFO 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 12:10:00,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:00,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684652486] [2024-06-14 12:10:00,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684652486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:00,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:00,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:10:00,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864738559] [2024-06-14 12:10:00,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:00,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:10:00,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:00,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:10:00,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:10:00,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:00,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 180 transitions, 2110 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:00,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:00,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:00,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:01,202 INFO L124 PetriNetUnfolderBase]: 526/929 cut-off events. [2024-06-14 12:10:01,202 INFO L125 PetriNetUnfolderBase]: For 42075/42075 co-relation queries the response was YES. [2024-06-14 12:10:01,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6837 conditions, 929 events. 526/929 cut-off events. For 42075/42075 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4482 event pairs, 79 based on Foata normal form. 2/926 useless extension candidates. Maximal degree in co-relation 6741. Up to 805 conditions per place. [2024-06-14 12:10:01,210 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 148 selfloop transitions, 40 changer transitions 0/190 dead transitions. [2024-06-14 12:10:01,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 190 transitions, 2512 flow [2024-06-14 12:10:01,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:10:01,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:10:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-14 12:10:01,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-14 12:10:01,211 INFO L175 Difference]: Start difference. First operand has 203 places, 180 transitions, 2110 flow. Second operand 8 states and 86 transitions. [2024-06-14 12:10:01,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 190 transitions, 2512 flow [2024-06-14 12:10:01,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 190 transitions, 2423 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 12:10:01,290 INFO L231 Difference]: Finished difference. Result has 204 places, 180 transitions, 2105 flow [2024-06-14 12:10:01,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2105, PETRI_PLACES=204, PETRI_TRANSITIONS=180} [2024-06-14 12:10:01,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-14 12:10:01,291 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 180 transitions, 2105 flow [2024-06-14 12:10:01,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:01,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:01,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:01,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:10:01,291 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 12:10:01,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1004695877, now seen corresponding path program 13 times [2024-06-14 12:10:01,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:01,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995229004] [2024-06-14 12:10:01,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:02,078 INFO 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 12:10:02,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:02,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995229004] [2024-06-14 12:10:02,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995229004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:02,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:02,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:10:02,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415432484] [2024-06-14 12:10:02,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:02,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:10:02,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:02,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:10:02,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:10:02,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:02,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 180 transitions, 2105 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:02,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:02,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:02,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:02,438 INFO L124 PetriNetUnfolderBase]: 527/931 cut-off events. [2024-06-14 12:10:02,438 INFO L125 PetriNetUnfolderBase]: For 43157/43157 co-relation queries the response was YES. [2024-06-14 12:10:02,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6888 conditions, 931 events. 527/931 cut-off events. For 43157/43157 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4483 event pairs, 79 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 6791. Up to 797 conditions per place. [2024-06-14 12:10:02,445 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 149 selfloop transitions, 43 changer transitions 0/194 dead transitions. [2024-06-14 12:10:02,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 194 transitions, 2591 flow [2024-06-14 12:10:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:10:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:10:02,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:10:02,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:10:02,446 INFO L175 Difference]: Start difference. First operand has 204 places, 180 transitions, 2105 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:10:02,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 194 transitions, 2591 flow [2024-06-14 12:10:02,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 194 transitions, 2459 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:10:02,535 INFO L231 Difference]: Finished difference. Result has 206 places, 182 transitions, 2136 flow [2024-06-14 12:10:02,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2136, PETRI_PLACES=206, PETRI_TRANSITIONS=182} [2024-06-14 12:10:02,536 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-14 12:10:02,536 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 182 transitions, 2136 flow [2024-06-14 12:10:02,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:02,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:02,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:02,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:10:02,536 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 12:10:02,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:02,537 INFO L85 PathProgramCache]: Analyzing trace with hash 508380973, now seen corresponding path program 14 times [2024-06-14 12:10:02,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:02,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497211015] [2024-06-14 12:10:02,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:02,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:03,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:03,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497211015] [2024-06-14 12:10:03,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497211015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:03,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:03,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:10:03,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376978715] [2024-06-14 12:10:03,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:03,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:10:03,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:03,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:10:03,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:10:03,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:03,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 182 transitions, 2136 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:03,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:03,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:03,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:03,670 INFO L124 PetriNetUnfolderBase]: 533/941 cut-off events. [2024-06-14 12:10:03,671 INFO L125 PetriNetUnfolderBase]: For 44420/44420 co-relation queries the response was YES. [2024-06-14 12:10:03,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6974 conditions, 941 events. 533/941 cut-off events. For 44420/44420 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4545 event pairs, 118 based on Foata normal form. 2/940 useless extension candidates. Maximal degree in co-relation 6876. Up to 653 conditions per place. [2024-06-14 12:10:03,680 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 141 selfloop transitions, 60 changer transitions 0/203 dead transitions. [2024-06-14 12:10:03,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 203 transitions, 3027 flow [2024-06-14 12:10:03,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:10:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:10:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 12:10:03,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-14 12:10:03,682 INFO L175 Difference]: Start difference. First operand has 206 places, 182 transitions, 2136 flow. Second operand 9 states and 105 transitions. [2024-06-14 12:10:03,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 203 transitions, 3027 flow [2024-06-14 12:10:03,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 203 transitions, 2880 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-14 12:10:03,766 INFO L231 Difference]: Finished difference. Result has 209 places, 188 transitions, 2301 flow [2024-06-14 12:10:03,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2301, PETRI_PLACES=209, PETRI_TRANSITIONS=188} [2024-06-14 12:10:03,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-14 12:10:03,767 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 188 transitions, 2301 flow [2024-06-14 12:10:03,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:03,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:03,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:03,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:10:03,768 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 12:10:03,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:03,768 INFO L85 PathProgramCache]: Analyzing trace with hash 508626741, now seen corresponding path program 2 times [2024-06-14 12:10:03,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:03,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221771147] [2024-06-14 12:10:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:03,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:04,651 INFO 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 12:10:04,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:04,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221771147] [2024-06-14 12:10:04,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221771147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:04,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:04,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:10:04,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878321565] [2024-06-14 12:10:04,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:04,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:10:04,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:04,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:10:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:10:04,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:04,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 188 transitions, 2301 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:04,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:04,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:04,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:04,994 INFO L124 PetriNetUnfolderBase]: 531/938 cut-off events. [2024-06-14 12:10:04,994 INFO L125 PetriNetUnfolderBase]: For 43520/43520 co-relation queries the response was YES. [2024-06-14 12:10:04,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6989 conditions, 938 events. 531/938 cut-off events. For 43520/43520 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4521 event pairs, 170 based on Foata normal form. 1/938 useless extension candidates. Maximal degree in co-relation 6889. Up to 903 conditions per place. [2024-06-14 12:10:05,001 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 179 selfloop transitions, 15 changer transitions 0/196 dead transitions. [2024-06-14 12:10:05,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 196 transitions, 2722 flow [2024-06-14 12:10:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:10:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:10:05,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-14 12:10:05,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32661290322580644 [2024-06-14 12:10:05,002 INFO L175 Difference]: Start difference. First operand has 209 places, 188 transitions, 2301 flow. Second operand 8 states and 81 transitions. [2024-06-14 12:10:05,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 196 transitions, 2722 flow [2024-06-14 12:10:05,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 196 transitions, 2560 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-14 12:10:05,091 INFO L231 Difference]: Finished difference. Result has 212 places, 189 transitions, 2195 flow [2024-06-14 12:10:05,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2195, PETRI_PLACES=212, PETRI_TRANSITIONS=189} [2024-06-14 12:10:05,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-14 12:10:05,092 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 189 transitions, 2195 flow [2024-06-14 12:10:05,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:05,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:05,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:05,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:10:05,093 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 12:10:05,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash 110411009, now seen corresponding path program 15 times [2024-06-14 12:10:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804629453] [2024-06-14 12:10:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:05,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:05,994 INFO 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 12:10:05,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:05,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804629453] [2024-06-14 12:10:05,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804629453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:05,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:05,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:10:05,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5630000] [2024-06-14 12:10:05,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:05,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:10:05,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:05,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:10:05,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:10:06,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:06,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 189 transitions, 2195 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:06,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:06,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:06,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:06,344 INFO L124 PetriNetUnfolderBase]: 523/926 cut-off events. [2024-06-14 12:10:06,344 INFO L125 PetriNetUnfolderBase]: For 42271/42271 co-relation queries the response was YES. [2024-06-14 12:10:06,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6543 conditions, 926 events. 523/926 cut-off events. For 42271/42271 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4480 event pairs, 163 based on Foata normal form. 4/929 useless extension candidates. Maximal degree in co-relation 6442. Up to 868 conditions per place. [2024-06-14 12:10:06,351 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 178 selfloop transitions, 20 changer transitions 0/200 dead transitions. [2024-06-14 12:10:06,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 200 transitions, 2717 flow [2024-06-14 12:10:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:10:06,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:10:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 12:10:06,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-14 12:10:06,352 INFO L175 Difference]: Start difference. First operand has 212 places, 189 transitions, 2195 flow. Second operand 9 states and 94 transitions. [2024-06-14 12:10:06,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 200 transitions, 2717 flow [2024-06-14 12:10:06,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 200 transitions, 2616 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-14 12:10:06,447 INFO L231 Difference]: Finished difference. Result has 215 places, 189 transitions, 2141 flow [2024-06-14 12:10:06,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2141, PETRI_PLACES=215, PETRI_TRANSITIONS=189} [2024-06-14 12:10:06,447 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-14 12:10:06,447 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 189 transitions, 2141 flow [2024-06-14 12:10:06,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:06,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:06,448 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 12:10:06,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:10:06,448 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 12:10:06,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash 406428153, now seen corresponding path program 1 times [2024-06-14 12:10:06,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:06,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406402726] [2024-06-14 12:10:06,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:06,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:07,353 INFO 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 12:10:07,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:07,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406402726] [2024-06-14 12:10:07,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406402726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:07,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:07,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:07,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969658115] [2024-06-14 12:10:07,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:07,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:07,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:07,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:07,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:07,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 189 transitions, 2141 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:07,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:07,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:07,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:07,729 INFO L124 PetriNetUnfolderBase]: 527/933 cut-off events. [2024-06-14 12:10:07,729 INFO L125 PetriNetUnfolderBase]: For 42332/42332 co-relation queries the response was YES. [2024-06-14 12:10:07,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6541 conditions, 933 events. 527/933 cut-off events. For 42332/42332 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4522 event pairs, 82 based on Foata normal form. 2/934 useless extension candidates. Maximal degree in co-relation 6439. Up to 812 conditions per place. [2024-06-14 12:10:07,738 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 27 changer transitions 0/208 dead transitions. [2024-06-14 12:10:07,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 208 transitions, 2621 flow [2024-06-14 12:10:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 12:10:07,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-14 12:10:07,739 INFO L175 Difference]: Start difference. First operand has 215 places, 189 transitions, 2141 flow. Second operand 10 states and 102 transitions. [2024-06-14 12:10:07,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 208 transitions, 2621 flow [2024-06-14 12:10:07,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 208 transitions, 2564 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:07,840 INFO L231 Difference]: Finished difference. Result has 217 places, 190 transitions, 2168 flow [2024-06-14 12:10:07,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2168, PETRI_PLACES=217, PETRI_TRANSITIONS=190} [2024-06-14 12:10:07,840 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-14 12:10:07,840 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 190 transitions, 2168 flow [2024-06-14 12:10:07,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:07,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:07,841 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 12:10:07,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:10:07,841 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 12:10:07,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash -357897663, now seen corresponding path program 2 times [2024-06-14 12:10:07,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:07,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070259308] [2024-06-14 12:10:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:07,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:08,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:08,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070259308] [2024-06-14 12:10:08,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070259308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:08,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:08,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:08,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598006586] [2024-06-14 12:10:08,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:08,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:08,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:08,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:08,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:08,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:08,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 190 transitions, 2168 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:08,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:08,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:08,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:09,186 INFO L124 PetriNetUnfolderBase]: 531/941 cut-off events. [2024-06-14 12:10:09,186 INFO L125 PetriNetUnfolderBase]: For 43471/43471 co-relation queries the response was YES. [2024-06-14 12:10:09,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6650 conditions, 941 events. 531/941 cut-off events. For 43471/43471 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4579 event pairs, 112 based on Foata normal form. 2/942 useless extension candidates. Maximal degree in co-relation 6547. Up to 855 conditions per place. [2024-06-14 12:10:09,197 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 182 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2024-06-14 12:10:09,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 209 transitions, 2654 flow [2024-06-14 12:10:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:09,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:10:09,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:10:09,198 INFO L175 Difference]: Start difference. First operand has 217 places, 190 transitions, 2168 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:10:09,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 209 transitions, 2654 flow [2024-06-14 12:10:09,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 209 transitions, 2580 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:09,314 INFO L231 Difference]: Finished difference. Result has 219 places, 191 transitions, 2176 flow [2024-06-14 12:10:09,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2176, PETRI_PLACES=219, PETRI_TRANSITIONS=191} [2024-06-14 12:10:09,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-14 12:10:09,314 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 191 transitions, 2176 flow [2024-06-14 12:10:09,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:09,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:09,315 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 12:10:09,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:10:09,315 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 12:10:09,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:09,316 INFO L85 PathProgramCache]: Analyzing trace with hash -300060963, now seen corresponding path program 3 times [2024-06-14 12:10:09,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:09,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438298793] [2024-06-14 12:10:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:09,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:10,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:10,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:10,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438298793] [2024-06-14 12:10:10,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438298793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:10,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:10,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:10,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79539950] [2024-06-14 12:10:10,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:10,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:10,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:10,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:10,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:10,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:10,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 191 transitions, 2176 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:10,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:10,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:10,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:11,025 INFO L124 PetriNetUnfolderBase]: 535/949 cut-off events. [2024-06-14 12:10:11,025 INFO L125 PetriNetUnfolderBase]: For 45948/45948 co-relation queries the response was YES. [2024-06-14 12:10:11,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6706 conditions, 949 events. 535/949 cut-off events. For 45948/45948 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4647 event pairs, 111 based on Foata normal form. 2/950 useless extension candidates. Maximal degree in co-relation 6602. Up to 861 conditions per place. [2024-06-14 12:10:11,032 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 176 selfloop transitions, 31 changer transitions 0/209 dead transitions. [2024-06-14 12:10:11,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 209 transitions, 2664 flow [2024-06-14 12:10:11,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:11,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:10:11,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:10:11,033 INFO L175 Difference]: Start difference. First operand has 219 places, 191 transitions, 2176 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:10:11,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 209 transitions, 2664 flow [2024-06-14 12:10:11,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 209 transitions, 2592 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:11,130 INFO L231 Difference]: Finished difference. Result has 221 places, 192 transitions, 2201 flow [2024-06-14 12:10:11,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2201, PETRI_PLACES=221, PETRI_TRANSITIONS=192} [2024-06-14 12:10:11,131 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-14 12:10:11,131 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 192 transitions, 2201 flow [2024-06-14 12:10:11,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:11,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:11,131 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 12:10:11,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:10:11,131 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 12:10:11,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:11,132 INFO L85 PathProgramCache]: Analyzing trace with hash -299672998, now seen corresponding path program 1 times [2024-06-14 12:10:11,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:11,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283732150] [2024-06-14 12:10:11,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:11,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:12,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:12,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283732150] [2024-06-14 12:10:12,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283732150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:12,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:12,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:12,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090488005] [2024-06-14 12:10:12,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:12,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:12,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:12,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:12,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:12,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:12,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 192 transitions, 2201 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:12,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:12,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:12,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:12,557 INFO L124 PetriNetUnfolderBase]: 538/954 cut-off events. [2024-06-14 12:10:12,557 INFO L125 PetriNetUnfolderBase]: For 46959/46959 co-relation queries the response was YES. [2024-06-14 12:10:12,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6792 conditions, 954 events. 538/954 cut-off events. For 46959/46959 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4679 event pairs, 109 based on Foata normal form. 1/954 useless extension candidates. Maximal degree in co-relation 6687. Up to 863 conditions per place. [2024-06-14 12:10:12,565 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 175 selfloop transitions, 34 changer transitions 0/211 dead transitions. [2024-06-14 12:10:12,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 211 transitions, 2739 flow [2024-06-14 12:10:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:10:12,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-14 12:10:12,566 INFO L175 Difference]: Start difference. First operand has 221 places, 192 transitions, 2201 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:10:12,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 211 transitions, 2739 flow [2024-06-14 12:10:12,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 211 transitions, 2654 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:12,669 INFO L231 Difference]: Finished difference. Result has 223 places, 194 transitions, 2268 flow [2024-06-14 12:10:12,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2268, PETRI_PLACES=223, PETRI_TRANSITIONS=194} [2024-06-14 12:10:12,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-14 12:10:12,670 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 194 transitions, 2268 flow [2024-06-14 12:10:12,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:12,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:12,670 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 12:10:12,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:10:12,670 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 12:10:12,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash -299805213, now seen corresponding path program 4 times [2024-06-14 12:10:12,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:12,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940469228] [2024-06-14 12:10:12,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:12,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:13,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:13,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940469228] [2024-06-14 12:10:13,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940469228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:13,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:13,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:13,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898418132] [2024-06-14 12:10:13,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:13,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:13,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:13,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:13,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:13,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:13,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 194 transitions, 2268 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:13,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:13,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:13,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:14,130 INFO L124 PetriNetUnfolderBase]: 542/962 cut-off events. [2024-06-14 12:10:14,130 INFO L125 PetriNetUnfolderBase]: For 49496/49496 co-relation queries the response was YES. [2024-06-14 12:10:14,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6883 conditions, 962 events. 542/962 cut-off events. For 49496/49496 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4720 event pairs, 112 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 6777. Up to 877 conditions per place. [2024-06-14 12:10:14,142 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 182 selfloop transitions, 28 changer transitions 0/212 dead transitions. [2024-06-14 12:10:14,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 212 transitions, 2762 flow [2024-06-14 12:10:14,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:14,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:10:14,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:10:14,143 INFO L175 Difference]: Start difference. First operand has 223 places, 194 transitions, 2268 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:10:14,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 212 transitions, 2762 flow [2024-06-14 12:10:14,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 212 transitions, 2640 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:14,259 INFO L231 Difference]: Finished difference. Result has 225 places, 195 transitions, 2238 flow [2024-06-14 12:10:14,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2238, PETRI_PLACES=225, PETRI_TRANSITIONS=195} [2024-06-14 12:10:14,259 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-14 12:10:14,259 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 195 transitions, 2238 flow [2024-06-14 12:10:14,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:14,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:14,259 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 12:10:14,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:10:14,260 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 12:10:14,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:14,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1772749235, now seen corresponding path program 1 times [2024-06-14 12:10:14,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:14,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56087816] [2024-06-14 12:10:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:14,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:15,622 INFO 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 12:10:15,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:15,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56087816] [2024-06-14 12:10:15,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56087816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:15,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:15,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:15,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838831158] [2024-06-14 12:10:15,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:15,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:15,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:15,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:15,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:15,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:15,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 195 transitions, 2238 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:15,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:15,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:15,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:16,175 INFO L124 PetriNetUnfolderBase]: 548/973 cut-off events. [2024-06-14 12:10:16,175 INFO L125 PetriNetUnfolderBase]: For 51673/51673 co-relation queries the response was YES. [2024-06-14 12:10:16,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6950 conditions, 973 events. 548/973 cut-off events. For 51673/51673 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4775 event pairs, 92 based on Foata normal form. 2/974 useless extension candidates. Maximal degree in co-relation 6843. Up to 882 conditions per place. [2024-06-14 12:10:16,186 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 181 selfloop transitions, 33 changer transitions 0/216 dead transitions. [2024-06-14 12:10:16,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 216 transitions, 2782 flow [2024-06-14 12:10:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 12:10:16,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-14 12:10:16,188 INFO L175 Difference]: Start difference. First operand has 225 places, 195 transitions, 2238 flow. Second operand 11 states and 115 transitions. [2024-06-14 12:10:16,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 216 transitions, 2782 flow [2024-06-14 12:10:16,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 216 transitions, 2700 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:16,296 INFO L231 Difference]: Finished difference. Result has 228 places, 197 transitions, 2293 flow [2024-06-14 12:10:16,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2293, PETRI_PLACES=228, PETRI_TRANSITIONS=197} [2024-06-14 12:10:16,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-14 12:10:16,297 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 197 transitions, 2293 flow [2024-06-14 12:10:16,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:16,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:16,297 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 12:10:16,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:10:16,298 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 12:10:16,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:16,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2062995917, now seen corresponding path program 5 times [2024-06-14 12:10:16,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:16,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443971190] [2024-06-14 12:10:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:16,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:17,154 INFO 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 12:10:17,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:17,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443971190] [2024-06-14 12:10:17,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443971190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:17,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:17,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:17,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231788581] [2024-06-14 12:10:17,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:17,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:17,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:17,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:17,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:17,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 197 transitions, 2293 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:17,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:17,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:17,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:17,560 INFO L124 PetriNetUnfolderBase]: 552/980 cut-off events. [2024-06-14 12:10:17,560 INFO L125 PetriNetUnfolderBase]: For 53316/53316 co-relation queries the response was YES. [2024-06-14 12:10:17,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7049 conditions, 980 events. 552/980 cut-off events. For 53316/53316 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4839 event pairs, 91 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 6941. Up to 894 conditions per place. [2024-06-14 12:10:17,567 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 189 selfloop transitions, 24 changer transitions 0/215 dead transitions. [2024-06-14 12:10:17,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 215 transitions, 2795 flow [2024-06-14 12:10:17,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:17,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:10:17,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:10:17,568 INFO L175 Difference]: Start difference. First operand has 228 places, 197 transitions, 2293 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:10:17,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 215 transitions, 2795 flow [2024-06-14 12:10:17,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 215 transitions, 2674 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-14 12:10:17,674 INFO L231 Difference]: Finished difference. Result has 229 places, 198 transitions, 2258 flow [2024-06-14 12:10:17,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2172, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2258, PETRI_PLACES=229, PETRI_TRANSITIONS=198} [2024-06-14 12:10:17,674 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-14 12:10:17,675 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 198 transitions, 2258 flow [2024-06-14 12:10:17,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:17,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:17,675 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 12:10:17,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:10:17,675 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 12:10:17,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -827338875, now seen corresponding path program 6 times [2024-06-14 12:10:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:17,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963021624] [2024-06-14 12:10:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:17,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:18,801 INFO 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 12:10:18,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:18,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963021624] [2024-06-14 12:10:18,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963021624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:18,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:18,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:10:18,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789661930] [2024-06-14 12:10:18,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:18,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:10:18,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:18,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:10:18,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:10:18,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:18,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 198 transitions, 2258 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:18,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:18,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:18,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:19,193 INFO L124 PetriNetUnfolderBase]: 556/988 cut-off events. [2024-06-14 12:10:19,193 INFO L125 PetriNetUnfolderBase]: For 55297/55297 co-relation queries the response was YES. [2024-06-14 12:10:19,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7077 conditions, 988 events. 556/988 cut-off events. For 55297/55297 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4899 event pairs, 93 based on Foata normal form. 2/989 useless extension candidates. Maximal degree in co-relation 6968. Up to 900 conditions per place. [2024-06-14 12:10:19,204 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 184 selfloop transitions, 29 changer transitions 0/215 dead transitions. [2024-06-14 12:10:19,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 215 transitions, 2762 flow [2024-06-14 12:10:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:10:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:10:19,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 12:10:19,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-14 12:10:19,209 INFO L175 Difference]: Start difference. First operand has 229 places, 198 transitions, 2258 flow. Second operand 9 states and 102 transitions. [2024-06-14 12:10:19,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 215 transitions, 2762 flow [2024-06-14 12:10:19,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 215 transitions, 2686 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:19,335 INFO L231 Difference]: Finished difference. Result has 230 places, 199 transitions, 2281 flow [2024-06-14 12:10:19,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2281, PETRI_PLACES=230, PETRI_TRANSITIONS=199} [2024-06-14 12:10:19,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-14 12:10:19,336 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 199 transitions, 2281 flow [2024-06-14 12:10:19,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:19,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:19,336 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 12:10:19,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:10:19,337 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 12:10:19,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:19,337 INFO L85 PathProgramCache]: Analyzing trace with hash -869425036, now seen corresponding path program 2 times [2024-06-14 12:10:19,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:19,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742001245] [2024-06-14 12:10:19,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:19,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:20,247 INFO 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 12:10:20,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:20,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742001245] [2024-06-14 12:10:20,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742001245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:20,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:20,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:20,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025359951] [2024-06-14 12:10:20,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:20,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:20,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:20,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:20,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:20,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:20,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 199 transitions, 2281 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:20,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:20,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:20,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:20,659 INFO L124 PetriNetUnfolderBase]: 559/993 cut-off events. [2024-06-14 12:10:20,659 INFO L125 PetriNetUnfolderBase]: For 55434/55434 co-relation queries the response was YES. [2024-06-14 12:10:20,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7156 conditions, 993 events. 559/993 cut-off events. For 55434/55434 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4941 event pairs, 93 based on Foata normal form. 1/993 useless extension candidates. Maximal degree in co-relation 7047. Up to 902 conditions per place. [2024-06-14 12:10:20,665 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 182 selfloop transitions, 33 changer transitions 0/217 dead transitions. [2024-06-14 12:10:20,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 217 transitions, 2835 flow [2024-06-14 12:10:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:10:20,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:10:20,666 INFO L175 Difference]: Start difference. First operand has 230 places, 199 transitions, 2281 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:10:20,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 217 transitions, 2835 flow [2024-06-14 12:10:20,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 217 transitions, 2748 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:10:20,782 INFO L231 Difference]: Finished difference. Result has 233 places, 201 transitions, 2350 flow [2024-06-14 12:10:20,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2350, PETRI_PLACES=233, PETRI_TRANSITIONS=201} [2024-06-14 12:10:20,783 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-14 12:10:20,783 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 201 transitions, 2350 flow [2024-06-14 12:10:20,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:20,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:20,783 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 12:10:20,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:10:20,784 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 12:10:20,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:20,784 INFO L85 PathProgramCache]: Analyzing trace with hash -869428911, now seen corresponding path program 7 times [2024-06-14 12:10:20,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:20,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204954986] [2024-06-14 12:10:20,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:20,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:21,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:21,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204954986] [2024-06-14 12:10:21,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204954986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:21,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:21,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:21,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68054985] [2024-06-14 12:10:21,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:21,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:21,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:21,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:21,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:21,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:21,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 201 transitions, 2350 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:21,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:21,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:21,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:22,250 INFO L124 PetriNetUnfolderBase]: 563/1001 cut-off events. [2024-06-14 12:10:22,250 INFO L125 PetriNetUnfolderBase]: For 59206/59206 co-relation queries the response was YES. [2024-06-14 12:10:22,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 1001 events. 563/1001 cut-off events. For 59206/59206 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5007 event pairs, 93 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 7137. Up to 916 conditions per place. [2024-06-14 12:10:22,261 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 189 selfloop transitions, 27 changer transitions 0/218 dead transitions. [2024-06-14 12:10:22,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 218 transitions, 2860 flow [2024-06-14 12:10:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:10:22,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:10:22,262 INFO L175 Difference]: Start difference. First operand has 233 places, 201 transitions, 2350 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:10:22,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 218 transitions, 2860 flow [2024-06-14 12:10:22,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 218 transitions, 2734 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:22,400 INFO L231 Difference]: Finished difference. Result has 235 places, 202 transitions, 2320 flow [2024-06-14 12:10:22,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2320, PETRI_PLACES=235, PETRI_TRANSITIONS=202} [2024-06-14 12:10:22,401 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-14 12:10:22,401 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 202 transitions, 2320 flow [2024-06-14 12:10:22,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:22,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:22,401 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 12:10:22,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:10:22,401 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 12:10:22,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash 484873899, now seen corresponding path program 2 times [2024-06-14 12:10:22,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:22,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950303357] [2024-06-14 12:10:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:22,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:23,381 INFO 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 12:10:23,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:23,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950303357] [2024-06-14 12:10:23,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950303357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:23,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:23,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:23,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511339301] [2024-06-14 12:10:23,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:23,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:23,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:23,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:23,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:23,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:23,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 202 transitions, 2320 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:23,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:23,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:23,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:23,831 INFO L124 PetriNetUnfolderBase]: 569/1012 cut-off events. [2024-06-14 12:10:23,831 INFO L125 PetriNetUnfolderBase]: For 60893/60893 co-relation queries the response was YES. [2024-06-14 12:10:23,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7317 conditions, 1012 events. 569/1012 cut-off events. For 60893/60893 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5072 event pairs, 95 based on Foata normal form. 2/1013 useless extension candidates. Maximal degree in co-relation 7205. Up to 921 conditions per place. [2024-06-14 12:10:23,839 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 189 selfloop transitions, 29 changer transitions 0/220 dead transitions. [2024-06-14 12:10:23,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 220 transitions, 2870 flow [2024-06-14 12:10:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:23,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:10:23,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:10:23,840 INFO L175 Difference]: Start difference. First operand has 235 places, 202 transitions, 2320 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:10:23,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 220 transitions, 2870 flow [2024-06-14 12:10:23,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 220 transitions, 2784 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:23,978 INFO L231 Difference]: Finished difference. Result has 237 places, 204 transitions, 2370 flow [2024-06-14 12:10:23,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2370, PETRI_PLACES=237, PETRI_TRANSITIONS=204} [2024-06-14 12:10:23,979 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-14 12:10:23,979 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 204 transitions, 2370 flow [2024-06-14 12:10:23,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:23,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:23,979 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 12:10:23,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:10:23,979 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 12:10:23,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:23,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1503674407, now seen corresponding path program 8 times [2024-06-14 12:10:23,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:23,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180012025] [2024-06-14 12:10:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:23,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:25,190 INFO 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 12:10:25,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:25,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180012025] [2024-06-14 12:10:25,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180012025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:25,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:25,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:25,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828611592] [2024-06-14 12:10:25,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:25,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:25,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:25,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:25,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:25,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:25,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 204 transitions, 2370 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:25,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:25,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:25,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:25,573 INFO L124 PetriNetUnfolderBase]: 573/1020 cut-off events. [2024-06-14 12:10:25,573 INFO L125 PetriNetUnfolderBase]: For 63170/63170 co-relation queries the response was YES. [2024-06-14 12:10:25,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7408 conditions, 1020 events. 573/1020 cut-off events. For 63170/63170 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5117 event pairs, 89 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 7295. Up to 918 conditions per place. [2024-06-14 12:10:25,582 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 184 selfloop transitions, 35 changer transitions 0/221 dead transitions. [2024-06-14 12:10:25,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 221 transitions, 2890 flow [2024-06-14 12:10:25,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:25,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:10:25,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-14 12:10:25,583 INFO L175 Difference]: Start difference. First operand has 237 places, 204 transitions, 2370 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:10:25,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 221 transitions, 2890 flow [2024-06-14 12:10:25,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 221 transitions, 2778 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:25,724 INFO L231 Difference]: Finished difference. Result has 239 places, 205 transitions, 2372 flow [2024-06-14 12:10:25,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2372, PETRI_PLACES=239, PETRI_TRANSITIONS=205} [2024-06-14 12:10:25,725 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-14 12:10:25,725 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 205 transitions, 2372 flow [2024-06-14 12:10:25,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:25,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:25,725 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 12:10:25,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:10:25,725 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 12:10:25,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1503524305, now seen corresponding path program 3 times [2024-06-14 12:10:25,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:25,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610500510] [2024-06-14 12:10:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:25,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:26,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:26,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610500510] [2024-06-14 12:10:26,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610500510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:26,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:26,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:26,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222303745] [2024-06-14 12:10:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:26,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:26,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:26,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:26,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:26,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:26,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 205 transitions, 2372 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:26,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:26,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:26,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:27,246 INFO L124 PetriNetUnfolderBase]: 579/1030 cut-off events. [2024-06-14 12:10:27,247 INFO L125 PetriNetUnfolderBase]: For 64974/64974 co-relation queries the response was YES. [2024-06-14 12:10:27,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7500 conditions, 1030 events. 579/1030 cut-off events. For 64974/64974 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5191 event pairs, 89 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 7386. Up to 918 conditions per place. [2024-06-14 12:10:27,259 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 184 selfloop transitions, 37 changer transitions 0/223 dead transitions. [2024-06-14 12:10:27,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 223 transitions, 2932 flow [2024-06-14 12:10:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 12:10:27,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-14 12:10:27,260 INFO L175 Difference]: Start difference. First operand has 239 places, 205 transitions, 2372 flow. Second operand 10 states and 109 transitions. [2024-06-14 12:10:27,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 223 transitions, 2932 flow [2024-06-14 12:10:27,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 223 transitions, 2828 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:27,407 INFO L231 Difference]: Finished difference. Result has 241 places, 207 transitions, 2424 flow [2024-06-14 12:10:27,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2268, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2424, PETRI_PLACES=241, PETRI_TRANSITIONS=207} [2024-06-14 12:10:27,407 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-14 12:10:27,407 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 207 transitions, 2424 flow [2024-06-14 12:10:27,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:27,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:27,408 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 12:10:27,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:10:27,408 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 12:10:27,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:27,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1503678127, now seen corresponding path program 9 times [2024-06-14 12:10:27,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:27,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353694496] [2024-06-14 12:10:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:27,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:28,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353694496] [2024-06-14 12:10:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353694496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:28,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:28,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:28,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849960278] [2024-06-14 12:10:28,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:28,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:28,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:28,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:28,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:28,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:28,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 207 transitions, 2424 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:28,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:28,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:28,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:28,781 INFO L124 PetriNetUnfolderBase]: 590/1051 cut-off events. [2024-06-14 12:10:28,781 INFO L125 PetriNetUnfolderBase]: For 71925/71925 co-relation queries the response was YES. [2024-06-14 12:10:28,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7854 conditions, 1051 events. 590/1051 cut-off events. For 71925/71925 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5346 event pairs, 89 based on Foata normal form. 2/1052 useless extension candidates. Maximal degree in co-relation 7739. Up to 901 conditions per place. [2024-06-14 12:10:28,791 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 180 selfloop transitions, 44 changer transitions 0/226 dead transitions. [2024-06-14 12:10:28,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 226 transitions, 3122 flow [2024-06-14 12:10:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:28,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:28,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 12:10:28,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:10:28,792 INFO L175 Difference]: Start difference. First operand has 241 places, 207 transitions, 2424 flow. Second operand 10 states and 110 transitions. [2024-06-14 12:10:28,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 226 transitions, 3122 flow [2024-06-14 12:10:28,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 226 transitions, 2988 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:28,947 INFO L231 Difference]: Finished difference. Result has 243 places, 209 transitions, 2464 flow [2024-06-14 12:10:28,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2464, PETRI_PLACES=243, PETRI_TRANSITIONS=209} [2024-06-14 12:10:28,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-14 12:10:28,947 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 209 transitions, 2464 flow [2024-06-14 12:10:28,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:28,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:28,948 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 12:10:28,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:10:28,948 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 12:10:28,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:28,948 INFO L85 PathProgramCache]: Analyzing trace with hash 587727903, now seen corresponding path program 10 times [2024-06-14 12:10:28,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:28,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851904079] [2024-06-14 12:10:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:28,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:29,885 INFO 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 12:10:29,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:29,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851904079] [2024-06-14 12:10:29,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851904079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:29,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:29,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:29,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222775727] [2024-06-14 12:10:29,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:29,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:29,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:29,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:29,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:29,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:29,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 209 transitions, 2464 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:29,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:29,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:29,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:30,288 INFO L124 PetriNetUnfolderBase]: 587/1045 cut-off events. [2024-06-14 12:10:30,288 INFO L125 PetriNetUnfolderBase]: For 69166/69166 co-relation queries the response was YES. [2024-06-14 12:10:30,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7663 conditions, 1045 events. 587/1045 cut-off events. For 69166/69166 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5303 event pairs, 141 based on Foata normal form. 2/1046 useless extension candidates. Maximal degree in co-relation 7547. Up to 1002 conditions per place. [2024-06-14 12:10:30,298 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 203 selfloop transitions, 18 changer transitions 0/223 dead transitions. [2024-06-14 12:10:30,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 223 transitions, 2942 flow [2024-06-14 12:10:30,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:30,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:30,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-14 12:10:30,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:10:30,301 INFO L175 Difference]: Start difference. First operand has 243 places, 209 transitions, 2464 flow. Second operand 10 states and 100 transitions. [2024-06-14 12:10:30,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 223 transitions, 2942 flow [2024-06-14 12:10:30,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 223 transitions, 2811 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-14 12:10:30,498 INFO L231 Difference]: Finished difference. Result has 247 places, 209 transitions, 2373 flow [2024-06-14 12:10:30,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2373, PETRI_PLACES=247, PETRI_TRANSITIONS=209} [2024-06-14 12:10:30,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-14 12:10:30,498 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 209 transitions, 2373 flow [2024-06-14 12:10:30,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:30,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:30,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:30,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:10:30,499 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 12:10:30,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1498161925, now seen corresponding path program 4 times [2024-06-14 12:10:30,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:30,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762444452] [2024-06-14 12:10:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:30,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:31,521 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 12:10:31,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:31,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762444452] [2024-06-14 12:10:31,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762444452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:31,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:31,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:31,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28600188] [2024-06-14 12:10:31,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:31,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:31,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:31,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:31,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:31,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:31,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 209 transitions, 2373 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:31,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:31,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:31,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:31,909 INFO L124 PetriNetUnfolderBase]: 593/1055 cut-off events. [2024-06-14 12:10:31,909 INFO L125 PetriNetUnfolderBase]: For 69747/69747 co-relation queries the response was YES. [2024-06-14 12:10:31,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7640 conditions, 1055 events. 593/1055 cut-off events. For 69747/69747 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5372 event pairs, 139 based on Foata normal form. 2/1056 useless extension candidates. Maximal degree in co-relation 7522. Up to 993 conditions per place. [2024-06-14 12:10:31,919 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 203 selfloop transitions, 24 changer transitions 0/229 dead transitions. [2024-06-14 12:10:31,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 229 transitions, 2937 flow [2024-06-14 12:10:31,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:31,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:31,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 12:10:31,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-14 12:10:31,920 INFO L175 Difference]: Start difference. First operand has 247 places, 209 transitions, 2373 flow. Second operand 11 states and 112 transitions. [2024-06-14 12:10:31,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 229 transitions, 2937 flow [2024-06-14 12:10:32,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 229 transitions, 2899 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 12:10:32,096 INFO L231 Difference]: Finished difference. Result has 251 places, 213 transitions, 2472 flow [2024-06-14 12:10:32,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2472, PETRI_PLACES=251, PETRI_TRANSITIONS=213} [2024-06-14 12:10:32,097 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-14 12:10:32,097 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 213 transitions, 2472 flow [2024-06-14 12:10:32,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:32,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:32,098 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 12:10:32,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:10:32,098 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 12:10:32,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1497952396, now seen corresponding path program 1 times [2024-06-14 12:10:32,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:32,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127973030] [2024-06-14 12:10:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:32,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:33,078 INFO 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 12:10:33,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:33,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127973030] [2024-06-14 12:10:33,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127973030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:33,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:33,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:33,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194632924] [2024-06-14 12:10:33,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:33,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:33,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:33,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:33,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:33,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:33,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 213 transitions, 2472 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:33,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:33,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:33,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:33,465 INFO L124 PetriNetUnfolderBase]: 597/1063 cut-off events. [2024-06-14 12:10:33,466 INFO L125 PetriNetUnfolderBase]: For 71986/71986 co-relation queries the response was YES. [2024-06-14 12:10:33,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7785 conditions, 1063 events. 597/1063 cut-off events. For 71986/71986 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5435 event pairs, 145 based on Foata normal form. 2/1064 useless extension candidates. Maximal degree in co-relation 7664. Up to 1020 conditions per place. [2024-06-14 12:10:33,475 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 20 changer transitions 0/228 dead transitions. [2024-06-14 12:10:33,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 228 transitions, 2982 flow [2024-06-14 12:10:33,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-14 12:10:33,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-14 12:10:33,477 INFO L175 Difference]: Start difference. First operand has 251 places, 213 transitions, 2472 flow. Second operand 11 states and 107 transitions. [2024-06-14 12:10:33,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 228 transitions, 2982 flow [2024-06-14 12:10:33,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 228 transitions, 2915 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:10:33,662 INFO L231 Difference]: Finished difference. Result has 255 places, 214 transitions, 2475 flow [2024-06-14 12:10:33,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2405, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2475, PETRI_PLACES=255, PETRI_TRANSITIONS=214} [2024-06-14 12:10:33,663 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-14 12:10:33,663 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 214 transitions, 2475 flow [2024-06-14 12:10:33,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:33,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:33,663 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 12:10:33,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:10:33,663 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 12:10:33,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:33,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1497960115, now seen corresponding path program 5 times [2024-06-14 12:10:33,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:33,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506202] [2024-06-14 12:10:33,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:33,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:34,521 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 12:10:34,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:34,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506202] [2024-06-14 12:10:34,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:34,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:34,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:34,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960772326] [2024-06-14 12:10:34,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:34,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:34,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:34,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:34,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:34,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 214 transitions, 2475 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:34,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:34,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:34,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:34,939 INFO L124 PetriNetUnfolderBase]: 593/1057 cut-off events. [2024-06-14 12:10:34,939 INFO L125 PetriNetUnfolderBase]: For 69310/69310 co-relation queries the response was YES. [2024-06-14 12:10:34,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7603 conditions, 1057 events. 593/1057 cut-off events. For 69310/69310 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5412 event pairs, 138 based on Foata normal form. 2/1058 useless extension candidates. Maximal degree in co-relation 7481. Up to 978 conditions per place. [2024-06-14 12:10:34,949 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 28 changer transitions 0/231 dead transitions. [2024-06-14 12:10:34,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 231 transitions, 2981 flow [2024-06-14 12:10:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 12:10:34,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-14 12:10:34,950 INFO L175 Difference]: Start difference. First operand has 255 places, 214 transitions, 2475 flow. Second operand 11 states and 115 transitions. [2024-06-14 12:10:34,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 231 transitions, 2981 flow [2024-06-14 12:10:35,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 231 transitions, 2889 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 12:10:35,140 INFO L231 Difference]: Finished difference. Result has 257 places, 214 transitions, 2444 flow [2024-06-14 12:10:35,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2444, PETRI_PLACES=257, PETRI_TRANSITIONS=214} [2024-06-14 12:10:35,141 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-14 12:10:35,141 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 214 transitions, 2444 flow [2024-06-14 12:10:35,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:35,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:35,141 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 12:10:35,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:10:35,141 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 12:10:35,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:35,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1973472853, now seen corresponding path program 11 times [2024-06-14 12:10:35,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:35,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029486830] [2024-06-14 12:10:35,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:35,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:36,310 INFO 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 12:10:36,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:36,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029486830] [2024-06-14 12:10:36,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029486830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:36,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:36,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:36,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297889340] [2024-06-14 12:10:36,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:36,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:36,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:36,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:36,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:36,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:36,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 214 transitions, 2444 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:36,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:36,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:36,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:36,763 INFO L124 PetriNetUnfolderBase]: 597/1065 cut-off events. [2024-06-14 12:10:36,763 INFO L125 PetriNetUnfolderBase]: For 71728/71728 co-relation queries the response was YES. [2024-06-14 12:10:36,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7681 conditions, 1065 events. 597/1065 cut-off events. For 71728/71728 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5465 event pairs, 102 based on Foata normal form. 2/1066 useless extension candidates. Maximal degree in co-relation 7558. Up to 896 conditions per place. [2024-06-14 12:10:36,772 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 196 selfloop transitions, 32 changer transitions 0/230 dead transitions. [2024-06-14 12:10:36,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 230 transitions, 2978 flow [2024-06-14 12:10:36,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:10:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:10:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-14 12:10:36,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:10:36,773 INFO L175 Difference]: Start difference. First operand has 257 places, 214 transitions, 2444 flow. Second operand 9 states and 93 transitions. [2024-06-14 12:10:36,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 230 transitions, 2978 flow [2024-06-14 12:10:36,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 230 transitions, 2811 flow, removed 46 selfloop flow, removed 11 redundant places. [2024-06-14 12:10:36,953 INFO L231 Difference]: Finished difference. Result has 255 places, 215 transitions, 2395 flow [2024-06-14 12:10:36,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2395, PETRI_PLACES=255, PETRI_TRANSITIONS=215} [2024-06-14 12:10:36,953 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-14 12:10:36,953 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 215 transitions, 2395 flow [2024-06-14 12:10:36,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:36,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:36,954 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 12:10:36,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:10:36,954 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 12:10:36,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:36,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1971598903, now seen corresponding path program 12 times [2024-06-14 12:10:36,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:36,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653767748] [2024-06-14 12:10:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:36,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:38,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653767748] [2024-06-14 12:10:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653767748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:38,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:38,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:38,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691132347] [2024-06-14 12:10:38,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:38,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:38,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:38,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 215 transitions, 2395 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:38,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:38,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:38,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:38,564 INFO L124 PetriNetUnfolderBase]: 601/1073 cut-off events. [2024-06-14 12:10:38,564 INFO L125 PetriNetUnfolderBase]: For 63710/63710 co-relation queries the response was YES. [2024-06-14 12:10:38,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7506 conditions, 1073 events. 601/1073 cut-off events. For 63710/63710 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5511 event pairs, 111 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 7382. Up to 938 conditions per place. [2024-06-14 12:10:38,579 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 191 selfloop transitions, 38 changer transitions 0/231 dead transitions. [2024-06-14 12:10:38,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 231 transitions, 2929 flow [2024-06-14 12:10:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:10:38,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:10:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 12:10:38,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-14 12:10:38,581 INFO L175 Difference]: Start difference. First operand has 255 places, 215 transitions, 2395 flow. Second operand 9 states and 95 transitions. [2024-06-14 12:10:38,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 231 transitions, 2929 flow [2024-06-14 12:10:38,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 231 transitions, 2819 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-14 12:10:38,760 INFO L231 Difference]: Finished difference. Result has 257 places, 216 transitions, 2409 flow [2024-06-14 12:10:38,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2409, PETRI_PLACES=257, PETRI_TRANSITIONS=216} [2024-06-14 12:10:38,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-14 12:10:38,761 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 216 transitions, 2409 flow [2024-06-14 12:10:38,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:38,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:38,761 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 12:10:38,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:10:38,761 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 12:10:38,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:38,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1971595028, now seen corresponding path program 3 times [2024-06-14 12:10:38,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:38,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322777051] [2024-06-14 12:10:38,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:38,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:39,793 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 12:10:39,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:39,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322777051] [2024-06-14 12:10:39,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322777051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:39,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:39,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:39,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859396949] [2024-06-14 12:10:39,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:39,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:39,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:39,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:39,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:39,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:39,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 216 transitions, 2409 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:39,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:39,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:39,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:40,247 INFO L124 PetriNetUnfolderBase]: 599/1070 cut-off events. [2024-06-14 12:10:40,247 INFO L125 PetriNetUnfolderBase]: For 55628/55628 co-relation queries the response was YES. [2024-06-14 12:10:40,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7297 conditions, 1070 events. 599/1070 cut-off events. For 55628/55628 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5494 event pairs, 111 based on Foata normal form. 1/1067 useless extension candidates. Maximal degree in co-relation 7172. Up to 979 conditions per place. [2024-06-14 12:10:40,261 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 196 selfloop transitions, 33 changer transitions 0/231 dead transitions. [2024-06-14 12:10:40,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 231 transitions, 2977 flow [2024-06-14 12:10:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:40,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:40,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:10:40,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:10:40,262 INFO L175 Difference]: Start difference. First operand has 257 places, 216 transitions, 2409 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:10:40,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 231 transitions, 2977 flow [2024-06-14 12:10:40,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 231 transitions, 2873 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 12:10:40,424 INFO L231 Difference]: Finished difference. Result has 260 places, 218 transitions, 2455 flow [2024-06-14 12:10:40,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2455, PETRI_PLACES=260, PETRI_TRANSITIONS=218} [2024-06-14 12:10:40,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-14 12:10:40,425 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 218 transitions, 2455 flow [2024-06-14 12:10:40,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:40,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:40,425 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 12:10:40,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:10:40,426 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 12:10:40,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:40,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1971595183, now seen corresponding path program 13 times [2024-06-14 12:10:40,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:40,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939686222] [2024-06-14 12:10:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:40,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:41,509 INFO 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 12:10:41,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:41,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939686222] [2024-06-14 12:10:41,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939686222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:41,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:41,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:41,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844175306] [2024-06-14 12:10:41,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:41,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:41,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:41,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:41,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:41,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:41,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 218 transitions, 2455 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:41,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:41,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:41,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:41,961 INFO L124 PetriNetUnfolderBase]: 603/1078 cut-off events. [2024-06-14 12:10:41,961 INFO L125 PetriNetUnfolderBase]: For 55616/55616 co-relation queries the response was YES. [2024-06-14 12:10:41,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 1078 events. 603/1078 cut-off events. For 55616/55616 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5558 event pairs, 115 based on Foata normal form. 2/1079 useless extension candidates. Maximal degree in co-relation 7164. Up to 934 conditions per place. [2024-06-14 12:10:41,975 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 185 selfloop transitions, 47 changer transitions 0/234 dead transitions. [2024-06-14 12:10:41,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 234 transitions, 2989 flow [2024-06-14 12:10:41,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:10:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:10:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:10:41,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:10:41,977 INFO L175 Difference]: Start difference. First operand has 260 places, 218 transitions, 2455 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:10:41,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 234 transitions, 2989 flow [2024-06-14 12:10:42,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 234 transitions, 2792 flow, removed 41 selfloop flow, removed 11 redundant places. [2024-06-14 12:10:42,146 INFO L231 Difference]: Finished difference. Result has 258 places, 219 transitions, 2395 flow [2024-06-14 12:10:42,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2395, PETRI_PLACES=258, PETRI_TRANSITIONS=219} [2024-06-14 12:10:42,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-14 12:10:42,147 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 219 transitions, 2395 flow [2024-06-14 12:10:42,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:42,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:42,147 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 12:10:42,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:10:42,147 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 12:10:42,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:42,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1884753271, now seen corresponding path program 6 times [2024-06-14 12:10:42,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:42,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490811133] [2024-06-14 12:10:42,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:42,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:43,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:43,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490811133] [2024-06-14 12:10:43,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490811133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:43,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:43,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:43,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585610496] [2024-06-14 12:10:43,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:43,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:43,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:43,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:43,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:43,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:43,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 219 transitions, 2395 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:43,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:43,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:43,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:43,975 INFO L124 PetriNetUnfolderBase]: 609/1089 cut-off events. [2024-06-14 12:10:43,975 INFO L125 PetriNetUnfolderBase]: For 57195/57195 co-relation queries the response was YES. [2024-06-14 12:10:43,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7320 conditions, 1089 events. 609/1089 cut-off events. For 57195/57195 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5633 event pairs, 95 based on Foata normal form. 2/1090 useless extension candidates. Maximal degree in co-relation 7198. Up to 938 conditions per place. [2024-06-14 12:10:43,986 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 188 selfloop transitions, 48 changer transitions 0/238 dead transitions. [2024-06-14 12:10:43,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 238 transitions, 2983 flow [2024-06-14 12:10:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:10:43,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:10:43,987 INFO L175 Difference]: Start difference. First operand has 258 places, 219 transitions, 2395 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:10:43,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 238 transitions, 2983 flow [2024-06-14 12:10:44,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 238 transitions, 2866 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:10:44,152 INFO L231 Difference]: Finished difference. Result has 261 places, 221 transitions, 2457 flow [2024-06-14 12:10:44,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2278, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2457, PETRI_PLACES=261, PETRI_TRANSITIONS=221} [2024-06-14 12:10:44,152 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-14 12:10:44,152 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 221 transitions, 2457 flow [2024-06-14 12:10:44,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:44,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:44,153 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 12:10:44,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:10:44,153 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 12:10:44,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:44,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2090693101, now seen corresponding path program 14 times [2024-06-14 12:10:44,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:44,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711659579] [2024-06-14 12:10:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:44,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:45,182 INFO 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 12:10:45,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:45,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711659579] [2024-06-14 12:10:45,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711659579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:45,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745233615] [2024-06-14 12:10:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:45,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:45,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:45,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:45,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 221 transitions, 2457 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:45,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:45,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:45,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:45,569 INFO L124 PetriNetUnfolderBase]: 613/1096 cut-off events. [2024-06-14 12:10:45,569 INFO L125 PetriNetUnfolderBase]: For 55410/55410 co-relation queries the response was YES. [2024-06-14 12:10:45,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7364 conditions, 1096 events. 613/1096 cut-off events. For 55410/55410 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5700 event pairs, 144 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 7241. Up to 1035 conditions per place. [2024-06-14 12:10:45,580 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 208 selfloop transitions, 24 changer transitions 0/234 dead transitions. [2024-06-14 12:10:45,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 234 transitions, 2979 flow [2024-06-14 12:10:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:10:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:10:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-14 12:10:45,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-14 12:10:45,581 INFO L175 Difference]: Start difference. First operand has 261 places, 221 transitions, 2457 flow. Second operand 9 states and 91 transitions. [2024-06-14 12:10:45,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 234 transitions, 2979 flow [2024-06-14 12:10:45,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 234 transitions, 2826 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:45,735 INFO L231 Difference]: Finished difference. Result has 262 places, 222 transitions, 2388 flow [2024-06-14 12:10:45,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2388, PETRI_PLACES=262, PETRI_TRANSITIONS=222} [2024-06-14 12:10:45,735 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-14 12:10:45,736 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 222 transitions, 2388 flow [2024-06-14 12:10:45,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:45,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:45,736 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 12:10:45,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:10:45,736 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 12:10:45,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:45,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1694635379, now seen corresponding path program 7 times [2024-06-14 12:10:45,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:45,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990291335] [2024-06-14 12:10:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:45,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:46,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:46,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990291335] [2024-06-14 12:10:46,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990291335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:46,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:46,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:46,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97005673] [2024-06-14 12:10:46,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:46,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:46,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:46,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:46,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:46,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:46,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 222 transitions, 2388 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:46,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:46,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:46,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:47,287 INFO L124 PetriNetUnfolderBase]: 619/1106 cut-off events. [2024-06-14 12:10:47,288 INFO L125 PetriNetUnfolderBase]: For 54801/54801 co-relation queries the response was YES. [2024-06-14 12:10:47,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7302 conditions, 1106 events. 619/1106 cut-off events. For 54801/54801 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5749 event pairs, 137 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 7178. Up to 970 conditions per place. [2024-06-14 12:10:47,303 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 45 changer transitions 0/241 dead transitions. [2024-06-14 12:10:47,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 241 transitions, 3082 flow [2024-06-14 12:10:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:10:47,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:10:47,304 INFO L175 Difference]: Start difference. First operand has 262 places, 222 transitions, 2388 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:10:47,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 241 transitions, 3082 flow [2024-06-14 12:10:47,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 241 transitions, 3008 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:47,465 INFO L231 Difference]: Finished difference. Result has 264 places, 224 transitions, 2456 flow [2024-06-14 12:10:47,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2456, PETRI_PLACES=264, PETRI_TRANSITIONS=224} [2024-06-14 12:10:47,466 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-14 12:10:47,466 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 224 transitions, 2456 flow [2024-06-14 12:10:47,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:47,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:47,466 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 12:10:47,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:10:47,466 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 12:10:47,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:47,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1694844908, now seen corresponding path program 2 times [2024-06-14 12:10:47,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:47,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600539040] [2024-06-14 12:10:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:47,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:48,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:48,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600539040] [2024-06-14 12:10:48,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600539040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:48,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:48,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:48,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872392340] [2024-06-14 12:10:48,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:48,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:48,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:48,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:48,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:48,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:48,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 224 transitions, 2456 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:48,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:48,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:48,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:48,866 INFO L124 PetriNetUnfolderBase]: 623/1114 cut-off events. [2024-06-14 12:10:48,866 INFO L125 PetriNetUnfolderBase]: For 55078/55078 co-relation queries the response was YES. [2024-06-14 12:10:48,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7393 conditions, 1114 events. 623/1114 cut-off events. For 55078/55078 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5810 event pairs, 150 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 7269. Up to 1053 conditions per place. [2024-06-14 12:10:48,877 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 208 selfloop transitions, 28 changer transitions 0/238 dead transitions. [2024-06-14 12:10:48,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 238 transitions, 2990 flow [2024-06-14 12:10:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-14 12:10:48,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161290322580645 [2024-06-14 12:10:48,878 INFO L175 Difference]: Start difference. First operand has 264 places, 224 transitions, 2456 flow. Second operand 10 states and 98 transitions. [2024-06-14 12:10:48,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 238 transitions, 2990 flow [2024-06-14 12:10:49,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 238 transitions, 2871 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:10:49,047 INFO L231 Difference]: Finished difference. Result has 266 places, 226 transitions, 2443 flow [2024-06-14 12:10:49,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2443, PETRI_PLACES=266, PETRI_TRANSITIONS=226} [2024-06-14 12:10:49,048 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-14 12:10:49,048 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 226 transitions, 2443 flow [2024-06-14 12:10:49,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:49,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:49,048 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 12:10:49,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:10:49,048 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 12:10:49,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:49,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1689122897, now seen corresponding path program 15 times [2024-06-14 12:10:49,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:49,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110940794] [2024-06-14 12:10:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:49,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:50,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:50,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110940794] [2024-06-14 12:10:50,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110940794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:50,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:50,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:50,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395459791] [2024-06-14 12:10:50,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:50,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:50,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:50,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:50,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:50,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 226 transitions, 2443 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:50,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:50,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:50,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:50,631 INFO L124 PetriNetUnfolderBase]: 627/1123 cut-off events. [2024-06-14 12:10:50,631 INFO L125 PetriNetUnfolderBase]: For 55242/55242 co-relation queries the response was YES. [2024-06-14 12:10:50,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 1123 events. 627/1123 cut-off events. For 55242/55242 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5850 event pairs, 90 based on Foata normal form. 2/1124 useless extension candidates. Maximal degree in co-relation 7271. Up to 989 conditions per place. [2024-06-14 12:10:50,642 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 196 selfloop transitions, 43 changer transitions 0/241 dead transitions. [2024-06-14 12:10:50,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 241 transitions, 2989 flow [2024-06-14 12:10:50,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:10:50,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:10:50,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:10:50,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:10:50,643 INFO L175 Difference]: Start difference. First operand has 266 places, 226 transitions, 2443 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:10:50,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 241 transitions, 2989 flow [2024-06-14 12:10:50,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 241 transitions, 2911 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 12:10:50,798 INFO L231 Difference]: Finished difference. Result has 268 places, 227 transitions, 2489 flow [2024-06-14 12:10:50,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2489, PETRI_PLACES=268, PETRI_TRANSITIONS=227} [2024-06-14 12:10:50,799 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-14 12:10:50,799 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 227 transitions, 2489 flow [2024-06-14 12:10:50,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:50,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:50,799 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 12:10:50,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:10:50,799 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 12:10:50,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1689119177, now seen corresponding path program 16 times [2024-06-14 12:10:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:50,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173012252] [2024-06-14 12:10:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:51,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:51,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173012252] [2024-06-14 12:10:51,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173012252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:51,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:51,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:51,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841742068] [2024-06-14 12:10:51,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:51,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:51,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:51,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:51,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:51,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:51,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 227 transitions, 2489 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:51,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:51,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:51,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:52,349 INFO L124 PetriNetUnfolderBase]: 631/1131 cut-off events. [2024-06-14 12:10:52,349 INFO L125 PetriNetUnfolderBase]: For 55572/55572 co-relation queries the response was YES. [2024-06-14 12:10:52,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7486 conditions, 1131 events. 631/1131 cut-off events. For 55572/55572 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5919 event pairs, 86 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 7360. Up to 997 conditions per place. [2024-06-14 12:10:52,358 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 199 selfloop transitions, 41 changer transitions 0/242 dead transitions. [2024-06-14 12:10:52,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 242 transitions, 3037 flow [2024-06-14 12:10:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:10:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:10:52,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 12:10:52,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-14 12:10:52,359 INFO L175 Difference]: Start difference. First operand has 268 places, 227 transitions, 2489 flow. Second operand 9 states and 95 transitions. [2024-06-14 12:10:52,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 242 transitions, 3037 flow [2024-06-14 12:10:52,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 242 transitions, 2923 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:10:52,530 INFO L231 Difference]: Finished difference. Result has 270 places, 228 transitions, 2497 flow [2024-06-14 12:10:52,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2497, PETRI_PLACES=270, PETRI_TRANSITIONS=228} [2024-06-14 12:10:52,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-14 12:10:52,531 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 228 transitions, 2497 flow [2024-06-14 12:10:52,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:52,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:52,531 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 12:10:52,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:10:52,531 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 12:10:52,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:52,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1694837189, now seen corresponding path program 8 times [2024-06-14 12:10:52,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:52,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136260668] [2024-06-14 12:10:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:52,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:53,617 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 12:10:53,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:53,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136260668] [2024-06-14 12:10:53,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136260668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:53,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:53,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:53,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149177917] [2024-06-14 12:10:53,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:53,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:53,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:53,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 228 transitions, 2497 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:53,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:53,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:53,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:54,099 INFO L124 PetriNetUnfolderBase]: 627/1124 cut-off events. [2024-06-14 12:10:54,099 INFO L125 PetriNetUnfolderBase]: For 51427/51427 co-relation queries the response was YES. [2024-06-14 12:10:54,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7276 conditions, 1124 events. 627/1124 cut-off events. For 51427/51427 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5901 event pairs, 139 based on Foata normal form. 2/1125 useless extension candidates. Maximal degree in co-relation 7149. Up to 991 conditions per place. [2024-06-14 12:10:54,109 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 43 changer transitions 0/243 dead transitions. [2024-06-14 12:10:54,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 243 transitions, 3021 flow [2024-06-14 12:10:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:10:54,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:10:54,110 INFO L175 Difference]: Start difference. First operand has 270 places, 228 transitions, 2497 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:10:54,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 243 transitions, 3021 flow [2024-06-14 12:10:54,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 243 transitions, 2891 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:54,267 INFO L231 Difference]: Finished difference. Result has 272 places, 228 transitions, 2461 flow [2024-06-14 12:10:54,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2461, PETRI_PLACES=272, PETRI_TRANSITIONS=228} [2024-06-14 12:10:54,267 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-14 12:10:54,267 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 228 transitions, 2461 flow [2024-06-14 12:10:54,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:54,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:54,267 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 12:10:54,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:10:54,268 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 12:10:54,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:54,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1689272999, now seen corresponding path program 9 times [2024-06-14 12:10:54,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:54,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525457651] [2024-06-14 12:10:54,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:54,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:55,410 INFO 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 12:10:55,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:55,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525457651] [2024-06-14 12:10:55,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525457651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:55,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:55,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:55,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688188018] [2024-06-14 12:10:55,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:55,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:55,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:55,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:55,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:55,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:55,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 228 transitions, 2461 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:55,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:55,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:55,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:55,872 INFO L124 PetriNetUnfolderBase]: 633/1135 cut-off events. [2024-06-14 12:10:55,873 INFO L125 PetriNetUnfolderBase]: For 51633/51633 co-relation queries the response was YES. [2024-06-14 12:10:55,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7326 conditions, 1135 events. 633/1135 cut-off events. For 51633/51633 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5991 event pairs, 89 based on Foata normal form. 2/1136 useless extension candidates. Maximal degree in co-relation 7199. Up to 981 conditions per place. [2024-06-14 12:10:55,883 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 49 changer transitions 0/246 dead transitions. [2024-06-14 12:10:55,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 246 transitions, 3063 flow [2024-06-14 12:10:55,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:55,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:55,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:10:55,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:10:55,884 INFO L175 Difference]: Start difference. First operand has 272 places, 228 transitions, 2461 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:10:55,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 246 transitions, 3063 flow [2024-06-14 12:10:56,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 246 transitions, 2922 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 12:10:56,043 INFO L231 Difference]: Finished difference. Result has 271 places, 230 transitions, 2498 flow [2024-06-14 12:10:56,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2498, PETRI_PLACES=271, PETRI_TRANSITIONS=230} [2024-06-14 12:10:56,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-14 12:10:56,043 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 230 transitions, 2498 flow [2024-06-14 12:10:56,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:56,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:56,043 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 12:10:56,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:10:56,044 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 12:10:56,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:56,044 INFO L85 PathProgramCache]: Analyzing trace with hash 104934963, now seen corresponding path program 17 times [2024-06-14 12:10:56,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:56,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642232397] [2024-06-14 12:10:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:56,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:57,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:57,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642232397] [2024-06-14 12:10:57,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642232397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:57,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:57,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:57,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910724455] [2024-06-14 12:10:57,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:57,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:57,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:57,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:57,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:57,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:57,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 230 transitions, 2498 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:57,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:57,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:57,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:57,413 INFO L124 PetriNetUnfolderBase]: 637/1143 cut-off events. [2024-06-14 12:10:57,413 INFO L125 PetriNetUnfolderBase]: For 50618/50618 co-relation queries the response was YES. [2024-06-14 12:10:57,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7362 conditions, 1143 events. 637/1143 cut-off events. For 50618/50618 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6045 event pairs, 154 based on Foata normal form. 2/1142 useless extension candidates. Maximal degree in co-relation 7235. Up to 1090 conditions per place. [2024-06-14 12:10:57,424 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 218 selfloop transitions, 21 changer transitions 0/241 dead transitions. [2024-06-14 12:10:57,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 241 transitions, 3032 flow [2024-06-14 12:10:57,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:10:57,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:10:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-14 12:10:57,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:10:57,425 INFO L175 Difference]: Start difference. First operand has 271 places, 230 transitions, 2498 flow. Second operand 9 states and 90 transitions. [2024-06-14 12:10:57,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 241 transitions, 3032 flow [2024-06-14 12:10:57,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 241 transitions, 2880 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:57,586 INFO L231 Difference]: Finished difference. Result has 272 places, 231 transitions, 2426 flow [2024-06-14 12:10:57,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2426, PETRI_PLACES=272, PETRI_TRANSITIONS=231} [2024-06-14 12:10:57,586 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-14 12:10:57,586 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 231 transitions, 2426 flow [2024-06-14 12:10:57,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:57,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:57,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:57,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:10:57,587 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 12:10:57,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 104940915, now seen corresponding path program 10 times [2024-06-14 12:10:57,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:57,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145588123] [2024-06-14 12:10:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:57,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:58,649 INFO 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 12:10:58,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:58,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145588123] [2024-06-14 12:10:58,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145588123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:58,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:58,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:58,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955033924] [2024-06-14 12:10:58,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:58,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:58,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:58,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:58,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:58,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:10:58,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 231 transitions, 2426 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:58,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:58,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:10:58,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:59,071 INFO L124 PetriNetUnfolderBase]: 643/1153 cut-off events. [2024-06-14 12:10:59,071 INFO L125 PetriNetUnfolderBase]: For 51517/51517 co-relation queries the response was YES. [2024-06-14 12:10:59,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7323 conditions, 1153 events. 643/1153 cut-off events. For 51517/51517 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6096 event pairs, 154 based on Foata normal form. 2/1152 useless extension candidates. Maximal degree in co-relation 7195. Up to 1081 conditions per place. [2024-06-14 12:10:59,082 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 217 selfloop transitions, 27 changer transitions 0/246 dead transitions. [2024-06-14 12:10:59,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 246 transitions, 2991 flow [2024-06-14 12:10:59,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:59,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 12:10:59,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-14 12:10:59,083 INFO L175 Difference]: Start difference. First operand has 272 places, 231 transitions, 2426 flow. Second operand 10 states and 102 transitions. [2024-06-14 12:10:59,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 246 transitions, 2991 flow [2024-06-14 12:10:59,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 246 transitions, 2921 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 12:10:59,239 INFO L231 Difference]: Finished difference. Result has 276 places, 234 transitions, 2472 flow [2024-06-14 12:10:59,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2472, PETRI_PLACES=276, PETRI_TRANSITIONS=234} [2024-06-14 12:10:59,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-14 12:10:59,240 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 234 transitions, 2472 flow [2024-06-14 12:10:59,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:59,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:59,240 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 12:10:59,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:10:59,240 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 12:10:59,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:59,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1412429888, now seen corresponding path program 3 times [2024-06-14 12:10:59,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:59,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645153576] [2024-06-14 12:10:59,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:59,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:00,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:00,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645153576] [2024-06-14 12:11:00,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645153576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:00,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:00,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:00,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317232476] [2024-06-14 12:11:00,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:00,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:00,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:00,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:00,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:00,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:00,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 234 transitions, 2472 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:00,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:00,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:00,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:00,993 INFO L124 PetriNetUnfolderBase]: 654/1174 cut-off events. [2024-06-14 12:11:00,993 INFO L125 PetriNetUnfolderBase]: For 57014/57014 co-relation queries the response was YES. [2024-06-14 12:11:01,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7622 conditions, 1174 events. 654/1174 cut-off events. For 57014/57014 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6258 event pairs, 219 based on Foata normal form. 2/1175 useless extension candidates. Maximal degree in co-relation 7492. Up to 1116 conditions per place. [2024-06-14 12:11:01,004 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 228 selfloop transitions, 19 changer transitions 0/249 dead transitions. [2024-06-14 12:11:01,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 249 transitions, 3170 flow [2024-06-14 12:11:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-14 12:11:01,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-14 12:11:01,005 INFO L175 Difference]: Start difference. First operand has 276 places, 234 transitions, 2472 flow. Second operand 11 states and 105 transitions. [2024-06-14 12:11:01,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 249 transitions, 3170 flow [2024-06-14 12:11:01,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 249 transitions, 3069 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:11:01,242 INFO L231 Difference]: Finished difference. Result has 278 places, 236 transitions, 2467 flow [2024-06-14 12:11:01,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2467, PETRI_PLACES=278, PETRI_TRANSITIONS=236} [2024-06-14 12:11:01,243 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-14 12:11:01,243 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 236 transitions, 2467 flow [2024-06-14 12:11:01,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:01,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:01,243 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 12:11:01,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:11:01,244 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 12:11:01,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:01,244 INFO L85 PathProgramCache]: Analyzing trace with hash 688159185, now seen corresponding path program 11 times [2024-06-14 12:11:01,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:01,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353566037] [2024-06-14 12:11:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:01,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:02,521 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 12:11:02,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:02,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353566037] [2024-06-14 12:11:02,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353566037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:02,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:02,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:02,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146401755] [2024-06-14 12:11:02,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:02,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:02,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:02,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:02,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:02,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:02,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 236 transitions, 2467 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:02,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:02,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:02,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:03,030 INFO L124 PetriNetUnfolderBase]: 650/1168 cut-off events. [2024-06-14 12:11:03,030 INFO L125 PetriNetUnfolderBase]: For 54713/54713 co-relation queries the response was YES. [2024-06-14 12:11:03,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7417 conditions, 1168 events. 650/1168 cut-off events. For 54713/54713 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6223 event pairs, 154 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 7288. Up to 1096 conditions per place. [2024-06-14 12:11:03,039 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 220 selfloop transitions, 27 changer transitions 0/249 dead transitions. [2024-06-14 12:11:03,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 249 transitions, 2997 flow [2024-06-14 12:11:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:11:03,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:11:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 12:11:03,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-14 12:11:03,040 INFO L175 Difference]: Start difference. First operand has 278 places, 236 transitions, 2467 flow. Second operand 10 states and 103 transitions. [2024-06-14 12:11:03,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 249 transitions, 2997 flow [2024-06-14 12:11:03,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 249 transitions, 2925 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-14 12:11:03,192 INFO L231 Difference]: Finished difference. Result has 282 places, 236 transitions, 2454 flow [2024-06-14 12:11:03,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2395, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2454, PETRI_PLACES=282, PETRI_TRANSITIONS=236} [2024-06-14 12:11:03,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-14 12:11:03,193 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 236 transitions, 2454 flow [2024-06-14 12:11:03,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:03,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:03,194 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 12:11:03,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:11:03,194 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 12:11:03,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:03,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1412698658, now seen corresponding path program 4 times [2024-06-14 12:11:03,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:03,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139556652] [2024-06-14 12:11:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:03,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:04,336 INFO 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 12:11:04,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:04,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139556652] [2024-06-14 12:11:04,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139556652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:04,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:04,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:04,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502195197] [2024-06-14 12:11:04,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:04,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:04,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:04,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:04,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:04,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:04,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 236 transitions, 2454 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:04,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:04,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:04,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:04,812 INFO L124 PetriNetUnfolderBase]: 647/1163 cut-off events. [2024-06-14 12:11:04,812 INFO L125 PetriNetUnfolderBase]: For 51784/51784 co-relation queries the response was YES. [2024-06-14 12:11:04,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7249 conditions, 1163 events. 647/1163 cut-off events. For 51784/51784 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6202 event pairs, 219 based on Foata normal form. 2/1164 useless extension candidates. Maximal degree in co-relation 7118. Up to 1122 conditions per place. [2024-06-14 12:11:04,828 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 227 selfloop transitions, 16 changer transitions 0/245 dead transitions. [2024-06-14 12:11:04,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 245 transitions, 2960 flow [2024-06-14 12:11:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:11:04,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:11:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-14 12:11:04,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31899641577060933 [2024-06-14 12:11:04,829 INFO L175 Difference]: Start difference. First operand has 282 places, 236 transitions, 2454 flow. Second operand 9 states and 89 transitions. [2024-06-14 12:11:04,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 245 transitions, 2960 flow [2024-06-14 12:11:05,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 245 transitions, 2866 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:11:05,002 INFO L231 Difference]: Finished difference. Result has 282 places, 236 transitions, 2396 flow [2024-06-14 12:11:05,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2396, PETRI_PLACES=282, PETRI_TRANSITIONS=236} [2024-06-14 12:11:05,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-14 12:11:05,003 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 236 transitions, 2396 flow [2024-06-14 12:11:05,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:05,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:05,003 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 12:11:05,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:11:05,003 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 12:11:05,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:05,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1163355707, now seen corresponding path program 12 times [2024-06-14 12:11:05,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:05,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418897060] [2024-06-14 12:11:05,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:05,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:06,272 INFO 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 12:11:06,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:06,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418897060] [2024-06-14 12:11:06,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418897060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:06,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:06,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:06,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110105345] [2024-06-14 12:11:06,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:06,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:06,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:06,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:06,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:06,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:06,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 236 transitions, 2396 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:06,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:06,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:06,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:06,734 INFO L124 PetriNetUnfolderBase]: 643/1157 cut-off events. [2024-06-14 12:11:06,734 INFO L125 PetriNetUnfolderBase]: For 48778/48778 co-relation queries the response was YES. [2024-06-14 12:11:06,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7020 conditions, 1157 events. 643/1157 cut-off events. For 48778/48778 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6165 event pairs, 216 based on Foata normal form. 2/1158 useless extension candidates. Maximal degree in co-relation 6888. Up to 1116 conditions per place. [2024-06-14 12:11:06,746 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 229 selfloop transitions, 17 changer transitions 0/248 dead transitions. [2024-06-14 12:11:06,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 248 transitions, 2922 flow [2024-06-14 12:11:06,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:11:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:11:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-14 12:11:06,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-14 12:11:06,747 INFO L175 Difference]: Start difference. First operand has 282 places, 236 transitions, 2396 flow. Second operand 10 states and 97 transitions. [2024-06-14 12:11:06,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 248 transitions, 2922 flow [2024-06-14 12:11:06,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 248 transitions, 2864 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:11:06,931 INFO L231 Difference]: Finished difference. Result has 285 places, 237 transitions, 2388 flow [2024-06-14 12:11:06,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2388, PETRI_PLACES=285, PETRI_TRANSITIONS=237} [2024-06-14 12:11:06,931 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-14 12:11:06,932 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 237 transitions, 2388 flow [2024-06-14 12:11:06,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:06,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:06,932 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 12:11:06,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:11:06,932 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 12:11:06,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash 105150444, now seen corresponding path program 5 times [2024-06-14 12:11:06,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:06,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6802359] [2024-06-14 12:11:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:06,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:08,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:08,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6802359] [2024-06-14 12:11:08,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6802359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:08,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:08,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:08,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785838154] [2024-06-14 12:11:08,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:08,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:08,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:08,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:08,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:08,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:08,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 237 transitions, 2388 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:08,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:08,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:08,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:08,575 INFO L124 PetriNetUnfolderBase]: 647/1165 cut-off events. [2024-06-14 12:11:08,575 INFO L125 PetriNetUnfolderBase]: For 50499/50499 co-relation queries the response was YES. [2024-06-14 12:11:08,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7096 conditions, 1165 events. 647/1165 cut-off events. For 50499/50499 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6228 event pairs, 158 based on Foata normal form. 2/1164 useless extension candidates. Maximal degree in co-relation 6962. Up to 1112 conditions per place. [2024-06-14 12:11:08,588 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 223 selfloop transitions, 23 changer transitions 0/248 dead transitions. [2024-06-14 12:11:08,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 248 transitions, 2930 flow [2024-06-14 12:11:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:11:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:11:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-14 12:11:08,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-14 12:11:08,590 INFO L175 Difference]: Start difference. First operand has 285 places, 237 transitions, 2388 flow. Second operand 10 states and 97 transitions. [2024-06-14 12:11:08,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 248 transitions, 2930 flow [2024-06-14 12:11:08,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 248 transitions, 2892 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 12:11:08,763 INFO L231 Difference]: Finished difference. Result has 287 places, 238 transitions, 2430 flow [2024-06-14 12:11:08,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2430, PETRI_PLACES=287, PETRI_TRANSITIONS=238} [2024-06-14 12:11:08,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-14 12:11:08,763 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 238 transitions, 2430 flow [2024-06-14 12:11:08,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:08,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:08,764 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 12:11:08,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:11:08,764 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 12:11:08,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:08,765 INFO L85 PathProgramCache]: Analyzing trace with hash 99428433, now seen corresponding path program 18 times [2024-06-14 12:11:08,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:08,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648102689] [2024-06-14 12:11:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:08,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:09,822 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 12:11:09,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:09,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648102689] [2024-06-14 12:11:09,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648102689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:09,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:09,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:09,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969839311] [2024-06-14 12:11:09,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:09,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:09,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:09,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:09,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:09,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:09,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 238 transitions, 2430 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:09,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:09,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:09,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:10,239 INFO L124 PetriNetUnfolderBase]: 651/1173 cut-off events. [2024-06-14 12:11:10,239 INFO L125 PetriNetUnfolderBase]: For 52432/52432 co-relation queries the response was YES. [2024-06-14 12:11:10,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7212 conditions, 1173 events. 651/1173 cut-off events. For 52432/52432 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6259 event pairs, 98 based on Foata normal form. 2/1170 useless extension candidates. Maximal degree in co-relation 7077. Up to 1041 conditions per place. [2024-06-14 12:11:10,250 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 207 selfloop transitions, 42 changer transitions 0/251 dead transitions. [2024-06-14 12:11:10,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 251 transitions, 2994 flow [2024-06-14 12:11:10,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:11:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:11:10,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 12:11:10,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-14 12:11:10,252 INFO L175 Difference]: Start difference. First operand has 287 places, 238 transitions, 2430 flow. Second operand 9 states and 95 transitions. [2024-06-14 12:11:10,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 251 transitions, 2994 flow [2024-06-14 12:11:10,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 251 transitions, 2898 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-14 12:11:10,535 INFO L231 Difference]: Finished difference. Result has 286 places, 239 transitions, 2458 flow [2024-06-14 12:11:10,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2458, PETRI_PLACES=286, PETRI_TRANSITIONS=239} [2024-06-14 12:11:10,535 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-06-14 12:11:10,536 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 239 transitions, 2458 flow [2024-06-14 12:11:10,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:10,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:10,536 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 12:11:10,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:11:10,536 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 12:11:10,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash 99578535, now seen corresponding path program 13 times [2024-06-14 12:11:10,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:10,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127472022] [2024-06-14 12:11:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:10,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:11,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:11,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127472022] [2024-06-14 12:11:11,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127472022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:11,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:11,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:11,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158492378] [2024-06-14 12:11:11,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:11,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:11,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:11,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:11,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:11,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:11,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 239 transitions, 2458 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:11,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:11,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:11,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:11,875 INFO L124 PetriNetUnfolderBase]: 652/1175 cut-off events. [2024-06-14 12:11:11,875 INFO L125 PetriNetUnfolderBase]: For 51976/51976 co-relation queries the response was YES. [2024-06-14 12:11:11,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7204 conditions, 1175 events. 652/1175 cut-off events. For 51976/51976 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6291 event pairs, 98 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 7069. Up to 1033 conditions per place. [2024-06-14 12:11:11,886 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 208 selfloop transitions, 45 changer transitions 0/255 dead transitions. [2024-06-14 12:11:11,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 255 transitions, 3074 flow [2024-06-14 12:11:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:11:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:11:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:11:11,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:11:11,888 INFO L175 Difference]: Start difference. First operand has 286 places, 239 transitions, 2458 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:11:11,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 255 transitions, 3074 flow [2024-06-14 12:11:12,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 255 transitions, 2960 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:11:12,065 INFO L231 Difference]: Finished difference. Result has 289 places, 241 transitions, 2513 flow [2024-06-14 12:11:12,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2513, PETRI_PLACES=289, PETRI_TRANSITIONS=241} [2024-06-14 12:11:12,065 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-14 12:11:12,065 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 241 transitions, 2513 flow [2024-06-14 12:11:12,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:12,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:12,065 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 12:11:12,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:11:12,066 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 12:11:12,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:12,066 INFO L85 PathProgramCache]: Analyzing trace with hash 99424713, now seen corresponding path program 19 times [2024-06-14 12:11:12,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:12,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872863509] [2024-06-14 12:11:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:12,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:13,182 INFO 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 12:11:13,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:13,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872863509] [2024-06-14 12:11:13,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872863509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:13,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:13,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:13,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453331492] [2024-06-14 12:11:13,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:13,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:13,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:13,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:13,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:13,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:13,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 241 transitions, 2513 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:13,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:13,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:13,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:13,612 INFO L124 PetriNetUnfolderBase]: 656/1183 cut-off events. [2024-06-14 12:11:13,612 INFO L125 PetriNetUnfolderBase]: For 53435/53435 co-relation queries the response was YES. [2024-06-14 12:11:13,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7278 conditions, 1183 events. 656/1183 cut-off events. For 53435/53435 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6359 event pairs, 96 based on Foata normal form. 2/1180 useless extension candidates. Maximal degree in co-relation 7142. Up to 1051 conditions per place. [2024-06-14 12:11:13,625 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 211 selfloop transitions, 41 changer transitions 0/254 dead transitions. [2024-06-14 12:11:13,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 254 transitions, 3083 flow [2024-06-14 12:11:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:11:13,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:11:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 12:11:13,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-14 12:11:13,626 INFO L175 Difference]: Start difference. First operand has 289 places, 241 transitions, 2513 flow. Second operand 9 states and 94 transitions. [2024-06-14 12:11:13,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 254 transitions, 3083 flow [2024-06-14 12:11:13,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 254 transitions, 2930 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-14 12:11:13,860 INFO L231 Difference]: Finished difference. Result has 290 places, 242 transitions, 2484 flow [2024-06-14 12:11:13,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2484, PETRI_PLACES=290, PETRI_TRANSITIONS=242} [2024-06-14 12:11:13,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-14 12:11:13,861 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 242 transitions, 2484 flow [2024-06-14 12:11:13,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:13,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:13,861 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 12:11:13,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:11:13,862 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 12:11:13,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:13,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1419848498, now seen corresponding path program 6 times [2024-06-14 12:11:13,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:13,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599610135] [2024-06-14 12:11:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:15,089 INFO 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 12:11:15,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:15,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599610135] [2024-06-14 12:11:15,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599610135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:15,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:15,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:15,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404967187] [2024-06-14 12:11:15,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:15,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:15,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:15,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:15,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:15,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:15,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 242 transitions, 2484 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:15,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:15,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:15,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:15,475 INFO L124 PetriNetUnfolderBase]: 653/1178 cut-off events. [2024-06-14 12:11:15,475 INFO L125 PetriNetUnfolderBase]: For 49423/49423 co-relation queries the response was YES. [2024-06-14 12:11:15,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7038 conditions, 1178 events. 653/1178 cut-off events. For 49423/49423 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6343 event pairs, 161 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 6901. Up to 1081 conditions per place. [2024-06-14 12:11:15,486 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 209 selfloop transitions, 40 changer transitions 0/251 dead transitions. [2024-06-14 12:11:15,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 251 transitions, 3002 flow [2024-06-14 12:11:15,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:11:15,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:11:15,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 12:11:15,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-14 12:11:15,487 INFO L175 Difference]: Start difference. First operand has 290 places, 242 transitions, 2484 flow. Second operand 9 states and 95 transitions. [2024-06-14 12:11:15,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 251 transitions, 3002 flow [2024-06-14 12:11:15,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 251 transitions, 2888 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 12:11:15,673 INFO L231 Difference]: Finished difference. Result has 292 places, 242 transitions, 2454 flow [2024-06-14 12:11:15,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2454, PETRI_PLACES=292, PETRI_TRANSITIONS=242} [2024-06-14 12:11:15,673 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-14 12:11:15,673 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 242 transitions, 2454 flow [2024-06-14 12:11:15,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:15,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:15,674 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 12:11:15,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:11:15,674 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 12:11:15,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1420063979, now seen corresponding path program 20 times [2024-06-14 12:11:15,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:15,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529757579] [2024-06-14 12:11:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:15,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:16,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529757579] [2024-06-14 12:11:16,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529757579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:16,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:16,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:16,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104115838] [2024-06-14 12:11:16,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:16,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:16,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:16,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:16,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:16,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 242 transitions, 2454 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:16,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:16,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:16,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:16,983 INFO L124 PetriNetUnfolderBase]: 650/1173 cut-off events. [2024-06-14 12:11:16,983 INFO L125 PetriNetUnfolderBase]: For 45106/45106 co-relation queries the response was YES. [2024-06-14 12:11:16,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6791 conditions, 1173 events. 650/1173 cut-off events. For 45106/45106 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6315 event pairs, 152 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 6653. Up to 1090 conditions per place. [2024-06-14 12:11:16,995 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 220 selfloop transitions, 31 changer transitions 0/253 dead transitions. [2024-06-14 12:11:16,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 253 transitions, 2984 flow [2024-06-14 12:11:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:11:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:11:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-14 12:11:16,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:11:16,996 INFO L175 Difference]: Start difference. First operand has 292 places, 242 transitions, 2454 flow. Second operand 9 states and 93 transitions. [2024-06-14 12:11:16,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 253 transitions, 2984 flow [2024-06-14 12:11:17,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 253 transitions, 2810 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-14 12:11:17,179 INFO L231 Difference]: Finished difference. Result has 290 places, 242 transitions, 2346 flow [2024-06-14 12:11:17,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2346, PETRI_PLACES=290, PETRI_TRANSITIONS=242} [2024-06-14 12:11:17,180 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-14 12:11:17,180 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 242 transitions, 2346 flow [2024-06-14 12:11:17,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:17,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:17,180 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 12:11:17,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:11:17,181 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 12:11:17,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:17,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1419856217, now seen corresponding path program 14 times [2024-06-14 12:11:17,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:17,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042971274] [2024-06-14 12:11:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:18,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042971274] [2024-06-14 12:11:18,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042971274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:18,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:18,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:18,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642417145] [2024-06-14 12:11:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:18,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:18,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:18,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:18,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:18,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:18,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 242 transitions, 2346 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:18,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:18,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:18,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:18,809 INFO L124 PetriNetUnfolderBase]: 656/1183 cut-off events. [2024-06-14 12:11:18,810 INFO L125 PetriNetUnfolderBase]: For 45945/45945 co-relation queries the response was YES. [2024-06-14 12:11:18,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6728 conditions, 1183 events. 656/1183 cut-off events. For 45945/45945 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6419 event pairs, 142 based on Foata normal form. 2/1182 useless extension candidates. Maximal degree in co-relation 6592. Up to 1018 conditions per place. [2024-06-14 12:11:18,821 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 208 selfloop transitions, 50 changer transitions 0/260 dead transitions. [2024-06-14 12:11:18,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 260 transitions, 2955 flow [2024-06-14 12:11:18,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:11:18,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:11:18,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:11:18,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:11:18,822 INFO L175 Difference]: Start difference. First operand has 290 places, 242 transitions, 2346 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:11:18,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 260 transitions, 2955 flow [2024-06-14 12:11:19,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 260 transitions, 2777 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-14 12:11:19,031 INFO L231 Difference]: Finished difference. Result has 292 places, 246 transitions, 2362 flow [2024-06-14 12:11:19,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2362, PETRI_PLACES=292, PETRI_TRANSITIONS=246} [2024-06-14 12:11:19,031 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-14 12:11:19,032 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 246 transitions, 2362 flow [2024-06-14 12:11:19,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:19,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:19,032 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 12:11:19,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:11:19,032 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 12:11:19,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:19,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1420058027, now seen corresponding path program 15 times [2024-06-14 12:11:19,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:19,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986440924] [2024-06-14 12:11:19,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:19,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:20,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:20,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986440924] [2024-06-14 12:11:20,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986440924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:20,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:20,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:20,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446912798] [2024-06-14 12:11:20,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:20,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:20,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:20,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:20,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 246 transitions, 2362 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:20,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:20,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:20,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:20,689 INFO L124 PetriNetUnfolderBase]: 652/1177 cut-off events. [2024-06-14 12:11:20,689 INFO L125 PetriNetUnfolderBase]: For 40193/40193 co-relation queries the response was YES. [2024-06-14 12:11:20,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6491 conditions, 1177 events. 652/1177 cut-off events. For 40193/40193 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6368 event pairs, 141 based on Foata normal form. 2/1176 useless extension candidates. Maximal degree in co-relation 6354. Up to 1012 conditions per place. [2024-06-14 12:11:20,707 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 51 changer transitions 0/259 dead transitions. [2024-06-14 12:11:20,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 259 transitions, 2912 flow [2024-06-14 12:11:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:11:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:11:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:11:20,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:11:20,709 INFO L175 Difference]: Start difference. First operand has 292 places, 246 transitions, 2362 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:11:20,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 259 transitions, 2912 flow [2024-06-14 12:11:20,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 259 transitions, 2771 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-14 12:11:20,896 INFO L231 Difference]: Finished difference. Result has 295 places, 246 transitions, 2328 flow [2024-06-14 12:11:20,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2328, PETRI_PLACES=295, PETRI_TRANSITIONS=246} [2024-06-14 12:11:20,896 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-14 12:11:20,896 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 246 transitions, 2328 flow [2024-06-14 12:11:20,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:20,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:20,897 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 12:11:20,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:11:20,897 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 12:11:20,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:20,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1975571086, now seen corresponding path program 1 times [2024-06-14 12:11:20,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:20,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075139318] [2024-06-14 12:11:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:20,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:22,013 INFO 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 12:11:22,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:22,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075139318] [2024-06-14 12:11:22,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075139318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:22,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:22,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:22,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003769399] [2024-06-14 12:11:22,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:22,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:22,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:22,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:22,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:22,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:22,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 246 transitions, 2328 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:22,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:22,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:22,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:22,456 INFO L124 PetriNetUnfolderBase]: 656/1184 cut-off events. [2024-06-14 12:11:22,456 INFO L125 PetriNetUnfolderBase]: For 42128/42128 co-relation queries the response was YES. [2024-06-14 12:11:22,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6468 conditions, 1184 events. 656/1184 cut-off events. For 42128/42128 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6399 event pairs, 111 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 6331. Up to 1055 conditions per place. [2024-06-14 12:11:22,467 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 237 selfloop transitions, 28 changer transitions 0/267 dead transitions. [2024-06-14 12:11:22,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 267 transitions, 2932 flow [2024-06-14 12:11:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 12:11:22,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:11:22,467 INFO L175 Difference]: Start difference. First operand has 295 places, 246 transitions, 2328 flow. Second operand 11 states and 110 transitions. [2024-06-14 12:11:22,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 267 transitions, 2932 flow [2024-06-14 12:11:22,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 267 transitions, 2797 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:11:22,618 INFO L231 Difference]: Finished difference. Result has 296 places, 247 transitions, 2281 flow [2024-06-14 12:11:22,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2281, PETRI_PLACES=296, PETRI_TRANSITIONS=247} [2024-06-14 12:11:22,619 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-14 12:11:22,619 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 247 transitions, 2281 flow [2024-06-14 12:11:22,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:22,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:22,619 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 12:11:22,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:11:22,620 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 12:11:22,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:22,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1790075298, now seen corresponding path program 2 times [2024-06-14 12:11:22,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:22,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256804163] [2024-06-14 12:11:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:22,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:23,798 INFO 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 12:11:23,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:23,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256804163] [2024-06-14 12:11:23,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256804163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:23,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:23,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855413991] [2024-06-14 12:11:23,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:23,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:23,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:23,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:23,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:23,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 247 transitions, 2281 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:23,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:23,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:23,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:24,323 INFO L124 PetriNetUnfolderBase]: 660/1192 cut-off events. [2024-06-14 12:11:24,324 INFO L125 PetriNetUnfolderBase]: For 42182/42182 co-relation queries the response was YES. [2024-06-14 12:11:24,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6476 conditions, 1192 events. 660/1192 cut-off events. For 42182/42182 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6462 event pairs, 146 based on Foata normal form. 2/1193 useless extension candidates. Maximal degree in co-relation 6338. Up to 1098 conditions per place. [2024-06-14 12:11:24,342 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 240 selfloop transitions, 26 changer transitions 0/268 dead transitions. [2024-06-14 12:11:24,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 268 transitions, 2891 flow [2024-06-14 12:11:24,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 12:11:24,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-14 12:11:24,343 INFO L175 Difference]: Start difference. First operand has 296 places, 247 transitions, 2281 flow. Second operand 11 states and 113 transitions. [2024-06-14 12:11:24,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 268 transitions, 2891 flow [2024-06-14 12:11:24,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 268 transitions, 2813 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:11:24,542 INFO L231 Difference]: Finished difference. Result has 298 places, 248 transitions, 2289 flow [2024-06-14 12:11:24,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2289, PETRI_PLACES=298, PETRI_TRANSITIONS=248} [2024-06-14 12:11:24,543 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-14 12:11:24,543 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 248 transitions, 2289 flow [2024-06-14 12:11:24,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:24,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:24,543 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 12:11:24,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:11:24,543 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 12:11:24,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:24,543 INFO L85 PathProgramCache]: Analyzing trace with hash -712069618, now seen corresponding path program 3 times [2024-06-14 12:11:24,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:24,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864491929] [2024-06-14 12:11:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:24,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:25,531 INFO 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 12:11:25,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:25,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864491929] [2024-06-14 12:11:25,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864491929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:25,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:25,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:25,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182518715] [2024-06-14 12:11:25,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:25,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:25,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:25,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:25,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:25,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:25,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 248 transitions, 2289 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:25,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:25,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:25,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:26,015 INFO L124 PetriNetUnfolderBase]: 664/1200 cut-off events. [2024-06-14 12:11:26,015 INFO L125 PetriNetUnfolderBase]: For 44722/44722 co-relation queries the response was YES. [2024-06-14 12:11:26,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6516 conditions, 1200 events. 664/1200 cut-off events. For 44722/44722 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6498 event pairs, 143 based on Foata normal form. 2/1201 useless extension candidates. Maximal degree in co-relation 6377. Up to 1107 conditions per place. [2024-06-14 12:11:26,026 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 237 selfloop transitions, 29 changer transitions 0/268 dead transitions. [2024-06-14 12:11:26,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 268 transitions, 2899 flow [2024-06-14 12:11:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:26,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 12:11:26,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-14 12:11:26,027 INFO L175 Difference]: Start difference. First operand has 298 places, 248 transitions, 2289 flow. Second operand 11 states and 113 transitions. [2024-06-14 12:11:26,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 268 transitions, 2899 flow [2024-06-14 12:11:26,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 268 transitions, 2823 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:11:26,201 INFO L231 Difference]: Finished difference. Result has 300 places, 249 transitions, 2307 flow [2024-06-14 12:11:26,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2307, PETRI_PLACES=300, PETRI_TRANSITIONS=249} [2024-06-14 12:11:26,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-14 12:11:26,202 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 249 transitions, 2307 flow [2024-06-14 12:11:26,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:26,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:26,202 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 12:11:26,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:11:26,202 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 12:11:26,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:26,202 INFO L85 PathProgramCache]: Analyzing trace with hash -700335808, now seen corresponding path program 4 times [2024-06-14 12:11:26,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:26,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855758906] [2024-06-14 12:11:26,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:26,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:27,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:27,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855758906] [2024-06-14 12:11:27,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855758906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:27,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:27,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:27,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282066139] [2024-06-14 12:11:27,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:27,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:27,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:27,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:27,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:27,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:27,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 249 transitions, 2307 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:27,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:27,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:27,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:27,871 INFO L124 PetriNetUnfolderBase]: 675/1221 cut-off events. [2024-06-14 12:11:27,871 INFO L125 PetriNetUnfolderBase]: For 52263/52263 co-relation queries the response was YES. [2024-06-14 12:11:27,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6842 conditions, 1221 events. 675/1221 cut-off events. For 52263/52263 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6665 event pairs, 143 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 6702. Up to 1103 conditions per place. [2024-06-14 12:11:27,883 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 234 selfloop transitions, 35 changer transitions 0/271 dead transitions. [2024-06-14 12:11:27,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 271 transitions, 3113 flow [2024-06-14 12:11:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:27,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 12:11:27,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-14 12:11:27,884 INFO L175 Difference]: Start difference. First operand has 300 places, 249 transitions, 2307 flow. Second operand 11 states and 117 transitions. [2024-06-14 12:11:27,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 271 transitions, 3113 flow [2024-06-14 12:11:28,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 271 transitions, 3029 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 12:11:28,052 INFO L231 Difference]: Finished difference. Result has 302 places, 251 transitions, 2363 flow [2024-06-14 12:11:28,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2223, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2363, PETRI_PLACES=302, PETRI_TRANSITIONS=251} [2024-06-14 12:11:28,053 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-14 12:11:28,053 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 251 transitions, 2363 flow [2024-06-14 12:11:28,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:28,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:28,053 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 12:11:28,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:11:28,053 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 12:11:28,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:28,054 INFO L85 PathProgramCache]: Analyzing trace with hash -699913402, now seen corresponding path program 1 times [2024-06-14 12:11:28,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:28,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706630197] [2024-06-14 12:11:28,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:28,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:29,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:29,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706630197] [2024-06-14 12:11:29,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706630197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:29,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:29,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:29,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973578745] [2024-06-14 12:11:29,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:29,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:29,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:29,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:29,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:29,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:29,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 251 transitions, 2363 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:29,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:29,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:29,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:30,284 INFO L124 PetriNetUnfolderBase]: 678/1226 cut-off events. [2024-06-14 12:11:30,284 INFO L125 PetriNetUnfolderBase]: For 51442/51442 co-relation queries the response was YES. [2024-06-14 12:11:30,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6910 conditions, 1226 events. 678/1226 cut-off events. For 51442/51442 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6693 event pairs, 146 based on Foata normal form. 1/1226 useless extension candidates. Maximal degree in co-relation 6769. Up to 1124 conditions per place. [2024-06-14 12:11:30,294 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 38 changer transitions 0/272 dead transitions. [2024-06-14 12:11:30,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 272 transitions, 3029 flow [2024-06-14 12:11:30,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:30,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:11:30,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-14 12:11:30,295 INFO L175 Difference]: Start difference. First operand has 302 places, 251 transitions, 2363 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:11:30,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 272 transitions, 3029 flow [2024-06-14 12:11:30,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 272 transitions, 2949 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 12:11:30,481 INFO L231 Difference]: Finished difference. Result has 306 places, 253 transitions, 2443 flow [2024-06-14 12:11:30,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2443, PETRI_PLACES=306, PETRI_TRANSITIONS=253} [2024-06-14 12:11:30,481 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-14 12:11:30,481 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 253 transitions, 2443 flow [2024-06-14 12:11:30,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:30,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:30,482 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 12:11:30,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:11:30,482 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 12:11:30,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash -699919168, now seen corresponding path program 5 times [2024-06-14 12:11:30,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:30,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208451657] [2024-06-14 12:11:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:30,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:31,835 INFO 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 12:11:31,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:31,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208451657] [2024-06-14 12:11:31,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208451657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:31,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:31,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:31,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244953415] [2024-06-14 12:11:31,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:31,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:31,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:31,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:31,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:31,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:31,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 253 transitions, 2443 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:31,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:31,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:31,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:32,362 INFO L124 PetriNetUnfolderBase]: 675/1221 cut-off events. [2024-06-14 12:11:32,363 INFO L125 PetriNetUnfolderBase]: For 48391/48391 co-relation queries the response was YES. [2024-06-14 12:11:32,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6744 conditions, 1221 events. 675/1221 cut-off events. For 48391/48391 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6671 event pairs, 146 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 6601. Up to 1122 conditions per place. [2024-06-14 12:11:32,374 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 235 selfloop transitions, 35 changer transitions 0/272 dead transitions. [2024-06-14 12:11:32,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 272 transitions, 3035 flow [2024-06-14 12:11:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 12:11:32,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-14 12:11:32,375 INFO L175 Difference]: Start difference. First operand has 306 places, 253 transitions, 2443 flow. Second operand 11 states and 115 transitions. [2024-06-14 12:11:32,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 272 transitions, 3035 flow [2024-06-14 12:11:32,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 272 transitions, 2877 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-14 12:11:32,579 INFO L231 Difference]: Finished difference. Result has 308 places, 253 transitions, 2360 flow [2024-06-14 12:11:32,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2360, PETRI_PLACES=308, PETRI_TRANSITIONS=253} [2024-06-14 12:11:32,580 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-14 12:11:32,580 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 253 transitions, 2360 flow [2024-06-14 12:11:32,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:32,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:32,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:11:32,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:11:32,580 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 12:11:32,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:32,581 INFO L85 PathProgramCache]: Analyzing trace with hash -229936014, now seen corresponding path program 1 times [2024-06-14 12:11:32,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:32,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168633621] [2024-06-14 12:11:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:32,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:33,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:33,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168633621] [2024-06-14 12:11:33,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168633621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:33,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:33,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:33,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670951663] [2024-06-14 12:11:33,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:33,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:33,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:33,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:33,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:33,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:33,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 253 transitions, 2360 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:33,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:33,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:33,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:34,234 INFO L124 PetriNetUnfolderBase]: 691/1258 cut-off events. [2024-06-14 12:11:34,234 INFO L125 PetriNetUnfolderBase]: For 73095/73095 co-relation queries the response was YES. [2024-06-14 12:11:34,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6871 conditions, 1258 events. 691/1258 cut-off events. For 73095/73095 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6912 event pairs, 127 based on Foata normal form. 10/1267 useless extension candidates. Maximal degree in co-relation 6727. Up to 1125 conditions per place. [2024-06-14 12:11:34,247 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 235 selfloop transitions, 30 changer transitions 11/278 dead transitions. [2024-06-14 12:11:34,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 278 transitions, 3052 flow [2024-06-14 12:11:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:11:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:11:34,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 12:11:34,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:11:34,248 INFO L175 Difference]: Start difference. First operand has 308 places, 253 transitions, 2360 flow. Second operand 12 states and 126 transitions. [2024-06-14 12:11:34,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 278 transitions, 3052 flow [2024-06-14 12:11:34,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 278 transitions, 2979 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:11:34,454 INFO L231 Difference]: Finished difference. Result has 310 places, 250 transitions, 2319 flow [2024-06-14 12:11:34,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2319, PETRI_PLACES=310, PETRI_TRANSITIONS=250} [2024-06-14 12:11:34,455 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-14 12:11:34,455 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 250 transitions, 2319 flow [2024-06-14 12:11:34,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:34,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:34,456 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 12:11:34,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:11:34,456 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 12:11:34,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:34,456 INFO L85 PathProgramCache]: Analyzing trace with hash 471636976, now seen corresponding path program 6 times [2024-06-14 12:11:34,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:34,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900430473] [2024-06-14 12:11:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:34,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:35,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:35,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900430473] [2024-06-14 12:11:35,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900430473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:35,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:35,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:35,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663732821] [2024-06-14 12:11:35,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:35,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:35,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:35,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:35,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:35,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:35,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 250 transitions, 2319 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:35,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:35,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:35,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:35,875 INFO L124 PetriNetUnfolderBase]: 669/1215 cut-off events. [2024-06-14 12:11:35,875 INFO L125 PetriNetUnfolderBase]: For 50950/50950 co-relation queries the response was YES. [2024-06-14 12:11:35,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 1215 events. 669/1215 cut-off events. For 50950/50950 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6663 event pairs, 121 based on Foata normal form. 2/1216 useless extension candidates. Maximal degree in co-relation 6513. Up to 1121 conditions per place. [2024-06-14 12:11:35,889 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 243 selfloop transitions, 25 changer transitions 0/270 dead transitions. [2024-06-14 12:11:35,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 270 transitions, 2937 flow [2024-06-14 12:11:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:35,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 12:11:35,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-14 12:11:35,890 INFO L175 Difference]: Start difference. First operand has 310 places, 250 transitions, 2319 flow. Second operand 11 states and 114 transitions. [2024-06-14 12:11:35,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 270 transitions, 2937 flow [2024-06-14 12:11:36,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 270 transitions, 2867 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:11:36,146 INFO L231 Difference]: Finished difference. Result has 307 places, 251 transitions, 2339 flow [2024-06-14 12:11:36,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2339, PETRI_PLACES=307, PETRI_TRANSITIONS=251} [2024-06-14 12:11:36,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-14 12:11:36,147 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 251 transitions, 2339 flow [2024-06-14 12:11:36,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:36,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:36,147 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 12:11:36,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:11:36,147 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 12:11:36,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:36,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1182491502, now seen corresponding path program 7 times [2024-06-14 12:11:36,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:36,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545867076] [2024-06-14 12:11:36,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:36,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:37,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:37,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545867076] [2024-06-14 12:11:37,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545867076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:37,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:37,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:37,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993408818] [2024-06-14 12:11:37,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:37,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:37,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:37,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:37,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:37,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:37,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 251 transitions, 2339 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:37,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:37,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:37,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:37,766 INFO L124 PetriNetUnfolderBase]: 673/1223 cut-off events. [2024-06-14 12:11:37,766 INFO L125 PetriNetUnfolderBase]: For 51714/51714 co-relation queries the response was YES. [2024-06-14 12:11:37,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6729 conditions, 1223 events. 673/1223 cut-off events. For 51714/51714 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6744 event pairs, 123 based on Foata normal form. 2/1224 useless extension candidates. Maximal degree in co-relation 6585. Up to 1130 conditions per place. [2024-06-14 12:11:37,779 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 240 selfloop transitions, 28 changer transitions 0/270 dead transitions. [2024-06-14 12:11:37,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 270 transitions, 2957 flow [2024-06-14 12:11:37,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:37,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 12:11:37,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-14 12:11:37,780 INFO L175 Difference]: Start difference. First operand has 307 places, 251 transitions, 2339 flow. Second operand 11 states and 114 transitions. [2024-06-14 12:11:37,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 270 transitions, 2957 flow [2024-06-14 12:11:38,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 270 transitions, 2877 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 12:11:38,015 INFO L231 Difference]: Finished difference. Result has 309 places, 252 transitions, 2357 flow [2024-06-14 12:11:38,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2357, PETRI_PLACES=309, PETRI_TRANSITIONS=252} [2024-06-14 12:11:38,016 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-14 12:11:38,016 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 252 transitions, 2357 flow [2024-06-14 12:11:38,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:38,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:38,016 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 12:11:38,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:11:38,016 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 12:11:38,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1394247408, now seen corresponding path program 8 times [2024-06-14 12:11:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:38,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709416967] [2024-06-14 12:11:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:38,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:39,161 INFO 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 12:11:39,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:39,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709416967] [2024-06-14 12:11:39,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709416967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:39,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:39,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000962667] [2024-06-14 12:11:39,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:39,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:39,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:39,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:39,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:39,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:39,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 252 transitions, 2357 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:39,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:39,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:39,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:39,715 INFO L124 PetriNetUnfolderBase]: 684/1244 cut-off events. [2024-06-14 12:11:39,715 INFO L125 PetriNetUnfolderBase]: For 60186/60186 co-relation queries the response was YES. [2024-06-14 12:11:39,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7083 conditions, 1244 events. 684/1244 cut-off events. For 60186/60186 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6885 event pairs, 122 based on Foata normal form. 2/1245 useless extension candidates. Maximal degree in co-relation 6938. Up to 1126 conditions per place. [2024-06-14 12:11:39,727 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 237 selfloop transitions, 34 changer transitions 0/273 dead transitions. [2024-06-14 12:11:39,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 273 transitions, 3187 flow [2024-06-14 12:11:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 12:11:39,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-14 12:11:39,728 INFO L175 Difference]: Start difference. First operand has 309 places, 252 transitions, 2357 flow. Second operand 11 states and 118 transitions. [2024-06-14 12:11:39,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 273 transitions, 3187 flow [2024-06-14 12:11:39,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 273 transitions, 3099 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 12:11:39,982 INFO L231 Difference]: Finished difference. Result has 311 places, 254 transitions, 2419 flow [2024-06-14 12:11:39,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2419, PETRI_PLACES=311, PETRI_TRANSITIONS=254} [2024-06-14 12:11:39,982 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-14 12:11:39,982 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 254 transitions, 2419 flow [2024-06-14 12:11:39,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:39,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:39,983 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 12:11:39,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:11:39,983 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 12:11:39,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:39,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1182371346, now seen corresponding path program 2 times [2024-06-14 12:11:39,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:39,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773970215] [2024-06-14 12:11:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:39,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:41,181 INFO 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 12:11:41,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:41,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773970215] [2024-06-14 12:11:41,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773970215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:41,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:41,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:41,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440525232] [2024-06-14 12:11:41,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:41,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:41,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:41,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:41,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:41,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:41,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 254 transitions, 2419 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:41,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:41,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:41,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:41,718 INFO L124 PetriNetUnfolderBase]: 687/1249 cut-off events. [2024-06-14 12:11:41,719 INFO L125 PetriNetUnfolderBase]: For 58377/58377 co-relation queries the response was YES. [2024-06-14 12:11:41,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 1249 events. 687/1249 cut-off events. For 58377/58377 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6896 event pairs, 124 based on Foata normal form. 1/1249 useless extension candidates. Maximal degree in co-relation 6997. Up to 1147 conditions per place. [2024-06-14 12:11:41,730 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 235 selfloop transitions, 37 changer transitions 0/274 dead transitions. [2024-06-14 12:11:41,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 274 transitions, 3091 flow [2024-06-14 12:11:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:41,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 12:11:41,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-14 12:11:41,732 INFO L175 Difference]: Start difference. First operand has 311 places, 254 transitions, 2419 flow. Second operand 11 states and 117 transitions. [2024-06-14 12:11:41,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 274 transitions, 3091 flow [2024-06-14 12:11:41,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 274 transitions, 3005 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 12:11:41,993 INFO L231 Difference]: Finished difference. Result has 315 places, 256 transitions, 2495 flow [2024-06-14 12:11:41,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2495, PETRI_PLACES=315, PETRI_TRANSITIONS=256} [2024-06-14 12:11:41,994 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-14 12:11:41,994 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 256 transitions, 2495 flow [2024-06-14 12:11:41,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:41,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:41,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:11:41,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:11:41,995 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 12:11:41,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1394252058, now seen corresponding path program 9 times [2024-06-14 12:11:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:41,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337336464] [2024-06-14 12:11:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:41,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:43,154 INFO 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 12:11:43,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:43,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337336464] [2024-06-14 12:11:43,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337336464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:43,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:43,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:43,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215347483] [2024-06-14 12:11:43,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:43,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:43,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:43,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:43,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:43,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 256 transitions, 2495 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:43,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:43,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:43,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:43,708 INFO L124 PetriNetUnfolderBase]: 684/1244 cut-off events. [2024-06-14 12:11:43,708 INFO L125 PetriNetUnfolderBase]: For 55452/55452 co-relation queries the response was YES. [2024-06-14 12:11:43,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6945 conditions, 1244 events. 684/1244 cut-off events. For 55452/55452 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6901 event pairs, 123 based on Foata normal form. 2/1245 useless extension candidates. Maximal degree in co-relation 6797. Up to 1145 conditions per place. [2024-06-14 12:11:43,721 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 238 selfloop transitions, 34 changer transitions 0/274 dead transitions. [2024-06-14 12:11:43,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 274 transitions, 3089 flow [2024-06-14 12:11:43,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:43,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:43,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:11:43,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-14 12:11:43,722 INFO L175 Difference]: Start difference. First operand has 315 places, 256 transitions, 2495 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:11:43,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 274 transitions, 3089 flow [2024-06-14 12:11:43,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 274 transitions, 2929 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-14 12:11:43,954 INFO L231 Difference]: Finished difference. Result has 317 places, 256 transitions, 2408 flow [2024-06-14 12:11:43,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2408, PETRI_PLACES=317, PETRI_TRANSITIONS=256} [2024-06-14 12:11:43,954 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-14 12:11:43,955 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 256 transitions, 2408 flow [2024-06-14 12:11:43,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:43,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:43,955 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 12:11:43,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:11:43,955 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 12:11:43,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:43,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1509723152, now seen corresponding path program 2 times [2024-06-14 12:11:43,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:43,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604149727] [2024-06-14 12:11:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:43,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:45,041 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 12:11:45,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:45,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604149727] [2024-06-14 12:11:45,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604149727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:45,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:45,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:45,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039156921] [2024-06-14 12:11:45,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:45,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:45,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:45,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:45,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:45,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 256 transitions, 2408 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:45,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:45,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:45,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:45,626 INFO L124 PetriNetUnfolderBase]: 700/1281 cut-off events. [2024-06-14 12:11:45,626 INFO L125 PetriNetUnfolderBase]: For 82247/82247 co-relation queries the response was YES. [2024-06-14 12:11:45,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7072 conditions, 1281 events. 700/1281 cut-off events. For 82247/82247 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7124 event pairs, 131 based on Foata normal form. 10/1290 useless extension candidates. Maximal degree in co-relation 6923. Up to 1148 conditions per place. [2024-06-14 12:11:45,640 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 240 selfloop transitions, 27 changer transitions 11/280 dead transitions. [2024-06-14 12:11:45,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 280 transitions, 3106 flow [2024-06-14 12:11:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:11:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:11:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 12:11:45,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-14 12:11:45,641 INFO L175 Difference]: Start difference. First operand has 317 places, 256 transitions, 2408 flow. Second operand 12 states and 127 transitions. [2024-06-14 12:11:45,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 280 transitions, 3106 flow [2024-06-14 12:11:45,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 280 transitions, 3035 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 12:11:45,876 INFO L231 Difference]: Finished difference. Result has 319 places, 253 transitions, 2365 flow [2024-06-14 12:11:45,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2365, PETRI_PLACES=319, PETRI_TRANSITIONS=253} [2024-06-14 12:11:45,876 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-14 12:11:45,876 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 253 transitions, 2365 flow [2024-06-14 12:11:45,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:45,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:45,877 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 12:11:45,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:11:45,877 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 12:11:45,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:45,877 INFO L85 PathProgramCache]: Analyzing trace with hash 409663658, now seen corresponding path program 10 times [2024-06-14 12:11:45,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:45,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73094217] [2024-06-14 12:11:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:45,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:46,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:46,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73094217] [2024-06-14 12:11:46,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73094217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:46,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:46,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450021433] [2024-06-14 12:11:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:46,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:46,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:46,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:46,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:46,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:46,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 253 transitions, 2365 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:46,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:46,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:46,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:47,336 INFO L124 PetriNetUnfolderBase]: 694/1274 cut-off events. [2024-06-14 12:11:47,336 INFO L125 PetriNetUnfolderBase]: For 92135/92135 co-relation queries the response was YES. [2024-06-14 12:11:47,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7088 conditions, 1274 events. 694/1274 cut-off events. For 92135/92135 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7103 event pairs, 167 based on Foata normal form. 12/1285 useless extension candidates. Maximal degree in co-relation 6938. Up to 1147 conditions per place. [2024-06-14 12:11:47,350 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 240 selfloop transitions, 26 changer transitions 7/275 dead transitions. [2024-06-14 12:11:47,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 275 transitions, 3083 flow [2024-06-14 12:11:47,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:47,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 12:11:47,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-14 12:11:47,351 INFO L175 Difference]: Start difference. First operand has 319 places, 253 transitions, 2365 flow. Second operand 11 states and 118 transitions. [2024-06-14 12:11:47,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 275 transitions, 3083 flow [2024-06-14 12:11:47,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 275 transitions, 3013 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-14 12:11:47,615 INFO L231 Difference]: Finished difference. Result has 317 places, 251 transitions, 2362 flow [2024-06-14 12:11:47,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2362, PETRI_PLACES=317, PETRI_TRANSITIONS=251} [2024-06-14 12:11:47,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-14 12:11:47,616 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 251 transitions, 2362 flow [2024-06-14 12:11:47,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:47,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:47,616 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 12:11:47,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:11:47,616 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 12:11:47,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash 808116726, now seen corresponding path program 3 times [2024-06-14 12:11:47,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:47,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82907999] [2024-06-14 12:11:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:47,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:48,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:48,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82907999] [2024-06-14 12:11:48,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82907999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:48,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:48,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:11:48,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309352992] [2024-06-14 12:11:48,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:48,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:11:48,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:11:48,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:11:48,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:48,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 251 transitions, 2362 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:48,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:48,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:48,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:48,916 INFO L124 PetriNetUnfolderBase]: 718/1326 cut-off events. [2024-06-14 12:11:48,916 INFO L125 PetriNetUnfolderBase]: For 120563/120563 co-relation queries the response was YES. [2024-06-14 12:11:48,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8461 conditions, 1326 events. 718/1326 cut-off events. For 120563/120563 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7417 event pairs, 177 based on Foata normal form. 8/1333 useless extension candidates. Maximal degree in co-relation 8311. Up to 1119 conditions per place. [2024-06-14 12:11:48,931 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 245 selfloop transitions, 22 changer transitions 8/277 dead transitions. [2024-06-14 12:11:48,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 277 transitions, 3314 flow [2024-06-14 12:11:48,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:48,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 12:11:48,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-14 12:11:48,932 INFO L175 Difference]: Start difference. First operand has 317 places, 251 transitions, 2362 flow. Second operand 11 states and 120 transitions. [2024-06-14 12:11:48,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 277 transitions, 3314 flow [2024-06-14 12:11:49,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 277 transitions, 3214 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-14 12:11:49,374 INFO L231 Difference]: Finished difference. Result has 317 places, 248 transitions, 2280 flow [2024-06-14 12:11:49,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2280, PETRI_PLACES=317, PETRI_TRANSITIONS=248} [2024-06-14 12:11:49,374 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-14 12:11:49,374 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 248 transitions, 2280 flow [2024-06-14 12:11:49,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:49,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:49,374 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 12:11:49,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:11:49,375 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 12:11:49,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:49,375 INFO L85 PathProgramCache]: Analyzing trace with hash 232532138, now seen corresponding path program 11 times [2024-06-14 12:11:49,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:49,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771308063] [2024-06-14 12:11:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:49,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:50,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:50,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771308063] [2024-06-14 12:11:50,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771308063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:50,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:50,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:50,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119232325] [2024-06-14 12:11:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:50,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:50,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:50,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:50,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:50,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:50,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 248 transitions, 2280 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:50,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:50,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:50,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:51,027 INFO L124 PetriNetUnfolderBase]: 703/1294 cut-off events. [2024-06-14 12:11:51,028 INFO L125 PetriNetUnfolderBase]: For 102784/102784 co-relation queries the response was YES. [2024-06-14 12:11:51,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8263 conditions, 1294 events. 703/1294 cut-off events. For 102784/102784 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7177 event pairs, 139 based on Foata normal form. 2/1295 useless extension candidates. Maximal degree in co-relation 8113. Up to 1184 conditions per place. [2024-06-14 12:11:51,041 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 228 selfloop transitions, 37 changer transitions 0/267 dead transitions. [2024-06-14 12:11:51,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 267 transitions, 2902 flow [2024-06-14 12:11:51,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:11:51,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-14 12:11:51,042 INFO L175 Difference]: Start difference. First operand has 317 places, 248 transitions, 2280 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:11:51,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 267 transitions, 2902 flow [2024-06-14 12:11:51,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 267 transitions, 2856 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:11:51,436 INFO L231 Difference]: Finished difference. Result has 315 places, 249 transitions, 2356 flow [2024-06-14 12:11:51,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2356, PETRI_PLACES=315, PETRI_TRANSITIONS=249} [2024-06-14 12:11:51,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-14 12:11:51,436 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 249 transitions, 2356 flow [2024-06-14 12:11:51,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:51,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:51,436 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 12:11:51,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 12:11:51,436 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 12:11:51,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:51,437 INFO L85 PathProgramCache]: Analyzing trace with hash 232527488, now seen corresponding path program 12 times [2024-06-14 12:11:51,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:51,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828892921] [2024-06-14 12:11:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:51,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:52,709 INFO 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 12:11:52,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:52,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828892921] [2024-06-14 12:11:52,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828892921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:52,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:52,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:52,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734805337] [2024-06-14 12:11:52,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:52,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:52,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:52,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:52,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:52,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:52,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 249 transitions, 2356 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:52,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:52,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:52,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:53,219 INFO L124 PetriNetUnfolderBase]: 707/1302 cut-off events. [2024-06-14 12:11:53,219 INFO L125 PetriNetUnfolderBase]: For 103952/103952 co-relation queries the response was YES. [2024-06-14 12:11:53,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8421 conditions, 1302 events. 707/1302 cut-off events. For 103952/103952 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7245 event pairs, 139 based on Foata normal form. 2/1303 useless extension candidates. Maximal degree in co-relation 8272. Up to 1178 conditions per place. [2024-06-14 12:11:53,233 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 228 selfloop transitions, 38 changer transitions 0/268 dead transitions. [2024-06-14 12:11:53,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 268 transitions, 2980 flow [2024-06-14 12:11:53,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:53,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 12:11:53,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-14 12:11:53,234 INFO L175 Difference]: Start difference. First operand has 315 places, 249 transitions, 2356 flow. Second operand 11 states and 117 transitions. [2024-06-14 12:11:53,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 268 transitions, 2980 flow [2024-06-14 12:11:53,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 268 transitions, 2868 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 12:11:53,590 INFO L231 Difference]: Finished difference. Result has 317 places, 250 transitions, 2370 flow [2024-06-14 12:11:53,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2370, PETRI_PLACES=317, PETRI_TRANSITIONS=250} [2024-06-14 12:11:53,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-14 12:11:53,590 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 250 transitions, 2370 flow [2024-06-14 12:11:53,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:53,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:53,591 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 12:11:53,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 12:11:53,591 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 12:11:53,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:53,591 INFO L85 PathProgramCache]: Analyzing trace with hash 635387826, now seen corresponding path program 4 times [2024-06-14 12:11:53,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:53,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128627604] [2024-06-14 12:11:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:53,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:11:54,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:54,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128627604] [2024-06-14 12:11:54,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128627604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:54,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:54,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:54,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867651322] [2024-06-14 12:11:54,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:54,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:54,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:54,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:54,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:54,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:54,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 250 transitions, 2370 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:54,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:54,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:54,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:55,269 INFO L124 PetriNetUnfolderBase]: 723/1338 cut-off events. [2024-06-14 12:11:55,269 INFO L125 PetriNetUnfolderBase]: For 134358/134358 co-relation queries the response was YES. [2024-06-14 12:11:55,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8617 conditions, 1338 events. 723/1338 cut-off events. For 134358/134358 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7488 event pairs, 145 based on Foata normal form. 10/1347 useless extension candidates. Maximal degree in co-relation 8467. Up to 1184 conditions per place. [2024-06-14 12:11:55,289 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 226 selfloop transitions, 35 changer transitions 11/274 dead transitions. [2024-06-14 12:11:55,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 274 transitions, 3056 flow [2024-06-14 12:11:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:11:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:11:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-14 12:11:55,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:11:55,290 INFO L175 Difference]: Start difference. First operand has 317 places, 250 transitions, 2370 flow. Second operand 12 states and 128 transitions. [2024-06-14 12:11:55,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 274 transitions, 3056 flow [2024-06-14 12:11:55,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 274 transitions, 2940 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 12:11:55,691 INFO L231 Difference]: Finished difference. Result has 320 places, 247 transitions, 2306 flow [2024-06-14 12:11:55,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2254, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2306, PETRI_PLACES=320, PETRI_TRANSITIONS=247} [2024-06-14 12:11:55,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-14 12:11:55,691 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 247 transitions, 2306 flow [2024-06-14 12:11:55,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:55,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:55,691 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 12:11:55,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 12:11:55,692 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 12:11:55,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:55,692 INFO L85 PathProgramCache]: Analyzing trace with hash 801441682, now seen corresponding path program 13 times [2024-06-14 12:11:55,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:55,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679721959] [2024-06-14 12:11:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:55,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:56,667 INFO 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 12:11:56,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:56,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679721959] [2024-06-14 12:11:56,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679721959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:56,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:56,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:56,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135470463] [2024-06-14 12:11:56,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:56,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:56,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:56,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:56,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:56,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:56,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 247 transitions, 2306 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:56,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:56,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:56,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:57,225 INFO L124 PetriNetUnfolderBase]: 694/1282 cut-off events. [2024-06-14 12:11:57,225 INFO L125 PetriNetUnfolderBase]: For 99482/99482 co-relation queries the response was YES. [2024-06-14 12:11:57,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8038 conditions, 1282 events. 694/1282 cut-off events. For 99482/99482 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7124 event pairs, 180 based on Foata normal form. 2/1283 useless extension candidates. Maximal degree in co-relation 7887. Up to 1206 conditions per place. [2024-06-14 12:11:57,239 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 237 selfloop transitions, 26 changer transitions 0/265 dead transitions. [2024-06-14 12:11:57,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 265 transitions, 2924 flow [2024-06-14 12:11:57,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:57,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 12:11:57,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-14 12:11:57,240 INFO L175 Difference]: Start difference. First operand has 320 places, 247 transitions, 2306 flow. Second operand 11 states and 113 transitions. [2024-06-14 12:11:57,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 265 transitions, 2924 flow [2024-06-14 12:11:57,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 265 transitions, 2846 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:11:57,599 INFO L231 Difference]: Finished difference. Result has 318 places, 248 transitions, 2332 flow [2024-06-14 12:11:57,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2332, PETRI_PLACES=318, PETRI_TRANSITIONS=248} [2024-06-14 12:11:57,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-14 12:11:57,599 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 248 transitions, 2332 flow [2024-06-14 12:11:57,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:57,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:57,600 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 12:11:57,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 12:11:57,600 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 12:11:57,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:57,600 INFO L85 PathProgramCache]: Analyzing trace with hash 630619282, now seen corresponding path program 14 times [2024-06-14 12:11:57,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:57,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905027573] [2024-06-14 12:11:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:57,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:11:58,606 INFO 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 12:11:58,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:11:58,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905027573] [2024-06-14 12:11:58,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905027573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:11:58,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:11:58,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:11:58,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968944173] [2024-06-14 12:11:58,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:11:58,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:11:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:11:58,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:11:58,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:11:58,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:11:58,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 248 transitions, 2332 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:58,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:11:58,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:11:58,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:11:59,076 INFO L124 PetriNetUnfolderBase]: 698/1291 cut-off events. [2024-06-14 12:11:59,076 INFO L125 PetriNetUnfolderBase]: For 100432/100432 co-relation queries the response was YES. [2024-06-14 12:11:59,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8134 conditions, 1291 events. 698/1291 cut-off events. For 100432/100432 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7180 event pairs, 138 based on Foata normal form. 2/1292 useless extension candidates. Maximal degree in co-relation 7983. Up to 1181 conditions per place. [2024-06-14 12:11:59,090 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 230 selfloop transitions, 35 changer transitions 0/267 dead transitions. [2024-06-14 12:11:59,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 267 transitions, 2956 flow [2024-06-14 12:11:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:11:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:11:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 12:11:59,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-14 12:11:59,091 INFO L175 Difference]: Start difference. First operand has 318 places, 248 transitions, 2332 flow. Second operand 11 states and 114 transitions. [2024-06-14 12:11:59,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 267 transitions, 2956 flow [2024-06-14 12:11:59,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 267 transitions, 2862 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 12:11:59,522 INFO L231 Difference]: Finished difference. Result has 320 places, 249 transitions, 2362 flow [2024-06-14 12:11:59,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2362, PETRI_PLACES=320, PETRI_TRANSITIONS=249} [2024-06-14 12:11:59,523 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-14 12:11:59,523 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 249 transitions, 2362 flow [2024-06-14 12:11:59,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:11:59,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:11:59,523 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 12:11:59,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 12:11:59,523 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 12:11:59,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:11:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash 801437032, now seen corresponding path program 15 times [2024-06-14 12:11:59,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:11:59,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935883858] [2024-06-14 12:11:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:11:59,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:11:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:12:00,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:00,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935883858] [2024-06-14 12:12:00,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935883858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:00,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:00,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:00,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632012348] [2024-06-14 12:12:00,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:00,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:00,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:00,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:00,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:00,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:00,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 249 transitions, 2362 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:00,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:00,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:00,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:00,971 INFO L124 PetriNetUnfolderBase]: 702/1298 cut-off events. [2024-06-14 12:12:00,971 INFO L125 PetriNetUnfolderBase]: For 103078/103078 co-relation queries the response was YES. [2024-06-14 12:12:00,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8210 conditions, 1298 events. 702/1298 cut-off events. For 103078/103078 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7270 event pairs, 184 based on Foata normal form. 2/1299 useless extension candidates. Maximal degree in co-relation 8058. Up to 1202 conditions per place. [2024-06-14 12:12:00,984 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 237 selfloop transitions, 28 changer transitions 0/267 dead transitions. [2024-06-14 12:12:00,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 267 transitions, 2986 flow [2024-06-14 12:12:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:12:00,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:12:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 12:12:00,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-14 12:12:00,985 INFO L175 Difference]: Start difference. First operand has 320 places, 249 transitions, 2362 flow. Second operand 11 states and 113 transitions. [2024-06-14 12:12:00,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 267 transitions, 2986 flow [2024-06-14 12:12:01,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 267 transitions, 2872 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 12:12:01,409 INFO L231 Difference]: Finished difference. Result has 322 places, 250 transitions, 2360 flow [2024-06-14 12:12:01,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2360, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2024-06-14 12:12:01,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-14 12:12:01,410 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 2360 flow [2024-06-14 12:12:01,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:01,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:01,410 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 12:12:01,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 12:12:01,410 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 12:12:01,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:01,411 INFO L85 PathProgramCache]: Analyzing trace with hash 801621606, now seen corresponding path program 5 times [2024-06-14 12:12:01,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:01,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332685088] [2024-06-14 12:12:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:02,349 INFO 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 12:12:02,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:02,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332685088] [2024-06-14 12:12:02,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332685088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:02,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:02,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:02,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592806309] [2024-06-14 12:12:02,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:02,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:02,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:02,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:02,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:02,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:02,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 2360 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:02,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:02,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:02,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:02,833 INFO L124 PetriNetUnfolderBase]: 718/1334 cut-off events. [2024-06-14 12:12:02,833 INFO L125 PetriNetUnfolderBase]: For 135162/135162 co-relation queries the response was YES. [2024-06-14 12:12:02,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8375 conditions, 1334 events. 718/1334 cut-off events. For 135162/135162 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7537 event pairs, 188 based on Foata normal form. 10/1343 useless extension candidates. Maximal degree in co-relation 8222. Up to 1212 conditions per place. [2024-06-14 12:12:02,848 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 235 selfloop transitions, 20 changer transitions 16/273 dead transitions. [2024-06-14 12:12:02,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 273 transitions, 3040 flow [2024-06-14 12:12:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:12:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:12:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 12:12:02,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:12:02,849 INFO L175 Difference]: Start difference. First operand has 322 places, 250 transitions, 2360 flow. Second operand 12 states and 126 transitions. [2024-06-14 12:12:02,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 273 transitions, 3040 flow [2024-06-14 12:12:03,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 273 transitions, 2938 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 12:12:03,273 INFO L231 Difference]: Finished difference. Result has 325 places, 244 transitions, 2239 flow [2024-06-14 12:12:03,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2239, PETRI_PLACES=325, PETRI_TRANSITIONS=244} [2024-06-14 12:12:03,273 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-14 12:12:03,273 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 244 transitions, 2239 flow [2024-06-14 12:12:03,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:03,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:03,274 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 12:12:03,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 12:12:03,274 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 12:12:03,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:03,275 INFO L85 PathProgramCache]: Analyzing trace with hash 807877716, now seen corresponding path program 6 times [2024-06-14 12:12:03,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:03,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677474995] [2024-06-14 12:12:03,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:03,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:04,383 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 12:12:04,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:04,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677474995] [2024-06-14 12:12:04,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677474995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:04,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:04,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:04,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128349987] [2024-06-14 12:12:04,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:04,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:04,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:04,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:04,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:04,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:04,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 244 transitions, 2239 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:04,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:04,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:04,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:04,874 INFO L124 PetriNetUnfolderBase]: 669/1243 cut-off events. [2024-06-14 12:12:04,874 INFO L125 PetriNetUnfolderBase]: For 96860/96860 co-relation queries the response was YES. [2024-06-14 12:12:04,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6847 conditions, 1243 events. 669/1243 cut-off events. For 96860/96860 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6936 event pairs, 171 based on Foata normal form. 10/1252 useless extension candidates. Maximal degree in co-relation 6693. Up to 1137 conditions per place. [2024-06-14 12:12:04,888 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 14 changer transitions 18/266 dead transitions. [2024-06-14 12:12:04,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 266 transitions, 2901 flow [2024-06-14 12:12:04,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:12:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:12:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-14 12:12:04,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-14 12:12:04,889 INFO L175 Difference]: Start difference. First operand has 325 places, 244 transitions, 2239 flow. Second operand 12 states and 122 transitions. [2024-06-14 12:12:04,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 266 transitions, 2901 flow [2024-06-14 12:12:05,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 266 transitions, 2847 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-14 12:12:05,186 INFO L231 Difference]: Finished difference. Result has 321 places, 237 transitions, 2144 flow [2024-06-14 12:12:05,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2144, PETRI_PLACES=321, PETRI_TRANSITIONS=237} [2024-06-14 12:12:05,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-14 12:12:05,187 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 237 transitions, 2144 flow [2024-06-14 12:12:05,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:05,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:05,187 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 12:12:05,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 12:12:05,187 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 12:12:05,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:05,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1048115336, now seen corresponding path program 16 times [2024-06-14 12:12:05,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:05,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817822347] [2024-06-14 12:12:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:05,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:06,188 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 12:12:06,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:06,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817822347] [2024-06-14 12:12:06,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817822347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:06,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:06,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:06,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617075968] [2024-06-14 12:12:06,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:06,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:06,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:06,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:06,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:06,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 237 transitions, 2144 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:06,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:06,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:06,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:06,705 INFO L124 PetriNetUnfolderBase]: 638/1182 cut-off events. [2024-06-14 12:12:06,705 INFO L125 PetriNetUnfolderBase]: For 64810/64810 co-relation queries the response was YES. [2024-06-14 12:12:06,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6513 conditions, 1182 events. 638/1182 cut-off events. For 64810/64810 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6552 event pairs, 116 based on Foata normal form. 2/1183 useless extension candidates. Maximal degree in co-relation 6360. Up to 981 conditions per place. [2024-06-14 12:12:06,718 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 217 selfloop transitions, 36 changer transitions 0/255 dead transitions. [2024-06-14 12:12:06,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 255 transitions, 2740 flow [2024-06-14 12:12:06,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:06,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 12:12:06,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-14 12:12:06,719 INFO L175 Difference]: Start difference. First operand has 321 places, 237 transitions, 2144 flow. Second operand 10 states and 101 transitions. [2024-06-14 12:12:06,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 255 transitions, 2740 flow [2024-06-14 12:12:06,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 255 transitions, 2672 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-14 12:12:06,961 INFO L231 Difference]: Finished difference. Result has 309 places, 238 transitions, 2210 flow [2024-06-14 12:12:06,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2210, PETRI_PLACES=309, PETRI_TRANSITIONS=238} [2024-06-14 12:12:06,962 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-14 12:12:06,962 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 238 transitions, 2210 flow [2024-06-14 12:12:06,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:06,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:06,962 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 12:12:06,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 12:12:06,962 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 12:12:06,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:06,962 INFO L85 PathProgramCache]: Analyzing trace with hash -990022886, now seen corresponding path program 17 times [2024-06-14 12:12:06,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:06,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681424240] [2024-06-14 12:12:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:06,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:12:08,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:08,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681424240] [2024-06-14 12:12:08,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681424240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:08,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:08,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:08,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78895861] [2024-06-14 12:12:08,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:08,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:08,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:08,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:08,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:08,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:08,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 238 transitions, 2210 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:08,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:08,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:08,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:08,764 INFO L124 PetriNetUnfolderBase]: 642/1190 cut-off events. [2024-06-14 12:12:08,764 INFO L125 PetriNetUnfolderBase]: For 62912/62912 co-relation queries the response was YES. [2024-06-14 12:12:08,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6632 conditions, 1190 events. 642/1190 cut-off events. For 62912/62912 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6610 event pairs, 130 based on Foata normal form. 2/1191 useless extension candidates. Maximal degree in co-relation 6484. Up to 1031 conditions per place. [2024-06-14 12:12:08,777 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 213 selfloop transitions, 41 changer transitions 0/256 dead transitions. [2024-06-14 12:12:08,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 256 transitions, 2808 flow [2024-06-14 12:12:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:08,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 12:12:08,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-14 12:12:08,778 INFO L175 Difference]: Start difference. First operand has 309 places, 238 transitions, 2210 flow. Second operand 10 states and 103 transitions. [2024-06-14 12:12:08,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 256 transitions, 2808 flow [2024-06-14 12:12:08,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 256 transitions, 2682 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-14 12:12:08,991 INFO L231 Difference]: Finished difference. Result has 310 places, 239 transitions, 2224 flow [2024-06-14 12:12:08,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2224, PETRI_PLACES=310, PETRI_TRANSITIONS=239} [2024-06-14 12:12:08,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-14 12:12:08,992 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 239 transitions, 2224 flow [2024-06-14 12:12:08,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:08,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:08,992 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 12:12:08,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 12:12:08,993 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 12:12:08,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:08,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1356913502, now seen corresponding path program 18 times [2024-06-14 12:12:08,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:08,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470717776] [2024-06-14 12:12:08,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:08,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:12:10,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:10,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470717776] [2024-06-14 12:12:10,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470717776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:10,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:10,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:10,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566093632] [2024-06-14 12:12:10,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:10,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:10,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:10,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:10,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:10,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:10,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 239 transitions, 2224 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:10,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:10,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:10,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:10,590 INFO L124 PetriNetUnfolderBase]: 653/1211 cut-off events. [2024-06-14 12:12:10,590 INFO L125 PetriNetUnfolderBase]: For 66602/66602 co-relation queries the response was YES. [2024-06-14 12:12:10,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6925 conditions, 1211 events. 653/1211 cut-off events. For 66602/66602 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6750 event pairs, 132 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 6777. Up to 983 conditions per place. [2024-06-14 12:12:10,600 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 200 selfloop transitions, 57 changer transitions 0/259 dead transitions. [2024-06-14 12:12:10,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 259 transitions, 3038 flow [2024-06-14 12:12:10,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:12:10,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-14 12:12:10,601 INFO L175 Difference]: Start difference. First operand has 310 places, 239 transitions, 2224 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:12:10,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 259 transitions, 3038 flow [2024-06-14 12:12:10,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 259 transitions, 2908 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-14 12:12:10,854 INFO L231 Difference]: Finished difference. Result has 312 places, 241 transitions, 2306 flow [2024-06-14 12:12:10,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2306, PETRI_PLACES=312, PETRI_TRANSITIONS=241} [2024-06-14 12:12:10,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-14 12:12:10,854 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 241 transitions, 2306 flow [2024-06-14 12:12:10,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:10,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:10,855 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 12:12:10,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 12:12:10,855 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 12:12:10,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:10,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1356918338, now seen corresponding path program 3 times [2024-06-14 12:12:10,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:10,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922176502] [2024-06-14 12:12:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:10,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:12,314 INFO 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 12:12:12,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:12,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922176502] [2024-06-14 12:12:12,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922176502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:12,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:12,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:12,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032911134] [2024-06-14 12:12:12,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:12,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:12,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:12,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:12,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:12,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:12,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 241 transitions, 2306 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:12,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:12,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:12,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:12,853 INFO L124 PetriNetUnfolderBase]: 651/1208 cut-off events. [2024-06-14 12:12:12,853 INFO L125 PetriNetUnfolderBase]: For 57308/57308 co-relation queries the response was YES. [2024-06-14 12:12:12,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6749 conditions, 1208 events. 651/1208 cut-off events. For 57308/57308 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6731 event pairs, 141 based on Foata normal form. 1/1208 useless extension candidates. Maximal degree in co-relation 6600. Up to 1038 conditions per place. [2024-06-14 12:12:12,866 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 196 selfloop transitions, 62 changer transitions 0/260 dead transitions. [2024-06-14 12:12:12,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 260 transitions, 2950 flow [2024-06-14 12:12:12,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:12,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:12:12,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:12:12,867 INFO L175 Difference]: Start difference. First operand has 312 places, 241 transitions, 2306 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:12:12,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 260 transitions, 2950 flow [2024-06-14 12:12:13,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 260 transitions, 2834 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 12:12:13,110 INFO L231 Difference]: Finished difference. Result has 314 places, 243 transitions, 2412 flow [2024-06-14 12:12:13,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2412, PETRI_PLACES=314, PETRI_TRANSITIONS=243} [2024-06-14 12:12:13,110 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-14 12:12:13,110 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 243 transitions, 2412 flow [2024-06-14 12:12:13,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:13,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:13,110 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 12:12:13,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 12:12:13,111 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 12:12:13,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:13,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1596830910, now seen corresponding path program 19 times [2024-06-14 12:12:13,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:13,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939190979] [2024-06-14 12:12:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:13,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:14,116 INFO 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 12:12:14,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:14,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939190979] [2024-06-14 12:12:14,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939190979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:14,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:14,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:14,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438481285] [2024-06-14 12:12:14,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:14,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:14,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:14,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:14,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:14,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:14,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 243 transitions, 2412 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:14,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:14,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:14,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:14,590 INFO L124 PetriNetUnfolderBase]: 648/1203 cut-off events. [2024-06-14 12:12:14,590 INFO L125 PetriNetUnfolderBase]: For 51465/51465 co-relation queries the response was YES. [2024-06-14 12:12:14,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6554 conditions, 1203 events. 648/1203 cut-off events. For 51465/51465 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6727 event pairs, 140 based on Foata normal form. 2/1204 useless extension candidates. Maximal degree in co-relation 6405. Up to 1026 conditions per place. [2024-06-14 12:12:14,603 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 201 selfloop transitions, 57 changer transitions 0/260 dead transitions. [2024-06-14 12:12:14,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 260 transitions, 2974 flow [2024-06-14 12:12:14,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:14,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:14,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:12:14,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:12:14,604 INFO L175 Difference]: Start difference. First operand has 314 places, 243 transitions, 2412 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:12:14,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 260 transitions, 2974 flow [2024-06-14 12:12:14,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 260 transitions, 2754 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-14 12:12:14,819 INFO L231 Difference]: Finished difference. Result has 316 places, 243 transitions, 2317 flow [2024-06-14 12:12:14,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2317, PETRI_PLACES=316, PETRI_TRANSITIONS=243} [2024-06-14 12:12:14,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-14 12:12:14,820 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 243 transitions, 2317 flow [2024-06-14 12:12:14,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:14,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:14,820 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 12:12:14,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 12:12:14,821 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 12:12:14,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:14,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1095263774, now seen corresponding path program 7 times [2024-06-14 12:12:14,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:14,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504682521] [2024-06-14 12:12:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:14,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:12:15,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:15,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504682521] [2024-06-14 12:12:15,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504682521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:15,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:15,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474860807] [2024-06-14 12:12:15,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:15,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:15,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:15,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:15,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:15,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 243 transitions, 2317 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:15,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:15,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:15,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:16,291 INFO L124 PetriNetUnfolderBase]: 676/1264 cut-off events. [2024-06-14 12:12:16,292 INFO L125 PetriNetUnfolderBase]: For 74905/74905 co-relation queries the response was YES. [2024-06-14 12:12:16,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6716 conditions, 1264 events. 676/1264 cut-off events. For 74905/74905 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7147 event pairs, 125 based on Foata normal form. 10/1273 useless extension candidates. Maximal degree in co-relation 6566. Up to 1057 conditions per place. [2024-06-14 12:12:16,304 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 212 selfloop transitions, 33 changer transitions 22/269 dead transitions. [2024-06-14 12:12:16,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 269 transitions, 3012 flow [2024-06-14 12:12:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:12:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:12:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 12:12:16,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-14 12:12:16,305 INFO L175 Difference]: Start difference. First operand has 316 places, 243 transitions, 2317 flow. Second operand 11 states and 118 transitions. [2024-06-14 12:12:16,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 269 transitions, 3012 flow [2024-06-14 12:12:16,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 269 transitions, 2871 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:12:16,532 INFO L231 Difference]: Finished difference. Result has 316 places, 234 transitions, 2166 flow [2024-06-14 12:12:16,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2166, PETRI_PLACES=316, PETRI_TRANSITIONS=234} [2024-06-14 12:12:16,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-14 12:12:16,532 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 234 transitions, 2166 flow [2024-06-14 12:12:16,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:16,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:16,533 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 12:12:16,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 12:12:16,533 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 12:12:16,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:16,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1124938360, now seen corresponding path program 20 times [2024-06-14 12:12:16,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:16,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651176246] [2024-06-14 12:12:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:16,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:17,517 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 12:12:17,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651176246] [2024-06-14 12:12:17,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651176246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:17,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:17,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:17,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747227253] [2024-06-14 12:12:17,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:17,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:17,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:17,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:17,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:17,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:17,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 234 transitions, 2166 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:17,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:17,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:17,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:17,996 INFO L124 PetriNetUnfolderBase]: 624/1168 cut-off events. [2024-06-14 12:12:17,997 INFO L125 PetriNetUnfolderBase]: For 47697/47697 co-relation queries the response was YES. [2024-06-14 12:12:18,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6164 conditions, 1168 events. 624/1168 cut-off events. For 47697/47697 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6524 event pairs, 113 based on Foata normal form. 2/1169 useless extension candidates. Maximal degree in co-relation 6015. Up to 1018 conditions per place. [2024-06-14 12:12:18,008 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 203 selfloop transitions, 46 changer transitions 0/251 dead transitions. [2024-06-14 12:12:18,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 251 transitions, 2744 flow [2024-06-14 12:12:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:12:18,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:12:18,009 INFO L175 Difference]: Start difference. First operand has 316 places, 234 transitions, 2166 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:12:18,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 251 transitions, 2744 flow [2024-06-14 12:12:18,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 251 transitions, 2654 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-14 12:12:18,223 INFO L231 Difference]: Finished difference. Result has 309 places, 235 transitions, 2212 flow [2024-06-14 12:12:18,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2212, PETRI_PLACES=309, PETRI_TRANSITIONS=235} [2024-06-14 12:12:18,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-14 12:12:18,224 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 235 transitions, 2212 flow [2024-06-14 12:12:18,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:18,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:18,224 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 12:12:18,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 12:12:18,224 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 12:12:18,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:18,224 INFO L85 PathProgramCache]: Analyzing trace with hash 823203218, now seen corresponding path program 21 times [2024-06-14 12:12:18,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:18,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497253320] [2024-06-14 12:12:18,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:18,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:12:19,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:19,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497253320] [2024-06-14 12:12:19,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497253320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:19,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:19,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:19,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544151209] [2024-06-14 12:12:19,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:19,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:19,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:19,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:19,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:19,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:19,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 235 transitions, 2212 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:19,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:19,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:19,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:19,934 INFO L124 PetriNetUnfolderBase]: 628/1176 cut-off events. [2024-06-14 12:12:19,934 INFO L125 PetriNetUnfolderBase]: For 47361/47361 co-relation queries the response was YES. [2024-06-14 12:12:19,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6259 conditions, 1176 events. 628/1176 cut-off events. For 47361/47361 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6602 event pairs, 109 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 6112. Up to 998 conditions per place. [2024-06-14 12:12:19,946 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 202 selfloop transitions, 48 changer transitions 0/252 dead transitions. [2024-06-14 12:12:19,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 252 transitions, 2792 flow [2024-06-14 12:12:19,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:12:19,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-14 12:12:19,947 INFO L175 Difference]: Start difference. First operand has 309 places, 235 transitions, 2212 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:12:19,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 252 transitions, 2792 flow [2024-06-14 12:12:20,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 252 transitions, 2658 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 12:12:20,148 INFO L231 Difference]: Finished difference. Result has 310 places, 236 transitions, 2220 flow [2024-06-14 12:12:20,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2220, PETRI_PLACES=310, PETRI_TRANSITIONS=236} [2024-06-14 12:12:20,148 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-14 12:12:20,148 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 236 transitions, 2220 flow [2024-06-14 12:12:20,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:20,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:20,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:12:20,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 12:12:20,149 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 12:12:20,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash -947806840, now seen corresponding path program 22 times [2024-06-14 12:12:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:20,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410183081] [2024-06-14 12:12:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:20,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:21,137 INFO 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 12:12:21,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:21,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410183081] [2024-06-14 12:12:21,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410183081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:21,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:21,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:21,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459980676] [2024-06-14 12:12:21,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:21,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:21,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:21,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:21,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:21,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:21,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 236 transitions, 2220 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:21,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:21,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:21,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:21,603 INFO L124 PetriNetUnfolderBase]: 648/1219 cut-off events. [2024-06-14 12:12:21,603 INFO L125 PetriNetUnfolderBase]: For 75274/75274 co-relation queries the response was YES. [2024-06-14 12:12:21,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6466 conditions, 1219 events. 648/1219 cut-off events. For 75274/75274 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6838 event pairs, 163 based on Foata normal form. 12/1230 useless extension candidates. Maximal degree in co-relation 6319. Up to 1080 conditions per place. [2024-06-14 12:12:21,616 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 219 selfloop transitions, 28 changer transitions 7/256 dead transitions. [2024-06-14 12:12:21,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 256 transitions, 2876 flow [2024-06-14 12:12:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:21,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:21,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 12:12:21,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-14 12:12:21,616 INFO L175 Difference]: Start difference. First operand has 310 places, 236 transitions, 2220 flow. Second operand 10 states and 109 transitions. [2024-06-14 12:12:21,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 256 transitions, 2876 flow [2024-06-14 12:12:21,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 256 transitions, 2748 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 12:12:21,823 INFO L231 Difference]: Finished difference. Result has 312 places, 234 transitions, 2169 flow [2024-06-14 12:12:21,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2169, PETRI_PLACES=312, PETRI_TRANSITIONS=234} [2024-06-14 12:12:21,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-14 12:12:21,824 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 234 transitions, 2169 flow [2024-06-14 12:12:21,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:21,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:21,824 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 12:12:21,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 12:12:21,824 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 12:12:21,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:21,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1125058330, now seen corresponding path program 23 times [2024-06-14 12:12:21,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:21,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698063334] [2024-06-14 12:12:21,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:21,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:22,969 INFO 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 12:12:22,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:22,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698063334] [2024-06-14 12:12:22,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698063334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:22,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:22,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:22,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671867716] [2024-06-14 12:12:22,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:22,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:22,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:22,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:22,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:23,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:23,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 234 transitions, 2169 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:23,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:23,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:23,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:23,457 INFO L124 PetriNetUnfolderBase]: 628/1180 cut-off events. [2024-06-14 12:12:23,457 INFO L125 PetriNetUnfolderBase]: For 45841/45841 co-relation queries the response was YES. [2024-06-14 12:12:23,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6189 conditions, 1180 events. 628/1180 cut-off events. For 45841/45841 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6609 event pairs, 107 based on Foata normal form. 2/1181 useless extension candidates. Maximal degree in co-relation 6041. Up to 1030 conditions per place. [2024-06-14 12:12:23,470 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 206 selfloop transitions, 43 changer transitions 0/251 dead transitions. [2024-06-14 12:12:23,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 251 transitions, 2743 flow [2024-06-14 12:12:23,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:23,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 12:12:23,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-14 12:12:23,471 INFO L175 Difference]: Start difference. First operand has 312 places, 234 transitions, 2169 flow. Second operand 10 states and 103 transitions. [2024-06-14 12:12:23,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 251 transitions, 2743 flow [2024-06-14 12:12:23,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 251 transitions, 2617 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 12:12:23,649 INFO L231 Difference]: Finished difference. Result has 312 places, 235 transitions, 2173 flow [2024-06-14 12:12:23,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2173, PETRI_PLACES=312, PETRI_TRANSITIONS=235} [2024-06-14 12:12:23,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-14 12:12:23,649 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 235 transitions, 2173 flow [2024-06-14 12:12:23,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:23,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:23,650 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 12:12:23,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 12:12:23,650 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 12:12:23,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:23,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1120289786, now seen corresponding path program 8 times [2024-06-14 12:12:23,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:23,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620783420] [2024-06-14 12:12:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:23,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:12:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620783420] [2024-06-14 12:12:24,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620783420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:24,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:24,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:24,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714641630] [2024-06-14 12:12:24,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:24,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:24,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:24,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:24,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:24,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:24,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 235 transitions, 2173 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:24,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:24,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:24,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:25,143 INFO L124 PetriNetUnfolderBase]: 644/1216 cut-off events. [2024-06-14 12:12:25,143 INFO L125 PetriNetUnfolderBase]: For 71703/71703 co-relation queries the response was YES. [2024-06-14 12:12:25,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6348 conditions, 1216 events. 644/1216 cut-off events. For 71703/71703 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6872 event pairs, 123 based on Foata normal form. 10/1225 useless extension candidates. Maximal degree in co-relation 6200. Up to 1008 conditions per place. [2024-06-14 12:12:25,155 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 39 changer transitions 19/257 dead transitions. [2024-06-14 12:12:25,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 257 transitions, 2805 flow [2024-06-14 12:12:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:12:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:12:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 12:12:25,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-14 12:12:25,156 INFO L175 Difference]: Start difference. First operand has 312 places, 235 transitions, 2173 flow. Second operand 11 states and 118 transitions. [2024-06-14 12:12:25,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 257 transitions, 2805 flow [2024-06-14 12:12:25,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 257 transitions, 2687 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 12:12:25,330 INFO L231 Difference]: Finished difference. Result has 315 places, 226 transitions, 2070 flow [2024-06-14 12:12:25,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2070, PETRI_PLACES=315, PETRI_TRANSITIONS=226} [2024-06-14 12:12:25,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-14 12:12:25,331 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 226 transitions, 2070 flow [2024-06-14 12:12:25,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:25,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:25,331 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 12:12:25,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 12:12:25,332 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 12:12:25,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:25,332 INFO L85 PathProgramCache]: Analyzing trace with hash -947560886, now seen corresponding path program 9 times [2024-06-14 12:12:25,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:25,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668530083] [2024-06-14 12:12:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:25,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:26,118 INFO 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 12:12:26,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:26,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668530083] [2024-06-14 12:12:26,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668530083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:26,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:26,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:12:26,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025505405] [2024-06-14 12:12:26,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:26,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:12:26,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:26,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:12:26,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:12:26,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:26,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 226 transitions, 2070 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:26,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:26,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:26,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:26,627 INFO L124 PetriNetUnfolderBase]: 646/1229 cut-off events. [2024-06-14 12:12:26,627 INFO L125 PetriNetUnfolderBase]: For 100204/100204 co-relation queries the response was YES. [2024-06-14 12:12:26,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7408 conditions, 1229 events. 646/1229 cut-off events. For 100204/100204 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6921 event pairs, 171 based on Foata normal form. 8/1236 useless extension candidates. Maximal degree in co-relation 7273. Up to 1010 conditions per place. [2024-06-14 12:12:26,646 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 216 selfloop transitions, 24 changer transitions 8/250 dead transitions. [2024-06-14 12:12:26,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 250 transitions, 2922 flow [2024-06-14 12:12:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:12:26,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-14 12:12:26,647 INFO L175 Difference]: Start difference. First operand has 315 places, 226 transitions, 2070 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:12:26,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 250 transitions, 2922 flow [2024-06-14 12:12:27,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 250 transitions, 2790 flow, removed 27 selfloop flow, removed 12 redundant places. [2024-06-14 12:12:27,076 INFO L231 Difference]: Finished difference. Result has 305 places, 223 transitions, 2002 flow [2024-06-14 12:12:27,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=305, PETRI_TRANSITIONS=223} [2024-06-14 12:12:27,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-14 12:12:27,077 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 223 transitions, 2002 flow [2024-06-14 12:12:27,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:27,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:27,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:12:27,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 12:12:27,077 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 12:12:27,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash 393418338, now seen corresponding path program 10 times [2024-06-14 12:12:27,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824937436] [2024-06-14 12:12:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:27,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:28,033 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 12:12:28,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:28,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824937436] [2024-06-14 12:12:28,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824937436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:28,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:28,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:28,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923334968] [2024-06-14 12:12:28,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:28,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:28,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:28,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:28,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:28,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:28,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 223 transitions, 2002 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:28,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:28,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:28,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:28,489 INFO L124 PetriNetUnfolderBase]: 643/1224 cut-off events. [2024-06-14 12:12:28,489 INFO L125 PetriNetUnfolderBase]: For 96284/96284 co-relation queries the response was YES. [2024-06-14 12:12:28,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7183 conditions, 1224 events. 643/1224 cut-off events. For 96284/96284 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6892 event pairs, 177 based on Foata normal form. 10/1233 useless extension candidates. Maximal degree in co-relation 7052. Up to 1090 conditions per place. [2024-06-14 12:12:28,503 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 205 selfloop transitions, 20 changer transitions 17/244 dead transitions. [2024-06-14 12:12:28,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 244 transitions, 2594 flow [2024-06-14 12:12:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:12:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:12:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 12:12:28,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-14 12:12:28,504 INFO L175 Difference]: Start difference. First operand has 305 places, 223 transitions, 2002 flow. Second operand 11 states and 117 transitions. [2024-06-14 12:12:28,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 244 transitions, 2594 flow [2024-06-14 12:12:28,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 244 transitions, 2548 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:12:28,759 INFO L231 Difference]: Finished difference. Result has 304 places, 216 transitions, 1950 flow [2024-06-14 12:12:28,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1950, PETRI_PLACES=304, PETRI_TRANSITIONS=216} [2024-06-14 12:12:28,759 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-14 12:12:28,759 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 216 transitions, 1950 flow [2024-06-14 12:12:28,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:28,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:28,759 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 12:12:28,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 12:12:28,760 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 12:12:28,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:28,760 INFO L85 PathProgramCache]: Analyzing trace with hash -954235930, now seen corresponding path program 24 times [2024-06-14 12:12:28,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:28,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608449156] [2024-06-14 12:12:28,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:28,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:29,706 INFO 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 12:12:29,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:29,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608449156] [2024-06-14 12:12:29,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608449156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:29,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:29,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:29,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797950742] [2024-06-14 12:12:29,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:29,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:29,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:29,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:29,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:29,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:29,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 216 transitions, 1950 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:29,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:29,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:29,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:30,186 INFO L124 PetriNetUnfolderBase]: 605/1150 cut-off events. [2024-06-14 12:12:30,186 INFO L125 PetriNetUnfolderBase]: For 67274/67274 co-relation queries the response was YES. [2024-06-14 12:12:30,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 1150 events. 605/1150 cut-off events. For 67274/67274 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6410 event pairs, 172 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 6532. Up to 1079 conditions per place. [2024-06-14 12:12:30,196 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 24 changer transitions 0/232 dead transitions. [2024-06-14 12:12:30,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 232 transitions, 2482 flow [2024-06-14 12:12:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 12:12:30,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-14 12:12:30,197 INFO L175 Difference]: Start difference. First operand has 304 places, 216 transitions, 1950 flow. Second operand 10 states and 102 transitions. [2024-06-14 12:12:30,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 232 transitions, 2482 flow [2024-06-14 12:12:30,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 232 transitions, 2426 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 12:12:30,461 INFO L231 Difference]: Finished difference. Result has 295 places, 217 transitions, 1980 flow [2024-06-14 12:12:30,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1980, PETRI_PLACES=295, PETRI_TRANSITIONS=217} [2024-06-14 12:12:30,462 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-14 12:12:30,462 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 217 transitions, 1980 flow [2024-06-14 12:12:30,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:30,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:30,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:12:30,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 12:12:30,463 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 12:12:30,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:30,463 INFO L85 PathProgramCache]: Analyzing trace with hash -954240580, now seen corresponding path program 25 times [2024-06-14 12:12:30,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:30,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629151163] [2024-06-14 12:12:30,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:30,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:31,424 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 12:12:31,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:31,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629151163] [2024-06-14 12:12:31,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629151163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:31,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:31,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:31,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169132705] [2024-06-14 12:12:31,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:31,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:31,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:31,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:31,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:31,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:31,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 217 transitions, 1980 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:31,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:31,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:31,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:31,855 INFO L124 PetriNetUnfolderBase]: 609/1158 cut-off events. [2024-06-14 12:12:31,855 INFO L125 PetriNetUnfolderBase]: For 60990/60990 co-relation queries the response was YES. [2024-06-14 12:12:31,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6646 conditions, 1158 events. 609/1158 cut-off events. For 60990/60990 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6484 event pairs, 170 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 6520. Up to 1059 conditions per place. [2024-06-14 12:12:31,865 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 204 selfloop transitions, 27 changer transitions 0/233 dead transitions. [2024-06-14 12:12:31,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 233 transitions, 2512 flow [2024-06-14 12:12:31,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:31,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 12:12:31,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-14 12:12:31,867 INFO L175 Difference]: Start difference. First operand has 295 places, 217 transitions, 1980 flow. Second operand 10 states and 103 transitions. [2024-06-14 12:12:31,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 233 transitions, 2512 flow [2024-06-14 12:12:32,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 233 transitions, 2438 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:12:32,082 INFO L231 Difference]: Finished difference. Result has 297 places, 218 transitions, 2000 flow [2024-06-14 12:12:32,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2000, PETRI_PLACES=297, PETRI_TRANSITIONS=218} [2024-06-14 12:12:32,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-14 12:12:32,083 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 218 transitions, 2000 flow [2024-06-14 12:12:32,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:32,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:32,083 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 12:12:32,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 12:12:32,084 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 12:12:32,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash -954056006, now seen corresponding path program 11 times [2024-06-14 12:12:32,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:32,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051130998] [2024-06-14 12:12:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:32,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:33,020 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 12:12:33,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:33,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051130998] [2024-06-14 12:12:33,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051130998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:33,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:33,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:33,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286068207] [2024-06-14 12:12:33,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:33,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:33,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:33,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:33,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:33,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:33,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 218 transitions, 2000 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:33,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:33,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:33,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:33,453 INFO L124 PetriNetUnfolderBase]: 596/1135 cut-off events. [2024-06-14 12:12:33,453 INFO L125 PetriNetUnfolderBase]: For 57234/57234 co-relation queries the response was YES. [2024-06-14 12:12:33,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5833 conditions, 1135 events. 596/1135 cut-off events. For 57234/57234 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6358 event pairs, 159 based on Foata normal form. 10/1144 useless extension candidates. Maximal degree in co-relation 5706. Up to 1018 conditions per place. [2024-06-14 12:12:33,466 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 202 selfloop transitions, 18 changer transitions 16/238 dead transitions. [2024-06-14 12:12:33,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 238 transitions, 2574 flow [2024-06-14 12:12:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:12:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:12:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 12:12:33,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-14 12:12:33,467 INFO L175 Difference]: Start difference. First operand has 297 places, 218 transitions, 2000 flow. Second operand 11 states and 112 transitions. [2024-06-14 12:12:33,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 238 transitions, 2574 flow [2024-06-14 12:12:33,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 238 transitions, 2492 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 12:12:33,622 INFO L231 Difference]: Finished difference. Result has 300 places, 212 transitions, 1913 flow [2024-06-14 12:12:33,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1913, PETRI_PLACES=300, PETRI_TRANSITIONS=212} [2024-06-14 12:12:33,623 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-14 12:12:33,623 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 212 transitions, 1913 flow [2024-06-14 12:12:33,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:33,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:33,623 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 12:12:33,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 12:12:33,623 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 12:12:33,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:33,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1212680260, now seen corresponding path program 26 times [2024-06-14 12:12:33,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:33,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893345706] [2024-06-14 12:12:33,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:33,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:12:34,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:34,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893345706] [2024-06-14 12:12:34,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893345706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:34,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:34,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:34,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546368756] [2024-06-14 12:12:34,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:34,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:34,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:34,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:34,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:34,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:34,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 212 transitions, 1913 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:34,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:34,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:34,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:35,272 INFO L124 PetriNetUnfolderBase]: 580/1112 cut-off events. [2024-06-14 12:12:35,272 INFO L125 PetriNetUnfolderBase]: For 62268/62268 co-relation queries the response was YES. [2024-06-14 12:12:35,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5691 conditions, 1112 events. 580/1112 cut-off events. For 62268/62268 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6200 event pairs, 120 based on Foata normal form. 12/1119 useless extension candidates. Maximal degree in co-relation 5563. Up to 698 conditions per place. [2024-06-14 12:12:35,284 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 93 changer transitions 7/232 dead transitions. [2024-06-14 12:12:35,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 232 transitions, 2507 flow [2024-06-14 12:12:35,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:12:35,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:12:35,285 INFO L175 Difference]: Start difference. First operand has 300 places, 212 transitions, 1913 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:12:35,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 232 transitions, 2507 flow [2024-06-14 12:12:35,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 232 transitions, 2451 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 12:12:35,471 INFO L231 Difference]: Finished difference. Result has 292 places, 210 transitions, 2069 flow [2024-06-14 12:12:35,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2069, PETRI_PLACES=292, PETRI_TRANSITIONS=210} [2024-06-14 12:12:35,471 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-14 12:12:35,471 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 210 transitions, 2069 flow [2024-06-14 12:12:35,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:35,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:35,471 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 12:12:35,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 12:12:35,472 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 12:12:35,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:35,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1637632120, now seen corresponding path program 27 times [2024-06-14 12:12:35,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:35,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353977900] [2024-06-14 12:12:35,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:35,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:36,570 INFO 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 12:12:36,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:36,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353977900] [2024-06-14 12:12:36,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353977900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:36,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:36,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:36,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915434383] [2024-06-14 12:12:36,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:36,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:36,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:36,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:36,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:36,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 210 transitions, 2069 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:36,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:36,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:36,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:37,039 INFO L124 PetriNetUnfolderBase]: 558/1070 cut-off events. [2024-06-14 12:12:37,039 INFO L125 PetriNetUnfolderBase]: For 35462/35462 co-relation queries the response was YES. [2024-06-14 12:12:37,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5670 conditions, 1070 events. 558/1070 cut-off events. For 35462/35462 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5978 event pairs, 114 based on Foata normal form. 2/1067 useless extension candidates. Maximal degree in co-relation 5545. Up to 916 conditions per place. [2024-06-14 12:12:37,050 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 44 changer transitions 0/225 dead transitions. [2024-06-14 12:12:37,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 225 transitions, 2581 flow [2024-06-14 12:12:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 12:12:37,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-14 12:12:37,051 INFO L175 Difference]: Start difference. First operand has 292 places, 210 transitions, 2069 flow. Second operand 10 states and 104 transitions. [2024-06-14 12:12:37,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 225 transitions, 2581 flow [2024-06-14 12:12:37,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 225 transitions, 2354 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-14 12:12:37,173 INFO L231 Difference]: Finished difference. Result has 291 places, 211 transitions, 1966 flow [2024-06-14 12:12:37,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1966, PETRI_PLACES=291, PETRI_TRANSITIONS=211} [2024-06-14 12:12:37,173 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-14 12:12:37,173 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 211 transitions, 1966 flow [2024-06-14 12:12:37,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:37,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:37,173 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 12:12:37,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 12:12:37,174 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 12:12:37,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:37,174 INFO L85 PathProgramCache]: Analyzing trace with hash 675176584, now seen corresponding path program 28 times [2024-06-14 12:12:37,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:37,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388359545] [2024-06-14 12:12:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:37,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:38,161 INFO 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 12:12:38,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:38,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388359545] [2024-06-14 12:12:38,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388359545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:38,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:38,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:38,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517139144] [2024-06-14 12:12:38,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:38,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:38,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:38,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:38,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:38,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 211 transitions, 1966 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:38,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:38,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:38,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:38,611 INFO L124 PetriNetUnfolderBase]: 562/1078 cut-off events. [2024-06-14 12:12:38,611 INFO L125 PetriNetUnfolderBase]: For 35501/35501 co-relation queries the response was YES. [2024-06-14 12:12:38,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5557 conditions, 1078 events. 562/1078 cut-off events. For 35501/35501 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6045 event pairs, 150 based on Foata normal form. 2/1077 useless extension candidates. Maximal degree in co-relation 5433. Up to 877 conditions per place. [2024-06-14 12:12:38,627 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 167 selfloop transitions, 57 changer transitions 0/226 dead transitions. [2024-06-14 12:12:38,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 226 transitions, 2484 flow [2024-06-14 12:12:38,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:38,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 12:12:38,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:12:38,628 INFO L175 Difference]: Start difference. First operand has 291 places, 211 transitions, 1966 flow. Second operand 10 states and 110 transitions. [2024-06-14 12:12:38,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 226 transitions, 2484 flow [2024-06-14 12:12:38,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 226 transitions, 2370 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:12:38,768 INFO L231 Difference]: Finished difference. Result has 293 places, 212 transitions, 2004 flow [2024-06-14 12:12:38,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2004, PETRI_PLACES=293, PETRI_TRANSITIONS=212} [2024-06-14 12:12:38,769 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-14 12:12:38,769 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 212 transitions, 2004 flow [2024-06-14 12:12:38,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:38,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:38,769 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 12:12:38,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 12:12:38,769 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 12:12:38,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:38,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1041977830, now seen corresponding path program 29 times [2024-06-14 12:12:38,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:38,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516082616] [2024-06-14 12:12:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:38,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:40,118 INFO 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 12:12:40,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516082616] [2024-06-14 12:12:40,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516082616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:40,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:40,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:40,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261223949] [2024-06-14 12:12:40,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:40,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:40,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:40,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:40,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:40,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:40,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 212 transitions, 2004 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:40,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:40,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:40,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:40,596 INFO L124 PetriNetUnfolderBase]: 566/1086 cut-off events. [2024-06-14 12:12:40,596 INFO L125 PetriNetUnfolderBase]: For 36522/36522 co-relation queries the response was YES. [2024-06-14 12:12:40,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5641 conditions, 1086 events. 566/1086 cut-off events. For 36522/36522 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6099 event pairs, 154 based on Foata normal form. 2/1085 useless extension candidates. Maximal degree in co-relation 5516. Up to 991 conditions per place. [2024-06-14 12:12:40,607 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 33 changer transitions 0/226 dead transitions. [2024-06-14 12:12:40,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 226 transitions, 2520 flow [2024-06-14 12:12:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:12:40,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:12:40,609 INFO L175 Difference]: Start difference. First operand has 293 places, 212 transitions, 2004 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:12:40,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 226 transitions, 2520 flow [2024-06-14 12:12:40,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 226 transitions, 2378 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:12:40,741 INFO L231 Difference]: Finished difference. Result has 295 places, 213 transitions, 1968 flow [2024-06-14 12:12:40,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1968, PETRI_PLACES=295, PETRI_TRANSITIONS=213} [2024-06-14 12:12:40,741 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-14 12:12:40,741 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 213 transitions, 1968 flow [2024-06-14 12:12:40,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:40,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:40,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:12:40,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 12:12:40,741 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 12:12:40,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1041797906, now seen corresponding path program 12 times [2024-06-14 12:12:40,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:40,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537764658] [2024-06-14 12:12:40,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:40,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:42,203 INFO 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 12:12:42,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:42,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537764658] [2024-06-14 12:12:42,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537764658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:42,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:42,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:42,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545413999] [2024-06-14 12:12:42,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:42,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:42,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:42,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:42,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:42,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:42,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 213 transitions, 1968 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:42,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:42,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:42,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:42,717 INFO L124 PetriNetUnfolderBase]: 582/1122 cut-off events. [2024-06-14 12:12:42,717 INFO L125 PetriNetUnfolderBase]: For 55765/55765 co-relation queries the response was YES. [2024-06-14 12:12:42,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5706 conditions, 1122 events. 582/1122 cut-off events. For 55765/55765 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6303 event pairs, 158 based on Foata normal form. 10/1129 useless extension candidates. Maximal degree in co-relation 5580. Up to 1008 conditions per place. [2024-06-14 12:12:42,728 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 24 changer transitions 11/231 dead transitions. [2024-06-14 12:12:42,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 231 transitions, 2514 flow [2024-06-14 12:12:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:12:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:12:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 12:12:42,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-14 12:12:42,729 INFO L175 Difference]: Start difference. First operand has 295 places, 213 transitions, 1968 flow. Second operand 11 states and 113 transitions. [2024-06-14 12:12:42,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 231 transitions, 2514 flow [2024-06-14 12:12:42,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 231 transitions, 2418 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 12:12:42,873 INFO L231 Difference]: Finished difference. Result has 298 places, 210 transitions, 1902 flow [2024-06-14 12:12:42,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1902, PETRI_PLACES=298, PETRI_TRANSITIONS=210} [2024-06-14 12:12:42,874 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-14 12:12:42,874 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 210 transitions, 1902 flow [2024-06-14 12:12:42,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:42,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:42,874 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 12:12:42,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 12:12:42,874 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 12:12:42,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1212800230, now seen corresponding path program 30 times [2024-06-14 12:12:42,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:42,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717031668] [2024-06-14 12:12:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:42,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:44,322 INFO 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 12:12:44,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:44,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717031668] [2024-06-14 12:12:44,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717031668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:44,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:44,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:44,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700292179] [2024-06-14 12:12:44,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:44,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:44,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:44,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:44,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:44,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 210 transitions, 1902 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:44,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:44,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:44,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:44,778 INFO L124 PetriNetUnfolderBase]: 560/1080 cut-off events. [2024-06-14 12:12:44,779 INFO L125 PetriNetUnfolderBase]: For 38017/38017 co-relation queries the response was YES. [2024-06-14 12:12:44,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5491 conditions, 1080 events. 560/1080 cut-off events. For 38017/38017 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6078 event pairs, 112 based on Foata normal form. 2/1077 useless extension candidates. Maximal degree in co-relation 5364. Up to 940 conditions per place. [2024-06-14 12:12:44,790 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 181 selfloop transitions, 42 changer transitions 0/225 dead transitions. [2024-06-14 12:12:44,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 225 transitions, 2418 flow [2024-06-14 12:12:44,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 12:12:44,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-14 12:12:44,791 INFO L175 Difference]: Start difference. First operand has 298 places, 210 transitions, 1902 flow. Second operand 10 states and 102 transitions. [2024-06-14 12:12:44,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 225 transitions, 2418 flow [2024-06-14 12:12:44,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 225 transitions, 2366 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:12:44,949 INFO L231 Difference]: Finished difference. Result has 295 places, 211 transitions, 1976 flow [2024-06-14 12:12:44,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1976, PETRI_PLACES=295, PETRI_TRANSITIONS=211} [2024-06-14 12:12:44,949 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-14 12:12:44,949 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 211 transitions, 1976 flow [2024-06-14 12:12:44,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:44,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:44,949 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 12:12:44,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 12:12:44,950 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 12:12:44,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:44,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1035548740, now seen corresponding path program 31 times [2024-06-14 12:12:44,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:44,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159698709] [2024-06-14 12:12:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:44,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:45,983 INFO 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 12:12:45,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:45,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159698709] [2024-06-14 12:12:45,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159698709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:45,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:45,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:45,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96902156] [2024-06-14 12:12:45,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:45,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:45,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:45,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:45,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:46,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:46,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 211 transitions, 1976 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:46,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:46,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:46,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:46,383 INFO L124 PetriNetUnfolderBase]: 580/1124 cut-off events. [2024-06-14 12:12:46,383 INFO L125 PetriNetUnfolderBase]: For 61427/61427 co-relation queries the response was YES. [2024-06-14 12:12:46,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5787 conditions, 1124 events. 580/1124 cut-off events. For 61427/61427 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6354 event pairs, 162 based on Foata normal form. 12/1133 useless extension candidates. Maximal degree in co-relation 5661. Up to 995 conditions per place. [2024-06-14 12:12:46,395 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 193 selfloop transitions, 27 changer transitions 7/229 dead transitions. [2024-06-14 12:12:46,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 229 transitions, 2554 flow [2024-06-14 12:12:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:46,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:12:46,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:12:46,396 INFO L175 Difference]: Start difference. First operand has 295 places, 211 transitions, 1976 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:12:46,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 229 transitions, 2554 flow [2024-06-14 12:12:46,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 229 transitions, 2438 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 12:12:46,531 INFO L231 Difference]: Finished difference. Result has 297 places, 209 transitions, 1937 flow [2024-06-14 12:12:46,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1937, PETRI_PLACES=297, PETRI_TRANSITIONS=209} [2024-06-14 12:12:46,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-14 12:12:46,531 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 209 transitions, 1937 flow [2024-06-14 12:12:46,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:46,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:46,532 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 12:12:46,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 12:12:46,532 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 12:12:46,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:46,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1041982480, now seen corresponding path program 32 times [2024-06-14 12:12:46,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:46,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980915971] [2024-06-14 12:12:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:46,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:47,554 INFO 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 12:12:47,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:47,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980915971] [2024-06-14 12:12:47,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980915971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:47,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:47,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:47,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976748583] [2024-06-14 12:12:47,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:47,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:47,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:47,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:47,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:47,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 209 transitions, 1937 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:47,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:47,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:47,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:47,955 INFO L124 PetriNetUnfolderBase]: 560/1084 cut-off events. [2024-06-14 12:12:47,956 INFO L125 PetriNetUnfolderBase]: For 38901/38901 co-relation queries the response was YES. [2024-06-14 12:12:47,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5581 conditions, 1084 events. 560/1084 cut-off events. For 38901/38901 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6119 event pairs, 158 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 5454. Up to 983 conditions per place. [2024-06-14 12:12:47,966 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 192 selfloop transitions, 29 changer transitions 0/223 dead transitions. [2024-06-14 12:12:47,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 223 transitions, 2451 flow [2024-06-14 12:12:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:47,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 12:12:47,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-14 12:12:47,967 INFO L175 Difference]: Start difference. First operand has 297 places, 209 transitions, 1937 flow. Second operand 10 states and 104 transitions. [2024-06-14 12:12:47,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 223 transitions, 2451 flow [2024-06-14 12:12:48,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 223 transitions, 2354 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-14 12:12:48,102 INFO L231 Difference]: Finished difference. Result has 297 places, 210 transitions, 1944 flow [2024-06-14 12:12:48,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1944, PETRI_PLACES=297, PETRI_TRANSITIONS=210} [2024-06-14 12:12:48,102 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-14 12:12:48,102 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 210 transitions, 1944 flow [2024-06-14 12:12:48,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:48,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:48,102 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 12:12:48,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 12:12:48,103 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 12:12:48,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:48,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1072309426, now seen corresponding path program 33 times [2024-06-14 12:12:48,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:48,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548687193] [2024-06-14 12:12:48,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:48,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:49,123 INFO 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 12:12:49,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:49,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548687193] [2024-06-14 12:12:49,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548687193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:49,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:49,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:49,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348994978] [2024-06-14 12:12:49,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:49,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:49,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:49,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:49,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:49,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:49,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 210 transitions, 1944 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:49,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:49,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:49,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:49,577 INFO L124 PetriNetUnfolderBase]: 593/1151 cut-off events. [2024-06-14 12:12:49,577 INFO L125 PetriNetUnfolderBase]: For 65215/65215 co-relation queries the response was YES. [2024-06-14 12:12:49,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 1151 events. 593/1151 cut-off events. For 65215/65215 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6517 event pairs, 167 based on Foata normal form. 2/1150 useless extension candidates. Maximal degree in co-relation 6466. Up to 868 conditions per place. [2024-06-14 12:12:49,589 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 173 selfloop transitions, 55 changer transitions 0/230 dead transitions. [2024-06-14 12:12:49,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 230 transitions, 2676 flow [2024-06-14 12:12:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:12:49,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:12:49,590 INFO L175 Difference]: Start difference. First operand has 297 places, 210 transitions, 1944 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:12:49,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 230 transitions, 2676 flow [2024-06-14 12:12:49,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 230 transitions, 2582 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 12:12:49,811 INFO L231 Difference]: Finished difference. Result has 299 places, 211 transitions, 2006 flow [2024-06-14 12:12:49,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2006, PETRI_PLACES=299, PETRI_TRANSITIONS=211} [2024-06-14 12:12:49,812 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-14 12:12:49,812 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 211 transitions, 2006 flow [2024-06-14 12:12:49,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:49,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:49,812 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 12:12:49,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 12:12:49,812 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 12:12:49,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1035541796, now seen corresponding path program 13 times [2024-06-14 12:12:49,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:49,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236677147] [2024-06-14 12:12:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:49,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:12:50,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:50,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236677147] [2024-06-14 12:12:50,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236677147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:50,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:50,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:50,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394953463] [2024-06-14 12:12:50,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:50,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:50,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:50,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:50,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:50,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:50,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 211 transitions, 2006 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:50,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:50,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:50,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:51,293 INFO L124 PetriNetUnfolderBase]: 609/1187 cut-off events. [2024-06-14 12:12:51,293 INFO L125 PetriNetUnfolderBase]: For 86731/86731 co-relation queries the response was YES. [2024-06-14 12:12:51,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6776 conditions, 1187 events. 609/1187 cut-off events. For 86731/86731 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6768 event pairs, 183 based on Foata normal form. 10/1194 useless extension candidates. Maximal degree in co-relation 6648. Up to 1060 conditions per place. [2024-06-14 12:12:51,303 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 21 changer transitions 16/230 dead transitions. [2024-06-14 12:12:51,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 230 transitions, 2554 flow [2024-06-14 12:12:51,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:12:51,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:12:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:12:51,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-14 12:12:51,304 INFO L175 Difference]: Start difference. First operand has 299 places, 211 transitions, 2006 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:12:51,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 230 transitions, 2554 flow [2024-06-14 12:12:51,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 230 transitions, 2358 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 12:12:51,542 INFO L231 Difference]: Finished difference. Result has 301 places, 205 transitions, 1819 flow [2024-06-14 12:12:51,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1819, PETRI_PLACES=301, PETRI_TRANSITIONS=205} [2024-06-14 12:12:51,542 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-14 12:12:51,542 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 205 transitions, 1819 flow [2024-06-14 12:12:51,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:51,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:51,543 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 12:12:51,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 12:12:51,543 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 12:12:51,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:51,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1035302786, now seen corresponding path program 14 times [2024-06-14 12:12:51,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:51,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124242285] [2024-06-14 12:12:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:51,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:52,388 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 12:12:52,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:52,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124242285] [2024-06-14 12:12:52,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124242285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:52,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:52,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:12:52,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649484966] [2024-06-14 12:12:52,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:52,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:12:52,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:52,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:12:52,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:12:52,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:52,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 205 transitions, 1819 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:52,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:52,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:52,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:52,891 INFO L124 PetriNetUnfolderBase]: 602/1182 cut-off events. [2024-06-14 12:12:52,891 INFO L125 PetriNetUnfolderBase]: For 98785/98785 co-relation queries the response was YES. [2024-06-14 12:12:52,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6898 conditions, 1182 events. 602/1182 cut-off events. For 98785/98785 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6722 event pairs, 190 based on Foata normal form. 8/1187 useless extension candidates. Maximal degree in co-relation 6771. Up to 1040 conditions per place. [2024-06-14 12:12:52,901 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 194 selfloop transitions, 19 changer transitions 9/224 dead transitions. [2024-06-14 12:12:52,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 224 transitions, 2499 flow [2024-06-14 12:12:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:52,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:12:52,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-14 12:12:52,902 INFO L175 Difference]: Start difference. First operand has 301 places, 205 transitions, 1819 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:12:52,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 224 transitions, 2499 flow [2024-06-14 12:12:53,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 224 transitions, 2439 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-14 12:12:53,218 INFO L231 Difference]: Finished difference. Result has 294 places, 201 transitions, 1787 flow [2024-06-14 12:12:53,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1767, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1787, PETRI_PLACES=294, PETRI_TRANSITIONS=201} [2024-06-14 12:12:53,218 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-14 12:12:53,219 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 201 transitions, 1787 flow [2024-06-14 12:12:53,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:53,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:53,219 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 12:12:53,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 12:12:53,219 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 12:12:53,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:53,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1065875686, now seen corresponding path program 34 times [2024-06-14 12:12:53,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:53,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705631525] [2024-06-14 12:12:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:53,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:54,380 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 12:12:54,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:54,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705631525] [2024-06-14 12:12:54,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705631525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:54,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:54,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:54,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96426802] [2024-06-14 12:12:54,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:54,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:54,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:54,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:54,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:54,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:54,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 201 transitions, 1787 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:54,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:54,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:54,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:54,876 INFO L124 PetriNetUnfolderBase]: 602/1182 cut-off events. [2024-06-14 12:12:54,876 INFO L125 PetriNetUnfolderBase]: For 101848/101848 co-relation queries the response was YES. [2024-06-14 12:12:54,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6871 conditions, 1182 events. 602/1182 cut-off events. For 101848/101848 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6709 event pairs, 188 based on Foata normal form. 12/1191 useless extension candidates. Maximal degree in co-relation 6747. Up to 973 conditions per place. [2024-06-14 12:12:54,887 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 42 changer transitions 7/220 dead transitions. [2024-06-14 12:12:54,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 220 transitions, 2350 flow [2024-06-14 12:12:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:12:54,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:12:54,888 INFO L175 Difference]: Start difference. First operand has 294 places, 201 transitions, 1787 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:12:54,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 220 transitions, 2350 flow [2024-06-14 12:12:55,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 220 transitions, 2299 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-14 12:12:55,143 INFO L231 Difference]: Finished difference. Result has 290 places, 199 transitions, 1848 flow [2024-06-14 12:12:55,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1740, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1848, PETRI_PLACES=290, PETRI_TRANSITIONS=199} [2024-06-14 12:12:55,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-14 12:12:55,143 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 199 transitions, 1848 flow [2024-06-14 12:12:55,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:55,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:55,143 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 12:12:55,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 12:12:55,144 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 12:12:55,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:55,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1072124852, now seen corresponding path program 15 times [2024-06-14 12:12:55,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:55,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552558771] [2024-06-14 12:12:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:55,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:56,177 INFO 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 12:12:56,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:56,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552558771] [2024-06-14 12:12:56,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552558771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:56,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:56,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:56,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495322405] [2024-06-14 12:12:56,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:56,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:56,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:56,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:56,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:56,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:56,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 199 transitions, 1848 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:56,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:56,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:56,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:56,625 INFO L124 PetriNetUnfolderBase]: 594/1170 cut-off events. [2024-06-14 12:12:56,625 INFO L125 PetriNetUnfolderBase]: For 91834/91834 co-relation queries the response was YES. [2024-06-14 12:12:56,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6789 conditions, 1170 events. 594/1170 cut-off events. For 91834/91834 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6664 event pairs, 188 based on Foata normal form. 10/1177 useless extension candidates. Maximal degree in co-relation 6667. Up to 963 conditions per place. [2024-06-14 12:12:56,636 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 161 selfloop transitions, 40 changer transitions 16/219 dead transitions. [2024-06-14 12:12:56,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 219 transitions, 2374 flow [2024-06-14 12:12:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:12:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:12:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 12:12:56,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-14 12:12:56,637 INFO L175 Difference]: Start difference. First operand has 290 places, 199 transitions, 1848 flow. Second operand 11 states and 123 transitions. [2024-06-14 12:12:56,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 219 transitions, 2374 flow [2024-06-14 12:12:56,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 219 transitions, 2252 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-14 12:12:56,929 INFO L231 Difference]: Finished difference. Result has 291 places, 193 transitions, 1774 flow [2024-06-14 12:12:56,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1774, PETRI_PLACES=291, PETRI_TRANSITIONS=193} [2024-06-14 12:12:56,929 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-14 12:12:56,929 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 193 transitions, 1774 flow [2024-06-14 12:12:56,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:56,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:56,930 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 12:12:56,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 12:12:56,930 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 12:12:56,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1065629732, now seen corresponding path program 16 times [2024-06-14 12:12:56,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:56,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323666531] [2024-06-14 12:12:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:56,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:57,736 INFO 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 12:12:57,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:57,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323666531] [2024-06-14 12:12:57,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323666531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:57,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:57,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:12:57,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824195242] [2024-06-14 12:12:57,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:57,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:12:57,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:57,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:12:57,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:12:57,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:57,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 193 transitions, 1774 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:57,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:57,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:57,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:58,183 INFO L124 PetriNetUnfolderBase]: 599/1189 cut-off events. [2024-06-14 12:12:58,184 INFO L125 PetriNetUnfolderBase]: For 112451/112451 co-relation queries the response was YES. [2024-06-14 12:12:58,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7537 conditions, 1189 events. 599/1189 cut-off events. For 112451/112451 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6791 event pairs, 201 based on Foata normal form. 8/1194 useless extension candidates. Maximal degree in co-relation 7415. Up to 937 conditions per place. [2024-06-14 12:12:58,196 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 171 selfloop transitions, 34 changer transitions 8/215 dead transitions. [2024-06-14 12:12:58,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 215 transitions, 2466 flow [2024-06-14 12:12:58,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:12:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:12:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 12:12:58,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-14 12:12:58,197 INFO L175 Difference]: Start difference. First operand has 291 places, 193 transitions, 1774 flow. Second operand 10 states and 117 transitions. [2024-06-14 12:12:58,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 215 transitions, 2466 flow [2024-06-14 12:12:58,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 215 transitions, 2368 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-14 12:12:58,478 INFO L231 Difference]: Finished difference. Result has 284 places, 190 transitions, 1738 flow [2024-06-14 12:12:58,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1738, PETRI_PLACES=284, PETRI_TRANSITIONS=190} [2024-06-14 12:12:58,479 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-14 12:12:58,479 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 190 transitions, 1738 flow [2024-06-14 12:12:58,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:58,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:12:58,479 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 12:12:58,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 12:12:58,479 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 12:12:58,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:12:58,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1065868742, now seen corresponding path program 17 times [2024-06-14 12:12:58,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:12:58,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705379579] [2024-06-14 12:12:58,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:12:58,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:12:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:12:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:12:59,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:12:59,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705379579] [2024-06-14 12:12:59,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705379579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:12:59,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:12:59,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:12:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344097230] [2024-06-14 12:12:59,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:12:59,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:12:59,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:12:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:12:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:12:59,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:12:59,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 190 transitions, 1738 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:12:59,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:12:59,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:12:59,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:12:59,912 INFO L124 PetriNetUnfolderBase]: 567/1125 cut-off events. [2024-06-14 12:12:59,912 INFO L125 PetriNetUnfolderBase]: For 86002/86002 co-relation queries the response was YES. [2024-06-14 12:12:59,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6478 conditions, 1125 events. 567/1125 cut-off events. For 86002/86002 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6356 event pairs, 190 based on Foata normal form. 10/1132 useless extension candidates. Maximal degree in co-relation 6359. Up to 937 conditions per place. [2024-06-14 12:12:59,922 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 30 changer transitions 18/209 dead transitions. [2024-06-14 12:12:59,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 209 transitions, 2240 flow [2024-06-14 12:12:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:12:59,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:12:59,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 12:12:59,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-14 12:12:59,923 INFO L175 Difference]: Start difference. First operand has 284 places, 190 transitions, 1738 flow. Second operand 11 states and 119 transitions. [2024-06-14 12:12:59,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 209 transitions, 2240 flow [2024-06-14 12:13:00,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 209 transitions, 2169 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:00,128 INFO L231 Difference]: Finished difference. Result has 282 places, 183 transitions, 1687 flow [2024-06-14 12:13:00,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1687, PETRI_PLACES=282, PETRI_TRANSITIONS=183} [2024-06-14 12:13:00,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-14 12:13:00,128 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 183 transitions, 1687 flow [2024-06-14 12:13:00,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:00,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:00,128 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 12:13:00,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 12:13:00,129 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 12:13:00,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:00,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1408829314, now seen corresponding path program 18 times [2024-06-14 12:13:00,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:00,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078372857] [2024-06-14 12:13:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:00,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:00,967 INFO 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 12:13:00,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:00,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078372857] [2024-06-14 12:13:00,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078372857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:00,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:00,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:13:00,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500698978] [2024-06-14 12:13:00,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:00,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:13:00,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:00,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:13:00,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:13:01,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:01,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 183 transitions, 1687 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:01,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:01,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:01,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:01,398 INFO L124 PetriNetUnfolderBase]: 566/1130 cut-off events. [2024-06-14 12:13:01,398 INFO L125 PetriNetUnfolderBase]: For 92883/92883 co-relation queries the response was YES. [2024-06-14 12:13:01,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6998 conditions, 1130 events. 566/1130 cut-off events. For 92883/92883 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6377 event pairs, 249 based on Foata normal form. 8/1137 useless extension candidates. Maximal degree in co-relation 6881. Up to 874 conditions per place. [2024-06-14 12:13:01,409 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 176 selfloop transitions, 17 changer transitions 10/205 dead transitions. [2024-06-14 12:13:01,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 205 transitions, 2345 flow [2024-06-14 12:13:01,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:01,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 12:13:01,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-14 12:13:01,410 INFO L175 Difference]: Start difference. First operand has 282 places, 183 transitions, 1687 flow. Second operand 11 states and 115 transitions. [2024-06-14 12:13:01,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 205 transitions, 2345 flow [2024-06-14 12:13:01,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 205 transitions, 2261 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-14 12:13:01,634 INFO L231 Difference]: Finished difference. Result has 273 places, 180 transitions, 1633 flow [2024-06-14 12:13:01,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1633, PETRI_PLACES=273, PETRI_TRANSITIONS=180} [2024-06-14 12:13:01,634 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-14 12:13:01,634 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 180 transitions, 1633 flow [2024-06-14 12:13:01,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:01,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:01,635 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 12:13:01,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 12:13:01,635 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 12:13:01,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:01,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1418957014, now seen corresponding path program 19 times [2024-06-14 12:13:01,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:01,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597856225] [2024-06-14 12:13:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:01,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:02,560 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 12:13:02,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:02,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597856225] [2024-06-14 12:13:02,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597856225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:02,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:02,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:13:02,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668754083] [2024-06-14 12:13:02,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:02,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:13:02,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:02,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:13:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:13:02,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:02,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 180 transitions, 1633 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:02,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:02,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:02,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:02,996 INFO L124 PetriNetUnfolderBase]: 528/1056 cut-off events. [2024-06-14 12:13:02,996 INFO L125 PetriNetUnfolderBase]: For 67777/67777 co-relation queries the response was YES. [2024-06-14 12:13:03,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5779 conditions, 1056 events. 528/1056 cut-off events. For 67777/67777 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5904 event pairs, 237 based on Foata normal form. 12/1067 useless extension candidates. Maximal degree in co-relation 5666. Up to 953 conditions per place. [2024-06-14 12:13:03,005 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 18 changer transitions 7/196 dead transitions. [2024-06-14 12:13:03,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 196 transitions, 2099 flow [2024-06-14 12:13:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:13:03,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:13:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 12:13:03,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-14 12:13:03,006 INFO L175 Difference]: Start difference. First operand has 273 places, 180 transitions, 1633 flow. Second operand 10 states and 103 transitions. [2024-06-14 12:13:03,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 196 transitions, 2099 flow [2024-06-14 12:13:03,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 196 transitions, 2045 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:03,174 INFO L231 Difference]: Finished difference. Result has 269 places, 177 transitions, 1597 flow [2024-06-14 12:13:03,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1597, PETRI_PLACES=269, PETRI_TRANSITIONS=177} [2024-06-14 12:13:03,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-14 12:13:03,175 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 177 transitions, 1597 flow [2024-06-14 12:13:03,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:03,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:03,175 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 12:13:03,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 12:13:03,175 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 12:13:03,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:03,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1418948644, now seen corresponding path program 20 times [2024-06-14 12:13:03,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:03,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69953274] [2024-06-14 12:13:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:04,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:04,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69953274] [2024-06-14 12:13:04,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69953274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:04,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:04,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:13:04,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125754097] [2024-06-14 12:13:04,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:04,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:13:04,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:04,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:13:04,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:13:04,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:04,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 177 transitions, 1597 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:04,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:04,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:04,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:04,522 INFO L124 PetriNetUnfolderBase]: 516/1036 cut-off events. [2024-06-14 12:13:04,523 INFO L125 PetriNetUnfolderBase]: For 56060/56060 co-relation queries the response was YES. [2024-06-14 12:13:04,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5629 conditions, 1036 events. 516/1036 cut-off events. For 56060/56060 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5790 event pairs, 229 based on Foata normal form. 8/1043 useless extension candidates. Maximal degree in co-relation 5518. Up to 874 conditions per place. [2024-06-14 12:13:04,532 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 13 changer transitions 10/197 dead transitions. [2024-06-14 12:13:04,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 197 transitions, 2223 flow [2024-06-14 12:13:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:13:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:13:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:13:04,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:13:04,533 INFO L175 Difference]: Start difference. First operand has 269 places, 177 transitions, 1597 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:13:04,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 197 transitions, 2223 flow [2024-06-14 12:13:04,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 197 transitions, 2111 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:13:04,666 INFO L231 Difference]: Finished difference. Result has 267 places, 172 transitions, 1489 flow [2024-06-14 12:13:04,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1489, PETRI_PLACES=267, PETRI_TRANSITIONS=172} [2024-06-14 12:13:04,667 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-14 12:13:04,667 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 172 transitions, 1489 flow [2024-06-14 12:13:04,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:04,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:04,667 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 12:13:04,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 12:13:04,667 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 12:13:04,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1704287524, now seen corresponding path program 21 times [2024-06-14 12:13:04,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:04,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257547729] [2024-06-14 12:13:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:04,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:05,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:05,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257547729] [2024-06-14 12:13:05,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257547729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:05,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:05,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:13:05,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486912168] [2024-06-14 12:13:05,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:05,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:13:05,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:05,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:13:05,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:13:05,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:05,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 172 transitions, 1489 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:05,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:05,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:05,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:06,148 INFO L124 PetriNetUnfolderBase]: 481/967 cut-off events. [2024-06-14 12:13:06,148 INFO L125 PetriNetUnfolderBase]: For 44040/44040 co-relation queries the response was YES. [2024-06-14 12:13:06,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4647 conditions, 967 events. 481/967 cut-off events. For 44040/44040 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5328 event pairs, 218 based on Foata normal form. 10/976 useless extension candidates. Maximal degree in co-relation 4536. Up to 874 conditions per place. [2024-06-14 12:13:06,157 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 8 changer transitions 20/189 dead transitions. [2024-06-14 12:13:06,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 189 transitions, 1943 flow [2024-06-14 12:13:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 12:13:06,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-14 12:13:06,158 INFO L175 Difference]: Start difference. First operand has 267 places, 172 transitions, 1489 flow. Second operand 11 states and 106 transitions. [2024-06-14 12:13:06,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 189 transitions, 1943 flow [2024-06-14 12:13:06,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 189 transitions, 1898 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:13:06,253 INFO L231 Difference]: Finished difference. Result has 263 places, 164 transitions, 1421 flow [2024-06-14 12:13:06,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1421, PETRI_PLACES=263, PETRI_TRANSITIONS=164} [2024-06-14 12:13:06,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-14 12:13:06,253 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 164 transitions, 1421 flow [2024-06-14 12:13:06,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:06,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:06,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:13:06,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 12:13:06,254 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 12:13:06,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash -264538056, now seen corresponding path program 1 times [2024-06-14 12:13:06,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:06,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122859069] [2024-06-14 12:13:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:06,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:07,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:07,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122859069] [2024-06-14 12:13:07,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122859069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:07,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:07,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:07,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985333373] [2024-06-14 12:13:07,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:07,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:07,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:07,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:07,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:07,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:07,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 164 transitions, 1421 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:07,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:07,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:07,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:07,905 INFO L124 PetriNetUnfolderBase]: 453/914 cut-off events. [2024-06-14 12:13:07,905 INFO L125 PetriNetUnfolderBase]: For 35968/35968 co-relation queries the response was YES. [2024-06-14 12:13:07,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 914 events. 453/914 cut-off events. For 35968/35968 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4998 event pairs, 108 based on Foata normal form. 6/919 useless extension candidates. Maximal degree in co-relation 4257. Up to 761 conditions per place. [2024-06-14 12:13:07,914 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 144 selfloop transitions, 22 changer transitions 18/186 dead transitions. [2024-06-14 12:13:07,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 186 transitions, 1847 flow [2024-06-14 12:13:07,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:07,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 12:13:07,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-14 12:13:07,915 INFO L175 Difference]: Start difference. First operand has 263 places, 164 transitions, 1421 flow. Second operand 11 states and 112 transitions. [2024-06-14 12:13:07,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 186 transitions, 1847 flow [2024-06-14 12:13:07,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 186 transitions, 1817 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:07,999 INFO L231 Difference]: Finished difference. Result has 252 places, 158 transitions, 1392 flow [2024-06-14 12:13:07,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1392, PETRI_PLACES=252, PETRI_TRANSITIONS=158} [2024-06-14 12:13:07,999 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-14 12:13:07,999 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 158 transitions, 1392 flow [2024-06-14 12:13:07,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:07,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:08,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:13:08,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 12:13:08,000 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 12:13:08,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:08,000 INFO L85 PathProgramCache]: Analyzing trace with hash -342239616, now seen corresponding path program 2 times [2024-06-14 12:13:08,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:08,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602834224] [2024-06-14 12:13:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:08,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:09,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:09,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602834224] [2024-06-14 12:13:09,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602834224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:09,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:09,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:09,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153491746] [2024-06-14 12:13:09,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:09,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:09,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:09,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:09,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:09,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:09,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 158 transitions, 1392 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:09,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:09,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:09,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:09,873 INFO L124 PetriNetUnfolderBase]: 432/869 cut-off events. [2024-06-14 12:13:09,873 INFO L125 PetriNetUnfolderBase]: For 31515/31515 co-relation queries the response was YES. [2024-06-14 12:13:09,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4179 conditions, 869 events. 432/869 cut-off events. For 31515/31515 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4649 event pairs, 125 based on Foata normal form. 6/874 useless extension candidates. Maximal degree in co-relation 4074. Up to 753 conditions per place. [2024-06-14 12:13:09,879 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 141 selfloop transitions, 20 changer transitions 18/181 dead transitions. [2024-06-14 12:13:09,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 181 transitions, 1810 flow [2024-06-14 12:13:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:13:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:13:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 12:13:09,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:13:09,880 INFO L175 Difference]: Start difference. First operand has 252 places, 158 transitions, 1392 flow. Second operand 12 states and 120 transitions. [2024-06-14 12:13:09,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 181 transitions, 1810 flow [2024-06-14 12:13:09,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 181 transitions, 1753 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:13:09,963 INFO L231 Difference]: Finished difference. Result has 245 places, 153 transitions, 1330 flow [2024-06-14 12:13:09,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1330, PETRI_PLACES=245, PETRI_TRANSITIONS=153} [2024-06-14 12:13:09,963 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-14 12:13:09,963 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 153 transitions, 1330 flow [2024-06-14 12:13:09,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:09,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:09,964 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 12:13:09,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 12:13:09,964 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 12:13:09,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:09,964 INFO L85 PathProgramCache]: Analyzing trace with hash -599320684, now seen corresponding path program 3 times [2024-06-14 12:13:09,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:09,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112876001] [2024-06-14 12:13:09,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:09,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:11,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:11,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112876001] [2024-06-14 12:13:11,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112876001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:11,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:11,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:11,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264242378] [2024-06-14 12:13:11,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:11,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:11,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:11,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:11,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:11,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:11,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 153 transitions, 1330 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:11,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:11,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:11,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:11,766 INFO L124 PetriNetUnfolderBase]: 412/831 cut-off events. [2024-06-14 12:13:11,767 INFO L125 PetriNetUnfolderBase]: For 31348/31348 co-relation queries the response was YES. [2024-06-14 12:13:11,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 831 events. 412/831 cut-off events. For 31348/31348 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4391 event pairs, 109 based on Foata normal form. 6/836 useless extension candidates. Maximal degree in co-relation 3897. Up to 716 conditions per place. [2024-06-14 12:13:11,773 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 22 changer transitions 15/175 dead transitions. [2024-06-14 12:13:11,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 175 transitions, 1734 flow [2024-06-14 12:13:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:13:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:13:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-14 12:13:11,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-14 12:13:11,774 INFO L175 Difference]: Start difference. First operand has 245 places, 153 transitions, 1330 flow. Second operand 12 states and 119 transitions. [2024-06-14 12:13:11,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 175 transitions, 1734 flow [2024-06-14 12:13:11,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 175 transitions, 1684 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:13:11,857 INFO L231 Difference]: Finished difference. Result has 237 places, 148 transitions, 1277 flow [2024-06-14 12:13:11,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1277, PETRI_PLACES=237, PETRI_TRANSITIONS=148} [2024-06-14 12:13:11,857 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-14 12:13:11,858 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 148 transitions, 1277 flow [2024-06-14 12:13:11,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:11,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:11,858 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 12:13:11,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 12:13:11,858 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 12:13:11,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:11,858 INFO L85 PathProgramCache]: Analyzing trace with hash -235572574, now seen corresponding path program 4 times [2024-06-14 12:13:11,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:11,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180555028] [2024-06-14 12:13:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:11,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:13,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:13,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180555028] [2024-06-14 12:13:13,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180555028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:13,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:13,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:13,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749704225] [2024-06-14 12:13:13,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:13,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:13,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:13,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:13,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:13,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:13,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 148 transitions, 1277 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:13,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:13,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:13,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:13,759 INFO L124 PetriNetUnfolderBase]: 396/803 cut-off events. [2024-06-14 12:13:13,759 INFO L125 PetriNetUnfolderBase]: For 30956/30956 co-relation queries the response was YES. [2024-06-14 12:13:13,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 803 events. 396/803 cut-off events. For 30956/30956 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4207 event pairs, 97 based on Foata normal form. 6/808 useless extension candidates. Maximal degree in co-relation 3767. Up to 676 conditions per place. [2024-06-14 12:13:13,764 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 23 changer transitions 14/170 dead transitions. [2024-06-14 12:13:13,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 170 transitions, 1673 flow [2024-06-14 12:13:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:13:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:13:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-14 12:13:13,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-14 12:13:13,766 INFO L175 Difference]: Start difference. First operand has 237 places, 148 transitions, 1277 flow. Second operand 12 states and 121 transitions. [2024-06-14 12:13:13,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 170 transitions, 1673 flow [2024-06-14 12:13:13,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 170 transitions, 1621 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:13:13,846 INFO L231 Difference]: Finished difference. Result has 231 places, 142 transitions, 1215 flow [2024-06-14 12:13:13,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1215, PETRI_PLACES=231, PETRI_TRANSITIONS=142} [2024-06-14 12:13:13,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-14 12:13:13,847 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 142 transitions, 1215 flow [2024-06-14 12:13:13,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:13,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:13,847 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 12:13:13,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 12:13:13,847 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 12:13:13,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:13,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1966841963, now seen corresponding path program 1 times [2024-06-14 12:13:13,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:13,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675179125] [2024-06-14 12:13:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:13,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:15,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:15,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675179125] [2024-06-14 12:13:15,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675179125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:15,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:15,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:15,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105557446] [2024-06-14 12:13:15,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:15,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:15,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:15,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:15,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:15,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:15,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 142 transitions, 1215 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:15,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:15,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:15,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:15,835 INFO L124 PetriNetUnfolderBase]: 382/777 cut-off events. [2024-06-14 12:13:15,835 INFO L125 PetriNetUnfolderBase]: For 34314/34314 co-relation queries the response was YES. [2024-06-14 12:13:15,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3786 conditions, 777 events. 382/777 cut-off events. For 34314/34314 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4056 event pairs, 102 based on Foata normal form. 8/784 useless extension candidates. Maximal degree in co-relation 3691. Up to 675 conditions per place. [2024-06-14 12:13:15,840 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 128 selfloop transitions, 22 changer transitions 9/161 dead transitions. [2024-06-14 12:13:15,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 161 transitions, 1613 flow [2024-06-14 12:13:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:13:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:13:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-14 12:13:15,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-14 12:13:15,841 INFO L175 Difference]: Start difference. First operand has 231 places, 142 transitions, 1215 flow. Second operand 12 states and 117 transitions. [2024-06-14 12:13:15,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 161 transitions, 1613 flow [2024-06-14 12:13:15,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 161 transitions, 1557 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:13:15,915 INFO L231 Difference]: Finished difference. Result has 225 places, 139 transitions, 1185 flow [2024-06-14 12:13:15,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1185, PETRI_PLACES=225, PETRI_TRANSITIONS=139} [2024-06-14 12:13:15,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-14 12:13:15,915 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 139 transitions, 1185 flow [2024-06-14 12:13:15,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:15,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:15,916 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 12:13:15,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 12:13:15,916 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 12:13:15,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:15,916 INFO L85 PathProgramCache]: Analyzing trace with hash -222656734, now seen corresponding path program 5 times [2024-06-14 12:13:15,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:15,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695895400] [2024-06-14 12:13:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:15,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:17,523 INFO 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 12:13:17,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:17,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695895400] [2024-06-14 12:13:17,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695895400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:17,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:17,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:17,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499781058] [2024-06-14 12:13:17,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:17,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:17,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:17,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:17,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:17,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:17,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 139 transitions, 1185 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:17,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:17,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:17,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:17,946 INFO L124 PetriNetUnfolderBase]: 373/762 cut-off events. [2024-06-14 12:13:17,946 INFO L125 PetriNetUnfolderBase]: For 31180/31180 co-relation queries the response was YES. [2024-06-14 12:13:17,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3662 conditions, 762 events. 373/762 cut-off events. For 31180/31180 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3958 event pairs, 97 based on Foata normal form. 6/767 useless extension candidates. Maximal degree in co-relation 3569. Up to 665 conditions per place. [2024-06-14 12:13:17,953 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 119 selfloop transitions, 15 changer transitions 20/156 dead transitions. [2024-06-14 12:13:17,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 156 transitions, 1539 flow [2024-06-14 12:13:17,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:17,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-14 12:13:17,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-14 12:13:17,954 INFO L175 Difference]: Start difference. First operand has 225 places, 139 transitions, 1185 flow. Second operand 11 states and 108 transitions. [2024-06-14 12:13:17,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 156 transitions, 1539 flow [2024-06-14 12:13:18,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 156 transitions, 1489 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:13:18,029 INFO L231 Difference]: Finished difference. Result has 222 places, 129 transitions, 1084 flow [2024-06-14 12:13:18,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1084, PETRI_PLACES=222, PETRI_TRANSITIONS=129} [2024-06-14 12:13:18,030 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-14 12:13:18,030 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 129 transitions, 1084 flow [2024-06-14 12:13:18,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:18,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:18,030 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 12:13:18,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 12:13:18,030 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 12:13:18,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:18,030 INFO L85 PathProgramCache]: Analyzing trace with hash -590370078, now seen corresponding path program 6 times [2024-06-14 12:13:18,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:18,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734616365] [2024-06-14 12:13:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:18,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:19,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:19,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734616365] [2024-06-14 12:13:19,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734616365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:19,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:19,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:19,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977135829] [2024-06-14 12:13:19,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:19,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:19,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:19,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:19,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:19,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:19,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 129 transitions, 1084 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:19,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:19,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:19,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:19,965 INFO L124 PetriNetUnfolderBase]: 359/726 cut-off events. [2024-06-14 12:13:19,965 INFO L125 PetriNetUnfolderBase]: For 31040/31040 co-relation queries the response was YES. [2024-06-14 12:13:19,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 726 events. 359/726 cut-off events. For 31040/31040 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3710 event pairs, 85 based on Foata normal form. 6/731 useless extension candidates. Maximal degree in co-relation 3412. Up to 627 conditions per place. [2024-06-14 12:13:19,970 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 14 changer transitions 18/151 dead transitions. [2024-06-14 12:13:19,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 151 transitions, 1440 flow [2024-06-14 12:13:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:13:19,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:13:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-14 12:13:19,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-14 12:13:19,971 INFO L175 Difference]: Start difference. First operand has 222 places, 129 transitions, 1084 flow. Second operand 12 states and 119 transitions. [2024-06-14 12:13:19,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 151 transitions, 1440 flow [2024-06-14 12:13:20,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 151 transitions, 1341 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-14 12:13:20,046 INFO L231 Difference]: Finished difference. Result has 207 places, 124 transitions, 970 flow [2024-06-14 12:13:20,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=970, PETRI_PLACES=207, PETRI_TRANSITIONS=124} [2024-06-14 12:13:20,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-14 12:13:20,047 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 124 transitions, 970 flow [2024-06-14 12:13:20,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:20,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:20,047 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 12:13:20,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 12:13:20,047 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 12:13:20,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:20,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1997470096, now seen corresponding path program 7 times [2024-06-14 12:13:20,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:20,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358352989] [2024-06-14 12:13:20,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:20,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:21,273 INFO 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 12:13:21,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:21,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358352989] [2024-06-14 12:13:21,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358352989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:21,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:21,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:21,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034320486] [2024-06-14 12:13:21,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:21,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:21,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:21,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:21,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:21,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:21,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 124 transitions, 970 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:21,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:21,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:21,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:21,683 INFO L124 PetriNetUnfolderBase]: 339/688 cut-off events. [2024-06-14 12:13:21,683 INFO L125 PetriNetUnfolderBase]: For 29678/29678 co-relation queries the response was YES. [2024-06-14 12:13:21,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3243 conditions, 688 events. 339/688 cut-off events. For 29678/29678 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3461 event pairs, 79 based on Foata normal form. 6/693 useless extension candidates. Maximal degree in co-relation 3157. Up to 590 conditions per place. [2024-06-14 12:13:21,688 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 16 changer transitions 15/145 dead transitions. [2024-06-14 12:13:21,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 145 transitions, 1312 flow [2024-06-14 12:13:21,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:13:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:13:21,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-14 12:13:21,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-14 12:13:21,688 INFO L175 Difference]: Start difference. First operand has 207 places, 124 transitions, 970 flow. Second operand 12 states and 118 transitions. [2024-06-14 12:13:21,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 145 transitions, 1312 flow [2024-06-14 12:13:21,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 145 transitions, 1274 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:13:21,753 INFO L231 Difference]: Finished difference. Result has 199 places, 119 transitions, 917 flow [2024-06-14 12:13:21,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=917, PETRI_PLACES=199, PETRI_TRANSITIONS=119} [2024-06-14 12:13:21,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-14 12:13:21,754 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 119 transitions, 917 flow [2024-06-14 12:13:21,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:21,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:21,754 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 12:13:21,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 12:13:21,754 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 12:13:21,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:21,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2001189166, now seen corresponding path program 8 times [2024-06-14 12:13:21,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:21,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926554567] [2024-06-14 12:13:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:21,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:23,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:23,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926554567] [2024-06-14 12:13:23,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926554567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:23,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:23,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:23,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282270634] [2024-06-14 12:13:23,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:23,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:23,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:23,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:23,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:23,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 119 transitions, 917 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:23,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:23,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:23,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:23,997 INFO L124 PetriNetUnfolderBase]: 323/660 cut-off events. [2024-06-14 12:13:23,997 INFO L125 PetriNetUnfolderBase]: For 29684/29684 co-relation queries the response was YES. [2024-06-14 12:13:24,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3109 conditions, 660 events. 323/660 cut-off events. For 29684/29684 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3297 event pairs, 77 based on Foata normal form. 6/665 useless extension candidates. Maximal degree in co-relation 3027. Up to 566 conditions per place. [2024-06-14 12:13:24,002 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 20 changer transitions 8/139 dead transitions. [2024-06-14 12:13:24,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 139 transitions, 1247 flow [2024-06-14 12:13:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:13:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:13:24,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-14 12:13:24,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-14 12:13:24,003 INFO L175 Difference]: Start difference. First operand has 199 places, 119 transitions, 917 flow. Second operand 12 states and 118 transitions. [2024-06-14 12:13:24,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 139 transitions, 1247 flow [2024-06-14 12:13:24,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 139 transitions, 1207 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:13:24,090 INFO L231 Difference]: Finished difference. Result has 193 places, 117 transitions, 907 flow [2024-06-14 12:13:24,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=907, PETRI_PLACES=193, PETRI_TRANSITIONS=117} [2024-06-14 12:13:24,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-14 12:13:24,090 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 117 transitions, 907 flow [2024-06-14 12:13:24,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:24,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:24,091 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 12:13:24,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 12:13:24,091 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 12:13:24,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:24,092 INFO L85 PathProgramCache]: Analyzing trace with hash 256830740, now seen corresponding path program 9 times [2024-06-14 12:13:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:24,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428732106] [2024-06-14 12:13:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:25,303 INFO 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 12:13:25,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:25,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428732106] [2024-06-14 12:13:25,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428732106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:25,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:25,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:25,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843479876] [2024-06-14 12:13:25,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:25,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:25,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:25,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:25,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 117 transitions, 907 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:25,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:25,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:25,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:25,723 INFO L124 PetriNetUnfolderBase]: 321/658 cut-off events. [2024-06-14 12:13:25,724 INFO L125 PetriNetUnfolderBase]: For 33085/33085 co-relation queries the response was YES. [2024-06-14 12:13:25,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3140 conditions, 658 events. 321/658 cut-off events. For 33085/33085 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3276 event pairs, 83 based on Foata normal form. 8/665 useless extension candidates. Maximal degree in co-relation 3061. Up to 559 conditions per place. [2024-06-14 12:13:25,727 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 18 changer transitions 11/137 dead transitions. [2024-06-14 12:13:25,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 137 transitions, 1261 flow [2024-06-14 12:13:25,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:13:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:13:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-14 12:13:25,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-14 12:13:25,728 INFO L175 Difference]: Start difference. First operand has 193 places, 117 transitions, 907 flow. Second operand 12 states and 118 transitions. [2024-06-14 12:13:25,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 137 transitions, 1261 flow [2024-06-14 12:13:25,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 137 transitions, 1217 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:25,785 INFO L231 Difference]: Finished difference. Result has 192 places, 113 transitions, 873 flow [2024-06-14 12:13:25,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=873, PETRI_PLACES=192, PETRI_TRANSITIONS=113} [2024-06-14 12:13:25,785 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-14 12:13:25,785 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 113 transitions, 873 flow [2024-06-14 12:13:25,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:25,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:25,786 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 12:13:25,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 12:13:25,786 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 12:13:25,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:25,786 INFO L85 PathProgramCache]: Analyzing trace with hash 271997682, now seen corresponding path program 10 times [2024-06-14 12:13:25,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:25,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142519251] [2024-06-14 12:13:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:25,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:27,192 INFO 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 12:13:27,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:27,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142519251] [2024-06-14 12:13:27,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142519251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:27,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:27,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:27,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345058154] [2024-06-14 12:13:27,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:27,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:27,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:27,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:27,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:27,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:27,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 113 transitions, 873 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:27,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:27,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:27,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:27,609 INFO L124 PetriNetUnfolderBase]: 311/640 cut-off events. [2024-06-14 12:13:27,609 INFO L125 PetriNetUnfolderBase]: For 29606/29606 co-relation queries the response was YES. [2024-06-14 12:13:27,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3016 conditions, 640 events. 311/640 cut-off events. For 29606/29606 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3171 event pairs, 77 based on Foata normal form. 6/645 useless extension candidates. Maximal degree in co-relation 2937. Up to 539 conditions per place. [2024-06-14 12:13:27,613 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 11 changer transitions 24/134 dead transitions. [2024-06-14 12:13:27,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 134 transitions, 1195 flow [2024-06-14 12:13:27,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:13:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:13:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-14 12:13:27,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-14 12:13:27,614 INFO L175 Difference]: Start difference. First operand has 192 places, 113 transitions, 873 flow. Second operand 12 states and 117 transitions. [2024-06-14 12:13:27,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 134 transitions, 1195 flow [2024-06-14 12:13:27,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 134 transitions, 1149 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:13:27,668 INFO L231 Difference]: Finished difference. Result has 188 places, 103 transitions, 766 flow [2024-06-14 12:13:27,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=766, PETRI_PLACES=188, PETRI_TRANSITIONS=103} [2024-06-14 12:13:27,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-14 12:13:27,669 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 103 transitions, 766 flow [2024-06-14 12:13:27,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:27,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:27,669 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 12:13:27,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 12:13:27,670 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 12:13:27,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:27,670 INFO L85 PathProgramCache]: Analyzing trace with hash -925254790, now seen corresponding path program 11 times [2024-06-14 12:13:27,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:27,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120474930] [2024-06-14 12:13:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:27,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:28,895 INFO 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 12:13:28,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:28,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120474930] [2024-06-14 12:13:28,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120474930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:28,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:28,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:28,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526533554] [2024-06-14 12:13:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:28,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:28,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:28,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:28,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:29,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:29,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 103 transitions, 766 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:29,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:29,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:29,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:29,258 INFO L124 PetriNetUnfolderBase]: 287/590 cut-off events. [2024-06-14 12:13:29,258 INFO L125 PetriNetUnfolderBase]: For 28386/28386 co-relation queries the response was YES. [2024-06-14 12:13:29,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 590 events. 287/590 cut-off events. For 28386/28386 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2840 event pairs, 75 based on Foata normal form. 6/595 useless extension candidates. Maximal degree in co-relation 2692. Up to 519 conditions per place. [2024-06-14 12:13:29,262 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 10 changer transitions 16/122 dead transitions. [2024-06-14 12:13:29,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 122 transitions, 1056 flow [2024-06-14 12:13:29,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:13:29,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:13:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-14 12:13:29,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-14 12:13:29,263 INFO L175 Difference]: Start difference. First operand has 188 places, 103 transitions, 766 flow. Second operand 12 states and 112 transitions. [2024-06-14 12:13:29,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 122 transitions, 1056 flow [2024-06-14 12:13:29,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 122 transitions, 1019 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:13:29,316 INFO L231 Difference]: Finished difference. Result has 177 places, 98 transitions, 709 flow [2024-06-14 12:13:29,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=709, PETRI_PLACES=177, PETRI_TRANSITIONS=98} [2024-06-14 12:13:29,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-14 12:13:29,317 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 98 transitions, 709 flow [2024-06-14 12:13:29,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:29,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:29,317 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 12:13:29,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 12:13:29,317 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 12:13:29,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1783534674, now seen corresponding path program 12 times [2024-06-14 12:13:29,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:29,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291063245] [2024-06-14 12:13:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:29,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:30,785 INFO 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 12:13:30,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:30,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291063245] [2024-06-14 12:13:30,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291063245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:30,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:30,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:30,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934811063] [2024-06-14 12:13:30,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:30,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:30,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:30,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:30,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:30,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:30,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 98 transitions, 709 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:30,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:30,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:30,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:31,158 INFO L124 PetriNetUnfolderBase]: 274/563 cut-off events. [2024-06-14 12:13:31,158 INFO L125 PetriNetUnfolderBase]: For 28324/28324 co-relation queries the response was YES. [2024-06-14 12:13:31,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 563 events. 274/563 cut-off events. For 28324/28324 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2671 event pairs, 71 based on Foata normal form. 6/568 useless extension candidates. Maximal degree in co-relation 2564. Up to 477 conditions per place. [2024-06-14 12:13:31,161 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 89 selfloop transitions, 13 changer transitions 14/118 dead transitions. [2024-06-14 12:13:31,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 118 transitions, 995 flow [2024-06-14 12:13:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:13:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:13:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-14 12:13:31,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-14 12:13:31,162 INFO L175 Difference]: Start difference. First operand has 177 places, 98 transitions, 709 flow. Second operand 12 states and 115 transitions. [2024-06-14 12:13:31,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 118 transitions, 995 flow [2024-06-14 12:13:31,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 118 transitions, 965 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:13:31,213 INFO L231 Difference]: Finished difference. Result has 171 places, 94 transitions, 675 flow [2024-06-14 12:13:31,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=675, PETRI_PLACES=171, PETRI_TRANSITIONS=94} [2024-06-14 12:13:31,213 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-14 12:13:31,213 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 94 transitions, 675 flow [2024-06-14 12:13:31,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:31,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:31,213 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 12:13:31,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 12:13:31,214 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 12:13:31,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:31,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1925637744, now seen corresponding path program 13 times [2024-06-14 12:13:31,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:31,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382175181] [2024-06-14 12:13:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:31,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:32,610 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 12:13:32,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:32,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382175181] [2024-06-14 12:13:32,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382175181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:32,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:32,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:32,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258861675] [2024-06-14 12:13:32,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:32,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:32,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:32,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:32,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:32,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:32,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 94 transitions, 675 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:32,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:32,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:32,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:32,999 INFO L124 PetriNetUnfolderBase]: 260/537 cut-off events. [2024-06-14 12:13:32,999 INFO L125 PetriNetUnfolderBase]: For 28310/28310 co-relation queries the response was YES. [2024-06-14 12:13:33,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2531 conditions, 537 events. 260/537 cut-off events. For 28310/28310 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2510 event pairs, 67 based on Foata normal form. 6/542 useless extension candidates. Maximal degree in co-relation 2458. Up to 451 conditions per place. [2024-06-14 12:13:33,003 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 80 selfloop transitions, 8 changer transitions 22/112 dead transitions. [2024-06-14 12:13:33,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 112 transitions, 943 flow [2024-06-14 12:13:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-14 12:13:33,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-14 12:13:33,004 INFO L175 Difference]: Start difference. First operand has 171 places, 94 transitions, 675 flow. Second operand 11 states and 107 transitions. [2024-06-14 12:13:33,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 112 transitions, 943 flow [2024-06-14 12:13:33,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 112 transitions, 909 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:33,054 INFO L231 Difference]: Finished difference. Result has 165 places, 86 transitions, 593 flow [2024-06-14 12:13:33,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=593, PETRI_PLACES=165, PETRI_TRANSITIONS=86} [2024-06-14 12:13:33,054 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-14 12:13:33,054 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 86 transitions, 593 flow [2024-06-14 12:13:33,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:33,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:33,055 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 12:13:33,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 12:13:33,055 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 12:13:33,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:33,055 INFO L85 PathProgramCache]: Analyzing trace with hash 277717444, now seen corresponding path program 14 times [2024-06-14 12:13:33,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:33,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020081654] [2024-06-14 12:13:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:33,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:34,426 INFO 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 12:13:34,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:34,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020081654] [2024-06-14 12:13:34,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020081654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:34,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:34,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:34,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294455020] [2024-06-14 12:13:34,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:34,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:34,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:34,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:34,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:34,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:34,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 86 transitions, 593 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:34,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:34,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:34,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:34,879 INFO L124 PetriNetUnfolderBase]: 242/495 cut-off events. [2024-06-14 12:13:34,880 INFO L125 PetriNetUnfolderBase]: For 28210/28210 co-relation queries the response was YES. [2024-06-14 12:13:34,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2356 conditions, 495 events. 242/495 cut-off events. For 28210/28210 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2249 event pairs, 61 based on Foata normal form. 6/500 useless extension candidates. Maximal degree in co-relation 2285. Up to 413 conditions per place. [2024-06-14 12:13:34,882 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 76 selfloop transitions, 8 changer transitions 18/104 dead transitions. [2024-06-14 12:13:34,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 104 transitions, 843 flow [2024-06-14 12:13:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:34,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-14 12:13:34,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-14 12:13:34,889 INFO L175 Difference]: Start difference. First operand has 165 places, 86 transitions, 593 flow. Second operand 11 states and 104 transitions. [2024-06-14 12:13:34,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 104 transitions, 843 flow [2024-06-14 12:13:34,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 104 transitions, 781 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-06-14 12:13:34,962 INFO L231 Difference]: Finished difference. Result has 149 places, 81 transitions, 525 flow [2024-06-14 12:13:34,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=525, PETRI_PLACES=149, PETRI_TRANSITIONS=81} [2024-06-14 12:13:34,963 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-14 12:13:34,963 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 81 transitions, 525 flow [2024-06-14 12:13:34,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:34,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:34,963 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 12:13:34,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 12:13:34,963 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 12:13:34,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:34,964 INFO L85 PathProgramCache]: Analyzing trace with hash -888928324, now seen corresponding path program 15 times [2024-06-14 12:13:34,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:34,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516748960] [2024-06-14 12:13:34,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:34,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:36,468 INFO 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 12:13:36,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:36,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516748960] [2024-06-14 12:13:36,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516748960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:36,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:36,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:36,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455002756] [2024-06-14 12:13:36,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:36,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:36,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:36,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:36,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:36,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:36,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 81 transitions, 525 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:36,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:36,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:36,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:36,857 INFO L124 PetriNetUnfolderBase]: 222/457 cut-off events. [2024-06-14 12:13:36,858 INFO L125 PetriNetUnfolderBase]: For 28073/28073 co-relation queries the response was YES. [2024-06-14 12:13:36,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 457 events. 222/457 cut-off events. For 28073/28073 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2021 event pairs, 55 based on Foata normal form. 6/462 useless extension candidates. Maximal degree in co-relation 2111. Up to 376 conditions per place. [2024-06-14 12:13:36,860 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 71 selfloop transitions, 10 changer transitions 15/98 dead transitions. [2024-06-14 12:13:36,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 98 transitions, 761 flow [2024-06-14 12:13:36,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-14 12:13:36,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-14 12:13:36,861 INFO L175 Difference]: Start difference. First operand has 149 places, 81 transitions, 525 flow. Second operand 11 states and 103 transitions. [2024-06-14 12:13:36,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 98 transitions, 761 flow [2024-06-14 12:13:36,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 98 transitions, 735 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:36,908 INFO L231 Difference]: Finished difference. Result has 141 places, 76 transitions, 492 flow [2024-06-14 12:13:36,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=492, PETRI_PLACES=141, PETRI_TRANSITIONS=76} [2024-06-14 12:13:36,908 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-14 12:13:36,908 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 76 transitions, 492 flow [2024-06-14 12:13:36,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:36,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:36,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:13:36,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 12:13:36,908 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 12:13:36,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:36,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1943557482, now seen corresponding path program 16 times [2024-06-14 12:13:36,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:36,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868095722] [2024-06-14 12:13:36,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:36,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:38,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868095722] [2024-06-14 12:13:38,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868095722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:38,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:38,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:38,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495665867] [2024-06-14 12:13:38,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:38,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:38,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:38,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:38,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 76 transitions, 492 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:38,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:38,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:38,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:39,110 INFO L124 PetriNetUnfolderBase]: 206/429 cut-off events. [2024-06-14 12:13:39,110 INFO L125 PetriNetUnfolderBase]: For 24076/24076 co-relation queries the response was YES. [2024-06-14 12:13:39,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 429 events. 206/429 cut-off events. For 24076/24076 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1866 event pairs, 51 based on Foata normal form. 6/434 useless extension candidates. Maximal degree in co-relation 1977. Up to 336 conditions per place. [2024-06-14 12:13:39,112 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 66 selfloop transitions, 11 changer transitions 14/93 dead transitions. [2024-06-14 12:13:39,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 93 transitions, 720 flow [2024-06-14 12:13:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-14 12:13:39,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-14 12:13:39,116 INFO L175 Difference]: Start difference. First operand has 141 places, 76 transitions, 492 flow. Second operand 11 states and 105 transitions. [2024-06-14 12:13:39,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 93 transitions, 720 flow [2024-06-14 12:13:39,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 93 transitions, 692 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:39,164 INFO L231 Difference]: Finished difference. Result has 135 places, 70 transitions, 447 flow [2024-06-14 12:13:39,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=447, PETRI_PLACES=135, PETRI_TRANSITIONS=70} [2024-06-14 12:13:39,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-14 12:13:39,165 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 70 transitions, 447 flow [2024-06-14 12:13:39,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:39,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:39,165 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 12:13:39,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 12:13:39,166 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 12:13:39,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:39,166 INFO L85 PathProgramCache]: Analyzing trace with hash -885209254, now seen corresponding path program 17 times [2024-06-14 12:13:39,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:39,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119498331] [2024-06-14 12:13:39,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:39,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:40,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119498331] [2024-06-14 12:13:40,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119498331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:40,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:40,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:40,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686841836] [2024-06-14 12:13:40,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:40,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:40,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:40,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:40,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:41,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:41,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 70 transitions, 447 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:41,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:41,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:41,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:41,283 INFO L124 PetriNetUnfolderBase]: 188/395 cut-off events. [2024-06-14 12:13:41,283 INFO L125 PetriNetUnfolderBase]: For 21218/21218 co-relation queries the response was YES. [2024-06-14 12:13:41,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 395 events. 188/395 cut-off events. For 21218/21218 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1675 event pairs, 51 based on Foata normal form. 6/400 useless extension candidates. Maximal degree in co-relation 1823. Up to 332 conditions per place. [2024-06-14 12:13:41,285 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 10 changer transitions 8/84 dead transitions. [2024-06-14 12:13:41,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 84 transitions, 647 flow [2024-06-14 12:13:41,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:41,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-14 12:13:41,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-14 12:13:41,286 INFO L175 Difference]: Start difference. First operand has 135 places, 70 transitions, 447 flow. Second operand 11 states and 100 transitions. [2024-06-14 12:13:41,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 84 transitions, 647 flow [2024-06-14 12:13:41,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 84 transitions, 611 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 12:13:41,312 INFO L231 Difference]: Finished difference. Result has 127 places, 68 transitions, 424 flow [2024-06-14 12:13:41,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=424, PETRI_PLACES=127, PETRI_TRANSITIONS=68} [2024-06-14 12:13:41,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-14 12:13:41,313 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 68 transitions, 424 flow [2024-06-14 12:13:41,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:41,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:41,313 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 12:13:41,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-14 12:13:41,313 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 12:13:41,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:41,314 INFO L85 PathProgramCache]: Analyzing trace with hash -622212750, now seen corresponding path program 18 times [2024-06-14 12:13:41,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:41,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724627471] [2024-06-14 12:13:41,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:41,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:42,958 INFO 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 12:13:42,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:42,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724627471] [2024-06-14 12:13:42,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724627471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:42,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:42,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:42,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926550645] [2024-06-14 12:13:42,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:42,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:42,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:42,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:42,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:43,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:43,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 68 transitions, 424 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:43,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:43,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:43,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:43,330 INFO L124 PetriNetUnfolderBase]: 179/380 cut-off events. [2024-06-14 12:13:43,330 INFO L125 PetriNetUnfolderBase]: For 18591/18591 co-relation queries the response was YES. [2024-06-14 12:13:43,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 380 events. 179/380 cut-off events. For 18591/18591 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1598 event pairs, 56 based on Foata normal form. 8/387 useless extension candidates. Maximal degree in co-relation 1621. Up to 312 conditions per place. [2024-06-14 12:13:43,332 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 55 selfloop transitions, 5 changer transitions 19/81 dead transitions. [2024-06-14 12:13:43,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 81 transitions, 616 flow [2024-06-14 12:13:43,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-14 12:13:43,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-14 12:13:43,333 INFO L175 Difference]: Start difference. First operand has 127 places, 68 transitions, 424 flow. Second operand 11 states and 100 transitions. [2024-06-14 12:13:43,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 81 transitions, 616 flow [2024-06-14 12:13:43,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 81 transitions, 592 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:43,350 INFO L231 Difference]: Finished difference. Result has 125 places, 59 transitions, 346 flow [2024-06-14 12:13:43,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=346, PETRI_PLACES=125, PETRI_TRANSITIONS=59} [2024-06-14 12:13:43,350 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-14 12:13:43,350 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 59 transitions, 346 flow [2024-06-14 12:13:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:43,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:43,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:13:43,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-14 12:13:43,351 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 12:13:43,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash 483314086, now seen corresponding path program 19 times [2024-06-14 12:13:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484217977] [2024-06-14 12:13:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:44,653 INFO 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 12:13:44,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:44,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484217977] [2024-06-14 12:13:44,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484217977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:44,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:44,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:44,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899334975] [2024-06-14 12:13:44,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:44,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:44,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:44,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:44,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:44,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:44,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 59 transitions, 346 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:44,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:44,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:44,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:44,972 INFO L124 PetriNetUnfolderBase]: 163/346 cut-off events. [2024-06-14 12:13:44,972 INFO L125 PetriNetUnfolderBase]: For 15597/15597 co-relation queries the response was YES. [2024-06-14 12:13:44,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 346 events. 163/346 cut-off events. For 15597/15597 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1407 event pairs, 50 based on Foata normal form. 6/351 useless extension candidates. Maximal degree in co-relation 1448. Up to 282 conditions per place. [2024-06-14 12:13:44,974 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 50 selfloop transitions, 6 changer transitions 16/74 dead transitions. [2024-06-14 12:13:44,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 74 transitions, 528 flow [2024-06-14 12:13:44,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:44,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-14 12:13:44,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-14 12:13:44,975 INFO L175 Difference]: Start difference. First operand has 125 places, 59 transitions, 346 flow. Second operand 11 states and 99 transitions. [2024-06-14 12:13:44,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 74 transitions, 528 flow [2024-06-14 12:13:44,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 74 transitions, 484 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-06-14 12:13:44,987 INFO L231 Difference]: Finished difference. Result has 110 places, 54 transitions, 298 flow [2024-06-14 12:13:44,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=298, PETRI_PLACES=110, PETRI_TRANSITIONS=54} [2024-06-14 12:13:44,988 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-14 12:13:44,988 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 54 transitions, 298 flow [2024-06-14 12:13:44,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:44,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:44,988 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 12:13:44,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-14 12:13:44,988 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 12:13:44,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:44,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1948358830, now seen corresponding path program 20 times [2024-06-14 12:13:44,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:44,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722756715] [2024-06-14 12:13:44,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:44,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:46,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:46,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722756715] [2024-06-14 12:13:46,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722756715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:46,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:46,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:46,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882302954] [2024-06-14 12:13:46,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:46,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:46,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:46,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:46,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:46,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:46,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 54 transitions, 298 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:46,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:46,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:46,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:46,775 INFO L124 PetriNetUnfolderBase]: 150/319 cut-off events. [2024-06-14 12:13:46,775 INFO L125 PetriNetUnfolderBase]: For 12279/12279 co-relation queries the response was YES. [2024-06-14 12:13:46,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 319 events. 150/319 cut-off events. For 12279/12279 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1249 event pairs, 46 based on Foata normal form. 6/324 useless extension candidates. Maximal degree in co-relation 1259. Up to 250 conditions per place. [2024-06-14 12:13:46,777 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 7 changer transitions 12/68 dead transitions. [2024-06-14 12:13:46,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 68 transitions, 462 flow [2024-06-14 12:13:46,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:13:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:13:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-14 12:13:46,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-14 12:13:46,779 INFO L175 Difference]: Start difference. First operand has 110 places, 54 transitions, 298 flow. Second operand 10 states and 93 transitions. [2024-06-14 12:13:46,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 68 transitions, 462 flow [2024-06-14 12:13:46,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 68 transitions, 440 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:46,788 INFO L231 Difference]: Finished difference. Result has 101 places, 50 transitions, 275 flow [2024-06-14 12:13:46,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=275, PETRI_PLACES=101, PETRI_TRANSITIONS=50} [2024-06-14 12:13:46,789 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-14 12:13:46,789 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 50 transitions, 275 flow [2024-06-14 12:13:46,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:46,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:46,789 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 12:13:46,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-14 12:13:46,789 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 12:13:46,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:46,789 INFO L85 PathProgramCache]: Analyzing trace with hash -517068868, now seen corresponding path program 21 times [2024-06-14 12:13:46,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:46,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552093036] [2024-06-14 12:13:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:46,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:48,283 INFO 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 12:13:48,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:48,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552093036] [2024-06-14 12:13:48,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552093036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:48,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:48,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:48,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799276563] [2024-06-14 12:13:48,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:48,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:48,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:48,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:48,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:48,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:48,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 50 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:48,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:48,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:48,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:48,561 INFO L124 PetriNetUnfolderBase]: 136/293 cut-off events. [2024-06-14 12:13:48,562 INFO L125 PetriNetUnfolderBase]: For 9769/9769 co-relation queries the response was YES. [2024-06-14 12:13:48,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 293 events. 136/293 cut-off events. For 9769/9769 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1111 event pairs, 42 based on Foata normal form. 6/298 useless extension candidates. Maximal degree in co-relation 1145. Up to 224 conditions per place. [2024-06-14 12:13:48,564 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 39 selfloop transitions, 3 changer transitions 22/66 dead transitions. [2024-06-14 12:13:48,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 66 transitions, 439 flow [2024-06-14 12:13:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:48,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-14 12:13:48,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-14 12:13:48,565 INFO L175 Difference]: Start difference. First operand has 101 places, 50 transitions, 275 flow. Second operand 11 states and 99 transitions. [2024-06-14 12:13:48,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 66 transitions, 439 flow [2024-06-14 12:13:48,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 66 transitions, 417 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:48,576 INFO L231 Difference]: Finished difference. Result has 96 places, 43 transitions, 229 flow [2024-06-14 12:13:48,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=229, PETRI_PLACES=96, PETRI_TRANSITIONS=43} [2024-06-14 12:13:48,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-14 12:13:48,577 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 43 transitions, 229 flow [2024-06-14 12:13:48,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:48,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:48,577 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 12:13:48,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-14 12:13:48,577 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 12:13:48,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash -612340984, now seen corresponding path program 22 times [2024-06-14 12:13:48,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:48,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427533629] [2024-06-14 12:13:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:48,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:49,990 INFO 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 12:13:49,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:49,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427533629] [2024-06-14 12:13:49,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427533629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:49,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:49,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:49,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057140545] [2024-06-14 12:13:49,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:49,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:49,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:49,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:49,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:50,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:50,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 43 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:50,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:50,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:50,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:50,239 INFO L124 PetriNetUnfolderBase]: 117/253 cut-off events. [2024-06-14 12:13:50,239 INFO L125 PetriNetUnfolderBase]: For 8052/8052 co-relation queries the response was YES. [2024-06-14 12:13:50,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 253 events. 117/253 cut-off events. For 8052/8052 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 914 event pairs, 38 based on Foata normal form. 6/258 useless extension candidates. Maximal degree in co-relation 993. Up to 186 conditions per place. [2024-06-14 12:13:50,240 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 35 selfloop transitions, 10 changer transitions 11/58 dead transitions. [2024-06-14 12:13:50,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 58 transitions, 373 flow [2024-06-14 12:13:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-14 12:13:50,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-14 12:13:50,241 INFO L175 Difference]: Start difference. First operand has 96 places, 43 transitions, 229 flow. Second operand 11 states and 101 transitions. [2024-06-14 12:13:50,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 58 transitions, 373 flow [2024-06-14 12:13:50,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 58 transitions, 351 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-14 12:13:50,246 INFO L231 Difference]: Finished difference. Result has 83 places, 40 transitions, 216 flow [2024-06-14 12:13:50,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=216, PETRI_PLACES=83, PETRI_TRANSITIONS=40} [2024-06-14 12:13:50,246 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-14 12:13:50,246 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 40 transitions, 216 flow [2024-06-14 12:13:50,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:50,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:50,247 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 12:13:50,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-14 12:13:50,247 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 12:13:50,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1061474448, now seen corresponding path program 23 times [2024-06-14 12:13:50,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:50,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132839817] [2024-06-14 12:13:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:50,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:51,582 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 12:13:51,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:51,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132839817] [2024-06-14 12:13:51,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132839817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:51,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:51,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:51,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378642949] [2024-06-14 12:13:51,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:51,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:51,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:51,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:51,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:51,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:51,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 40 transitions, 216 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:51,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:51,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:51,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:51,912 INFO L124 PetriNetUnfolderBase]: 107/235 cut-off events. [2024-06-14 12:13:51,912 INFO L125 PetriNetUnfolderBase]: For 5154/5154 co-relation queries the response was YES. [2024-06-14 12:13:51,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 235 events. 107/235 cut-off events. For 5154/5154 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 824 event pairs, 36 based on Foata normal form. 6/240 useless extension candidates. Maximal degree in co-relation 888. Up to 139 conditions per place. [2024-06-14 12:13:51,913 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 26 selfloop transitions, 12 changer transitions 14/54 dead transitions. [2024-06-14 12:13:51,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 54 transitions, 350 flow [2024-06-14 12:13:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-14 12:13:51,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2844574780058651 [2024-06-14 12:13:51,914 INFO L175 Difference]: Start difference. First operand has 83 places, 40 transitions, 216 flow. Second operand 11 states and 97 transitions. [2024-06-14 12:13:51,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 54 transitions, 350 flow [2024-06-14 12:13:51,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 54 transitions, 324 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:51,919 INFO L231 Difference]: Finished difference. Result has 79 places, 36 transitions, 199 flow [2024-06-14 12:13:51,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=199, PETRI_PLACES=79, PETRI_TRANSITIONS=36} [2024-06-14 12:13:51,919 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-14 12:13:51,919 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 36 transitions, 199 flow [2024-06-14 12:13:51,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:51,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:51,919 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 12:13:51,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-14 12:13:51,919 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 12:13:51,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:51,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1057899528, now seen corresponding path program 24 times [2024-06-14 12:13:51,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:51,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813449683] [2024-06-14 12:13:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:51,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:53,391 INFO 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 12:13:53,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:53,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813449683] [2024-06-14 12:13:53,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813449683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:53,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:53,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:53,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124782174] [2024-06-14 12:13:53,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:53,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:53,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:53,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:53,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:53,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:53,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 36 transitions, 199 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:53,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:53,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:53,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:53,745 INFO L124 PetriNetUnfolderBase]: 93/209 cut-off events. [2024-06-14 12:13:53,745 INFO L125 PetriNetUnfolderBase]: For 4338/4338 co-relation queries the response was YES. [2024-06-14 12:13:53,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 209 events. 93/209 cut-off events. For 4338/4338 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 709 event pairs, 32 based on Foata normal form. 6/214 useless extension candidates. Maximal degree in co-relation 798. Up to 142 conditions per place. [2024-06-14 12:13:53,746 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 26 selfloop transitions, 6 changer transitions 17/51 dead transitions. [2024-06-14 12:13:53,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 51 transitions, 329 flow [2024-06-14 12:13:53,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:53,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-14 12:13:53,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873900293255132 [2024-06-14 12:13:53,747 INFO L175 Difference]: Start difference. First operand has 79 places, 36 transitions, 199 flow. Second operand 11 states and 98 transitions. [2024-06-14 12:13:53,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 51 transitions, 329 flow [2024-06-14 12:13:53,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 51 transitions, 297 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:53,752 INFO L231 Difference]: Finished difference. Result has 73 places, 31 transitions, 159 flow [2024-06-14 12:13:53,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=159, PETRI_PLACES=73, PETRI_TRANSITIONS=31} [2024-06-14 12:13:53,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-14 12:13:53,752 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 31 transitions, 159 flow [2024-06-14 12:13:53,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:53,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:53,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:13:53,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-14 12:13:53,753 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 12:13:53,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1118147156, now seen corresponding path program 25 times [2024-06-14 12:13:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733046378] [2024-06-14 12:13:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:55,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:55,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733046378] [2024-06-14 12:13:55,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733046378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:55,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:55,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:55,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124573149] [2024-06-14 12:13:55,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:55,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:55,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:55,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:55,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:55,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 31 transitions, 159 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:55,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:55,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:55,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:56,132 INFO L124 PetriNetUnfolderBase]: 77/177 cut-off events. [2024-06-14 12:13:56,132 INFO L125 PetriNetUnfolderBase]: For 3214/3214 co-relation queries the response was YES. [2024-06-14 12:13:56,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 177 events. 77/177 cut-off events. For 3214/3214 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 562 event pairs, 30 based on Foata normal form. 6/182 useless extension candidates. Maximal degree in co-relation 666. Up to 95 conditions per place. [2024-06-14 12:13:56,133 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 20 selfloop transitions, 6 changer transitions 17/45 dead transitions. [2024-06-14 12:13:56,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 45 transitions, 275 flow [2024-06-14 12:13:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-14 12:13:56,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-14 12:13:56,134 INFO L175 Difference]: Start difference. First operand has 73 places, 31 transitions, 159 flow. Second operand 11 states and 96 transitions. [2024-06-14 12:13:56,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 45 transitions, 275 flow [2024-06-14 12:13:56,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 45 transitions, 253 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:56,136 INFO L231 Difference]: Finished difference. Result has 65 places, 25 transitions, 124 flow [2024-06-14 12:13:56,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=124, PETRI_PLACES=65, PETRI_TRANSITIONS=25} [2024-06-14 12:13:56,136 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-14 12:13:56,136 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 25 transitions, 124 flow [2024-06-14 12:13:56,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:56,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:56,136 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 12:13:56,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-14 12:13:56,137 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 12:13:56,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:56,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1775327390, now seen corresponding path program 26 times [2024-06-14 12:13:56,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:56,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341481185] [2024-06-14 12:13:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:56,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:57,372 INFO 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 12:13:57,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:57,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341481185] [2024-06-14 12:13:57,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341481185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:57,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:57,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:57,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122120673] [2024-06-14 12:13:57,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:57,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:57,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:57,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:57,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:57,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:57,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 25 transitions, 124 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:57,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:57,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:57,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:57,614 INFO L124 PetriNetUnfolderBase]: 48/114 cut-off events. [2024-06-14 12:13:57,614 INFO L125 PetriNetUnfolderBase]: For 1346/1346 co-relation queries the response was YES. [2024-06-14 12:13:57,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 114 events. 48/114 cut-off events. For 1346/1346 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 280 event pairs, 15 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 376. Up to 52 conditions per place. [2024-06-14 12:13:57,614 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 7 changer transitions 11/38 dead transitions. [2024-06-14 12:13:57,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 38 transitions, 224 flow [2024-06-14 12:13:57,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:57,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 92 transitions. [2024-06-14 12:13:57,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2697947214076246 [2024-06-14 12:13:57,615 INFO L175 Difference]: Start difference. First operand has 65 places, 25 transitions, 124 flow. Second operand 11 states and 92 transitions. [2024-06-14 12:13:57,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 38 transitions, 224 flow [2024-06-14 12:13:57,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 38 transitions, 202 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:13:57,616 INFO L231 Difference]: Finished difference. Result has 56 places, 22 transitions, 104 flow [2024-06-14 12:13:57,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=104, PETRI_PLACES=56, PETRI_TRANSITIONS=22} [2024-06-14 12:13:57,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-06-14 12:13:57,616 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 22 transitions, 104 flow [2024-06-14 12:13:57,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:57,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:13:57,617 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 12:13:57,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-14 12:13:57,617 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 12:13:57,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:13:57,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2058282482, now seen corresponding path program 27 times [2024-06-14 12:13:57,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:13:57,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122533563] [2024-06-14 12:13:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:13:57,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:13:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:13:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:13:59,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:13:59,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122533563] [2024-06-14 12:13:59,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122533563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:13:59,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:13:59,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:13:59,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698876071] [2024-06-14 12:13:59,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:13:59,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:13:59,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:13:59,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:13:59,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:13:59,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-14 12:13:59,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 22 transitions, 104 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:59,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:13:59,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-14 12:13:59,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:13:59,764 INFO L124 PetriNetUnfolderBase]: 23/63 cut-off events. [2024-06-14 12:13:59,764 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-06-14 12:13:59,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 63 events. 23/63 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 6/68 useless extension candidates. Maximal degree in co-relation 166. Up to 24 conditions per place. [2024-06-14 12:13:59,764 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-14 12:13:59,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 30 transitions, 154 flow [2024-06-14 12:13:59,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:13:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:13:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 84 transitions. [2024-06-14 12:13:59,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24633431085043989 [2024-06-14 12:13:59,765 INFO L175 Difference]: Start difference. First operand has 56 places, 22 transitions, 104 flow. Second operand 11 states and 84 transitions. [2024-06-14 12:13:59,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 30 transitions, 154 flow [2024-06-14 12:13:59,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 30 transitions, 122 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-14 12:13:59,766 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2024-06-14 12:13:59,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2024-06-14 12:13:59,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-14 12:13:59,766 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2024-06-14 12:13:59,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:13:59,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:13:59,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:13:59,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:13:59,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:13:59,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-14 12:13:59,771 INFO L445 BasicCegarLoop]: Path program histogram: [34, 27, 21, 20, 15, 15, 10, 10, 6, 5, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:13:59,773 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:13:59,773 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:13:59,777 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:13:59,777 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:13:59,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:13:59 BasicIcfg [2024-06-14 12:13:59,778 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:13:59,779 INFO L158 Benchmark]: Toolchain (without parser) took 308041.37ms. Allocated memory was 151.0MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 112.6MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 75.0MB. Max. memory is 16.1GB. [2024-06-14 12:13:59,779 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 80.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:13:59,779 INFO L158 Benchmark]: CDTParser took 0.07ms. Allocated memory is still 109.1MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:13:59,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 684.69ms. Allocated memory is still 151.0MB. Free memory was 111.9MB in the beginning and 77.7MB in the end (delta: 34.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-14 12:13:59,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.03ms. Allocated memory is still 151.0MB. Free memory was 77.7MB in the beginning and 74.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 12:13:59,780 INFO L158 Benchmark]: Boogie Preprocessor took 88.60ms. Allocated memory is still 151.0MB. Free memory was 74.2MB in the beginning and 70.7MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:13:59,780 INFO L158 Benchmark]: RCFGBuilder took 744.98ms. Allocated memory is still 151.0MB. Free memory was 70.7MB in the beginning and 62.8MB in the end (delta: 7.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-14 12:13:59,781 INFO L158 Benchmark]: TraceAbstraction took 306433.82ms. Allocated memory was 151.0MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 61.9MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2024-06-14 12:13:59,782 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 0.18ms. Allocated memory is still 109.1MB. Free memory is still 80.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.07ms. Allocated memory is still 109.1MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 684.69ms. Allocated memory is still 151.0MB. Free memory was 111.9MB in the beginning and 77.7MB in the end (delta: 34.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.03ms. Allocated memory is still 151.0MB. Free memory was 77.7MB in the beginning and 74.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.60ms. Allocated memory is still 151.0MB. Free memory was 74.2MB in the beginning and 70.7MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 744.98ms. Allocated memory is still 151.0MB. Free memory was 70.7MB in the beginning and 62.8MB in the end (delta: 7.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 306433.82ms. Allocated memory was 151.0MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 61.9MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 49 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 306.3s, OverallIterations: 192, TraceHistogramMax: 1, PathProgramHistogramMax: 34, EmptinessCheckTime: 0.0s, AutomataDifference: 102.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9894 SdHoareTripleChecker+Valid, 45.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8484 mSDsluCounter, 3451 SdHoareTripleChecker+Invalid, 39.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2702 mSDsCounter, 2264 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72643 IncrementalHoareTripleChecker+Invalid, 74907 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2264 mSolverCounterUnsat, 749 mSDtfsCounter, 72643 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2018 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2017 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4155 ImplicationChecksByTransitivity, 55.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2513occurred in iteration=101, InterpolantAutomatonStates: 1871, 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, 1.8s SatisfiabilityAnalysisTime, 200.3s InterpolantComputationTime, 3240 NumberOfCodeBlocks, 3240 NumberOfCodeBlocksAsserted, 192 NumberOfCheckSat, 3048 ConstructedInterpolants, 0 QuantifiedInterpolants, 130799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 192 InterpolantComputations, 192 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 12:13:59,832 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