./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix000.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/mix000.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix000.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:09:14,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:09:14,994 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:09:14,998 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:09:14,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:09:15,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:09:15,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:09:15,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:09:15,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:09:15,026 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:09:15,026 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:09:15,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:09:15,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:09:15,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:09:15,028 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:09:15,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:09:15,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:09:15,029 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:09:15,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:09:15,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:09:15,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:09:15,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:09:15,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:09:15,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:09:15,031 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:09:15,031 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:09:15,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:09:15,032 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:09:15,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:09:15,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:09:15,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:09:15,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:09:15,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:09:15,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:09:15,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:09:15,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:09:15,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:09:15,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:09:15,035 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:09:15,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:09:15,035 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:09:15,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:09:15,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:09:15,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:09:15,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:09:15,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:09:15,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:09:15,263 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:09:15,263 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:09:15,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix000.opt.yml/witness.yml [2024-06-27 18:09:15,409 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:09:15,410 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:09:15,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-27 18:09:16,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:09:16,737 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:09:16,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-27 18:09:16,748 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bd260196/b2f679e87afb45449e03bb49d681b98b/FLAG887fa5a4e [2024-06-27 18:09:16,760 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bd260196/b2f679e87afb45449e03bb49d681b98b [2024-06-27 18:09:16,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:09:16,762 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:09:16,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:09:16,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:09:16,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:09:16,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:09:15" (1/2) ... [2024-06-27 18:09:16,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1dd93d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16, skipping insertion in model container [2024-06-27 18:09:16,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:09:15" (1/2) ... [2024-06-27 18:09:16,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9f7218d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:09:16, skipping insertion in model container [2024-06-27 18:09:16,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:09:16" (2/2) ... [2024-06-27 18:09:16,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1dd93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:16, skipping insertion in model container [2024-06-27 18:09:16,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:09:16" (2/2) ... [2024-06-27 18:09:16,772 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:09:16,826 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:09:16,827 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:09:16,827 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:09:16,827 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:09:16,828 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-27 18:09:16,867 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:09:17,012 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i[987,1000] [2024-06-27 18:09:17,134 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:09:17,141 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:09:17,166 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:09:17,212 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:09:17,244 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:09:17,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17 WrapperNode [2024-06-27 18:09:17,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:09:17,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:09:17,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:09:17,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:09:17,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (1/1) ... [2024-06-27 18:09:17,268 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (1/1) ... [2024-06-27 18:09:17,302 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-06-27 18:09:17,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:09:17,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:09:17,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:09:17,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:09:17,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (1/1) ... [2024-06-27 18:09:17,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (1/1) ... [2024-06-27 18:09:17,315 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (1/1) ... [2024-06-27 18:09:17,327 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]. [2024-06-27 18:09:17,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (1/1) ... [2024-06-27 18:09:17,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (1/1) ... [2024-06-27 18:09:17,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (1/1) ... [2024-06-27 18:09:17,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (1/1) ... [2024-06-27 18:09:17,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (1/1) ... [2024-06-27 18:09:17,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (1/1) ... [2024-06-27 18:09:17,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:09:17,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:09:17,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:09:17,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:09:17,342 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (1/1) ... [2024-06-27 18:09:17,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:09:17,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:09:17,375 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) [2024-06-27 18:09:17,377 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 [2024-06-27 18:09:17,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:09:17,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:09:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:09:17,407 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:09:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:09:17,407 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:09:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:09:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:09:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:09:17,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:09:17,409 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:09:17,500 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:09:17,502 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:09:17,809 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:09:17,810 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:09:17,970 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:09:17,971 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:09:17,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:09:17 BoogieIcfgContainer [2024-06-27 18:09:17,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:09:17,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:09:17,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:09:17,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:09:17,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:09:15" (1/4) ... [2024-06-27 18:09:17,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658bd30b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:09:17, skipping insertion in model container [2024-06-27 18:09:17,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:09:16" (2/4) ... [2024-06-27 18:09:17,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658bd30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:09:17, skipping insertion in model container [2024-06-27 18:09:17,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:09:17" (3/4) ... [2024-06-27 18:09:17,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658bd30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:09:17, skipping insertion in model container [2024-06-27 18:09:17,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:09:17" (4/4) ... [2024-06-27 18:09:17,984 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.opt.i [2024-06-27 18:09:17,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:09:17,998 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:09:17,998 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:09:18,025 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:09:18,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:09:18,067 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 18:09:18,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:09:18,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 18:09:18,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:09:18,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 18:09:18,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:09:18,083 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;@c278a70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:09:18,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:09:18,086 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:09:18,086 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:09:18,087 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:09:18,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:18,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:09:18,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:18,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:18,092 INFO L85 PathProgramCache]: Analyzing trace with hash 345507155, now seen corresponding path program 1 times [2024-06-27 18:09:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:18,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295593564] [2024-06-27 18:09:18,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:18,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:18,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:18,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295593564] [2024-06-27 18:09:18,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295593564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:18,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:18,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:09:18,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568591000] [2024-06-27 18:09:18,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:18,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:09:18,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:18,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:09:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:09:18,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-27 18:09:18,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-06-27 18:09:18,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:18,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-27 18:09:18,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:19,176 INFO L124 PetriNetUnfolderBase]: 384/793 cut-off events. [2024-06-27 18:09:19,177 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 18:09:19,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 793 events. 384/793 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4451 event pairs, 284 based on Foata normal form. 31/742 useless extension candidates. Maximal degree in co-relation 1446. Up to 639 conditions per place. [2024-06-27 18:09:19,185 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 29 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-27 18:09:19,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 165 flow [2024-06-27 18:09:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:09:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:09:19,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-27 18:09:19,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2024-06-27 18:09:19,196 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 79 transitions. [2024-06-27 18:09:19,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 165 flow [2024-06-27 18:09:19,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:09:19,201 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-27 18:09:19,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-27 18:09:19,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:09:19,205 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-27 18:09:19,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-06-27 18:09:19,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:19,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:19,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:09:19,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:19,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:19,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1319925042, now seen corresponding path program 1 times [2024-06-27 18:09:19,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:19,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122094162] [2024-06-27 18:09:19,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:19,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:19,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:19,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122094162] [2024-06-27 18:09:19,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122094162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:19,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:19,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:09:19,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873195105] [2024-06-27 18:09:19,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:19,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:09:19,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:19,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:09:19,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:09:19,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:09:19,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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) [2024-06-27 18:09:19,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:19,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:09:19,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:19,782 INFO L124 PetriNetUnfolderBase]: 539/942 cut-off events. [2024-06-27 18:09:19,783 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-06-27 18:09:19,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 942 events. 539/942 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4943 event pairs, 211 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 2054. Up to 870 conditions per place. [2024-06-27 18:09:19,787 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-27 18:09:19,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 238 flow [2024-06-27 18:09:19,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:09:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:09:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-27 18:09:19,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-06-27 18:09:19,788 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 4 states and 96 transitions. [2024-06-27 18:09:19,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 238 flow [2024-06-27 18:09:19,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:09:19,790 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 134 flow [2024-06-27 18:09:19,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-27 18:09:19,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-27 18:09:19,791 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 134 flow [2024-06-27 18:09:19,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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) [2024-06-27 18:09:19,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:19,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:19,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:09:19,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:19,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2031995632, now seen corresponding path program 1 times [2024-06-27 18:09:19,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:19,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910341473] [2024-06-27 18:09:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:19,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:20,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:20,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910341473] [2024-06-27 18:09:20,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910341473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:20,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:20,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:09:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557452554] [2024-06-27 18:09:20,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:20,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:09:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:20,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:09:20,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:09:20,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:09:20,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:20,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:20,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:09:20,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:20,410 INFO L124 PetriNetUnfolderBase]: 531/902 cut-off events. [2024-06-27 18:09:20,410 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2024-06-27 18:09:20,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 902 events. 531/902 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4513 event pairs, 85 based on Foata normal form. 4/864 useless extension candidates. Maximal degree in co-relation 2183. Up to 824 conditions per place. [2024-06-27 18:09:20,414 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 48 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-27 18:09:20,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 320 flow [2024-06-27 18:09:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:09:20,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:09:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 18:09:20,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-06-27 18:09:20,416 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 134 flow. Second operand 5 states and 120 transitions. [2024-06-27 18:09:20,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 320 flow [2024-06-27 18:09:20,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 306 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:09:20,419 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 168 flow [2024-06-27 18:09:20,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-06-27 18:09:20,419 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-27 18:09:20,419 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 168 flow [2024-06-27 18:09:20,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:20,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:20,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:20,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:09:20,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:20,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:20,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2032576853, now seen corresponding path program 1 times [2024-06-27 18:09:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:20,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951502479] [2024-06-27 18:09:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:20,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:20,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:20,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951502479] [2024-06-27 18:09:20,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951502479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:20,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:20,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:09:20,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695738371] [2024-06-27 18:09:20,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:20,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:09:20,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:20,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:09:20,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:09:20,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-27 18:09:20,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:20,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:20,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-27 18:09:20,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:20,566 INFO L124 PetriNetUnfolderBase]: 206/514 cut-off events. [2024-06-27 18:09:20,566 INFO L125 PetriNetUnfolderBase]: For 252/272 co-relation queries the response was YES. [2024-06-27 18:09:20,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054 conditions, 514 events. 206/514 cut-off events. For 252/272 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3071 event pairs, 102 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 1039. Up to 324 conditions per place. [2024-06-27 18:09:20,569 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 21 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-06-27 18:09:20,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 205 flow [2024-06-27 18:09:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:09:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:09:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-27 18:09:20,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297297297297297 [2024-06-27 18:09:20,571 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 168 flow. Second operand 3 states and 81 transitions. [2024-06-27 18:09:20,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 205 flow [2024-06-27 18:09:20,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 190 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:20,572 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 134 flow [2024-06-27 18:09:20,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-27 18:09:20,573 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-27 18:09:20,573 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 134 flow [2024-06-27 18:09:20,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:20,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:20,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:20,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:09:20,574 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:20,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash 903386637, now seen corresponding path program 1 times [2024-06-27 18:09:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:20,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124271151] [2024-06-27 18:09:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:20,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:21,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:21,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124271151] [2024-06-27 18:09:21,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124271151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:21,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:21,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:09:21,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498227093] [2024-06-27 18:09:21,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:21,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:09:21,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:21,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:09:21,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:09:21,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:09:21,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:21,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:21,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:09:21,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:21,256 INFO L124 PetriNetUnfolderBase]: 414/871 cut-off events. [2024-06-27 18:09:21,257 INFO L125 PetriNetUnfolderBase]: For 491/494 co-relation queries the response was YES. [2024-06-27 18:09:21,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 871 events. 414/871 cut-off events. For 491/494 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4881 event pairs, 202 based on Foata normal form. 4/838 useless extension candidates. Maximal degree in co-relation 1932. Up to 687 conditions per place. [2024-06-27 18:09:21,261 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 38 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-27 18:09:21,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 270 flow [2024-06-27 18:09:21,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:09:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:09:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-06-27 18:09:21,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459459459459459 [2024-06-27 18:09:21,262 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 134 flow. Second operand 5 states and 101 transitions. [2024-06-27 18:09:21,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 270 flow [2024-06-27 18:09:21,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:09:21,264 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 175 flow [2024-06-27 18:09:21,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-27 18:09:21,265 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-27 18:09:21,265 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 175 flow [2024-06-27 18:09:21,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:21,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:21,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:21,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:09:21,266 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:21,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:21,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1911752464, now seen corresponding path program 1 times [2024-06-27 18:09:21,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:21,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040956339] [2024-06-27 18:09:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:21,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:22,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:22,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040956339] [2024-06-27 18:09:22,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040956339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:22,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:22,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:22,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241100531] [2024-06-27 18:09:22,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:22,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:22,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:22,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:22,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:22,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:09:22,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:22,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:22,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:09:22,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:22,462 INFO L124 PetriNetUnfolderBase]: 463/914 cut-off events. [2024-06-27 18:09:22,462 INFO L125 PetriNetUnfolderBase]: For 722/722 co-relation queries the response was YES. [2024-06-27 18:09:22,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2251 conditions, 914 events. 463/914 cut-off events. For 722/722 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4914 event pairs, 149 based on Foata normal form. 4/878 useless extension candidates. Maximal degree in co-relation 2233. Up to 678 conditions per place. [2024-06-27 18:09:22,467 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 54 selfloop transitions, 12 changer transitions 6/82 dead transitions. [2024-06-27 18:09:22,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 82 transitions, 407 flow [2024-06-27 18:09:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:22,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 18:09:22,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-06-27 18:09:22,468 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 175 flow. Second operand 7 states and 154 transitions. [2024-06-27 18:09:22,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 82 transitions, 407 flow [2024-06-27 18:09:22,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 398 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:09:22,471 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 195 flow [2024-06-27 18:09:22,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-27 18:09:22,472 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-27 18:09:22,472 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 195 flow [2024-06-27 18:09:22,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:22,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:22,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:22,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:09:22,473 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:22,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2059783691, now seen corresponding path program 1 times [2024-06-27 18:09:22,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:22,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952168152] [2024-06-27 18:09:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:22,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:23,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952168152] [2024-06-27 18:09:23,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952168152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:23,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:23,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:23,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20427920] [2024-06-27 18:09:23,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:23,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:23,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:23,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:23,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:23,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:09:23,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:23,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:23,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:09:23,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:23,376 INFO L124 PetriNetUnfolderBase]: 356/749 cut-off events. [2024-06-27 18:09:23,377 INFO L125 PetriNetUnfolderBase]: For 856/858 co-relation queries the response was YES. [2024-06-27 18:09:23,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 749 events. 356/749 cut-off events. For 856/858 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4107 event pairs, 117 based on Foata normal form. 4/729 useless extension candidates. Maximal degree in co-relation 1939. Up to 570 conditions per place. [2024-06-27 18:09:23,381 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 43 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2024-06-27 18:09:23,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 347 flow [2024-06-27 18:09:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-27 18:09:23,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-06-27 18:09:23,383 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 195 flow. Second operand 6 states and 118 transitions. [2024-06-27 18:09:23,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 347 flow [2024-06-27 18:09:23,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 321 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:23,387 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 204 flow [2024-06-27 18:09:23,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-27 18:09:23,389 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-06-27 18:09:23,389 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 204 flow [2024-06-27 18:09:23,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:23,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:23,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:23,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:09:23,390 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:23,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:23,390 INFO L85 PathProgramCache]: Analyzing trace with hash 564510764, now seen corresponding path program 1 times [2024-06-27 18:09:23,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:23,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819261013] [2024-06-27 18:09:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:23,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:23,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:23,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819261013] [2024-06-27 18:09:23,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819261013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:23,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:23,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:23,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738584233] [2024-06-27 18:09:23,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:23,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:23,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:23,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:23,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:23,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:23,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:23,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:23,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:23,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:24,172 INFO L124 PetriNetUnfolderBase]: 475/927 cut-off events. [2024-06-27 18:09:24,172 INFO L125 PetriNetUnfolderBase]: For 1153/1153 co-relation queries the response was YES. [2024-06-27 18:09:24,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 927 events. 475/927 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4908 event pairs, 144 based on Foata normal form. 1/895 useless extension candidates. Maximal degree in co-relation 2492. Up to 763 conditions per place. [2024-06-27 18:09:24,177 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 50 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-27 18:09:24,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 387 flow [2024-06-27 18:09:24,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:24,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-27 18:09:24,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49099099099099097 [2024-06-27 18:09:24,179 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 204 flow. Second operand 6 states and 109 transitions. [2024-06-27 18:09:24,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 387 flow [2024-06-27 18:09:24,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 368 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:24,186 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 247 flow [2024-06-27 18:09:24,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=247, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-06-27 18:09:24,188 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-27 18:09:24,189 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 247 flow [2024-06-27 18:09:24,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:24,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:24,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:24,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:09:24,190 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:24,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:24,190 INFO L85 PathProgramCache]: Analyzing trace with hash 571206764, now seen corresponding path program 2 times [2024-06-27 18:09:24,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:24,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249385793] [2024-06-27 18:09:24,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:24,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:24,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:24,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249385793] [2024-06-27 18:09:24,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249385793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:24,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:24,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:09:24,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435634721] [2024-06-27 18:09:24,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:24,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:09:24,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:24,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:09:24,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:09:24,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:24,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:24,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:24,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:24,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:24,947 INFO L124 PetriNetUnfolderBase]: 476/924 cut-off events. [2024-06-27 18:09:24,948 INFO L125 PetriNetUnfolderBase]: For 1537/1543 co-relation queries the response was YES. [2024-06-27 18:09:24,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 924 events. 476/924 cut-off events. For 1537/1543 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4930 event pairs, 140 based on Foata normal form. 5/895 useless extension candidates. Maximal degree in co-relation 2626. Up to 745 conditions per place. [2024-06-27 18:09:24,952 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 48 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-06-27 18:09:24,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 423 flow [2024-06-27 18:09:24,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:09:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:09:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-27 18:09:24,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49099099099099097 [2024-06-27 18:09:24,954 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 247 flow. Second operand 6 states and 109 transitions. [2024-06-27 18:09:24,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 423 flow [2024-06-27 18:09:24,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 404 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:24,956 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 275 flow [2024-06-27 18:09:24,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-06-27 18:09:24,957 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-27 18:09:24,957 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 275 flow [2024-06-27 18:09:24,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:24,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:24,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:24,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:09:24,957 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:24,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:24,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1896009936, now seen corresponding path program 1 times [2024-06-27 18:09:24,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:24,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383198383] [2024-06-27 18:09:24,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:24,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:25,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:25,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383198383] [2024-06-27 18:09:25,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383198383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:25,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:25,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:25,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163372190] [2024-06-27 18:09:25,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:25,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:25,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:25,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:25,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 275 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:25,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:25,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:25,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:25,852 INFO L124 PetriNetUnfolderBase]: 525/1025 cut-off events. [2024-06-27 18:09:25,853 INFO L125 PetriNetUnfolderBase]: For 2113/2113 co-relation queries the response was YES. [2024-06-27 18:09:25,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 1025 events. 525/1025 cut-off events. For 2113/2113 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5547 event pairs, 146 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 3066. Up to 800 conditions per place. [2024-06-27 18:09:25,858 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 62 selfloop transitions, 23 changer transitions 0/93 dead transitions. [2024-06-27 18:09:25,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 93 transitions, 598 flow [2024-06-27 18:09:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:25,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:09:25,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 18:09:25,860 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 275 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:09:25,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 93 transitions, 598 flow [2024-06-27 18:09:25,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 561 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:25,863 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 420 flow [2024-06-27 18:09:25,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=420, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2024-06-27 18:09:25,864 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-27 18:09:25,864 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 420 flow [2024-06-27 18:09:25,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:25,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:25,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:25,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:09:25,864 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:25,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash 319815226, now seen corresponding path program 2 times [2024-06-27 18:09:25,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:25,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333307053] [2024-06-27 18:09:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:25,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333307053] [2024-06-27 18:09:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333307053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:26,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:26,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:26,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682643164] [2024-06-27 18:09:26,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:26,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:26,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:26,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:26,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:26,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 420 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:26,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:26,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:26,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:26,825 INFO L124 PetriNetUnfolderBase]: 547/1067 cut-off events. [2024-06-27 18:09:26,826 INFO L125 PetriNetUnfolderBase]: For 2857/2857 co-relation queries the response was YES. [2024-06-27 18:09:26,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3512 conditions, 1067 events. 547/1067 cut-off events. For 2857/2857 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5833 event pairs, 146 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 3483. Up to 810 conditions per place. [2024-06-27 18:09:26,831 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 64 selfloop transitions, 24 changer transitions 0/96 dead transitions. [2024-06-27 18:09:26,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 96 transitions, 692 flow [2024-06-27 18:09:26,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 18:09:26,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-06-27 18:09:26,833 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 420 flow. Second operand 7 states and 129 transitions. [2024-06-27 18:09:26,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 96 transitions, 692 flow [2024-06-27 18:09:26,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 666 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 18:09:26,836 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 471 flow [2024-06-27 18:09:26,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-06-27 18:09:26,837 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2024-06-27 18:09:26,837 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 471 flow [2024-06-27 18:09:26,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:26,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:26,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:26,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:09:26,838 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:26,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:26,838 INFO L85 PathProgramCache]: Analyzing trace with hash 319966134, now seen corresponding path program 1 times [2024-06-27 18:09:26,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:26,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69304264] [2024-06-27 18:09:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:26,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:27,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:27,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69304264] [2024-06-27 18:09:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69304264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:27,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:27,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423678253] [2024-06-27 18:09:27,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:27,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:27,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:27,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:27,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:27,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 471 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:27,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:27,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:27,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:27,835 INFO L124 PetriNetUnfolderBase]: 558/1080 cut-off events. [2024-06-27 18:09:27,836 INFO L125 PetriNetUnfolderBase]: For 3398/3398 co-relation queries the response was YES. [2024-06-27 18:09:27,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3759 conditions, 1080 events. 558/1080 cut-off events. For 3398/3398 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5889 event pairs, 144 based on Foata normal form. 1/1045 useless extension candidates. Maximal degree in co-relation 3728. Up to 873 conditions per place. [2024-06-27 18:09:27,843 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 74 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2024-06-27 18:09:27,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 739 flow [2024-06-27 18:09:27,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:27,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 18:09:27,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:09:27,845 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 471 flow. Second operand 7 states and 126 transitions. [2024-06-27 18:09:27,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 739 flow [2024-06-27 18:09:27,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 691 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:27,851 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 472 flow [2024-06-27 18:09:27,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=472, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2024-06-27 18:09:27,852 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2024-06-27 18:09:27,852 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 472 flow [2024-06-27 18:09:27,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:27,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:27,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:27,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:09:27,853 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:27,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:27,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1316929662, now seen corresponding path program 3 times [2024-06-27 18:09:27,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:27,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046015572] [2024-06-27 18:09:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:27,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:28,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:28,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046015572] [2024-06-27 18:09:28,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046015572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:28,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:28,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:28,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146131056] [2024-06-27 18:09:28,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:28,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:28,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:28,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:28,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:28,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:28,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 472 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:28,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:28,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:28,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:28,853 INFO L124 PetriNetUnfolderBase]: 580/1129 cut-off events. [2024-06-27 18:09:28,853 INFO L125 PetriNetUnfolderBase]: For 3395/3395 co-relation queries the response was YES. [2024-06-27 18:09:28,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3871 conditions, 1129 events. 580/1129 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6238 event pairs, 148 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 3839. Up to 826 conditions per place. [2024-06-27 18:09:28,861 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 65 selfloop transitions, 26 changer transitions 0/99 dead transitions. [2024-06-27 18:09:28,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 99 transitions, 746 flow [2024-06-27 18:09:28,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-27 18:09:28,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-27 18:09:28,862 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 472 flow. Second operand 7 states and 130 transitions. [2024-06-27 18:09:28,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 99 transitions, 746 flow [2024-06-27 18:09:28,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 713 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:28,868 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 516 flow [2024-06-27 18:09:28,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=516, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-06-27 18:09:28,869 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-27 18:09:28,869 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 516 flow [2024-06-27 18:09:28,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:28,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:28,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:28,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:09:28,870 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:28,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:28,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1191991112, now seen corresponding path program 4 times [2024-06-27 18:09:28,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:28,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182702503] [2024-06-27 18:09:28,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:28,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:29,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:29,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182702503] [2024-06-27 18:09:29,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182702503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:29,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:29,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:29,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143380388] [2024-06-27 18:09:29,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:29,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:29,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:29,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:29,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:29,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 516 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:29,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:29,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:29,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:29,799 INFO L124 PetriNetUnfolderBase]: 592/1166 cut-off events. [2024-06-27 18:09:29,800 INFO L125 PetriNetUnfolderBase]: For 4245/4251 co-relation queries the response was YES. [2024-06-27 18:09:29,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 1166 events. 592/1166 cut-off events. For 4245/4251 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6483 event pairs, 143 based on Foata normal form. 3/1121 useless extension candidates. Maximal degree in co-relation 4115. Up to 803 conditions per place. [2024-06-27 18:09:29,808 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 63 selfloop transitions, 30 changer transitions 0/101 dead transitions. [2024-06-27 18:09:29,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 802 flow [2024-06-27 18:09:29,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-27 18:09:29,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-27 18:09:29,810 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 516 flow. Second operand 7 states and 130 transitions. [2024-06-27 18:09:29,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 802 flow [2024-06-27 18:09:29,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 101 transitions, 741 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:29,816 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 544 flow [2024-06-27 18:09:29,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-06-27 18:09:29,816 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-27 18:09:29,816 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 544 flow [2024-06-27 18:09:29,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:29,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:29,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:29,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:09:29,817 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:29,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash 527542134, now seen corresponding path program 2 times [2024-06-27 18:09:29,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:29,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759851849] [2024-06-27 18:09:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:29,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:30,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:30,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759851849] [2024-06-27 18:09:30,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759851849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:30,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:30,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:30,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253559818] [2024-06-27 18:09:30,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:30,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:30,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:30,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:30,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:30,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:30,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 544 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:30,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:30,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:30,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:30,887 INFO L124 PetriNetUnfolderBase]: 603/1198 cut-off events. [2024-06-27 18:09:30,887 INFO L125 PetriNetUnfolderBase]: For 4693/4699 co-relation queries the response was YES. [2024-06-27 18:09:30,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4324 conditions, 1198 events. 603/1198 cut-off events. For 4693/4699 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6724 event pairs, 140 based on Foata normal form. 5/1152 useless extension candidates. Maximal degree in co-relation 4290. Up to 923 conditions per place. [2024-06-27 18:09:30,895 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 77 selfloop transitions, 18 changer transitions 0/103 dead transitions. [2024-06-27 18:09:30,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 103 transitions, 832 flow [2024-06-27 18:09:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 18:09:30,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:09:30,896 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 544 flow. Second operand 7 states and 126 transitions. [2024-06-27 18:09:30,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 103 transitions, 832 flow [2024-06-27 18:09:30,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 103 transitions, 759 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:30,903 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 530 flow [2024-06-27 18:09:30,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2024-06-27 18:09:30,904 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-27 18:09:30,904 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 530 flow [2024-06-27 18:09:30,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:30,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:30,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:30,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:09:30,905 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:30,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:30,905 INFO L85 PathProgramCache]: Analyzing trace with hash 527838804, now seen corresponding path program 3 times [2024-06-27 18:09:30,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:30,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291185252] [2024-06-27 18:09:30,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:30,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:31,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:31,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291185252] [2024-06-27 18:09:31,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291185252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:31,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:31,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:09:31,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697874169] [2024-06-27 18:09:31,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:31,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:09:31,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:31,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:09:31,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:09:31,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:31,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 530 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:31,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:31,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:31,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:31,948 INFO L124 PetriNetUnfolderBase]: 604/1198 cut-off events. [2024-06-27 18:09:31,948 INFO L125 PetriNetUnfolderBase]: For 4817/4823 co-relation queries the response was YES. [2024-06-27 18:09:31,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 1198 events. 604/1198 cut-off events. For 4817/4823 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6749 event pairs, 140 based on Foata normal form. 5/1154 useless extension candidates. Maximal degree in co-relation 4262. Up to 892 conditions per place. [2024-06-27 18:09:31,959 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 76 selfloop transitions, 23 changer transitions 0/107 dead transitions. [2024-06-27 18:09:31,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 107 transitions, 840 flow [2024-06-27 18:09:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:09:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:09:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 18:09:31,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-27 18:09:31,961 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 530 flow. Second operand 7 states and 127 transitions. [2024-06-27 18:09:31,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 107 transitions, 840 flow [2024-06-27 18:09:31,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 107 transitions, 797 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:31,968 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 581 flow [2024-06-27 18:09:31,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=581, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2024-06-27 18:09:31,969 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-06-27 18:09:31,969 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 581 flow [2024-06-27 18:09:31,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:31,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:31,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:31,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:09:31,970 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:31,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:31,970 INFO L85 PathProgramCache]: Analyzing trace with hash 608356995, now seen corresponding path program 1 times [2024-06-27 18:09:31,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:31,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83017137] [2024-06-27 18:09:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:31,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:32,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:32,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:32,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83017137] [2024-06-27 18:09:32,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83017137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:32,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:32,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:32,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833198749] [2024-06-27 18:09:32,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:32,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:32,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:32,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:32,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:32,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:32,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 581 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:32,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:32,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:32,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:33,093 INFO L124 PetriNetUnfolderBase]: 605/1166 cut-off events. [2024-06-27 18:09:33,093 INFO L125 PetriNetUnfolderBase]: For 5421/5421 co-relation queries the response was YES. [2024-06-27 18:09:33,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4424 conditions, 1166 events. 605/1166 cut-off events. For 5421/5421 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6543 event pairs, 154 based on Foata normal form. 1/1130 useless extension candidates. Maximal degree in co-relation 4387. Up to 913 conditions per place. [2024-06-27 18:09:33,099 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 85 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2024-06-27 18:09:33,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 118 transitions, 937 flow [2024-06-27 18:09:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:09:33,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 18:09:33,100 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 581 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:09:33,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 118 transitions, 937 flow [2024-06-27 18:09:33,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 904 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:09:33,108 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 661 flow [2024-06-27 18:09:33,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=661, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2024-06-27 18:09:33,109 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-27 18:09:33,109 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 661 flow [2024-06-27 18:09:33,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:33,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:33,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:33,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:09:33,109 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:33,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2129522264, now seen corresponding path program 1 times [2024-06-27 18:09:33,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:33,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901154876] [2024-06-27 18:09:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:33,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:33,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901154876] [2024-06-27 18:09:33,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901154876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:33,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:33,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:33,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181833019] [2024-06-27 18:09:33,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:33,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:33,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:33,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:33,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:33,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 661 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:33,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:33,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:33,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:34,169 INFO L124 PetriNetUnfolderBase]: 627/1202 cut-off events. [2024-06-27 18:09:34,169 INFO L125 PetriNetUnfolderBase]: For 6436/6436 co-relation queries the response was YES. [2024-06-27 18:09:34,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 1202 events. 627/1202 cut-off events. For 6436/6436 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6785 event pairs, 152 based on Foata normal form. 2/1166 useless extension candidates. Maximal degree in co-relation 4736. Up to 901 conditions per place. [2024-06-27 18:09:34,178 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 86 selfloop transitions, 27 changer transitions 0/121 dead transitions. [2024-06-27 18:09:34,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 121 transitions, 1013 flow [2024-06-27 18:09:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:09:34,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 18:09:34,183 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 661 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:09:34,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 121 transitions, 1013 flow [2024-06-27 18:09:34,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 121 transitions, 946 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:34,193 INFO L231 Difference]: Finished difference. Result has 94 places, 92 transitions, 685 flow [2024-06-27 18:09:34,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2024-06-27 18:09:34,194 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-27 18:09:34,194 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 685 flow [2024-06-27 18:09:34,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:34,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:34,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:34,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:09:34,194 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:34,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:34,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1329016948, now seen corresponding path program 2 times [2024-06-27 18:09:34,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:34,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228185087] [2024-06-27 18:09:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:34,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:34,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:34,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228185087] [2024-06-27 18:09:34,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228185087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:34,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:34,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:34,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263446637] [2024-06-27 18:09:34,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:34,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:34,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:34,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:34,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:34,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:34,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 92 transitions, 685 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:34,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:34,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:34,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:35,401 INFO L124 PetriNetUnfolderBase]: 664/1264 cut-off events. [2024-06-27 18:09:35,402 INFO L125 PetriNetUnfolderBase]: For 7640/7640 co-relation queries the response was YES. [2024-06-27 18:09:35,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5267 conditions, 1264 events. 664/1264 cut-off events. For 7640/7640 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7163 event pairs, 151 based on Foata normal form. 1/1224 useless extension candidates. Maximal degree in co-relation 5226. Up to 877 conditions per place. [2024-06-27 18:09:35,409 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 82 selfloop transitions, 35 changer transitions 0/125 dead transitions. [2024-06-27 18:09:35,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 125 transitions, 1097 flow [2024-06-27 18:09:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:09:35,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 18:09:35,411 INFO L175 Difference]: Start difference. First operand has 94 places, 92 transitions, 685 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:09:35,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 125 transitions, 1097 flow [2024-06-27 18:09:35,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 125 transitions, 1030 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:35,421 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 759 flow [2024-06-27 18:09:35,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=759, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2024-06-27 18:09:35,422 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-27 18:09:35,422 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 759 flow [2024-06-27 18:09:35,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:35,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:35,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:35,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:09:35,422 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:35,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:35,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2124844085, now seen corresponding path program 1 times [2024-06-27 18:09:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:35,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954716169] [2024-06-27 18:09:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:35,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:36,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:36,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954716169] [2024-06-27 18:09:36,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954716169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:36,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:36,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:36,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452109091] [2024-06-27 18:09:36,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:36,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:36,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:36,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:36,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:36,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:36,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 759 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:36,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:36,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:36,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:36,463 INFO L124 PetriNetUnfolderBase]: 686/1302 cut-off events. [2024-06-27 18:09:36,464 INFO L125 PetriNetUnfolderBase]: For 9303/9303 co-relation queries the response was YES. [2024-06-27 18:09:36,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5742 conditions, 1302 events. 686/1302 cut-off events. For 9303/9303 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7372 event pairs, 153 based on Foata normal form. 2/1264 useless extension candidates. Maximal degree in co-relation 5699. Up to 1050 conditions per place. [2024-06-27 18:09:36,472 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 103 selfloop transitions, 17 changer transitions 0/128 dead transitions. [2024-06-27 18:09:36,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 128 transitions, 1123 flow [2024-06-27 18:09:36,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:36,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 18:09:36,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:09:36,473 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 759 flow. Second operand 8 states and 144 transitions. [2024-06-27 18:09:36,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 128 transitions, 1123 flow [2024-06-27 18:09:36,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 128 transitions, 1077 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:36,485 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 774 flow [2024-06-27 18:09:36,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=774, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2024-06-27 18:09:36,485 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-27 18:09:36,485 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 774 flow [2024-06-27 18:09:36,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:36,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:36,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:36,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:09:36,486 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:36,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1329009508, now seen corresponding path program 3 times [2024-06-27 18:09:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:36,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112390427] [2024-06-27 18:09:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:36,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:37,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112390427] [2024-06-27 18:09:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112390427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:37,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:37,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070040941] [2024-06-27 18:09:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:37,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:37,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:37,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:37,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 774 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:37,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:37,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:37,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:37,519 INFO L124 PetriNetUnfolderBase]: 682/1287 cut-off events. [2024-06-27 18:09:37,519 INFO L125 PetriNetUnfolderBase]: For 9399/9399 co-relation queries the response was YES. [2024-06-27 18:09:37,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5787 conditions, 1287 events. 682/1287 cut-off events. For 9399/9399 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7282 event pairs, 154 based on Foata normal form. 2/1251 useless extension candidates. Maximal degree in co-relation 5742. Up to 963 conditions per place. [2024-06-27 18:09:37,526 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 90 selfloop transitions, 29 changer transitions 0/127 dead transitions. [2024-06-27 18:09:37,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 127 transitions, 1124 flow [2024-06-27 18:09:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 18:09:37,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:09:37,527 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 774 flow. Second operand 8 states and 148 transitions. [2024-06-27 18:09:37,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 127 transitions, 1124 flow [2024-06-27 18:09:37,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 127 transitions, 1067 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:37,540 INFO L231 Difference]: Finished difference. Result has 103 places, 99 transitions, 781 flow [2024-06-27 18:09:37,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=781, PETRI_PLACES=103, PETRI_TRANSITIONS=99} [2024-06-27 18:09:37,541 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-27 18:09:37,541 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 99 transitions, 781 flow [2024-06-27 18:09:37,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:37,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:37,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:37,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:09:37,542 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:37,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:37,542 INFO L85 PathProgramCache]: Analyzing trace with hash -826061365, now seen corresponding path program 2 times [2024-06-27 18:09:37,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:37,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042292461] [2024-06-27 18:09:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:37,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:38,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:38,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042292461] [2024-06-27 18:09:38,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042292461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:38,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:38,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:38,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687410076] [2024-06-27 18:09:38,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:38,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:38,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:38,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:38,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:38,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:38,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 99 transitions, 781 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:38,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:38,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:38,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:38,622 INFO L124 PetriNetUnfolderBase]: 704/1331 cut-off events. [2024-06-27 18:09:38,623 INFO L125 PetriNetUnfolderBase]: For 10107/10113 co-relation queries the response was YES. [2024-06-27 18:09:38,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 1331 events. 704/1331 cut-off events. For 10107/10113 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7569 event pairs, 143 based on Foata normal form. 6/1291 useless extension candidates. Maximal degree in co-relation 5932. Up to 1058 conditions per place. [2024-06-27 18:09:38,630 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 102 selfloop transitions, 20 changer transitions 0/130 dead transitions. [2024-06-27 18:09:38,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 130 transitions, 1159 flow [2024-06-27 18:09:38,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 18:09:38,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:09:38,632 INFO L175 Difference]: Start difference. First operand has 103 places, 99 transitions, 781 flow. Second operand 8 states and 144 transitions. [2024-06-27 18:09:38,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 130 transitions, 1159 flow [2024-06-27 18:09:38,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 130 transitions, 1083 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:38,646 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 776 flow [2024-06-27 18:09:38,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=776, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2024-06-27 18:09:38,646 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 63 predicate places. [2024-06-27 18:09:38,647 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 776 flow [2024-06-27 18:09:38,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:38,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:38,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:38,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:09:38,647 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:38,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:38,648 INFO L85 PathProgramCache]: Analyzing trace with hash -826061644, now seen corresponding path program 4 times [2024-06-27 18:09:38,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:38,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122023188] [2024-06-27 18:09:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:38,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:39,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:39,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122023188] [2024-06-27 18:09:39,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122023188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:39,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:39,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:39,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772308918] [2024-06-27 18:09:39,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:39,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:39,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:39,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:39,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:39,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:39,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 776 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:39,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:39,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:39,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:39,756 INFO L124 PetriNetUnfolderBase]: 741/1378 cut-off events. [2024-06-27 18:09:39,756 INFO L125 PetriNetUnfolderBase]: For 11274/11280 co-relation queries the response was YES. [2024-06-27 18:09:39,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6325 conditions, 1378 events. 741/1378 cut-off events. For 11274/11280 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7833 event pairs, 143 based on Foata normal form. 2/1335 useless extension candidates. Maximal degree in co-relation 6278. Up to 988 conditions per place. [2024-06-27 18:09:39,765 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 91 selfloop transitions, 36 changer transitions 0/135 dead transitions. [2024-06-27 18:09:39,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 135 transitions, 1250 flow [2024-06-27 18:09:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 18:09:39,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 18:09:39,766 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 776 flow. Second operand 8 states and 151 transitions. [2024-06-27 18:09:39,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 135 transitions, 1250 flow [2024-06-27 18:09:39,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 135 transitions, 1195 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:39,780 INFO L231 Difference]: Finished difference. Result has 107 places, 106 transitions, 873 flow [2024-06-27 18:09:39,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=873, PETRI_PLACES=107, PETRI_TRANSITIONS=106} [2024-06-27 18:09:39,781 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-06-27 18:09:39,781 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 106 transitions, 873 flow [2024-06-27 18:09:39,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:39,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:39,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:39,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:09:39,782 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:39,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:39,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1951468184, now seen corresponding path program 5 times [2024-06-27 18:09:39,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:39,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373092261] [2024-06-27 18:09:39,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:39,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:40,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:40,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:40,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373092261] [2024-06-27 18:09:40,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373092261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:40,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:40,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:40,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187730878] [2024-06-27 18:09:40,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:40,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:40,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:40,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:40,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:40,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:40,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 106 transitions, 873 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:40,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:40,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:40,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:40,912 INFO L124 PetriNetUnfolderBase]: 737/1378 cut-off events. [2024-06-27 18:09:40,912 INFO L125 PetriNetUnfolderBase]: For 12585/12591 co-relation queries the response was YES. [2024-06-27 18:09:40,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6535 conditions, 1378 events. 737/1378 cut-off events. For 12585/12591 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7861 event pairs, 145 based on Foata normal form. 3/1334 useless extension candidates. Maximal degree in co-relation 6486. Up to 1006 conditions per place. [2024-06-27 18:09:40,933 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 93 selfloop transitions, 33 changer transitions 0/134 dead transitions. [2024-06-27 18:09:40,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 134 transitions, 1251 flow [2024-06-27 18:09:40,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 18:09:40,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:09:40,935 INFO L175 Difference]: Start difference. First operand has 107 places, 106 transitions, 873 flow. Second operand 8 states and 148 transitions. [2024-06-27 18:09:40,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 134 transitions, 1251 flow [2024-06-27 18:09:40,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 134 transitions, 1168 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:40,955 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 862 flow [2024-06-27 18:09:40,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=862, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2024-06-27 18:09:40,956 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2024-06-27 18:09:40,956 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 862 flow [2024-06-27 18:09:40,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:40,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:40,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:40,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:09:40,957 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:40,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash -816864595, now seen corresponding path program 3 times [2024-06-27 18:09:40,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:40,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187176459] [2024-06-27 18:09:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:40,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:41,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:41,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187176459] [2024-06-27 18:09:41,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187176459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:41,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:41,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:41,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045737338] [2024-06-27 18:09:41,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:41,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:41,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:41,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:41,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:41,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:41,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 862 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:41,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:41,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:41,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:42,051 INFO L124 PetriNetUnfolderBase]: 765/1488 cut-off events. [2024-06-27 18:09:42,052 INFO L125 PetriNetUnfolderBase]: For 13436/13442 co-relation queries the response was YES. [2024-06-27 18:09:42,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 1488 events. 765/1488 cut-off events. For 13436/13442 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8722 event pairs, 144 based on Foata normal form. 6/1432 useless extension candidates. Maximal degree in co-relation 6841. Up to 1023 conditions per place. [2024-06-27 18:09:42,062 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 104 selfloop transitions, 30 changer transitions 0/142 dead transitions. [2024-06-27 18:09:42,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 142 transitions, 1344 flow [2024-06-27 18:09:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:42,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:42,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 18:09:42,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 18:09:42,077 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 862 flow. Second operand 8 states and 150 transitions. [2024-06-27 18:09:42,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 142 transitions, 1344 flow [2024-06-27 18:09:42,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 142 transitions, 1271 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:42,109 INFO L231 Difference]: Finished difference. Result has 112 places, 110 transitions, 910 flow [2024-06-27 18:09:42,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=910, PETRI_PLACES=112, PETRI_TRANSITIONS=110} [2024-06-27 18:09:42,110 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-27 18:09:42,111 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 110 transitions, 910 flow [2024-06-27 18:09:42,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:42,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:42,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:42,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:09:42,111 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:42,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:42,112 INFO L85 PathProgramCache]: Analyzing trace with hash -816864874, now seen corresponding path program 6 times [2024-06-27 18:09:42,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:42,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694516890] [2024-06-27 18:09:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:42,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:42,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:42,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694516890] [2024-06-27 18:09:42,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694516890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:42,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:42,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:42,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664488318] [2024-06-27 18:09:42,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:42,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:42,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:42,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:42,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:42,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:42,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 910 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:42,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:42,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:42,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:43,258 INFO L124 PetriNetUnfolderBase]: 766/1456 cut-off events. [2024-06-27 18:09:43,259 INFO L125 PetriNetUnfolderBase]: For 13780/13786 co-relation queries the response was YES. [2024-06-27 18:09:43,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6929 conditions, 1456 events. 766/1456 cut-off events. For 13780/13786 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8310 event pairs, 153 based on Foata normal form. 2/1404 useless extension candidates. Maximal degree in co-relation 6877. Up to 919 conditions per place. [2024-06-27 18:09:43,267 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 82 selfloop transitions, 49 changer transitions 0/139 dead transitions. [2024-06-27 18:09:43,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 139 transitions, 1312 flow [2024-06-27 18:09:43,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:43,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:09:43,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 18:09:43,278 INFO L175 Difference]: Start difference. First operand has 112 places, 110 transitions, 910 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:09:43,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 139 transitions, 1312 flow [2024-06-27 18:09:43,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 139 transitions, 1259 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 18:09:43,298 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 992 flow [2024-06-27 18:09:43,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=992, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2024-06-27 18:09:43,299 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-06-27 18:09:43,299 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 992 flow [2024-06-27 18:09:43,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:43,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:43,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:43,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:09:43,300 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:43,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:43,300 INFO L85 PathProgramCache]: Analyzing trace with hash -816855295, now seen corresponding path program 4 times [2024-06-27 18:09:43,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:43,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371755391] [2024-06-27 18:09:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:43,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:44,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:44,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371755391] [2024-06-27 18:09:44,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371755391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:44,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:44,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:09:44,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096068098] [2024-06-27 18:09:44,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:44,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:09:44,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:44,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:09:44,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:09:44,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:44,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 992 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:44,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:44,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:44,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:44,466 INFO L124 PetriNetUnfolderBase]: 762/1500 cut-off events. [2024-06-27 18:09:44,467 INFO L125 PetriNetUnfolderBase]: For 14303/14303 co-relation queries the response was YES. [2024-06-27 18:09:44,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7158 conditions, 1500 events. 762/1500 cut-off events. For 14303/14303 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8840 event pairs, 163 based on Foata normal form. 2/1438 useless extension candidates. Maximal degree in co-relation 7104. Up to 1162 conditions per place. [2024-06-27 18:09:44,476 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 119 selfloop transitions, 13 changer transitions 0/140 dead transitions. [2024-06-27 18:09:44,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 140 transitions, 1358 flow [2024-06-27 18:09:44,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:09:44,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:09:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 18:09:44,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-27 18:09:44,477 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 992 flow. Second operand 8 states and 143 transitions. [2024-06-27 18:09:44,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 140 transitions, 1358 flow [2024-06-27 18:09:44,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 140 transitions, 1219 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:44,499 INFO L231 Difference]: Finished difference. Result has 118 places, 112 transitions, 884 flow [2024-06-27 18:09:44,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=884, PETRI_PLACES=118, PETRI_TRANSITIONS=112} [2024-06-27 18:09:44,500 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-06-27 18:09:44,500 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 112 transitions, 884 flow [2024-06-27 18:09:44,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:44,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:44,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:44,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:09:44,501 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:44,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:44,501 INFO L85 PathProgramCache]: Analyzing trace with hash -816526261, now seen corresponding path program 1 times [2024-06-27 18:09:44,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:44,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745171174] [2024-06-27 18:09:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:46,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:46,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745171174] [2024-06-27 18:09:46,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745171174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:46,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:46,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:46,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590334027] [2024-06-27 18:09:46,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:46,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:46,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:46,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:46,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:46,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:09:46,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 112 transitions, 884 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:46,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:46,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:09:46,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:46,461 INFO L124 PetriNetUnfolderBase]: 689/1382 cut-off events. [2024-06-27 18:09:46,461 INFO L125 PetriNetUnfolderBase]: For 13110/13130 co-relation queries the response was YES. [2024-06-27 18:09:46,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6257 conditions, 1382 events. 689/1382 cut-off events. For 13110/13130 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8309 event pairs, 154 based on Foata normal form. 22/1350 useless extension candidates. Maximal degree in co-relation 6202. Up to 1024 conditions per place. [2024-06-27 18:09:46,470 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 112 selfloop transitions, 14 changer transitions 0/147 dead transitions. [2024-06-27 18:09:46,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 147 transitions, 1276 flow [2024-06-27 18:09:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:46,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:09:46,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 18:09:46,472 INFO L175 Difference]: Start difference. First operand has 118 places, 112 transitions, 884 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:09:46,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 147 transitions, 1276 flow [2024-06-27 18:09:46,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 147 transitions, 1219 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:09:46,492 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 886 flow [2024-06-27 18:09:46,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=886, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2024-06-27 18:09:46,492 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-06-27 18:09:46,492 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 886 flow [2024-06-27 18:09:46,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:46,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:46,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:46,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:09:46,493 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:46,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1898915465, now seen corresponding path program 1 times [2024-06-27 18:09:46,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:46,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932659757] [2024-06-27 18:09:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:46,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:47,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:47,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932659757] [2024-06-27 18:09:47,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932659757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:47,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:47,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:47,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323543265] [2024-06-27 18:09:47,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:47,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:47,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:47,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:47,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:47,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:47,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 886 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:47,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:47,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:47,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:47,994 INFO L124 PetriNetUnfolderBase]: 774/1486 cut-off events. [2024-06-27 18:09:47,995 INFO L125 PetriNetUnfolderBase]: For 13904/13904 co-relation queries the response was YES. [2024-06-27 18:09:48,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6908 conditions, 1486 events. 774/1486 cut-off events. For 13904/13904 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8827 event pairs, 181 based on Foata normal form. 1/1437 useless extension candidates. Maximal degree in co-relation 6852. Up to 1166 conditions per place. [2024-06-27 18:09:48,004 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 116 selfloop transitions, 27 changer transitions 0/151 dead transitions. [2024-06-27 18:09:48,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 151 transitions, 1322 flow [2024-06-27 18:09:48,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:09:48,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 18:09:48,006 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 886 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:09:48,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 151 transitions, 1322 flow [2024-06-27 18:09:48,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 151 transitions, 1292 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:48,031 INFO L231 Difference]: Finished difference. Result has 123 places, 117 transitions, 953 flow [2024-06-27 18:09:48,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=953, PETRI_PLACES=123, PETRI_TRANSITIONS=117} [2024-06-27 18:09:48,032 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-27 18:09:48,032 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 117 transitions, 953 flow [2024-06-27 18:09:48,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:48,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:48,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:48,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:09:48,032 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:48,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1885024143, now seen corresponding path program 2 times [2024-06-27 18:09:48,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:48,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947123589] [2024-06-27 18:09:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:48,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:49,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:49,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947123589] [2024-06-27 18:09:49,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947123589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:49,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:49,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:49,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445731264] [2024-06-27 18:09:49,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:49,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:49,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:49,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:49,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:49,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:49,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 117 transitions, 953 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:49,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:49,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:49,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:49,655 INFO L124 PetriNetUnfolderBase]: 785/1503 cut-off events. [2024-06-27 18:09:49,655 INFO L125 PetriNetUnfolderBase]: For 15311/15311 co-relation queries the response was YES. [2024-06-27 18:09:49,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7155 conditions, 1503 events. 785/1503 cut-off events. For 15311/15311 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8951 event pairs, 179 based on Foata normal form. 1/1455 useless extension candidates. Maximal degree in co-relation 7098. Up to 1137 conditions per place. [2024-06-27 18:09:49,665 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 116 selfloop transitions, 29 changer transitions 0/153 dead transitions. [2024-06-27 18:09:49,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 153 transitions, 1415 flow [2024-06-27 18:09:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:09:49,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 18:09:49,667 INFO L175 Difference]: Start difference. First operand has 123 places, 117 transitions, 953 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:09:49,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 153 transitions, 1415 flow [2024-06-27 18:09:49,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 153 transitions, 1334 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:49,691 INFO L231 Difference]: Finished difference. Result has 125 places, 119 transitions, 977 flow [2024-06-27 18:09:49,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=977, PETRI_PLACES=125, PETRI_TRANSITIONS=119} [2024-06-27 18:09:49,691 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2024-06-27 18:09:49,691 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 119 transitions, 977 flow [2024-06-27 18:09:49,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:49,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:49,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:49,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:09:49,692 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:49,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:49,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1895160807, now seen corresponding path program 1 times [2024-06-27 18:09:49,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:49,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737681835] [2024-06-27 18:09:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:49,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:50,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:50,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737681835] [2024-06-27 18:09:50,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737681835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:50,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:50,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:50,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996039207] [2024-06-27 18:09:50,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:50,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:50,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:50,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:50,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:50,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:50,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 119 transitions, 977 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:50,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:50,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:50,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:50,888 INFO L124 PetriNetUnfolderBase]: 829/1563 cut-off events. [2024-06-27 18:09:50,888 INFO L125 PetriNetUnfolderBase]: For 18425/18425 co-relation queries the response was YES. [2024-06-27 18:09:50,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7619 conditions, 1563 events. 829/1563 cut-off events. For 18425/18425 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9250 event pairs, 176 based on Foata normal form. 4/1520 useless extension candidates. Maximal degree in co-relation 7561. Up to 1172 conditions per place. [2024-06-27 18:09:50,899 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 119 selfloop transitions, 30 changer transitions 0/157 dead transitions. [2024-06-27 18:09:50,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 157 transitions, 1461 flow [2024-06-27 18:09:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:50,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:09:50,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 18:09:50,901 INFO L175 Difference]: Start difference. First operand has 125 places, 119 transitions, 977 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:09:50,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 157 transitions, 1461 flow [2024-06-27 18:09:50,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 157 transitions, 1372 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:50,929 INFO L231 Difference]: Finished difference. Result has 127 places, 122 transitions, 1008 flow [2024-06-27 18:09:50,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1008, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2024-06-27 18:09:50,930 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-06-27 18:09:50,930 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 1008 flow [2024-06-27 18:09:50,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:50,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:50,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:50,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:09:50,931 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:50,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:50,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1566814167, now seen corresponding path program 2 times [2024-06-27 18:09:50,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:50,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094881247] [2024-06-27 18:09:50,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:50,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:51,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:51,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094881247] [2024-06-27 18:09:51,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094881247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:51,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:51,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:51,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930272509] [2024-06-27 18:09:51,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:51,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:51,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:51,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:51,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:51,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:51,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 122 transitions, 1008 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:51,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:51,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:51,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:52,301 INFO L124 PetriNetUnfolderBase]: 851/1608 cut-off events. [2024-06-27 18:09:52,301 INFO L125 PetriNetUnfolderBase]: For 19289/19289 co-relation queries the response was YES. [2024-06-27 18:09:52,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7947 conditions, 1608 events. 851/1608 cut-off events. For 19289/19289 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9579 event pairs, 181 based on Foata normal form. 2/1559 useless extension candidates. Maximal degree in co-relation 7888. Up to 1205 conditions per place. [2024-06-27 18:09:52,312 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 118 selfloop transitions, 32 changer transitions 0/158 dead transitions. [2024-06-27 18:09:52,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 158 transitions, 1502 flow [2024-06-27 18:09:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:09:52,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 18:09:52,314 INFO L175 Difference]: Start difference. First operand has 127 places, 122 transitions, 1008 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:09:52,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 158 transitions, 1502 flow [2024-06-27 18:09:52,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 158 transitions, 1404 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:52,343 INFO L231 Difference]: Finished difference. Result has 129 places, 125 transitions, 1032 flow [2024-06-27 18:09:52,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1032, PETRI_PLACES=129, PETRI_TRANSITIONS=125} [2024-06-27 18:09:52,344 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-27 18:09:52,344 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 125 transitions, 1032 flow [2024-06-27 18:09:52,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:52,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:52,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:52,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:09:52,344 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:52,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:52,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1750376795, now seen corresponding path program 3 times [2024-06-27 18:09:52,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:52,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696057964] [2024-06-27 18:09:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:52,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:53,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:53,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696057964] [2024-06-27 18:09:53,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696057964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:53,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:53,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:53,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352977836] [2024-06-27 18:09:53,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:53,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:53,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:53,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:53,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 125 transitions, 1032 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:53,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:53,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:53,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:53,947 INFO L124 PetriNetUnfolderBase]: 862/1639 cut-off events. [2024-06-27 18:09:53,947 INFO L125 PetriNetUnfolderBase]: For 19964/19964 co-relation queries the response was YES. [2024-06-27 18:09:53,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8101 conditions, 1639 events. 862/1639 cut-off events. For 19964/19964 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9881 event pairs, 186 based on Foata normal form. 1/1587 useless extension candidates. Maximal degree in co-relation 8041. Up to 1233 conditions per place. [2024-06-27 18:09:53,959 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 121 selfloop transitions, 31 changer transitions 0/160 dead transitions. [2024-06-27 18:09:53,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 160 transitions, 1534 flow [2024-06-27 18:09:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:53,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:53,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:09:53,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 18:09:53,961 INFO L175 Difference]: Start difference. First operand has 129 places, 125 transitions, 1032 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:09:53,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 160 transitions, 1534 flow [2024-06-27 18:09:53,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 160 transitions, 1434 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:53,995 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 1049 flow [2024-06-27 18:09:53,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1049, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2024-06-27 18:09:53,995 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-06-27 18:09:53,995 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 1049 flow [2024-06-27 18:09:53,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:53,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:53,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:53,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:09:53,996 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:53,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:53,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1750137537, now seen corresponding path program 3 times [2024-06-27 18:09:53,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:53,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931928594] [2024-06-27 18:09:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:53,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:54,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:54,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931928594] [2024-06-27 18:09:54,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931928594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:54,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:54,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:54,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085618180] [2024-06-27 18:09:54,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:54,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:54,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:54,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:54,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:54,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:54,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 1049 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:54,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:54,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:54,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:55,318 INFO L124 PetriNetUnfolderBase]: 886/1643 cut-off events. [2024-06-27 18:09:55,319 INFO L125 PetriNetUnfolderBase]: For 21681/21681 co-relation queries the response was YES. [2024-06-27 18:09:55,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8300 conditions, 1643 events. 886/1643 cut-off events. For 21681/21681 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9720 event pairs, 168 based on Foata normal form. 1/1599 useless extension candidates. Maximal degree in co-relation 8239. Up to 1147 conditions per place. [2024-06-27 18:09:55,330 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 115 selfloop transitions, 44 changer transitions 0/167 dead transitions. [2024-06-27 18:09:55,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 167 transitions, 1628 flow [2024-06-27 18:09:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:09:55,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 18:09:55,332 INFO L175 Difference]: Start difference. First operand has 131 places, 127 transitions, 1049 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:09:55,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 167 transitions, 1628 flow [2024-06-27 18:09:55,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 167 transitions, 1527 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:55,363 INFO L231 Difference]: Finished difference. Result has 134 places, 134 transitions, 1130 flow [2024-06-27 18:09:55,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=134, PETRI_TRANSITIONS=134} [2024-06-27 18:09:55,363 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-06-27 18:09:55,363 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 134 transitions, 1130 flow [2024-06-27 18:09:55,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:55,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:55,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:55,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:09:55,364 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:55,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1750145907, now seen corresponding path program 4 times [2024-06-27 18:09:55,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:55,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026932765] [2024-06-27 18:09:55,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:55,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:56,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:56,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026932765] [2024-06-27 18:09:56,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026932765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:56,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:56,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:56,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118175631] [2024-06-27 18:09:56,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:56,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:56,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:56,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:56,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:56,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:56,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 134 transitions, 1130 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:56,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:56,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:56,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:56,686 INFO L124 PetriNetUnfolderBase]: 884/1670 cut-off events. [2024-06-27 18:09:56,687 INFO L125 PetriNetUnfolderBase]: For 22389/22389 co-relation queries the response was YES. [2024-06-27 18:09:56,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8559 conditions, 1670 events. 884/1670 cut-off events. For 22389/22389 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10070 event pairs, 173 based on Foata normal form. 1/1616 useless extension candidates. Maximal degree in co-relation 8496. Up to 1145 conditions per place. [2024-06-27 18:09:56,698 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 116 selfloop transitions, 43 changer transitions 0/167 dead transitions. [2024-06-27 18:09:56,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 167 transitions, 1593 flow [2024-06-27 18:09:56,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:09:56,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 18:09:56,700 INFO L175 Difference]: Start difference. First operand has 134 places, 134 transitions, 1130 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:09:56,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 167 transitions, 1593 flow [2024-06-27 18:09:56,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 167 transitions, 1508 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:56,739 INFO L231 Difference]: Finished difference. Result has 138 places, 135 transitions, 1145 flow [2024-06-27 18:09:56,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1145, PETRI_PLACES=138, PETRI_TRANSITIONS=135} [2024-06-27 18:09:56,740 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-06-27 18:09:56,740 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 135 transitions, 1145 flow [2024-06-27 18:09:56,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:56,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:56,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:56,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:09:56,741 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:56,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:56,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1750146155, now seen corresponding path program 4 times [2024-06-27 18:09:56,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:56,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735755428] [2024-06-27 18:09:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:56,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:57,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:57,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735755428] [2024-06-27 18:09:57,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735755428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:57,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:57,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:57,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351869983] [2024-06-27 18:09:57,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:57,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:57,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:57,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:57,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:57,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:57,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 135 transitions, 1145 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:57,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:57,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:57,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:58,317 INFO L124 PetriNetUnfolderBase]: 895/1706 cut-off events. [2024-06-27 18:09:58,318 INFO L125 PetriNetUnfolderBase]: For 23479/23479 co-relation queries the response was YES. [2024-06-27 18:09:58,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8831 conditions, 1706 events. 895/1706 cut-off events. For 23479/23479 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10394 event pairs, 178 based on Foata normal form. 1/1650 useless extension candidates. Maximal degree in co-relation 8766. Up to 1206 conditions per place. [2024-06-27 18:09:58,331 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 122 selfloop transitions, 39 changer transitions 0/169 dead transitions. [2024-06-27 18:09:58,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 169 transitions, 1653 flow [2024-06-27 18:09:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:09:58,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 18:09:58,332 INFO L175 Difference]: Start difference. First operand has 138 places, 135 transitions, 1145 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:09:58,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 169 transitions, 1653 flow [2024-06-27 18:09:58,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 169 transitions, 1580 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:09:58,372 INFO L231 Difference]: Finished difference. Result has 141 places, 137 transitions, 1209 flow [2024-06-27 18:09:58,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1209, PETRI_PLACES=141, PETRI_TRANSITIONS=137} [2024-06-27 18:09:58,373 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 100 predicate places. [2024-06-27 18:09:58,373 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 137 transitions, 1209 flow [2024-06-27 18:09:58,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:58,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:58,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:58,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:09:58,374 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:58,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:58,374 INFO L85 PathProgramCache]: Analyzing trace with hash -365970143, now seen corresponding path program 5 times [2024-06-27 18:09:58,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:58,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280585399] [2024-06-27 18:09:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:58,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:09:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:59,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:09:59,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280585399] [2024-06-27 18:09:59,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280585399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:09:59,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:09:59,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:09:59,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287224776] [2024-06-27 18:09:59,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:09:59,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:09:59,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:59,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:09:59,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:09:59,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:09:59,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 1209 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:59,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:59,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:09:59,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:59,845 INFO L124 PetriNetUnfolderBase]: 906/1701 cut-off events. [2024-06-27 18:09:59,846 INFO L125 PetriNetUnfolderBase]: For 25953/25959 co-relation queries the response was YES. [2024-06-27 18:09:59,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9098 conditions, 1701 events. 906/1701 cut-off events. For 25953/25959 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10307 event pairs, 159 based on Foata normal form. 2/1644 useless extension candidates. Maximal degree in co-relation 9032. Up to 1259 conditions per place. [2024-06-27 18:09:59,857 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 129 selfloop transitions, 35 changer transitions 0/172 dead transitions. [2024-06-27 18:09:59,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 172 transitions, 1757 flow [2024-06-27 18:09:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:09:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:09:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:09:59,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 18:09:59,858 INFO L175 Difference]: Start difference. First operand has 141 places, 137 transitions, 1209 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:09:59,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 172 transitions, 1757 flow [2024-06-27 18:09:59,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 172 transitions, 1636 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 18:09:59,898 INFO L231 Difference]: Finished difference. Result has 143 places, 139 transitions, 1221 flow [2024-06-27 18:09:59,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1221, PETRI_PLACES=143, PETRI_TRANSITIONS=139} [2024-06-27 18:09:59,899 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 102 predicate places. [2024-06-27 18:09:59,899 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 139 transitions, 1221 flow [2024-06-27 18:09:59,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:59,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:59,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:59,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:09:59,900 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:09:59,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash -670451623, now seen corresponding path program 5 times [2024-06-27 18:09:59,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:59,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137589367] [2024-06-27 18:09:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:59,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:00,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:00,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137589367] [2024-06-27 18:10:00,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137589367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:00,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:00,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:00,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141098215] [2024-06-27 18:10:00,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:00,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:00,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:00,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 139 transitions, 1221 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:00,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:00,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:00,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:01,159 INFO L124 PetriNetUnfolderBase]: 928/1737 cut-off events. [2024-06-27 18:10:01,159 INFO L125 PetriNetUnfolderBase]: For 28211/28217 co-relation queries the response was YES. [2024-06-27 18:10:01,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9313 conditions, 1737 events. 928/1737 cut-off events. For 28211/28217 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10535 event pairs, 159 based on Foata normal form. 3/1680 useless extension candidates. Maximal degree in co-relation 9246. Up to 1282 conditions per place. [2024-06-27 18:10:01,171 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 131 selfloop transitions, 36 changer transitions 0/175 dead transitions. [2024-06-27 18:10:01,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 175 transitions, 1785 flow [2024-06-27 18:10:01,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:01,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:10:01,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 18:10:01,172 INFO L175 Difference]: Start difference. First operand has 143 places, 139 transitions, 1221 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:10:01,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 175 transitions, 1785 flow [2024-06-27 18:10:01,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 175 transitions, 1668 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:01,219 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 1252 flow [2024-06-27 18:10:01,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1252, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2024-06-27 18:10:01,219 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-27 18:10:01,219 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 1252 flow [2024-06-27 18:10:01,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:01,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:01,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:01,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:10:01,220 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:01,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:01,220 INFO L85 PathProgramCache]: Analyzing trace with hash 446994099, now seen corresponding path program 6 times [2024-06-27 18:10:01,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:01,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124536050] [2024-06-27 18:10:01,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:01,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:02,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:02,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124536050] [2024-06-27 18:10:02,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124536050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:02,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:02,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:02,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358854359] [2024-06-27 18:10:02,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:02,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:02,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:02,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:02,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:02,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 1252 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:02,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:02,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:02,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:02,809 INFO L124 PetriNetUnfolderBase]: 942/1758 cut-off events. [2024-06-27 18:10:02,809 INFO L125 PetriNetUnfolderBase]: For 30182/30188 co-relation queries the response was YES. [2024-06-27 18:10:02,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9644 conditions, 1758 events. 942/1758 cut-off events. For 30182/30188 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10613 event pairs, 149 based on Foata normal form. 2/1706 useless extension candidates. Maximal degree in co-relation 9576. Up to 1126 conditions per place. [2024-06-27 18:10:02,823 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 115 selfloop transitions, 56 changer transitions 0/179 dead transitions. [2024-06-27 18:10:02,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 179 transitions, 1932 flow [2024-06-27 18:10:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:02,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:02,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:10:02,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 18:10:02,824 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 1252 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:10:02,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 179 transitions, 1932 flow [2024-06-27 18:10:02,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 179 transitions, 1806 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:02,872 INFO L231 Difference]: Finished difference. Result has 147 places, 146 transitions, 1367 flow [2024-06-27 18:10:02,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1367, PETRI_PLACES=147, PETRI_TRANSITIONS=146} [2024-06-27 18:10:02,874 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-06-27 18:10:02,874 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 146 transitions, 1367 flow [2024-06-27 18:10:02,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:02,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:02,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:02,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:10:02,875 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:02,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:02,875 INFO L85 PathProgramCache]: Analyzing trace with hash 446994347, now seen corresponding path program 6 times [2024-06-27 18:10:02,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:02,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63233011] [2024-06-27 18:10:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:02,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:03,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:03,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63233011] [2024-06-27 18:10:03,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63233011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:03,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:03,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:03,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185686183] [2024-06-27 18:10:03,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:03,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:03,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:03,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:03,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:03,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 146 transitions, 1367 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:03,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:03,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:03,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:04,147 INFO L124 PetriNetUnfolderBase]: 1009/1852 cut-off events. [2024-06-27 18:10:04,147 INFO L125 PetriNetUnfolderBase]: For 36963/36969 co-relation queries the response was YES. [2024-06-27 18:10:04,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10665 conditions, 1852 events. 1009/1852 cut-off events. For 36963/36969 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10918 event pairs, 137 based on Foata normal form. 3/1805 useless extension candidates. Maximal degree in co-relation 10596. Up to 921 conditions per place. [2024-06-27 18:10:04,161 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 116 selfloop transitions, 67 changer transitions 0/191 dead transitions. [2024-06-27 18:10:04,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 191 transitions, 2219 flow [2024-06-27 18:10:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:10:04,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2024-06-27 18:10:04,162 INFO L175 Difference]: Start difference. First operand has 147 places, 146 transitions, 1367 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:10:04,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 191 transitions, 2219 flow [2024-06-27 18:10:04,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 191 transitions, 2116 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:04,224 INFO L231 Difference]: Finished difference. Result has 152 places, 154 transitions, 1622 flow [2024-06-27 18:10:04,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1622, PETRI_PLACES=152, PETRI_TRANSITIONS=154} [2024-06-27 18:10:04,225 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-27 18:10:04,225 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 154 transitions, 1622 flow [2024-06-27 18:10:04,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:04,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:04,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:04,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:10:04,225 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:04,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:04,226 INFO L85 PathProgramCache]: Analyzing trace with hash 161894229, now seen corresponding path program 7 times [2024-06-27 18:10:04,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:04,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555211688] [2024-06-27 18:10:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:04,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:05,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555211688] [2024-06-27 18:10:05,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555211688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:05,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:05,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335895787] [2024-06-27 18:10:05,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:05,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:05,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:05,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:05,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 154 transitions, 1622 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:05,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:05,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:05,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:05,786 INFO L124 PetriNetUnfolderBase]: 1007/1883 cut-off events. [2024-06-27 18:10:05,787 INFO L125 PetriNetUnfolderBase]: For 36572/36578 co-relation queries the response was YES. [2024-06-27 18:10:05,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11119 conditions, 1883 events. 1007/1883 cut-off events. For 36572/36578 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11555 event pairs, 164 based on Foata normal form. 2/1820 useless extension candidates. Maximal degree in co-relation 11047. Up to 1383 conditions per place. [2024-06-27 18:10:05,806 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 139 selfloop transitions, 39 changer transitions 0/186 dead transitions. [2024-06-27 18:10:05,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 186 transitions, 2124 flow [2024-06-27 18:10:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:05,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:10:05,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 18:10:05,808 INFO L175 Difference]: Start difference. First operand has 152 places, 154 transitions, 1622 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:10:05,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 186 transitions, 2124 flow [2024-06-27 18:10:05,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 186 transitions, 1984 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-27 18:10:05,899 INFO L231 Difference]: Finished difference. Result has 158 places, 154 transitions, 1589 flow [2024-06-27 18:10:05,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1589, PETRI_PLACES=158, PETRI_TRANSITIONS=154} [2024-06-27 18:10:05,899 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-27 18:10:05,899 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 154 transitions, 1589 flow [2024-06-27 18:10:05,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:05,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:05,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:05,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:10:05,900 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:05,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:05,900 INFO L85 PathProgramCache]: Analyzing trace with hash -365739255, now seen corresponding path program 7 times [2024-06-27 18:10:05,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:05,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021209385] [2024-06-27 18:10:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:05,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:06,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:06,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021209385] [2024-06-27 18:10:06,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021209385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:06,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:06,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:06,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757315145] [2024-06-27 18:10:06,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:06,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:06,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:06,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:06,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:06,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 154 transitions, 1589 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:06,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:06,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:06,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:07,493 INFO L124 PetriNetUnfolderBase]: 1018/1892 cut-off events. [2024-06-27 18:10:07,493 INFO L125 PetriNetUnfolderBase]: For 33989/33995 co-relation queries the response was YES. [2024-06-27 18:10:07,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10879 conditions, 1892 events. 1018/1892 cut-off events. For 33989/33995 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11597 event pairs, 163 based on Foata normal form. 2/1831 useless extension candidates. Maximal degree in co-relation 10805. Up to 1366 conditions per place. [2024-06-27 18:10:07,508 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 142 selfloop transitions, 43 changer transitions 0/193 dead transitions. [2024-06-27 18:10:07,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 193 transitions, 2250 flow [2024-06-27 18:10:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:10:07,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105105105105106 [2024-06-27 18:10:07,509 INFO L175 Difference]: Start difference. First operand has 158 places, 154 transitions, 1589 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:10:07,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 193 transitions, 2250 flow [2024-06-27 18:10:07,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 193 transitions, 2049 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-27 18:10:07,581 INFO L231 Difference]: Finished difference. Result has 157 places, 160 transitions, 1584 flow [2024-06-27 18:10:07,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1584, PETRI_PLACES=157, PETRI_TRANSITIONS=160} [2024-06-27 18:10:07,583 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2024-06-27 18:10:07,583 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 160 transitions, 1584 flow [2024-06-27 18:10:07,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:07,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:07,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:07,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:10:07,584 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:07,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:07,584 INFO L85 PathProgramCache]: Analyzing trace with hash 161902847, now seen corresponding path program 8 times [2024-06-27 18:10:07,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:07,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397852043] [2024-06-27 18:10:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:07,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:08,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:08,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397852043] [2024-06-27 18:10:08,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397852043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:08,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:08,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:08,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60250248] [2024-06-27 18:10:08,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:08,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:08,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:08,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:08,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:08,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 160 transitions, 1584 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:08,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:08,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:08,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:08,885 INFO L124 PetriNetUnfolderBase]: 1053/1943 cut-off events. [2024-06-27 18:10:08,886 INFO L125 PetriNetUnfolderBase]: For 37910/37916 co-relation queries the response was YES. [2024-06-27 18:10:08,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11177 conditions, 1943 events. 1053/1943 cut-off events. For 37910/37916 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11885 event pairs, 170 based on Foata normal form. 3/1884 useless extension candidates. Maximal degree in co-relation 11104. Up to 1363 conditions per place. [2024-06-27 18:10:08,900 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 143 selfloop transitions, 47 changer transitions 0/198 dead transitions. [2024-06-27 18:10:08,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 198 transitions, 2295 flow [2024-06-27 18:10:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:08,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:08,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 18:10:08,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165165165165165 [2024-06-27 18:10:08,902 INFO L175 Difference]: Start difference. First operand has 157 places, 160 transitions, 1584 flow. Second operand 9 states and 172 transitions. [2024-06-27 18:10:08,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 198 transitions, 2295 flow [2024-06-27 18:10:08,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 198 transitions, 2194 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 18:10:08,967 INFO L231 Difference]: Finished difference. Result has 163 places, 165 transitions, 1729 flow [2024-06-27 18:10:08,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1729, PETRI_PLACES=163, PETRI_TRANSITIONS=165} [2024-06-27 18:10:08,967 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 122 predicate places. [2024-06-27 18:10:08,967 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 165 transitions, 1729 flow [2024-06-27 18:10:08,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:08,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:08,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:08,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:10:08,968 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:08,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:08,968 INFO L85 PathProgramCache]: Analyzing trace with hash 447002717, now seen corresponding path program 9 times [2024-06-27 18:10:08,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:08,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275473099] [2024-06-27 18:10:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:08,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:09,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:09,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275473099] [2024-06-27 18:10:09,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275473099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:09,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:09,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:09,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170911950] [2024-06-27 18:10:09,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:09,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:09,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:09,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:09,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 165 transitions, 1729 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:09,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:09,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:09,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:10,276 INFO L124 PetriNetUnfolderBase]: 1075/1954 cut-off events. [2024-06-27 18:10:10,276 INFO L125 PetriNetUnfolderBase]: For 39669/39675 co-relation queries the response was YES. [2024-06-27 18:10:10,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11584 conditions, 1954 events. 1075/1954 cut-off events. For 39669/39675 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11568 event pairs, 137 based on Foata normal form. 3/1907 useless extension candidates. Maximal degree in co-relation 11508. Up to 981 conditions per place. [2024-06-27 18:10:10,292 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 120 selfloop transitions, 75 changer transitions 0/203 dead transitions. [2024-06-27 18:10:10,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 203 transitions, 2473 flow [2024-06-27 18:10:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:10,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 18:10:10,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285285285285285 [2024-06-27 18:10:10,294 INFO L175 Difference]: Start difference. First operand has 163 places, 165 transitions, 1729 flow. Second operand 9 states and 176 transitions. [2024-06-27 18:10:10,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 203 transitions, 2473 flow [2024-06-27 18:10:10,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 203 transitions, 2382 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:10,378 INFO L231 Difference]: Finished difference. Result has 167 places, 167 transitions, 1825 flow [2024-06-27 18:10:10,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1825, PETRI_PLACES=167, PETRI_TRANSITIONS=167} [2024-06-27 18:10:10,379 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-06-27 18:10:10,379 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 167 transitions, 1825 flow [2024-06-27 18:10:10,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:10,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:10,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:10,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:10:10,379 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:10,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:10,380 INFO L85 PathProgramCache]: Analyzing trace with hash 457122047, now seen corresponding path program 10 times [2024-06-27 18:10:10,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:10,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120352379] [2024-06-27 18:10:10,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:10,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:11,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:11,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120352379] [2024-06-27 18:10:11,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120352379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:11,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:11,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:11,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112854150] [2024-06-27 18:10:11,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:11,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:11,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:11,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:11,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:11,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 167 transitions, 1825 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:11,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:11,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:11,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:11,820 INFO L124 PetriNetUnfolderBase]: 1071/2044 cut-off events. [2024-06-27 18:10:11,821 INFO L125 PetriNetUnfolderBase]: For 39581/39581 co-relation queries the response was YES. [2024-06-27 18:10:11,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11879 conditions, 2044 events. 1071/2044 cut-off events. For 39581/39581 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12918 event pairs, 206 based on Foata normal form. 2/1970 useless extension candidates. Maximal degree in co-relation 11801. Up to 1614 conditions per place. [2024-06-27 18:10:11,837 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 176 selfloop transitions, 16 changer transitions 0/200 dead transitions. [2024-06-27 18:10:11,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 200 transitions, 2351 flow [2024-06-27 18:10:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:11,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 18:10:11,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 18:10:11,839 INFO L175 Difference]: Start difference. First operand has 167 places, 167 transitions, 1825 flow. Second operand 9 states and 161 transitions. [2024-06-27 18:10:11,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 200 transitions, 2351 flow [2024-06-27 18:10:11,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 200 transitions, 2217 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:11,919 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 1728 flow [2024-06-27 18:10:11,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1728, PETRI_PLACES=171, PETRI_TRANSITIONS=167} [2024-06-27 18:10:11,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-27 18:10:11,921 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 1728 flow [2024-06-27 18:10:11,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:11,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:11,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:11,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:10:11,921 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:11,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2098756271, now seen corresponding path program 1 times [2024-06-27 18:10:11,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:11,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429020690] [2024-06-27 18:10:11,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:11,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:11,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:11,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429020690] [2024-06-27 18:10:11,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429020690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:11,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:11,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:10:11,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911287431] [2024-06-27 18:10:11,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:11,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:10:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:11,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:10:11,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:10:11,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 18:10:11,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 167 transitions, 1728 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:11,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:11,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 18:10:11,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:12,226 INFO L124 PetriNetUnfolderBase]: 549/1123 cut-off events. [2024-06-27 18:10:12,226 INFO L125 PetriNetUnfolderBase]: For 27435/27496 co-relation queries the response was YES. [2024-06-27 18:10:12,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6726 conditions, 1123 events. 549/1123 cut-off events. For 27435/27496 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6383 event pairs, 118 based on Foata normal form. 75/1132 useless extension candidates. Maximal degree in co-relation 6648. Up to 340 conditions per place. [2024-06-27 18:10:12,235 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 79 selfloop transitions, 38 changer transitions 0/166 dead transitions. [2024-06-27 18:10:12,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 166 transitions, 2008 flow [2024-06-27 18:10:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:10:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:10:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-27 18:10:12,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-06-27 18:10:12,260 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 1728 flow. Second operand 4 states and 103 transitions. [2024-06-27 18:10:12,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 166 transitions, 2008 flow [2024-06-27 18:10:12,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 166 transitions, 1896 flow, removed 7 selfloop flow, removed 18 redundant places. [2024-06-27 18:10:12,321 INFO L231 Difference]: Finished difference. Result has 158 places, 153 transitions, 1686 flow [2024-06-27 18:10:12,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1686, PETRI_PLACES=158, PETRI_TRANSITIONS=153} [2024-06-27 18:10:12,321 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-27 18:10:12,321 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 153 transitions, 1686 flow [2024-06-27 18:10:12,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:12,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:12,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:12,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:10:12,322 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:12,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:12,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1251635858, now seen corresponding path program 1 times [2024-06-27 18:10:12,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:12,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643164454] [2024-06-27 18:10:12,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:12,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:13,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:13,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643164454] [2024-06-27 18:10:13,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643164454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:13,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:13,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:13,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244148809] [2024-06-27 18:10:13,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:13,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:13,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:13,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:13,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:13,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:13,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 1686 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:13,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:13,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:13,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:13,825 INFO L124 PetriNetUnfolderBase]: 677/1261 cut-off events. [2024-06-27 18:10:13,825 INFO L125 PetriNetUnfolderBase]: For 34311/34311 co-relation queries the response was YES. [2024-06-27 18:10:13,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7825 conditions, 1261 events. 677/1261 cut-off events. For 34311/34311 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6559 event pairs, 121 based on Foata normal form. 2/1195 useless extension candidates. Maximal degree in co-relation 7751. Up to 1020 conditions per place. [2024-06-27 18:10:13,834 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 160 selfloop transitions, 23 changer transitions 0/192 dead transitions. [2024-06-27 18:10:13,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 192 transitions, 2204 flow [2024-06-27 18:10:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:13,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:10:13,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:10:13,835 INFO L175 Difference]: Start difference. First operand has 158 places, 153 transitions, 1686 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:10:13,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 192 transitions, 2204 flow [2024-06-27 18:10:13,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 192 transitions, 2200 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 18:10:13,904 INFO L231 Difference]: Finished difference. Result has 169 places, 160 transitions, 1798 flow [2024-06-27 18:10:13,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1798, PETRI_PLACES=169, PETRI_TRANSITIONS=160} [2024-06-27 18:10:13,905 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 128 predicate places. [2024-06-27 18:10:13,905 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 160 transitions, 1798 flow [2024-06-27 18:10:13,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:13,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:13,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:13,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:10:13,906 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:13,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:13,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1260271722, now seen corresponding path program 2 times [2024-06-27 18:10:13,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:13,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118939069] [2024-06-27 18:10:13,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:13,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:14,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:14,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118939069] [2024-06-27 18:10:14,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118939069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:14,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:14,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:14,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571508999] [2024-06-27 18:10:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:14,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:14,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:14,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:14,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:14,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:14,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 160 transitions, 1798 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:14,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:14,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:14,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:15,025 INFO L124 PetriNetUnfolderBase]: 694/1293 cut-off events. [2024-06-27 18:10:15,025 INFO L125 PetriNetUnfolderBase]: For 36096/36096 co-relation queries the response was YES. [2024-06-27 18:10:15,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8305 conditions, 1293 events. 694/1293 cut-off events. For 36096/36096 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6763 event pairs, 53 based on Foata normal form. 2/1227 useless extension candidates. Maximal degree in co-relation 8226. Up to 997 conditions per place. [2024-06-27 18:10:15,035 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 159 selfloop transitions, 24 changer transitions 0/192 dead transitions. [2024-06-27 18:10:15,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 192 transitions, 2304 flow [2024-06-27 18:10:15,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:10:15,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:10:15,036 INFO L175 Difference]: Start difference. First operand has 169 places, 160 transitions, 1798 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:10:15,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 192 transitions, 2304 flow [2024-06-27 18:10:15,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 192 transitions, 2249 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:15,143 INFO L231 Difference]: Finished difference. Result has 173 places, 163 transitions, 1837 flow [2024-06-27 18:10:15,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1837, PETRI_PLACES=173, PETRI_TRANSITIONS=163} [2024-06-27 18:10:15,144 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-06-27 18:10:15,144 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 163 transitions, 1837 flow [2024-06-27 18:10:15,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:15,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:15,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:15,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:10:15,145 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:15,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:15,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1260333102, now seen corresponding path program 3 times [2024-06-27 18:10:15,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:15,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906253270] [2024-06-27 18:10:15,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:15,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:15,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:15,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906253270] [2024-06-27 18:10:15,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906253270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:15,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:15,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:15,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040574136] [2024-06-27 18:10:15,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:15,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:15,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:15,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:16,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:16,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 163 transitions, 1837 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:16,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:16,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:16,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:16,517 INFO L124 PetriNetUnfolderBase]: 711/1333 cut-off events. [2024-06-27 18:10:16,517 INFO L125 PetriNetUnfolderBase]: For 37833/37833 co-relation queries the response was YES. [2024-06-27 18:10:16,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8578 conditions, 1333 events. 711/1333 cut-off events. For 37833/37833 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7079 event pairs, 135 based on Foata normal form. 2/1264 useless extension candidates. Maximal degree in co-relation 8497. Up to 1099 conditions per place. [2024-06-27 18:10:16,527 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 161 selfloop transitions, 21 changer transitions 0/191 dead transitions. [2024-06-27 18:10:16,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 191 transitions, 2327 flow [2024-06-27 18:10:16,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:10:16,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:10:16,529 INFO L175 Difference]: Start difference. First operand has 173 places, 163 transitions, 1837 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:10:16,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 191 transitions, 2327 flow [2024-06-27 18:10:16,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 191 transitions, 2263 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:16,604 INFO L231 Difference]: Finished difference. Result has 176 places, 164 transitions, 1843 flow [2024-06-27 18:10:16,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1843, PETRI_PLACES=176, PETRI_TRANSITIONS=164} [2024-06-27 18:10:16,604 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 135 predicate places. [2024-06-27 18:10:16,604 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 164 transitions, 1843 flow [2024-06-27 18:10:16,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:16,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:16,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:16,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:10:16,605 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:16,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1263164394, now seen corresponding path program 1 times [2024-06-27 18:10:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:16,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548657381] [2024-06-27 18:10:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:16,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:17,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548657381] [2024-06-27 18:10:17,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548657381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:17,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:17,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401939189] [2024-06-27 18:10:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:17,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:17,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:17,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 164 transitions, 1843 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:17,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:17,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:17,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:18,442 INFO L124 PetriNetUnfolderBase]: 717/1342 cut-off events. [2024-06-27 18:10:18,442 INFO L125 PetriNetUnfolderBase]: For 37527/37527 co-relation queries the response was YES. [2024-06-27 18:10:18,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8567 conditions, 1342 events. 717/1342 cut-off events. For 37527/37527 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7128 event pairs, 134 based on Foata normal form. 1/1270 useless extension candidates. Maximal degree in co-relation 8485. Up to 1119 conditions per place. [2024-06-27 18:10:18,452 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 158 selfloop transitions, 24 changer transitions 0/191 dead transitions. [2024-06-27 18:10:18,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 191 transitions, 2359 flow [2024-06-27 18:10:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:18,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:10:18,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 18:10:18,474 INFO L175 Difference]: Start difference. First operand has 176 places, 164 transitions, 1843 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:10:18,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 191 transitions, 2359 flow [2024-06-27 18:10:18,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 191 transitions, 2303 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:18,553 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 1898 flow [2024-06-27 18:10:18,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1898, PETRI_PLACES=179, PETRI_TRANSITIONS=166} [2024-06-27 18:10:18,554 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-27 18:10:18,554 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 1898 flow [2024-06-27 18:10:18,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:18,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:18,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:18,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:10:18,555 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:18,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:18,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1379343342, now seen corresponding path program 4 times [2024-06-27 18:10:18,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:18,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789466849] [2024-06-27 18:10:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:18,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:19,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:19,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789466849] [2024-06-27 18:10:19,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789466849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:19,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:19,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262091953] [2024-06-27 18:10:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:19,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:19,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:19,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:19,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:19,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:19,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 166 transitions, 1898 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:19,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:19,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:19,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:19,885 INFO L124 PetriNetUnfolderBase]: 734/1382 cut-off events. [2024-06-27 18:10:19,885 INFO L125 PetriNetUnfolderBase]: For 39862/39862 co-relation queries the response was YES. [2024-06-27 18:10:19,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8744 conditions, 1382 events. 734/1382 cut-off events. For 39862/39862 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7430 event pairs, 140 based on Foata normal form. 2/1309 useless extension candidates. Maximal degree in co-relation 8661. Up to 1142 conditions per place. [2024-06-27 18:10:19,895 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 164 selfloop transitions, 22 changer transitions 0/195 dead transitions. [2024-06-27 18:10:19,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 195 transitions, 2424 flow [2024-06-27 18:10:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:10:19,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:10:19,900 INFO L175 Difference]: Start difference. First operand has 179 places, 166 transitions, 1898 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:10:19,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 195 transitions, 2424 flow [2024-06-27 18:10:19,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 195 transitions, 2333 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:10:19,978 INFO L231 Difference]: Finished difference. Result has 181 places, 170 transitions, 1922 flow [2024-06-27 18:10:19,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1922, PETRI_PLACES=181, PETRI_TRANSITIONS=170} [2024-06-27 18:10:19,980 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 140 predicate places. [2024-06-27 18:10:19,980 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 170 transitions, 1922 flow [2024-06-27 18:10:19,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:19,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:19,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:19,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:10:19,981 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:19,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1379551104, now seen corresponding path program 2 times [2024-06-27 18:10:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:19,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842962629] [2024-06-27 18:10:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:19,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:21,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:21,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842962629] [2024-06-27 18:10:21,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842962629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:21,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:21,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:21,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209429858] [2024-06-27 18:10:21,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:21,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:21,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:21,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:21,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:21,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:21,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 170 transitions, 1922 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:21,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:21,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:21,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:21,761 INFO L124 PetriNetUnfolderBase]: 766/1435 cut-off events. [2024-06-27 18:10:21,761 INFO L125 PetriNetUnfolderBase]: For 45638/45638 co-relation queries the response was YES. [2024-06-27 18:10:21,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9505 conditions, 1435 events. 766/1435 cut-off events. For 45638/45638 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7746 event pairs, 140 based on Foata normal form. 1/1354 useless extension candidates. Maximal degree in co-relation 9420. Up to 1146 conditions per place. [2024-06-27 18:10:21,773 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 158 selfloop transitions, 36 changer transitions 0/203 dead transitions. [2024-06-27 18:10:21,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 203 transitions, 2798 flow [2024-06-27 18:10:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:10:21,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 18:10:21,783 INFO L175 Difference]: Start difference. First operand has 181 places, 170 transitions, 1922 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:10:21,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 203 transitions, 2798 flow [2024-06-27 18:10:21,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 203 transitions, 2739 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:21,884 INFO L231 Difference]: Finished difference. Result has 185 places, 177 transitions, 2142 flow [2024-06-27 18:10:21,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2142, PETRI_PLACES=185, PETRI_TRANSITIONS=177} [2024-06-27 18:10:21,885 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 144 predicate places. [2024-06-27 18:10:21,885 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 177 transitions, 2142 flow [2024-06-27 18:10:21,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:21,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:21,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:21,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:10:21,891 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:21,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1379558544, now seen corresponding path program 3 times [2024-06-27 18:10:21,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:21,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360911206] [2024-06-27 18:10:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:21,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:22,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:22,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360911206] [2024-06-27 18:10:22,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360911206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:22,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:22,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:22,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364654745] [2024-06-27 18:10:22,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:22,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:22,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:22,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:22,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:23,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:23,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 177 transitions, 2142 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:23,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:23,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:23,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:23,578 INFO L124 PetriNetUnfolderBase]: 762/1429 cut-off events. [2024-06-27 18:10:23,578 INFO L125 PetriNetUnfolderBase]: For 45755/45755 co-relation queries the response was YES. [2024-06-27 18:10:23,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9356 conditions, 1429 events. 762/1429 cut-off events. For 45755/45755 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7692 event pairs, 140 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 9270. Up to 1143 conditions per place. [2024-06-27 18:10:23,589 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 158 selfloop transitions, 35 changer transitions 0/202 dead transitions. [2024-06-27 18:10:23,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 202 transitions, 2726 flow [2024-06-27 18:10:23,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:23,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:10:23,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 18:10:23,590 INFO L175 Difference]: Start difference. First operand has 185 places, 177 transitions, 2142 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:10:23,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 202 transitions, 2726 flow [2024-06-27 18:10:23,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 202 transitions, 2587 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:23,682 INFO L231 Difference]: Finished difference. Result has 190 places, 177 transitions, 2080 flow [2024-06-27 18:10:23,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2080, PETRI_PLACES=190, PETRI_TRANSITIONS=177} [2024-06-27 18:10:23,683 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 149 predicate places. [2024-06-27 18:10:23,683 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 177 transitions, 2080 flow [2024-06-27 18:10:23,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:23,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:23,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:23,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:10:23,688 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:23,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1572688106, now seen corresponding path program 5 times [2024-06-27 18:10:23,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:23,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505516129] [2024-06-27 18:10:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:23,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:24,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:24,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505516129] [2024-06-27 18:10:24,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505516129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:24,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:24,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:24,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401663533] [2024-06-27 18:10:24,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:24,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:24,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:24,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:24,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:24,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:24,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 177 transitions, 2080 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:24,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:24,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:24,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:25,103 INFO L124 PetriNetUnfolderBase]: 779/1469 cut-off events. [2024-06-27 18:10:25,103 INFO L125 PetriNetUnfolderBase]: For 45893/45893 co-relation queries the response was YES. [2024-06-27 18:10:25,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9449 conditions, 1469 events. 779/1469 cut-off events. For 45893/45893 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8012 event pairs, 145 based on Foata normal form. 2/1387 useless extension candidates. Maximal degree in co-relation 9361. Up to 1200 conditions per place. [2024-06-27 18:10:25,115 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 167 selfloop transitions, 25 changer transitions 0/201 dead transitions. [2024-06-27 18:10:25,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 201 transitions, 2586 flow [2024-06-27 18:10:25,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:25,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:10:25,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:10:25,117 INFO L175 Difference]: Start difference. First operand has 190 places, 177 transitions, 2080 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:10:25,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 201 transitions, 2586 flow [2024-06-27 18:10:25,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 201 transitions, 2516 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:10:25,227 INFO L231 Difference]: Finished difference. Result has 192 places, 180 transitions, 2113 flow [2024-06-27 18:10:25,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2113, PETRI_PLACES=192, PETRI_TRANSITIONS=180} [2024-06-27 18:10:25,227 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2024-06-27 18:10:25,228 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 180 transitions, 2113 flow [2024-06-27 18:10:25,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:25,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:25,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:25,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:10:25,228 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:25,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:25,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1580045708, now seen corresponding path program 4 times [2024-06-27 18:10:25,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:25,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881910202] [2024-06-27 18:10:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:25,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:26,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:26,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881910202] [2024-06-27 18:10:26,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881910202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:26,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:26,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:26,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74002172] [2024-06-27 18:10:26,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:26,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:26,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:26,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:26,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:26,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:26,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 180 transitions, 2113 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:26,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:26,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:26,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:26,902 INFO L124 PetriNetUnfolderBase]: 836/1560 cut-off events. [2024-06-27 18:10:26,902 INFO L125 PetriNetUnfolderBase]: For 58447/58447 co-relation queries the response was YES. [2024-06-27 18:10:26,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10902 conditions, 1560 events. 836/1560 cut-off events. For 58447/58447 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8590 event pairs, 146 based on Foata normal form. 1/1466 useless extension candidates. Maximal degree in co-relation 10812. Up to 1105 conditions per place. [2024-06-27 18:10:26,913 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 148 selfloop transitions, 57 changer transitions 0/214 dead transitions. [2024-06-27 18:10:26,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 214 transitions, 3249 flow [2024-06-27 18:10:26,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:10:26,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 18:10:26,914 INFO L175 Difference]: Start difference. First operand has 192 places, 180 transitions, 2113 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:10:26,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 214 transitions, 3249 flow [2024-06-27 18:10:27,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 214 transitions, 3179 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:27,021 INFO L231 Difference]: Finished difference. Result has 198 places, 191 transitions, 2523 flow [2024-06-27 18:10:27,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2523, PETRI_PLACES=198, PETRI_TRANSITIONS=191} [2024-06-27 18:10:27,022 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-27 18:10:27,022 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 191 transitions, 2523 flow [2024-06-27 18:10:27,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:27,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:27,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:27,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:10:27,022 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:27,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:27,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1492695077, now seen corresponding path program 1 times [2024-06-27 18:10:27,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:27,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363867769] [2024-06-27 18:10:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:27,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:28,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:28,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363867769] [2024-06-27 18:10:28,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363867769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:28,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:28,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:28,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585856787] [2024-06-27 18:10:28,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:28,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:28,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:28,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:28,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:28,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:28,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 191 transitions, 2523 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:28,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:28,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:28,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:28,616 INFO L124 PetriNetUnfolderBase]: 842/1568 cut-off events. [2024-06-27 18:10:28,616 INFO L125 PetriNetUnfolderBase]: For 61178/61178 co-relation queries the response was YES. [2024-06-27 18:10:28,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11219 conditions, 1568 events. 842/1568 cut-off events. For 61178/61178 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8611 event pairs, 146 based on Foata normal form. 1/1473 useless extension candidates. Maximal degree in co-relation 11126. Up to 1238 conditions per place. [2024-06-27 18:10:28,635 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 161 selfloop transitions, 42 changer transitions 0/212 dead transitions. [2024-06-27 18:10:28,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 212 transitions, 3064 flow [2024-06-27 18:10:28,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:10:28,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:10:28,642 INFO L175 Difference]: Start difference. First operand has 198 places, 191 transitions, 2523 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:10:28,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 212 transitions, 3064 flow [2024-06-27 18:10:28,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 212 transitions, 2911 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:28,842 INFO L231 Difference]: Finished difference. Result has 203 places, 193 transitions, 2524 flow [2024-06-27 18:10:28,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2524, PETRI_PLACES=203, PETRI_TRANSITIONS=193} [2024-06-27 18:10:28,842 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-27 18:10:28,843 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 193 transitions, 2524 flow [2024-06-27 18:10:28,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:28,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:28,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:28,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:10:28,843 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:28,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:28,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1580053148, now seen corresponding path program 5 times [2024-06-27 18:10:28,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:28,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090481194] [2024-06-27 18:10:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:28,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:29,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:29,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090481194] [2024-06-27 18:10:29,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090481194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:29,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:29,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:29,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007585191] [2024-06-27 18:10:29,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:29,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:29,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:29,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:29,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:29,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 193 transitions, 2524 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:29,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:29,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:29,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:30,428 INFO L124 PetriNetUnfolderBase]: 864/1609 cut-off events. [2024-06-27 18:10:30,429 INFO L125 PetriNetUnfolderBase]: For 65194/65194 co-relation queries the response was YES. [2024-06-27 18:10:30,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11592 conditions, 1609 events. 864/1609 cut-off events. For 65194/65194 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8910 event pairs, 148 based on Foata normal form. 2/1510 useless extension candidates. Maximal degree in co-relation 11498. Up to 1131 conditions per place. [2024-06-27 18:10:30,443 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 152 selfloop transitions, 60 changer transitions 0/221 dead transitions. [2024-06-27 18:10:30,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 221 transitions, 3492 flow [2024-06-27 18:10:30,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:30,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:30,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:10:30,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 18:10:30,444 INFO L175 Difference]: Start difference. First operand has 203 places, 193 transitions, 2524 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:10:30,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 221 transitions, 3492 flow [2024-06-27 18:10:30,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 221 transitions, 3385 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:10:30,602 INFO L231 Difference]: Finished difference. Result has 205 places, 198 transitions, 2678 flow [2024-06-27 18:10:30,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2678, PETRI_PLACES=205, PETRI_TRANSITIONS=198} [2024-06-27 18:10:30,602 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-27 18:10:30,602 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 198 transitions, 2678 flow [2024-06-27 18:10:30,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:30,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:30,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:30,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:10:30,603 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:30,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1873065012, now seen corresponding path program 6 times [2024-06-27 18:10:30,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:30,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699392435] [2024-06-27 18:10:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:30,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:31,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:31,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699392435] [2024-06-27 18:10:31,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699392435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:31,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:31,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:31,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907031445] [2024-06-27 18:10:31,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:31,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:31,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:31,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:31,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:31,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:31,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 198 transitions, 2678 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:31,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:31,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:31,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:32,182 INFO L124 PetriNetUnfolderBase]: 878/1634 cut-off events. [2024-06-27 18:10:32,183 INFO L125 PetriNetUnfolderBase]: For 70351/70351 co-relation queries the response was YES. [2024-06-27 18:10:32,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12062 conditions, 1634 events. 878/1634 cut-off events. For 70351/70351 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9070 event pairs, 148 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 11967. Up to 1303 conditions per place. [2024-06-27 18:10:32,198 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 176 selfloop transitions, 37 changer transitions 0/222 dead transitions. [2024-06-27 18:10:32,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 222 transitions, 3400 flow [2024-06-27 18:10:32,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:32,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:10:32,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 18:10:32,203 INFO L175 Difference]: Start difference. First operand has 205 places, 198 transitions, 2678 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:10:32,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 222 transitions, 3400 flow [2024-06-27 18:10:32,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 222 transitions, 3283 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:32,360 INFO L231 Difference]: Finished difference. Result has 210 places, 201 transitions, 2738 flow [2024-06-27 18:10:32,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2563, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2738, PETRI_PLACES=210, PETRI_TRANSITIONS=201} [2024-06-27 18:10:32,360 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2024-06-27 18:10:32,360 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 201 transitions, 2738 flow [2024-06-27 18:10:32,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:32,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:32,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:32,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:10:32,361 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:32,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:32,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1865655702, now seen corresponding path program 7 times [2024-06-27 18:10:32,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:32,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98971172] [2024-06-27 18:10:32,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:32,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:33,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:33,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98971172] [2024-06-27 18:10:33,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98971172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:33,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:33,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:33,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481005890] [2024-06-27 18:10:33,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:33,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:33,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:33,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:33,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:33,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:33,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 201 transitions, 2738 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:33,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:33,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:33,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:33,763 INFO L124 PetriNetUnfolderBase]: 876/1631 cut-off events. [2024-06-27 18:10:33,763 INFO L125 PetriNetUnfolderBase]: For 68762/68762 co-relation queries the response was YES. [2024-06-27 18:10:33,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11832 conditions, 1631 events. 876/1631 cut-off events. For 68762/68762 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9069 event pairs, 146 based on Foata normal form. 1/1528 useless extension candidates. Maximal degree in co-relation 11736. Up to 1242 conditions per place. [2024-06-27 18:10:33,777 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 162 selfloop transitions, 56 changer transitions 0/227 dead transitions. [2024-06-27 18:10:33,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 227 transitions, 3548 flow [2024-06-27 18:10:33,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:33,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:10:33,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:10:33,779 INFO L175 Difference]: Start difference. First operand has 210 places, 201 transitions, 2738 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:10:33,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 227 transitions, 3548 flow [2024-06-27 18:10:33,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 227 transitions, 3182 flow, removed 72 selfloop flow, removed 12 redundant places. [2024-06-27 18:10:33,929 INFO L231 Difference]: Finished difference. Result has 209 places, 207 transitions, 2716 flow [2024-06-27 18:10:33,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2716, PETRI_PLACES=209, PETRI_TRANSITIONS=207} [2024-06-27 18:10:33,930 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-27 18:10:33,930 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 207 transitions, 2716 flow [2024-06-27 18:10:33,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:33,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:33,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:33,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:10:33,931 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:33,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:33,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1572903587, now seen corresponding path program 2 times [2024-06-27 18:10:33,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:33,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720094369] [2024-06-27 18:10:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:33,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:35,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:35,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720094369] [2024-06-27 18:10:35,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720094369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:35,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:35,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:35,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067700646] [2024-06-27 18:10:35,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:35,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:35,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:35,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:35,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:35,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:35,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 207 transitions, 2716 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:35,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:35,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:35,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:35,596 INFO L124 PetriNetUnfolderBase]: 871/1622 cut-off events. [2024-06-27 18:10:35,596 INFO L125 PetriNetUnfolderBase]: For 63671/63671 co-relation queries the response was YES. [2024-06-27 18:10:35,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11334 conditions, 1622 events. 871/1622 cut-off events. For 63671/63671 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8987 event pairs, 147 based on Foata normal form. 2/1520 useless extension candidates. Maximal degree in co-relation 11238. Up to 1326 conditions per place. [2024-06-27 18:10:35,609 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 184 selfloop transitions, 31 changer transitions 0/224 dead transitions. [2024-06-27 18:10:35,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 224 transitions, 3212 flow [2024-06-27 18:10:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:35,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 18:10:35,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-27 18:10:35,611 INFO L175 Difference]: Start difference. First operand has 209 places, 207 transitions, 2716 flow. Second operand 9 states and 151 transitions. [2024-06-27 18:10:35,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 224 transitions, 3212 flow [2024-06-27 18:10:35,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 224 transitions, 3084 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:35,767 INFO L231 Difference]: Finished difference. Result has 211 places, 207 transitions, 2658 flow [2024-06-27 18:10:35,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2658, PETRI_PLACES=211, PETRI_TRANSITIONS=207} [2024-06-27 18:10:35,769 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2024-06-27 18:10:35,769 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 207 transitions, 2658 flow [2024-06-27 18:10:35,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:35,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:35,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:35,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:10:35,769 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:35,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1499852636, now seen corresponding path program 8 times [2024-06-27 18:10:35,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:35,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914424508] [2024-06-27 18:10:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:35,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:36,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914424508] [2024-06-27 18:10:36,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914424508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:36,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749924857] [2024-06-27 18:10:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:36,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:36,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:36,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:36,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:36,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:36,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 207 transitions, 2658 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:36,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:36,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:36,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:37,479 INFO L124 PetriNetUnfolderBase]: 869/1619 cut-off events. [2024-06-27 18:10:37,479 INFO L125 PetriNetUnfolderBase]: For 61934/61934 co-relation queries the response was YES. [2024-06-27 18:10:37,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11145 conditions, 1619 events. 869/1619 cut-off events. For 61934/61934 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8984 event pairs, 146 based on Foata normal form. 1/1516 useless extension candidates. Maximal degree in co-relation 11048. Up to 1318 conditions per place. [2024-06-27 18:10:37,493 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 183 selfloop transitions, 34 changer transitions 0/226 dead transitions. [2024-06-27 18:10:37,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 226 transitions, 3166 flow [2024-06-27 18:10:37,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:37,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:10:37,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:10:37,494 INFO L175 Difference]: Start difference. First operand has 211 places, 207 transitions, 2658 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:10:37,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 226 transitions, 3166 flow [2024-06-27 18:10:37,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 226 transitions, 3030 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:37,650 INFO L231 Difference]: Finished difference. Result has 214 places, 207 transitions, 2595 flow [2024-06-27 18:10:37,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2595, PETRI_PLACES=214, PETRI_TRANSITIONS=207} [2024-06-27 18:10:37,651 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-27 18:10:37,651 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 207 transitions, 2595 flow [2024-06-27 18:10:37,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:37,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:37,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:37,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:10:37,652 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:37,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:37,652 INFO L85 PathProgramCache]: Analyzing trace with hash -959831581, now seen corresponding path program 3 times [2024-06-27 18:10:37,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:37,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696713860] [2024-06-27 18:10:37,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:37,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:38,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:38,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696713860] [2024-06-27 18:10:38,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696713860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:38,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:38,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:38,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100454882] [2024-06-27 18:10:38,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:38,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:38,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:38,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:38,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:38,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:38,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 207 transitions, 2595 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:38,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:38,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:38,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:39,259 INFO L124 PetriNetUnfolderBase]: 875/1628 cut-off events. [2024-06-27 18:10:39,260 INFO L125 PetriNetUnfolderBase]: For 62837/62837 co-relation queries the response was YES. [2024-06-27 18:10:39,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11126 conditions, 1628 events. 875/1628 cut-off events. For 62837/62837 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9058 event pairs, 145 based on Foata normal form. 1/1524 useless extension candidates. Maximal degree in co-relation 11028. Up to 1286 conditions per place. [2024-06-27 18:10:39,273 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 175 selfloop transitions, 44 changer transitions 0/228 dead transitions. [2024-06-27 18:10:39,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 228 transitions, 3157 flow [2024-06-27 18:10:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:10:39,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:10:39,274 INFO L175 Difference]: Start difference. First operand has 214 places, 207 transitions, 2595 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:10:39,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 228 transitions, 3157 flow [2024-06-27 18:10:39,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 228 transitions, 3078 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:39,431 INFO L231 Difference]: Finished difference. Result has 217 places, 209 transitions, 2663 flow [2024-06-27 18:10:39,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2516, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2663, PETRI_PLACES=217, PETRI_TRANSITIONS=209} [2024-06-27 18:10:39,432 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-27 18:10:39,432 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 209 transitions, 2663 flow [2024-06-27 18:10:39,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:39,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:39,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:39,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:10:39,433 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:39,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:39,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1580322538, now seen corresponding path program 1 times [2024-06-27 18:10:39,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:39,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694538290] [2024-06-27 18:10:39,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:39,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:40,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:40,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694538290] [2024-06-27 18:10:40,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694538290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:40,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:40,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:40,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811876780] [2024-06-27 18:10:40,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:40,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:40,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:40,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:40,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:40,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:40,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 209 transitions, 2663 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:40,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:40,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:40,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:41,040 INFO L124 PetriNetUnfolderBase]: 892/1668 cut-off events. [2024-06-27 18:10:41,040 INFO L125 PetriNetUnfolderBase]: For 66903/66903 co-relation queries the response was YES. [2024-06-27 18:10:41,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11396 conditions, 1668 events. 892/1668 cut-off events. For 66903/66903 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9341 event pairs, 147 based on Foata normal form. 2/1563 useless extension candidates. Maximal degree in co-relation 11297. Up to 1411 conditions per place. [2024-06-27 18:10:41,055 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 210 selfloop transitions, 17 changer transitions 0/236 dead transitions. [2024-06-27 18:10:41,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 236 transitions, 3249 flow [2024-06-27 18:10:41,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:41,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 18:10:41,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 18:10:41,056 INFO L175 Difference]: Start difference. First operand has 217 places, 209 transitions, 2663 flow. Second operand 10 states and 161 transitions. [2024-06-27 18:10:41,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 236 transitions, 3249 flow [2024-06-27 18:10:41,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 236 transitions, 3128 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:10:41,221 INFO L231 Difference]: Finished difference. Result has 220 places, 211 transitions, 2619 flow [2024-06-27 18:10:41,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2619, PETRI_PLACES=220, PETRI_TRANSITIONS=211} [2024-06-27 18:10:41,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-27 18:10:41,221 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 211 transitions, 2619 flow [2024-06-27 18:10:41,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:41,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:41,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:41,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:10:41,222 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:41,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:41,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1580322197, now seen corresponding path program 4 times [2024-06-27 18:10:41,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:41,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591810737] [2024-06-27 18:10:41,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:41,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:42,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:42,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591810737] [2024-06-27 18:10:42,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591810737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:42,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:42,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:42,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941456619] [2024-06-27 18:10:42,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:42,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:42,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:42,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:42,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:42,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:42,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 211 transitions, 2619 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:42,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:42,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:42,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:43,211 INFO L124 PetriNetUnfolderBase]: 899/1678 cut-off events. [2024-06-27 18:10:43,212 INFO L125 PetriNetUnfolderBase]: For 66751/66751 co-relation queries the response was YES. [2024-06-27 18:10:43,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11480 conditions, 1678 events. 899/1678 cut-off events. For 66751/66751 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9416 event pairs, 142 based on Foata normal form. 1/1569 useless extension candidates. Maximal degree in co-relation 11379. Up to 1246 conditions per place. [2024-06-27 18:10:43,227 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 160 selfloop transitions, 66 changer transitions 0/235 dead transitions. [2024-06-27 18:10:43,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 235 transitions, 3343 flow [2024-06-27 18:10:43,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:10:43,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:10:43,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:10:43,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:10:43,228 INFO L175 Difference]: Start difference. First operand has 220 places, 211 transitions, 2619 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:10:43,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 235 transitions, 3343 flow [2024-06-27 18:10:43,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 235 transitions, 3291 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:10:43,410 INFO L231 Difference]: Finished difference. Result has 225 places, 213 transitions, 2798 flow [2024-06-27 18:10:43,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2798, PETRI_PLACES=225, PETRI_TRANSITIONS=213} [2024-06-27 18:10:43,411 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-27 18:10:43,411 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 213 transitions, 2798 flow [2024-06-27 18:10:43,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:43,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:43,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:43,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:10:43,412 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:43,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:43,412 INFO L85 PathProgramCache]: Analyzing trace with hash 716397866, now seen corresponding path program 6 times [2024-06-27 18:10:43,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:43,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231784983] [2024-06-27 18:10:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:43,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:44,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:44,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231784983] [2024-06-27 18:10:44,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231784983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:44,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:44,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:10:44,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921400176] [2024-06-27 18:10:44,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:44,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:10:44,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:44,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:10:44,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:10:44,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:44,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 213 transitions, 2798 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:44,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:44,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:44,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:44,749 INFO L124 PetriNetUnfolderBase]: 900/1690 cut-off events. [2024-06-27 18:10:44,749 INFO L125 PetriNetUnfolderBase]: For 66868/66871 co-relation queries the response was YES. [2024-06-27 18:10:44,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11564 conditions, 1690 events. 900/1690 cut-off events. For 66868/66871 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9556 event pairs, 156 based on Foata normal form. 2/1578 useless extension candidates. Maximal degree in co-relation 11461. Up to 1365 conditions per place. [2024-06-27 18:10:44,765 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 195 selfloop transitions, 30 changer transitions 0/234 dead transitions. [2024-06-27 18:10:44,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 234 transitions, 3358 flow [2024-06-27 18:10:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:44,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:44,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:10:44,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:10:44,766 INFO L175 Difference]: Start difference. First operand has 225 places, 213 transitions, 2798 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:10:44,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 234 transitions, 3358 flow [2024-06-27 18:10:44,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 234 transitions, 3139 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 18:10:44,953 INFO L231 Difference]: Finished difference. Result has 224 places, 215 transitions, 2681 flow [2024-06-27 18:10:44,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2681, PETRI_PLACES=224, PETRI_TRANSITIONS=215} [2024-06-27 18:10:44,953 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-27 18:10:44,954 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 215 transitions, 2681 flow [2024-06-27 18:10:44,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:44,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:44,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:44,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:10:44,954 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:44,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:44,955 INFO L85 PathProgramCache]: Analyzing trace with hash 723755468, now seen corresponding path program 9 times [2024-06-27 18:10:44,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:44,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502607519] [2024-06-27 18:10:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:44,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:46,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:46,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502607519] [2024-06-27 18:10:46,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502607519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:46,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:46,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:46,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756739960] [2024-06-27 18:10:46,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:46,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:46,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:46,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:46,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 215 transitions, 2681 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:46,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:46,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:46,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:46,842 INFO L124 PetriNetUnfolderBase]: 922/1726 cut-off events. [2024-06-27 18:10:46,843 INFO L125 PetriNetUnfolderBase]: For 71695/71698 co-relation queries the response was YES. [2024-06-27 18:10:46,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11976 conditions, 1726 events. 922/1726 cut-off events. For 71695/71698 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9795 event pairs, 155 based on Foata normal form. 1/1609 useless extension candidates. Maximal degree in co-relation 11873. Up to 1341 conditions per place. [2024-06-27 18:10:46,859 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 184 selfloop transitions, 47 changer transitions 0/240 dead transitions. [2024-06-27 18:10:46,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 240 transitions, 3677 flow [2024-06-27 18:10:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:10:46,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 18:10:46,860 INFO L175 Difference]: Start difference. First operand has 224 places, 215 transitions, 2681 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:10:46,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 240 transitions, 3677 flow [2024-06-27 18:10:47,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 240 transitions, 3563 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 18:10:47,062 INFO L231 Difference]: Finished difference. Result has 225 places, 221 transitions, 2892 flow [2024-06-27 18:10:47,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2892, PETRI_PLACES=225, PETRI_TRANSITIONS=221} [2024-06-27 18:10:47,062 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-27 18:10:47,062 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 221 transitions, 2892 flow [2024-06-27 18:10:47,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:47,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:47,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:47,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:10:47,063 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:47,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:47,063 INFO L85 PathProgramCache]: Analyzing trace with hash 716605628, now seen corresponding path program 10 times [2024-06-27 18:10:47,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:47,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334855650] [2024-06-27 18:10:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:47,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:48,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:48,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334855650] [2024-06-27 18:10:48,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334855650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:48,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:48,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:48,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972716046] [2024-06-27 18:10:48,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:48,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:48,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:48,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:48,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:48,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:48,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 221 transitions, 2892 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:48,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:48,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:48,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:49,108 INFO L124 PetriNetUnfolderBase]: 954/1782 cut-off events. [2024-06-27 18:10:49,108 INFO L125 PetriNetUnfolderBase]: For 81850/81853 co-relation queries the response was YES. [2024-06-27 18:10:49,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12796 conditions, 1782 events. 954/1782 cut-off events. For 81850/81853 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10146 event pairs, 155 based on Foata normal form. 1/1659 useless extension candidates. Maximal degree in co-relation 12694. Up to 1401 conditions per place. [2024-06-27 18:10:49,126 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 194 selfloop transitions, 45 changer transitions 0/248 dead transitions. [2024-06-27 18:10:49,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 248 transitions, 3958 flow [2024-06-27 18:10:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:49,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:10:49,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:10:49,128 INFO L175 Difference]: Start difference. First operand has 225 places, 221 transitions, 2892 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:10:49,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 248 transitions, 3958 flow [2024-06-27 18:10:49,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 248 transitions, 3790 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:49,364 INFO L231 Difference]: Finished difference. Result has 231 places, 229 transitions, 3112 flow [2024-06-27 18:10:49,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3112, PETRI_PLACES=231, PETRI_TRANSITIONS=229} [2024-06-27 18:10:49,365 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-27 18:10:49,365 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 229 transitions, 3112 flow [2024-06-27 18:10:49,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:49,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:49,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:49,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:10:49,365 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:49,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:49,366 INFO L85 PathProgramCache]: Analyzing trace with hash 716613068, now seen corresponding path program 11 times [2024-06-27 18:10:49,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:49,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325168960] [2024-06-27 18:10:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:49,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:50,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:50,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325168960] [2024-06-27 18:10:50,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325168960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:50,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:50,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927851766] [2024-06-27 18:10:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:50,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:50,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:50,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:50,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:50,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:50,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 229 transitions, 3112 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:50,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:50,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:50,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:51,013 INFO L124 PetriNetUnfolderBase]: 952/1779 cut-off events. [2024-06-27 18:10:51,013 INFO L125 PetriNetUnfolderBase]: For 80116/80119 co-relation queries the response was YES. [2024-06-27 18:10:51,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12696 conditions, 1779 events. 952/1779 cut-off events. For 80116/80119 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10141 event pairs, 156 based on Foata normal form. 1/1656 useless extension candidates. Maximal degree in co-relation 12591. Up to 1428 conditions per place. [2024-06-27 18:10:51,030 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 198 selfloop transitions, 39 changer transitions 0/246 dead transitions. [2024-06-27 18:10:51,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 246 transitions, 3654 flow [2024-06-27 18:10:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:51,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:10:51,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 18:10:51,031 INFO L175 Difference]: Start difference. First operand has 231 places, 229 transitions, 3112 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:10:51,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 246 transitions, 3654 flow [2024-06-27 18:10:51,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 246 transitions, 3489 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-27 18:10:51,258 INFO L231 Difference]: Finished difference. Result has 236 places, 229 transitions, 3030 flow [2024-06-27 18:10:51,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3030, PETRI_PLACES=236, PETRI_TRANSITIONS=229} [2024-06-27 18:10:51,258 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-27 18:10:51,259 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 229 transitions, 3030 flow [2024-06-27 18:10:51,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:51,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:51,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:51,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:10:51,259 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:51,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash 716613347, now seen corresponding path program 5 times [2024-06-27 18:10:51,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:51,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772448524] [2024-06-27 18:10:51,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:51,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:52,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:52,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772448524] [2024-06-27 18:10:52,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772448524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:52,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:52,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:52,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354970959] [2024-06-27 18:10:52,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:52,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:52,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:52,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:52,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:52,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:52,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 229 transitions, 3030 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:52,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:52,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:52,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:53,046 INFO L124 PetriNetUnfolderBase]: 948/1770 cut-off events. [2024-06-27 18:10:53,046 INFO L125 PetriNetUnfolderBase]: For 77404/77407 co-relation queries the response was YES. [2024-06-27 18:10:53,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12378 conditions, 1770 events. 948/1770 cut-off events. For 77404/77407 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10040 event pairs, 156 based on Foata normal form. 2/1648 useless extension candidates. Maximal degree in co-relation 12271. Up to 1427 conditions per place. [2024-06-27 18:10:53,063 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 200 selfloop transitions, 37 changer transitions 0/246 dead transitions. [2024-06-27 18:10:53,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 246 transitions, 3572 flow [2024-06-27 18:10:53,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:53,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:10:53,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 18:10:53,064 INFO L175 Difference]: Start difference. First operand has 236 places, 229 transitions, 3030 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:10:53,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 246 transitions, 3572 flow [2024-06-27 18:10:53,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 246 transitions, 3475 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 18:10:53,302 INFO L231 Difference]: Finished difference. Result has 237 places, 229 transitions, 3013 flow [2024-06-27 18:10:53,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2933, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3013, PETRI_PLACES=237, PETRI_TRANSITIONS=229} [2024-06-27 18:10:53,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-27 18:10:53,302 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 229 transitions, 3013 flow [2024-06-27 18:10:53,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:53,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:53,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:53,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:10:53,303 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:53,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:53,303 INFO L85 PathProgramCache]: Analyzing trace with hash 971916846, now seen corresponding path program 12 times [2024-06-27 18:10:53,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:53,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705425471] [2024-06-27 18:10:53,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:53,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:54,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:54,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705425471] [2024-06-27 18:10:54,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705425471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:54,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:54,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:54,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569116845] [2024-06-27 18:10:54,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:54,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:54,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:54,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:54,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:54,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:54,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 229 transitions, 3013 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:54,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:54,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:54,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:54,970 INFO L124 PetriNetUnfolderBase]: 972/1811 cut-off events. [2024-06-27 18:10:54,970 INFO L125 PetriNetUnfolderBase]: For 84838/84841 co-relation queries the response was YES. [2024-06-27 18:10:54,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13128 conditions, 1811 events. 972/1811 cut-off events. For 84838/84841 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10334 event pairs, 149 based on Foata normal form. 1/1683 useless extension candidates. Maximal degree in co-relation 13020. Up to 1006 conditions per place. [2024-06-27 18:10:54,988 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 141 selfloop transitions, 108 changer transitions 0/258 dead transitions. [2024-06-27 18:10:54,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 258 transitions, 4287 flow [2024-06-27 18:10:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:10:54,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:10:54,989 INFO L175 Difference]: Start difference. First operand has 237 places, 229 transitions, 3013 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:10:54,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 258 transitions, 4287 flow [2024-06-27 18:10:55,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 258 transitions, 4163 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 18:10:55,229 INFO L231 Difference]: Finished difference. Result has 240 places, 236 transitions, 3389 flow [2024-06-27 18:10:55,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2889, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3389, PETRI_PLACES=240, PETRI_TRANSITIONS=236} [2024-06-27 18:10:55,229 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-06-27 18:10:55,229 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 236 transitions, 3389 flow [2024-06-27 18:10:55,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:55,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:55,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:55,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:10:55,230 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:55,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:55,230 INFO L85 PathProgramCache]: Analyzing trace with hash 723762908, now seen corresponding path program 13 times [2024-06-27 18:10:55,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:55,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592010090] [2024-06-27 18:10:55,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:55,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:56,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592010090] [2024-06-27 18:10:56,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592010090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:56,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:56,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:56,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787543500] [2024-06-27 18:10:56,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:56,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:56,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:56,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:56,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:56,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:56,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 236 transitions, 3389 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:56,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:56,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:56,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:56,846 INFO L124 PetriNetUnfolderBase]: 995/1855 cut-off events. [2024-06-27 18:10:56,846 INFO L125 PetriNetUnfolderBase]: For 96864/96867 co-relation queries the response was YES. [2024-06-27 18:10:56,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14116 conditions, 1855 events. 995/1855 cut-off events. For 96864/96867 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10647 event pairs, 152 based on Foata normal form. 2/1723 useless extension candidates. Maximal degree in co-relation 14006. Up to 1376 conditions per place. [2024-06-27 18:10:56,865 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 194 selfloop transitions, 59 changer transitions 0/262 dead transitions. [2024-06-27 18:10:56,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 262 transitions, 4583 flow [2024-06-27 18:10:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:10:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:10:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:10:56,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:10:56,866 INFO L175 Difference]: Start difference. First operand has 240 places, 236 transitions, 3389 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:10:56,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 262 transitions, 4583 flow [2024-06-27 18:10:57,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 262 transitions, 4240 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-06-27 18:10:57,155 INFO L231 Difference]: Finished difference. Result has 244 places, 242 transitions, 3398 flow [2024-06-27 18:10:57,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3398, PETRI_PLACES=244, PETRI_TRANSITIONS=242} [2024-06-27 18:10:57,156 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-06-27 18:10:57,156 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 242 transitions, 3398 flow [2024-06-27 18:10:57,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:57,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:57,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:57,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:10:57,157 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:57,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:57,157 INFO L85 PathProgramCache]: Analyzing trace with hash 697987703, now seen corresponding path program 6 times [2024-06-27 18:10:57,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:57,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166311366] [2024-06-27 18:10:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:57,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:10:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:10:58,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:10:58,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166311366] [2024-06-27 18:10:58,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166311366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:10:58,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:10:58,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:10:58,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507126944] [2024-06-27 18:10:58,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:10:58,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:10:58,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:10:58,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:10:58,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:10:58,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:10:58,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 242 transitions, 3398 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:58,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:10:58,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:10:58,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:10:58,992 INFO L124 PetriNetUnfolderBase]: 992/1849 cut-off events. [2024-06-27 18:10:58,992 INFO L125 PetriNetUnfolderBase]: For 89796/89799 co-relation queries the response was YES. [2024-06-27 18:10:59,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13530 conditions, 1849 events. 992/1849 cut-off events. For 89796/89799 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10588 event pairs, 152 based on Foata normal form. 1/1716 useless extension candidates. Maximal degree in co-relation 13420. Up to 1448 conditions per place. [2024-06-27 18:10:59,011 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 202 selfloop transitions, 46 changer transitions 0/257 dead transitions. [2024-06-27 18:10:59,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 257 transitions, 3954 flow [2024-06-27 18:10:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:10:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:10:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:10:59,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:10:59,013 INFO L175 Difference]: Start difference. First operand has 244 places, 242 transitions, 3398 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:10:59,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 257 transitions, 3954 flow [2024-06-27 18:10:59,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 257 transitions, 3546 flow, removed 90 selfloop flow, removed 10 redundant places. [2024-06-27 18:10:59,293 INFO L231 Difference]: Finished difference. Result has 243 places, 242 transitions, 3088 flow [2024-06-27 18:10:59,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2990, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3088, PETRI_PLACES=243, PETRI_TRANSITIONS=242} [2024-06-27 18:10:59,294 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-27 18:10:59,294 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 242 transitions, 3088 flow [2024-06-27 18:10:59,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:10:59,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:10:59,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:10:59,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:10:59,295 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:10:59,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:10:59,295 INFO L85 PathProgramCache]: Analyzing trace with hash 947338094, now seen corresponding path program 14 times [2024-06-27 18:10:59,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:10:59,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559638787] [2024-06-27 18:10:59,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:10:59,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:10:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:00,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:00,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559638787] [2024-06-27 18:11:00,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559638787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:00,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:00,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:00,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286312417] [2024-06-27 18:11:00,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:00,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:00,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:00,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:00,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:00,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:00,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 242 transitions, 3088 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:00,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:00,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:00,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:00,967 INFO L124 PetriNetUnfolderBase]: 998/1861 cut-off events. [2024-06-27 18:11:00,967 INFO L125 PetriNetUnfolderBase]: For 87314/87317 co-relation queries the response was YES. [2024-06-27 18:11:00,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13042 conditions, 1861 events. 998/1861 cut-off events. For 87314/87317 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10695 event pairs, 149 based on Foata normal form. 1/1727 useless extension candidates. Maximal degree in co-relation 12934. Up to 1259 conditions per place. [2024-06-27 18:11:00,986 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 174 selfloop transitions, 89 changer transitions 0/272 dead transitions. [2024-06-27 18:11:00,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 272 transitions, 4189 flow [2024-06-27 18:11:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:00,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:00,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:11:00,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:11:00,987 INFO L175 Difference]: Start difference. First operand has 243 places, 242 transitions, 3088 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:11:00,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 272 transitions, 4189 flow [2024-06-27 18:11:01,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 272 transitions, 4074 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 18:11:01,245 INFO L231 Difference]: Finished difference. Result has 246 places, 251 transitions, 3393 flow [2024-06-27 18:11:01,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2977, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3393, PETRI_PLACES=246, PETRI_TRANSITIONS=251} [2024-06-27 18:11:01,245 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-27 18:11:01,245 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 251 transitions, 3393 flow [2024-06-27 18:11:01,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:01,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:01,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:01,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:11:01,246 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:01,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:01,246 INFO L85 PathProgramCache]: Analyzing trace with hash 972193676, now seen corresponding path program 2 times [2024-06-27 18:11:01,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:01,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508270426] [2024-06-27 18:11:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:01,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:02,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:02,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508270426] [2024-06-27 18:11:02,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508270426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:02,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:02,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:11:02,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583149969] [2024-06-27 18:11:02,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:02,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:11:02,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:02,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:11:02,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:11:02,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:02,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 251 transitions, 3393 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:02,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:02,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:02,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:02,809 INFO L124 PetriNetUnfolderBase]: 1015/1901 cut-off events. [2024-06-27 18:11:02,809 INFO L125 PetriNetUnfolderBase]: For 90834/90837 co-relation queries the response was YES. [2024-06-27 18:11:02,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13473 conditions, 1901 events. 1015/1901 cut-off events. For 90834/90837 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11011 event pairs, 148 based on Foata normal form. 4/1769 useless extension candidates. Maximal degree in co-relation 13363. Up to 1531 conditions per place. [2024-06-27 18:11:02,831 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 232 selfloop transitions, 33 changer transitions 0/274 dead transitions. [2024-06-27 18:11:02,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 274 transitions, 4064 flow [2024-06-27 18:11:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:11:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:11:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 18:11:02,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45645645645645644 [2024-06-27 18:11:02,832 INFO L175 Difference]: Start difference. First operand has 246 places, 251 transitions, 3393 flow. Second operand 9 states and 152 transitions. [2024-06-27 18:11:02,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 274 transitions, 4064 flow [2024-06-27 18:11:03,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 274 transitions, 3800 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-27 18:11:03,093 INFO L231 Difference]: Finished difference. Result has 249 places, 252 transitions, 3251 flow [2024-06-27 18:11:03,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3251, PETRI_PLACES=249, PETRI_TRANSITIONS=252} [2024-06-27 18:11:03,094 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-27 18:11:03,094 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 252 transitions, 3251 flow [2024-06-27 18:11:03,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:03,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:03,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:03,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:11:03,095 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:03,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:03,095 INFO L85 PathProgramCache]: Analyzing trace with hash 724032298, now seen corresponding path program 3 times [2024-06-27 18:11:03,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:03,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739147137] [2024-06-27 18:11:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:03,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:04,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739147137] [2024-06-27 18:11:04,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739147137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:04,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:04,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:04,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682078523] [2024-06-27 18:11:04,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:04,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:04,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:04,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:04,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:04,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:04,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 252 transitions, 3251 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:04,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:04,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:04,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:04,792 INFO L124 PetriNetUnfolderBase]: 1032/1941 cut-off events. [2024-06-27 18:11:04,792 INFO L125 PetriNetUnfolderBase]: For 91274/91277 co-relation queries the response was YES. [2024-06-27 18:11:04,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13456 conditions, 1941 events. 1032/1941 cut-off events. For 91274/91277 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11355 event pairs, 151 based on Foata normal form. 4/1806 useless extension candidates. Maximal degree in co-relation 13346. Up to 1620 conditions per place. [2024-06-27 18:11:04,807 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 247 selfloop transitions, 20 changer transitions 0/276 dead transitions. [2024-06-27 18:11:04,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 276 transitions, 3903 flow [2024-06-27 18:11:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:04,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 18:11:04,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:11:04,808 INFO L175 Difference]: Start difference. First operand has 249 places, 252 transitions, 3251 flow. Second operand 10 states and 160 transitions. [2024-06-27 18:11:04,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 276 transitions, 3903 flow [2024-06-27 18:11:05,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 276 transitions, 3809 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:11:05,070 INFO L231 Difference]: Finished difference. Result has 252 places, 253 transitions, 3227 flow [2024-06-27 18:11:05,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3227, PETRI_PLACES=252, PETRI_TRANSITIONS=253} [2024-06-27 18:11:05,071 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-27 18:11:05,071 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 253 transitions, 3227 flow [2024-06-27 18:11:05,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:05,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:05,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:05,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:11:05,072 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:05,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash 724022378, now seen corresponding path program 15 times [2024-06-27 18:11:05,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:05,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323619726] [2024-06-27 18:11:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:05,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:06,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:06,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323619726] [2024-06-27 18:11:06,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323619726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:06,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:06,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:06,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825333482] [2024-06-27 18:11:06,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:06,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:06,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:06,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:06,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:06,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:06,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 253 transitions, 3227 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:06,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:06,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:06,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:06,763 INFO L124 PetriNetUnfolderBase]: 1037/1948 cut-off events. [2024-06-27 18:11:06,763 INFO L125 PetriNetUnfolderBase]: For 90363/90366 co-relation queries the response was YES. [2024-06-27 18:11:06,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13344 conditions, 1948 events. 1037/1948 cut-off events. For 90363/90366 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11393 event pairs, 156 based on Foata normal form. 2/1807 useless extension candidates. Maximal degree in co-relation 13233. Up to 1451 conditions per place. [2024-06-27 18:11:06,782 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 202 selfloop transitions, 63 changer transitions 0/274 dead transitions. [2024-06-27 18:11:06,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 274 transitions, 4163 flow [2024-06-27 18:11:06,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 18:11:06,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 18:11:06,783 INFO L175 Difference]: Start difference. First operand has 252 places, 253 transitions, 3227 flow. Second operand 10 states and 172 transitions. [2024-06-27 18:11:06,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 274 transitions, 4163 flow [2024-06-27 18:11:07,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 274 transitions, 4039 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 18:11:07,039 INFO L231 Difference]: Finished difference. Result has 253 places, 255 transitions, 3295 flow [2024-06-27 18:11:07,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3103, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3295, PETRI_PLACES=253, PETRI_TRANSITIONS=255} [2024-06-27 18:11:07,040 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-27 18:11:07,040 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 255 transitions, 3295 flow [2024-06-27 18:11:07,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:07,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:07,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:07,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:11:07,041 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:07,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:07,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1296934796, now seen corresponding path program 4 times [2024-06-27 18:11:07,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:07,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001039442] [2024-06-27 18:11:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:07,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:08,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:08,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001039442] [2024-06-27 18:11:08,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001039442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:08,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:08,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:08,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944095731] [2024-06-27 18:11:08,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:08,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:08,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:08,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:08,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:08,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:08,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 255 transitions, 3295 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:08,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:08,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:08,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:08,850 INFO L124 PetriNetUnfolderBase]: 1054/1986 cut-off events. [2024-06-27 18:11:08,851 INFO L125 PetriNetUnfolderBase]: For 93039/93039 co-relation queries the response was YES. [2024-06-27 18:11:08,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13532 conditions, 1986 events. 1054/1986 cut-off events. For 93039/93039 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11688 event pairs, 165 based on Foata normal form. 2/1847 useless extension candidates. Maximal degree in co-relation 13421. Up to 1672 conditions per place. [2024-06-27 18:11:08,871 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 254 selfloop transitions, 17 changer transitions 0/280 dead transitions. [2024-06-27 18:11:08,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 280 transitions, 3958 flow [2024-06-27 18:11:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:08,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:11:08,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-27 18:11:08,873 INFO L175 Difference]: Start difference. First operand has 253 places, 255 transitions, 3295 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:11:08,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 280 transitions, 3958 flow [2024-06-27 18:11:09,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 280 transitions, 3802 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 18:11:09,185 INFO L231 Difference]: Finished difference. Result has 258 places, 257 transitions, 3215 flow [2024-06-27 18:11:09,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3139, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3215, PETRI_PLACES=258, PETRI_TRANSITIONS=257} [2024-06-27 18:11:09,186 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 217 predicate places. [2024-06-27 18:11:09,186 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 257 transitions, 3215 flow [2024-06-27 18:11:09,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:09,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:09,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:09,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:11:09,187 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:09,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1297320746, now seen corresponding path program 5 times [2024-06-27 18:11:09,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:09,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278814624] [2024-06-27 18:11:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:09,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:10,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:10,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278814624] [2024-06-27 18:11:10,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278814624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:10,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:10,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:10,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904657324] [2024-06-27 18:11:10,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:10,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:10,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:10,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:10,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:10,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:10,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 257 transitions, 3215 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:10,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:10,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:10,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:11,249 INFO L124 PetriNetUnfolderBase]: 1051/1989 cut-off events. [2024-06-27 18:11:11,249 INFO L125 PetriNetUnfolderBase]: For 89361/89361 co-relation queries the response was YES. [2024-06-27 18:11:11,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13169 conditions, 1989 events. 1051/1989 cut-off events. For 89361/89361 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11655 event pairs, 150 based on Foata normal form. 2/1852 useless extension candidates. Maximal degree in co-relation 13056. Up to 1615 conditions per place. [2024-06-27 18:11:11,273 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 257 selfloop transitions, 18 changer transitions 0/284 dead transitions. [2024-06-27 18:11:11,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 284 transitions, 3869 flow [2024-06-27 18:11:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 18:11:11,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:11:11,274 INFO L175 Difference]: Start difference. First operand has 258 places, 257 transitions, 3215 flow. Second operand 11 states and 176 transitions. [2024-06-27 18:11:11,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 284 transitions, 3869 flow [2024-06-27 18:11:11,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 284 transitions, 3813 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:11,592 INFO L231 Difference]: Finished difference. Result has 261 places, 257 transitions, 3199 flow [2024-06-27 18:11:11,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3199, PETRI_PLACES=261, PETRI_TRANSITIONS=257} [2024-06-27 18:11:11,593 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-27 18:11:11,593 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 257 transitions, 3199 flow [2024-06-27 18:11:11,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:11,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:11,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:11,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:11:11,594 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:11,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:11,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1796596540, now seen corresponding path program 16 times [2024-06-27 18:11:11,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:11,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697282165] [2024-06-27 18:11:11,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:11,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:12,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:12,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697282165] [2024-06-27 18:11:12,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697282165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:12,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:12,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:12,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077078709] [2024-06-27 18:11:12,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:12,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:12,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:12,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:12,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:12,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:12,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 257 transitions, 3199 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:12,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:12,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:12,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:13,266 INFO L124 PetriNetUnfolderBase]: 1091/2049 cut-off events. [2024-06-27 18:11:13,266 INFO L125 PetriNetUnfolderBase]: For 100102/100105 co-relation queries the response was YES. [2024-06-27 18:11:13,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14013 conditions, 2049 events. 1091/2049 cut-off events. For 100102/100105 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 12126 event pairs, 168 based on Foata normal form. 2/1897 useless extension candidates. Maximal degree in co-relation 13899. Up to 1168 conditions per place. [2024-06-27 18:11:13,291 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 157 selfloop transitions, 123 changer transitions 0/289 dead transitions. [2024-06-27 18:11:13,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 289 transitions, 4707 flow [2024-06-27 18:11:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:13,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:11:13,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 18:11:13,292 INFO L175 Difference]: Start difference. First operand has 261 places, 257 transitions, 3199 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:11:13,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 289 transitions, 4707 flow [2024-06-27 18:11:13,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 289 transitions, 4621 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 18:11:13,599 INFO L231 Difference]: Finished difference. Result has 261 places, 267 transitions, 3646 flow [2024-06-27 18:11:13,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3113, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3646, PETRI_PLACES=261, PETRI_TRANSITIONS=267} [2024-06-27 18:11:13,600 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-27 18:11:13,600 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 267 transitions, 3646 flow [2024-06-27 18:11:13,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:13,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:13,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:13,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:11:13,600 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:13,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1285882986, now seen corresponding path program 17 times [2024-06-27 18:11:13,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:13,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915029178] [2024-06-27 18:11:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:13,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:14,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:14,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915029178] [2024-06-27 18:11:14,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915029178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:14,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:14,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:14,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741136655] [2024-06-27 18:11:14,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:14,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:14,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:14,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:14,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 267 transitions, 3646 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:14,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:14,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:14,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:15,231 INFO L124 PetriNetUnfolderBase]: 1087/2042 cut-off events. [2024-06-27 18:11:15,231 INFO L125 PetriNetUnfolderBase]: For 98103/98103 co-relation queries the response was YES. [2024-06-27 18:11:15,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14062 conditions, 2042 events. 1087/2042 cut-off events. For 98103/98103 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 12080 event pairs, 163 based on Foata normal form. 2/1893 useless extension candidates. Maximal degree in co-relation 13947. Up to 1711 conditions per place. [2024-06-27 18:11:15,252 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 255 selfloop transitions, 22 changer transitions 0/286 dead transitions. [2024-06-27 18:11:15,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 286 transitions, 4434 flow [2024-06-27 18:11:15,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:15,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:15,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 18:11:15,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 18:11:15,253 INFO L175 Difference]: Start difference. First operand has 261 places, 267 transitions, 3646 flow. Second operand 10 states and 161 transitions. [2024-06-27 18:11:15,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 286 transitions, 4434 flow [2024-06-27 18:11:15,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 286 transitions, 4066 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-27 18:11:15,595 INFO L231 Difference]: Finished difference. Result has 265 places, 267 transitions, 3337 flow [2024-06-27 18:11:15,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3286, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3337, PETRI_PLACES=265, PETRI_TRANSITIONS=267} [2024-06-27 18:11:15,595 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-06-27 18:11:15,595 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 267 transitions, 3337 flow [2024-06-27 18:11:15,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:15,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:15,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:15,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:11:15,596 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:15,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:15,596 INFO L85 PathProgramCache]: Analyzing trace with hash 413719352, now seen corresponding path program 1 times [2024-06-27 18:11:15,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:15,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123512895] [2024-06-27 18:11:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:15,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:16,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:16,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123512895] [2024-06-27 18:11:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123512895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:16,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:16,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:16,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437928376] [2024-06-27 18:11:16,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:16,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:16,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:16,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:16,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:16,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:16,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 267 transitions, 3337 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:16,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:16,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:16,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:17,169 INFO L124 PetriNetUnfolderBase]: 1104/2066 cut-off events. [2024-06-27 18:11:17,170 INFO L125 PetriNetUnfolderBase]: For 97987/97987 co-relation queries the response was YES. [2024-06-27 18:11:17,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13571 conditions, 2066 events. 1104/2066 cut-off events. For 97987/97987 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 12232 event pairs, 75 based on Foata normal form. 2/1923 useless extension candidates. Maximal degree in co-relation 13456. Up to 1602 conditions per place. [2024-06-27 18:11:17,190 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 269 selfloop transitions, 25 changer transitions 0/303 dead transitions. [2024-06-27 18:11:17,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 303 transitions, 4081 flow [2024-06-27 18:11:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:17,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:17,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 18:11:17,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 18:11:17,191 INFO L175 Difference]: Start difference. First operand has 265 places, 267 transitions, 3337 flow. Second operand 10 states and 172 transitions. [2024-06-27 18:11:17,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 303 transitions, 4081 flow [2024-06-27 18:11:17,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 303 transitions, 3981 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:17,530 INFO L231 Difference]: Finished difference. Result has 267 places, 268 transitions, 3316 flow [2024-06-27 18:11:17,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3316, PETRI_PLACES=267, PETRI_TRANSITIONS=268} [2024-06-27 18:11:17,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-27 18:11:17,531 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 268 transitions, 3316 flow [2024-06-27 18:11:17,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:17,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:17,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:17,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:11:17,531 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:17,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:17,532 INFO L85 PathProgramCache]: Analyzing trace with hash 503385302, now seen corresponding path program 2 times [2024-06-27 18:11:17,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:17,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860929775] [2024-06-27 18:11:17,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:17,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:18,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:18,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860929775] [2024-06-27 18:11:18,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860929775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:18,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:18,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:18,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317171291] [2024-06-27 18:11:18,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:18,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:18,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:18,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:18,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:18,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:18,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 268 transitions, 3316 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:18,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:18,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:18,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:19,259 INFO L124 PetriNetUnfolderBase]: 1121/2113 cut-off events. [2024-06-27 18:11:19,260 INFO L125 PetriNetUnfolderBase]: For 100605/100605 co-relation queries the response was YES. [2024-06-27 18:11:19,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13828 conditions, 2113 events. 1121/2113 cut-off events. For 100605/100605 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12679 event pairs, 168 based on Foata normal form. 2/1962 useless extension candidates. Maximal degree in co-relation 13712. Up to 1744 conditions per place. [2024-06-27 18:11:19,283 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 266 selfloop transitions, 23 changer transitions 0/298 dead transitions. [2024-06-27 18:11:19,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 298 transitions, 4030 flow [2024-06-27 18:11:19,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:11:19,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 18:11:19,285 INFO L175 Difference]: Start difference. First operand has 267 places, 268 transitions, 3316 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:11:19,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 298 transitions, 4030 flow [2024-06-27 18:11:19,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 298 transitions, 3963 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:19,618 INFO L231 Difference]: Finished difference. Result has 269 places, 269 transitions, 3325 flow [2024-06-27 18:11:19,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3249, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3325, PETRI_PLACES=269, PETRI_TRANSITIONS=269} [2024-06-27 18:11:19,619 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-06-27 18:11:19,619 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 269 transitions, 3325 flow [2024-06-27 18:11:19,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:19,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:19,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:19,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:11:19,620 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:19,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:19,620 INFO L85 PathProgramCache]: Analyzing trace with hash 503207672, now seen corresponding path program 3 times [2024-06-27 18:11:19,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:19,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39283624] [2024-06-27 18:11:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:19,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:20,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39283624] [2024-06-27 18:11:20,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39283624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:20,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:20,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:20,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363167760] [2024-06-27 18:11:20,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:20,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:20,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:20,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:20,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:20,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 269 transitions, 3325 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:20,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:20,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:20,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:21,279 INFO L124 PetriNetUnfolderBase]: 1138/2151 cut-off events. [2024-06-27 18:11:21,279 INFO L125 PetriNetUnfolderBase]: For 104547/104547 co-relation queries the response was YES. [2024-06-27 18:11:21,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13985 conditions, 2151 events. 1138/2151 cut-off events. For 104547/104547 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 13007 event pairs, 162 based on Foata normal form. 2/1997 useless extension candidates. Maximal degree in co-relation 13868. Up to 1749 conditions per place. [2024-06-27 18:11:21,302 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 272 selfloop transitions, 22 changer transitions 0/303 dead transitions. [2024-06-27 18:11:21,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 303 transitions, 4065 flow [2024-06-27 18:11:21,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:21,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:11:21,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:11:21,305 INFO L175 Difference]: Start difference. First operand has 269 places, 269 transitions, 3325 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:11:21,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 303 transitions, 4065 flow [2024-06-27 18:11:21,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 303 transitions, 3999 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:21,661 INFO L231 Difference]: Finished difference. Result has 271 places, 270 transitions, 3335 flow [2024-06-27 18:11:21,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3259, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3335, PETRI_PLACES=271, PETRI_TRANSITIONS=270} [2024-06-27 18:11:21,677 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-27 18:11:21,677 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 270 transitions, 3335 flow [2024-06-27 18:11:21,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:21,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:21,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:21,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:11:21,681 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:21,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash 503392246, now seen corresponding path program 1 times [2024-06-27 18:11:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:21,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476736186] [2024-06-27 18:11:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:23,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476736186] [2024-06-27 18:11:23,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476736186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:23,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:23,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:23,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253434344] [2024-06-27 18:11:23,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:23,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:23,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:23,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:23,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:23,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:23,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 270 transitions, 3335 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:23,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:23,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:23,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:23,812 INFO L124 PetriNetUnfolderBase]: 1136/2150 cut-off events. [2024-06-27 18:11:23,812 INFO L125 PetriNetUnfolderBase]: For 100239/100239 co-relation queries the response was YES. [2024-06-27 18:11:23,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13791 conditions, 2150 events. 1136/2150 cut-off events. For 100239/100239 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 13007 event pairs, 174 based on Foata normal form. 1/1994 useless extension candidates. Maximal degree in co-relation 13673. Up to 1783 conditions per place. [2024-06-27 18:11:23,836 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 262 selfloop transitions, 26 changer transitions 0/297 dead transitions. [2024-06-27 18:11:23,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 297 transitions, 4017 flow [2024-06-27 18:11:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:11:23,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:11:23,837 INFO L175 Difference]: Start difference. First operand has 271 places, 270 transitions, 3335 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:11:23,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 297 transitions, 4017 flow [2024-06-27 18:11:24,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 297 transitions, 3915 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:24,180 INFO L231 Difference]: Finished difference. Result has 274 places, 270 transitions, 3290 flow [2024-06-27 18:11:24,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3233, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3290, PETRI_PLACES=274, PETRI_TRANSITIONS=270} [2024-06-27 18:11:24,181 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-27 18:11:24,181 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 270 transitions, 3290 flow [2024-06-27 18:11:24,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:24,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:24,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:24,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:11:24,182 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:24,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:24,182 INFO L85 PathProgramCache]: Analyzing trace with hash -183593984, now seen corresponding path program 4 times [2024-06-27 18:11:24,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:24,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503391628] [2024-06-27 18:11:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:24,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:25,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:25,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503391628] [2024-06-27 18:11:25,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503391628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:25,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:25,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:25,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271377792] [2024-06-27 18:11:25,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:25,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:25,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:25,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:25,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:25,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 270 transitions, 3290 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:25,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:25,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:25,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:26,142 INFO L124 PetriNetUnfolderBase]: 1153/2190 cut-off events. [2024-06-27 18:11:26,143 INFO L125 PetriNetUnfolderBase]: For 105118/105118 co-relation queries the response was YES. [2024-06-27 18:11:26,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13860 conditions, 2190 events. 1153/2190 cut-off events. For 105118/105118 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 13340 event pairs, 180 based on Foata normal form. 2/2033 useless extension candidates. Maximal degree in co-relation 13741. Up to 1794 conditions per place. [2024-06-27 18:11:26,167 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 263 selfloop transitions, 26 changer transitions 0/298 dead transitions. [2024-06-27 18:11:26,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 298 transitions, 4002 flow [2024-06-27 18:11:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:11:26,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:11:26,168 INFO L175 Difference]: Start difference. First operand has 274 places, 270 transitions, 3290 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:11:26,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 298 transitions, 4002 flow [2024-06-27 18:11:26,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 298 transitions, 3889 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 18:11:26,544 INFO L231 Difference]: Finished difference. Result has 274 places, 271 transitions, 3263 flow [2024-06-27 18:11:26,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3177, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3263, PETRI_PLACES=274, PETRI_TRANSITIONS=271} [2024-06-27 18:11:26,544 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-27 18:11:26,544 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 271 transitions, 3263 flow [2024-06-27 18:11:26,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:26,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:26,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:26,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:11:26,545 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:26,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:26,545 INFO L85 PathProgramCache]: Analyzing trace with hash -189850094, now seen corresponding path program 5 times [2024-06-27 18:11:26,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:26,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400616157] [2024-06-27 18:11:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:26,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:27,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:27,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400616157] [2024-06-27 18:11:27,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400616157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:27,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:27,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:27,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502361217] [2024-06-27 18:11:27,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:27,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:27,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:27,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:27,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:27,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 271 transitions, 3263 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:27,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:27,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:27,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:28,373 INFO L124 PetriNetUnfolderBase]: 1170/2229 cut-off events. [2024-06-27 18:11:28,374 INFO L125 PetriNetUnfolderBase]: For 109120/109120 co-relation queries the response was YES. [2024-06-27 18:11:28,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13968 conditions, 2229 events. 1170/2229 cut-off events. For 109120/109120 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13670 event pairs, 186 based on Foata normal form. 2/2070 useless extension candidates. Maximal degree in co-relation 13849. Up to 1808 conditions per place. [2024-06-27 18:11:28,398 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 264 selfloop transitions, 27 changer transitions 0/300 dead transitions. [2024-06-27 18:11:28,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 300 transitions, 3995 flow [2024-06-27 18:11:28,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:28,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:11:28,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:11:28,399 INFO L175 Difference]: Start difference. First operand has 274 places, 271 transitions, 3263 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:11:28,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 300 transitions, 3995 flow [2024-06-27 18:11:28,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 300 transitions, 3917 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:28,791 INFO L231 Difference]: Finished difference. Result has 277 places, 273 transitions, 3295 flow [2024-06-27 18:11:28,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3187, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3295, PETRI_PLACES=277, PETRI_TRANSITIONS=273} [2024-06-27 18:11:28,792 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-27 18:11:28,792 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 273 transitions, 3295 flow [2024-06-27 18:11:28,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:28,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:28,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:28,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:11:28,792 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:28,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash -190027724, now seen corresponding path program 6 times [2024-06-27 18:11:28,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:28,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157617058] [2024-06-27 18:11:28,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:28,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:29,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:29,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157617058] [2024-06-27 18:11:29,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157617058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:29,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:29,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361402685] [2024-06-27 18:11:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:29,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:29,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:30,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:30,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 273 transitions, 3295 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:30,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:30,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:30,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:30,788 INFO L124 PetriNetUnfolderBase]: 1187/2261 cut-off events. [2024-06-27 18:11:30,788 INFO L125 PetriNetUnfolderBase]: For 111997/111997 co-relation queries the response was YES. [2024-06-27 18:11:30,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14147 conditions, 2261 events. 1187/2261 cut-off events. For 111997/111997 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13962 event pairs, 183 based on Foata normal form. 2/2101 useless extension candidates. Maximal degree in co-relation 14026. Up to 1842 conditions per place. [2024-06-27 18:11:30,810 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 273 selfloop transitions, 23 changer transitions 0/305 dead transitions. [2024-06-27 18:11:30,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 305 transitions, 4039 flow [2024-06-27 18:11:30,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:30,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:30,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:11:30,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 18:11:30,812 INFO L175 Difference]: Start difference. First operand has 277 places, 273 transitions, 3295 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:11:30,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 305 transitions, 4039 flow [2024-06-27 18:11:31,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 305 transitions, 3963 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:11:31,259 INFO L231 Difference]: Finished difference. Result has 280 places, 274 transitions, 3303 flow [2024-06-27 18:11:31,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3303, PETRI_PLACES=280, PETRI_TRANSITIONS=274} [2024-06-27 18:11:31,260 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 239 predicate places. [2024-06-27 18:11:31,260 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 274 transitions, 3303 flow [2024-06-27 18:11:31,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:31,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:31,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:31,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:11:31,261 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:31,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:31,261 INFO L85 PathProgramCache]: Analyzing trace with hash -183587040, now seen corresponding path program 2 times [2024-06-27 18:11:31,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:31,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614828148] [2024-06-27 18:11:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:31,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:32,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:32,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614828148] [2024-06-27 18:11:32,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614828148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:32,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:32,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:32,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437690306] [2024-06-27 18:11:32,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:32,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:32,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:32,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:32,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:32,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:32,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 274 transitions, 3303 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:32,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:32,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:32,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:33,652 INFO L124 PetriNetUnfolderBase]: 1194/2279 cut-off events. [2024-06-27 18:11:33,653 INFO L125 PetriNetUnfolderBase]: For 110433/110433 co-relation queries the response was YES. [2024-06-27 18:11:33,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14153 conditions, 2279 events. 1194/2279 cut-off events. For 110433/110433 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 14083 event pairs, 196 based on Foata normal form. 1/2113 useless extension candidates. Maximal degree in co-relation 14031. Up to 1862 conditions per place. [2024-06-27 18:11:33,679 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 259 selfloop transitions, 33 changer transitions 0/301 dead transitions. [2024-06-27 18:11:33,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 301 transitions, 4045 flow [2024-06-27 18:11:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:33,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:11:33,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 18:11:33,681 INFO L175 Difference]: Start difference. First operand has 280 places, 274 transitions, 3303 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:11:33,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 301 transitions, 4045 flow [2024-06-27 18:11:34,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 301 transitions, 3971 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:34,136 INFO L231 Difference]: Finished difference. Result has 283 places, 276 transitions, 3362 flow [2024-06-27 18:11:34,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3229, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3362, PETRI_PLACES=283, PETRI_TRANSITIONS=276} [2024-06-27 18:11:34,136 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-27 18:11:34,137 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 276 transitions, 3362 flow [2024-06-27 18:11:34,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:34,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:34,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:34,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:11:34,137 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:34,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:34,138 INFO L85 PathProgramCache]: Analyzing trace with hash -183356400, now seen corresponding path program 3 times [2024-06-27 18:11:34,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:34,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131905241] [2024-06-27 18:11:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:34,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:35,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:35,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131905241] [2024-06-27 18:11:35,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131905241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:35,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:35,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:35,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488262922] [2024-06-27 18:11:35,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:35,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:35,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:35,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:35,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:35,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 276 transitions, 3362 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:35,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:35,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:35,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:36,354 INFO L124 PetriNetUnfolderBase]: 1192/2276 cut-off events. [2024-06-27 18:11:36,354 INFO L125 PetriNetUnfolderBase]: For 107935/107935 co-relation queries the response was YES. [2024-06-27 18:11:36,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13901 conditions, 2276 events. 1192/2276 cut-off events. For 107935/107935 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 14039 event pairs, 196 based on Foata normal form. 1/2110 useless extension candidates. Maximal degree in co-relation 13778. Up to 1859 conditions per place. [2024-06-27 18:11:36,380 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 258 selfloop transitions, 34 changer transitions 0/301 dead transitions. [2024-06-27 18:11:36,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 301 transitions, 4046 flow [2024-06-27 18:11:36,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:36,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:11:36,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:11:36,382 INFO L175 Difference]: Start difference. First operand has 283 places, 276 transitions, 3362 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:11:36,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 301 transitions, 4046 flow [2024-06-27 18:11:36,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 301 transitions, 3897 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 18:11:36,801 INFO L231 Difference]: Finished difference. Result has 285 places, 276 transitions, 3286 flow [2024-06-27 18:11:36,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3213, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3286, PETRI_PLACES=285, PETRI_TRANSITIONS=276} [2024-06-27 18:11:36,802 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-27 18:11:36,802 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 276 transitions, 3286 flow [2024-06-27 18:11:36,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:36,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:36,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:36,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:11:36,803 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:36,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:36,803 INFO L85 PathProgramCache]: Analyzing trace with hash -183347720, now seen corresponding path program 1 times [2024-06-27 18:11:36,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:36,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716941400] [2024-06-27 18:11:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:36,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:37,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:37,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716941400] [2024-06-27 18:11:37,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716941400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:37,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:37,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:37,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448905464] [2024-06-27 18:11:37,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:37,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:37,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:37,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:37,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:37,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:37,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 276 transitions, 3286 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:37,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:37,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:37,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:38,461 INFO L124 PetriNetUnfolderBase]: 1280/2500 cut-off events. [2024-06-27 18:11:38,462 INFO L125 PetriNetUnfolderBase]: For 149470/149470 co-relation queries the response was YES. [2024-06-27 18:11:38,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14904 conditions, 2500 events. 1280/2500 cut-off events. For 149470/149470 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 16022 event pairs, 234 based on Foata normal form. 12/2333 useless extension candidates. Maximal degree in co-relation 14781. Up to 1867 conditions per place. [2024-06-27 18:11:38,488 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 269 selfloop transitions, 30 changer transitions 0/308 dead transitions. [2024-06-27 18:11:38,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 308 transitions, 4096 flow [2024-06-27 18:11:38,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 18:11:38,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 18:11:38,490 INFO L175 Difference]: Start difference. First operand has 285 places, 276 transitions, 3286 flow. Second operand 10 states and 172 transitions. [2024-06-27 18:11:38,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 308 transitions, 4096 flow [2024-06-27 18:11:38,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 308 transitions, 3991 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 18:11:38,971 INFO L231 Difference]: Finished difference. Result has 285 places, 277 transitions, 3273 flow [2024-06-27 18:11:38,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3181, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3273, PETRI_PLACES=285, PETRI_TRANSITIONS=277} [2024-06-27 18:11:38,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-27 18:11:38,972 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 277 transitions, 3273 flow [2024-06-27 18:11:38,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:38,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:38,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:38,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:11:38,972 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:38,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:38,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1736771444, now seen corresponding path program 7 times [2024-06-27 18:11:38,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:38,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423931616] [2024-06-27 18:11:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:38,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:39,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:39,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423931616] [2024-06-27 18:11:39,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423931616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:39,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:39,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:39,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670933676] [2024-06-27 18:11:39,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:39,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:39,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:39,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:39,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:39,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:39,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 277 transitions, 3273 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:39,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:39,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:39,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:40,593 INFO L124 PetriNetUnfolderBase]: 1297/2540 cut-off events. [2024-06-27 18:11:40,593 INFO L125 PetriNetUnfolderBase]: For 121290/121290 co-relation queries the response was YES. [2024-06-27 18:11:40,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15215 conditions, 2540 events. 1297/2540 cut-off events. For 121290/121290 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 16421 event pairs, 239 based on Foata normal form. 2/2357 useless extension candidates. Maximal degree in co-relation 15091. Up to 2018 conditions per place. [2024-06-27 18:11:40,619 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 254 selfloop transitions, 38 changer transitions 0/301 dead transitions. [2024-06-27 18:11:40,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 301 transitions, 3979 flow [2024-06-27 18:11:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:40,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:11:40,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:11:40,620 INFO L175 Difference]: Start difference. First operand has 285 places, 277 transitions, 3273 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:11:40,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 301 transitions, 3979 flow [2024-06-27 18:11:41,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 301 transitions, 3915 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:41,087 INFO L231 Difference]: Finished difference. Result has 287 places, 278 transitions, 3325 flow [2024-06-27 18:11:41,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3325, PETRI_PLACES=287, PETRI_TRANSITIONS=278} [2024-06-27 18:11:41,087 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-27 18:11:41,087 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 278 transitions, 3325 flow [2024-06-27 18:11:41,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:41,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:41,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:41,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:11:41,088 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:41,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1508697314, now seen corresponding path program 8 times [2024-06-27 18:11:41,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:41,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822410152] [2024-06-27 18:11:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:41,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:42,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:42,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822410152] [2024-06-27 18:11:42,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822410152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:42,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:42,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:42,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623809457] [2024-06-27 18:11:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:42,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:42,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:42,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:42,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:42,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:42,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 278 transitions, 3325 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:42,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:42,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:42,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:42,889 INFO L124 PetriNetUnfolderBase]: 1314/2579 cut-off events. [2024-06-27 18:11:42,889 INFO L125 PetriNetUnfolderBase]: For 125419/125419 co-relation queries the response was YES. [2024-06-27 18:11:42,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15571 conditions, 2579 events. 1314/2579 cut-off events. For 125419/125419 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 16801 event pairs, 248 based on Foata normal form. 2/2394 useless extension candidates. Maximal degree in co-relation 15446. Up to 2095 conditions per place. [2024-06-27 18:11:42,920 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 267 selfloop transitions, 27 changer transitions 0/303 dead transitions. [2024-06-27 18:11:42,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 303 transitions, 4053 flow [2024-06-27 18:11:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:42,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:11:42,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 18:11:42,921 INFO L175 Difference]: Start difference. First operand has 287 places, 278 transitions, 3325 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:11:42,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 303 transitions, 4053 flow [2024-06-27 18:11:43,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 303 transitions, 3945 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:43,407 INFO L231 Difference]: Finished difference. Result has 290 places, 280 transitions, 3334 flow [2024-06-27 18:11:43,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3334, PETRI_PLACES=290, PETRI_TRANSITIONS=280} [2024-06-27 18:11:43,408 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2024-06-27 18:11:43,408 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 280 transitions, 3334 flow [2024-06-27 18:11:43,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:43,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:43,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:43,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:11:43,408 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:43,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:43,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1508692664, now seen corresponding path program 9 times [2024-06-27 18:11:43,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:43,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108992156] [2024-06-27 18:11:43,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:43,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:44,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:44,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108992156] [2024-06-27 18:11:44,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108992156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:44,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:44,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:44,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522028852] [2024-06-27 18:11:44,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:44,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:44,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:44,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:44,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:44,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:44,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 280 transitions, 3334 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:44,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:44,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:44,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:45,112 INFO L124 PetriNetUnfolderBase]: 1331/2617 cut-off events. [2024-06-27 18:11:45,112 INFO L125 PetriNetUnfolderBase]: For 128421/128421 co-relation queries the response was YES. [2024-06-27 18:11:45,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15711 conditions, 2617 events. 1331/2617 cut-off events. For 128421/128421 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 17159 event pairs, 242 based on Foata normal form. 2/2429 useless extension candidates. Maximal degree in co-relation 15584. Up to 2100 conditions per place. [2024-06-27 18:11:45,141 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 273 selfloop transitions, 26 changer transitions 0/308 dead transitions. [2024-06-27 18:11:45,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 308 transitions, 4072 flow [2024-06-27 18:11:45,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:11:45,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 18:11:45,143 INFO L175 Difference]: Start difference. First operand has 290 places, 280 transitions, 3334 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:11:45,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 308 transitions, 4072 flow [2024-06-27 18:11:45,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 308 transitions, 3989 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 18:11:45,645 INFO L231 Difference]: Finished difference. Result has 293 places, 281 transitions, 3347 flow [2024-06-27 18:11:45,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3251, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3347, PETRI_PLACES=293, PETRI_TRANSITIONS=281} [2024-06-27 18:11:45,646 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-27 18:11:45,646 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 281 transitions, 3347 flow [2024-06-27 18:11:45,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:45,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:45,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:45,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:11:45,647 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:45,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2064290884, now seen corresponding path program 10 times [2024-06-27 18:11:45,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:45,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227833711] [2024-06-27 18:11:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:45,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:46,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:46,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227833711] [2024-06-27 18:11:46,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227833711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:46,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:46,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:46,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402761326] [2024-06-27 18:11:46,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:46,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:46,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:46,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:46,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:46,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:46,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 281 transitions, 3347 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:46,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:46,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:46,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:47,494 INFO L124 PetriNetUnfolderBase]: 1348/2659 cut-off events. [2024-06-27 18:11:47,494 INFO L125 PetriNetUnfolderBase]: For 131682/131682 co-relation queries the response was YES. [2024-06-27 18:11:47,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15894 conditions, 2659 events. 1348/2659 cut-off events. For 131682/131682 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 17516 event pairs, 258 based on Foata normal form. 2/2468 useless extension candidates. Maximal degree in co-relation 15766. Up to 2147 conditions per place. [2024-06-27 18:11:47,523 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 266 selfloop transitions, 30 changer transitions 0/305 dead transitions. [2024-06-27 18:11:47,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 305 transitions, 4067 flow [2024-06-27 18:11:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:11:47,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:11:47,524 INFO L175 Difference]: Start difference. First operand has 293 places, 281 transitions, 3347 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:11:47,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 305 transitions, 4067 flow [2024-06-27 18:11:48,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 305 transitions, 3981 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:48,040 INFO L231 Difference]: Finished difference. Result has 295 places, 282 transitions, 3367 flow [2024-06-27 18:11:48,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3261, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3367, PETRI_PLACES=295, PETRI_TRANSITIONS=282} [2024-06-27 18:11:48,040 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-27 18:11:48,040 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 282 transitions, 3367 flow [2024-06-27 18:11:48,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:48,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:48,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:48,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:11:48,041 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:48,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:48,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2000453238, now seen corresponding path program 2 times [2024-06-27 18:11:48,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:48,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585142120] [2024-06-27 18:11:48,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:48,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:48,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:48,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585142120] [2024-06-27 18:11:48,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585142120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:48,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:48,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:11:48,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501960300] [2024-06-27 18:11:48,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:48,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:11:48,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:48,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:11:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:11:49,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:49,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 282 transitions, 3367 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:49,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:49,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:49,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:49,628 INFO L124 PetriNetUnfolderBase]: 1365/2699 cut-off events. [2024-06-27 18:11:49,628 INFO L125 PetriNetUnfolderBase]: For 133434/133434 co-relation queries the response was YES. [2024-06-27 18:11:49,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15966 conditions, 2699 events. 1365/2699 cut-off events. For 133434/133434 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 17862 event pairs, 261 based on Foata normal form. 2/2505 useless extension candidates. Maximal degree in co-relation 15837. Up to 2078 conditions per place. [2024-06-27 18:11:49,657 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 242 selfloop transitions, 55 changer transitions 0/306 dead transitions. [2024-06-27 18:11:49,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 306 transitions, 4075 flow [2024-06-27 18:11:49,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:11:49,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:11:49,659 INFO L175 Difference]: Start difference. First operand has 295 places, 282 transitions, 3367 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:11:49,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 306 transitions, 4075 flow [2024-06-27 18:11:50,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 306 transitions, 3979 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:50,153 INFO L231 Difference]: Finished difference. Result has 297 places, 283 transitions, 3414 flow [2024-06-27 18:11:50,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3271, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3414, PETRI_PLACES=297, PETRI_TRANSITIONS=283} [2024-06-27 18:11:50,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-27 18:11:50,154 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 283 transitions, 3414 flow [2024-06-27 18:11:50,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:50,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:50,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:50,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:11:50,155 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:50,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:50,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2064297828, now seen corresponding path program 4 times [2024-06-27 18:11:50,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:50,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823373481] [2024-06-27 18:11:50,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:50,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:51,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823373481] [2024-06-27 18:11:51,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823373481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:51,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:51,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:51,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68289729] [2024-06-27 18:11:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:51,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:51,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:51,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:51,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:51,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:51,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 283 transitions, 3414 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:51,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:51,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:51,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:52,350 INFO L124 PetriNetUnfolderBase]: 1372/2708 cut-off events. [2024-06-27 18:11:52,350 INFO L125 PetriNetUnfolderBase]: For 130065/130065 co-relation queries the response was YES. [2024-06-27 18:11:52,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15978 conditions, 2708 events. 1372/2708 cut-off events. For 130065/130065 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 17934 event pairs, 271 based on Foata normal form. 1/2511 useless extension candidates. Maximal degree in co-relation 15848. Up to 2163 conditions per place. [2024-06-27 18:11:52,379 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 256 selfloop transitions, 40 changer transitions 0/305 dead transitions. [2024-06-27 18:11:52,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 305 transitions, 4316 flow [2024-06-27 18:11:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:11:52,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:11:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:11:52,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 18:11:52,380 INFO L175 Difference]: Start difference. First operand has 297 places, 283 transitions, 3414 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:11:52,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 305 transitions, 4316 flow [2024-06-27 18:11:52,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 305 transitions, 4185 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:52,897 INFO L231 Difference]: Finished difference. Result has 299 places, 285 transitions, 3425 flow [2024-06-27 18:11:52,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3425, PETRI_PLACES=299, PETRI_TRANSITIONS=285} [2024-06-27 18:11:52,898 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-27 18:11:52,898 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 285 transitions, 3425 flow [2024-06-27 18:11:52,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:52,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:52,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:52,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:11:52,898 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:52,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:52,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2000453548, now seen corresponding path program 5 times [2024-06-27 18:11:52,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:52,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790309962] [2024-06-27 18:11:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:52,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:54,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:54,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790309962] [2024-06-27 18:11:54,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790309962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:54,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:54,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:54,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577793958] [2024-06-27 18:11:54,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:54,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:54,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:54,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:54,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:54,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:54,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 285 transitions, 3425 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:54,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:54,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:54,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:55,309 INFO L124 PetriNetUnfolderBase]: 1370/2706 cut-off events. [2024-06-27 18:11:55,310 INFO L125 PetriNetUnfolderBase]: For 127553/127553 co-relation queries the response was YES. [2024-06-27 18:11:55,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15679 conditions, 2706 events. 1370/2706 cut-off events. For 127553/127553 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 17922 event pairs, 261 based on Foata normal form. 1/2508 useless extension candidates. Maximal degree in co-relation 15548. Up to 2001 conditions per place. [2024-06-27 18:11:55,339 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 213 selfloop transitions, 90 changer transitions 0/312 dead transitions. [2024-06-27 18:11:55,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 312 transitions, 4493 flow [2024-06-27 18:11:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:11:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:11:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2024-06-27 18:11:55,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407484407484408 [2024-06-27 18:11:55,341 INFO L175 Difference]: Start difference. First operand has 299 places, 285 transitions, 3425 flow. Second operand 13 states and 212 transitions. [2024-06-27 18:11:55,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 312 transitions, 4493 flow [2024-06-27 18:11:55,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 312 transitions, 4336 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-27 18:11:55,919 INFO L231 Difference]: Finished difference. Result has 304 places, 285 transitions, 3458 flow [2024-06-27 18:11:55,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3272, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3458, PETRI_PLACES=304, PETRI_TRANSITIONS=285} [2024-06-27 18:11:55,920 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-27 18:11:55,920 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 285 transitions, 3458 flow [2024-06-27 18:11:55,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:55,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:55,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:55,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:11:55,921 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:55,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1515372668, now seen corresponding path program 3 times [2024-06-27 18:11:55,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:55,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692700143] [2024-06-27 18:11:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:55,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:11:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:11:57,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:11:57,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692700143] [2024-06-27 18:11:57,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692700143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:11:57,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:11:57,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:11:57,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797563306] [2024-06-27 18:11:57,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:11:57,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:11:57,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:11:57,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:11:57,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:11:57,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:11:57,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 285 transitions, 3458 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:57,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:11:57,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:11:57,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:11:58,194 INFO L124 PetriNetUnfolderBase]: 1441/2889 cut-off events. [2024-06-27 18:11:58,195 INFO L125 PetriNetUnfolderBase]: For 164329/164329 co-relation queries the response was YES. [2024-06-27 18:11:58,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16613 conditions, 2889 events. 1441/2889 cut-off events. For 164329/164329 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 19597 event pairs, 300 based on Foata normal form. 10/2691 useless extension candidates. Maximal degree in co-relation 16482. Up to 2163 conditions per place. [2024-06-27 18:11:58,226 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 268 selfloop transitions, 37 changer transitions 0/314 dead transitions. [2024-06-27 18:11:58,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 314 transitions, 4246 flow [2024-06-27 18:11:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:11:58,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:11:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:11:58,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 18:11:58,227 INFO L175 Difference]: Start difference. First operand has 304 places, 285 transitions, 3458 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:11:58,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 314 transitions, 4246 flow [2024-06-27 18:11:58,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 314 transitions, 4065 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 18:11:58,819 INFO L231 Difference]: Finished difference. Result has 304 places, 286 transitions, 3386 flow [2024-06-27 18:11:58,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3277, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3386, PETRI_PLACES=304, PETRI_TRANSITIONS=286} [2024-06-27 18:11:58,819 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-27 18:11:58,819 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 286 transitions, 3386 flow [2024-06-27 18:11:58,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:11:58,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:11:58,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:11:58,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:11:58,820 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:11:58,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:11:58,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2064528468, now seen corresponding path program 6 times [2024-06-27 18:11:58,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:11:58,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26547308] [2024-06-27 18:11:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:11:58,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:11:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:00,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:00,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26547308] [2024-06-27 18:12:00,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26547308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:00,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:00,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:00,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87788458] [2024-06-27 18:12:00,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:00,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:00,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:00,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:00,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 286 transitions, 3386 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:00,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:00,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:00,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:01,062 INFO L124 PetriNetUnfolderBase]: 1439/2886 cut-off events. [2024-06-27 18:12:01,063 INFO L125 PetriNetUnfolderBase]: For 128049/128049 co-relation queries the response was YES. [2024-06-27 18:12:01,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16338 conditions, 2886 events. 1439/2886 cut-off events. For 128049/128049 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 19588 event pairs, 306 based on Foata normal form. 1/2676 useless extension candidates. Maximal degree in co-relation 16206. Up to 2299 conditions per place. [2024-06-27 18:12:01,088 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 256 selfloop transitions, 42 changer transitions 0/307 dead transitions. [2024-06-27 18:12:01,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 307 transitions, 4064 flow [2024-06-27 18:12:01,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:12:01,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 18:12:01,089 INFO L175 Difference]: Start difference. First operand has 304 places, 286 transitions, 3386 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:12:01,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 307 transitions, 4064 flow [2024-06-27 18:12:01,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 307 transitions, 3910 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-27 18:12:01,658 INFO L231 Difference]: Finished difference. Result has 305 places, 286 transitions, 3321 flow [2024-06-27 18:12:01,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3321, PETRI_PLACES=305, PETRI_TRANSITIONS=286} [2024-06-27 18:12:01,659 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-27 18:12:01,659 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 286 transitions, 3321 flow [2024-06-27 18:12:01,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:01,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:01,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:01,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:12:01,660 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:01,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash 310292318, now seen corresponding path program 4 times [2024-06-27 18:12:01,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:01,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801303230] [2024-06-27 18:12:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:01,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:02,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:02,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:02,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801303230] [2024-06-27 18:12:02,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801303230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:02,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:02,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:02,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835039837] [2024-06-27 18:12:02,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:02,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:02,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:02,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:02,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 286 transitions, 3321 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:02,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:02,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:02,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:03,566 INFO L124 PetriNetUnfolderBase]: 1540/3129 cut-off events. [2024-06-27 18:12:03,566 INFO L125 PetriNetUnfolderBase]: For 177550/177550 co-relation queries the response was YES. [2024-06-27 18:12:03,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18257 conditions, 3129 events. 1540/3129 cut-off events. For 177550/177550 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21782 event pairs, 362 based on Foata normal form. 2/2917 useless extension candidates. Maximal degree in co-relation 18125. Up to 1897 conditions per place. [2024-06-27 18:12:03,599 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 250 selfloop transitions, 63 changer transitions 0/322 dead transitions. [2024-06-27 18:12:03,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 322 transitions, 4383 flow [2024-06-27 18:12:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:03,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:03,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 18:12:03,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 18:12:03,600 INFO L175 Difference]: Start difference. First operand has 305 places, 286 transitions, 3321 flow. Second operand 11 states and 193 transitions. [2024-06-27 18:12:03,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 322 transitions, 4383 flow [2024-06-27 18:12:04,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 322 transitions, 4278 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:12:04,247 INFO L231 Difference]: Finished difference. Result has 305 places, 288 transitions, 3408 flow [2024-06-27 18:12:04,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3216, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3408, PETRI_PLACES=305, PETRI_TRANSITIONS=288} [2024-06-27 18:12:04,247 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-27 18:12:04,247 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 288 transitions, 3408 flow [2024-06-27 18:12:04,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:04,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:04,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:04,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:12:04,248 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:04,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:04,248 INFO L85 PathProgramCache]: Analyzing trace with hash 979129486, now seen corresponding path program 7 times [2024-06-27 18:12:04,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:04,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307505976] [2024-06-27 18:12:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:04,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:06,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:06,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307505976] [2024-06-27 18:12:06,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307505976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:06,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:06,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:06,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384274619] [2024-06-27 18:12:06,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:06,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:06,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:06,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:06,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:06,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:06,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 288 transitions, 3408 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:06,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:06,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:06,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:07,160 INFO L124 PetriNetUnfolderBase]: 1538/3112 cut-off events. [2024-06-27 18:12:07,160 INFO L125 PetriNetUnfolderBase]: For 172741/172741 co-relation queries the response was YES. [2024-06-27 18:12:07,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18306 conditions, 3112 events. 1538/3112 cut-off events. For 172741/172741 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21660 event pairs, 375 based on Foata normal form. 1/2892 useless extension candidates. Maximal degree in co-relation 18173. Up to 2425 conditions per place. [2024-06-27 18:12:07,195 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 239 selfloop transitions, 61 changer transitions 0/309 dead transitions. [2024-06-27 18:12:07,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 309 transitions, 4090 flow [2024-06-27 18:12:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:12:07,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 18:12:07,196 INFO L175 Difference]: Start difference. First operand has 305 places, 288 transitions, 3408 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:12:07,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 309 transitions, 4090 flow [2024-06-27 18:12:07,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 309 transitions, 3960 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 18:12:07,844 INFO L231 Difference]: Finished difference. Result has 310 places, 288 transitions, 3405 flow [2024-06-27 18:12:07,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3278, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3405, PETRI_PLACES=310, PETRI_TRANSITIONS=288} [2024-06-27 18:12:07,847 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 269 predicate places. [2024-06-27 18:12:07,847 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 288 transitions, 3405 flow [2024-06-27 18:12:07,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:07,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:07,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:07,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:12:07,848 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:07,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:07,848 INFO L85 PathProgramCache]: Analyzing trace with hash 301710898, now seen corresponding path program 8 times [2024-06-27 18:12:07,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:07,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119784189] [2024-06-27 18:12:07,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:07,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:09,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:09,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119784189] [2024-06-27 18:12:09,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119784189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:09,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:09,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:09,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173962477] [2024-06-27 18:12:09,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:09,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:09,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:09,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:09,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:09,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:09,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 288 transitions, 3405 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:09,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:09,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:09,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:10,187 INFO L124 PetriNetUnfolderBase]: 1545/3122 cut-off events. [2024-06-27 18:12:10,188 INFO L125 PetriNetUnfolderBase]: For 174641/174641 co-relation queries the response was YES. [2024-06-27 18:12:10,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18349 conditions, 3122 events. 1545/3122 cut-off events. For 174641/174641 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 21747 event pairs, 375 based on Foata normal form. 1/2900 useless extension candidates. Maximal degree in co-relation 18214. Up to 2435 conditions per place. [2024-06-27 18:12:10,222 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 246 selfloop transitions, 56 changer transitions 0/311 dead transitions. [2024-06-27 18:12:10,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 311 transitions, 4149 flow [2024-06-27 18:12:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:12:10,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 18:12:10,223 INFO L175 Difference]: Start difference. First operand has 310 places, 288 transitions, 3405 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:12:10,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 311 transitions, 4149 flow [2024-06-27 18:12:11,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 311 transitions, 4017 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 18:12:11,017 INFO L231 Difference]: Finished difference. Result has 311 places, 290 transitions, 3452 flow [2024-06-27 18:12:11,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3273, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3452, PETRI_PLACES=311, PETRI_TRANSITIONS=290} [2024-06-27 18:12:11,018 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-27 18:12:11,018 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 290 transitions, 3452 flow [2024-06-27 18:12:11,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:11,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:11,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:11,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:12:11,018 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:11,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:11,019 INFO L85 PathProgramCache]: Analyzing trace with hash 971085916, now seen corresponding path program 9 times [2024-06-27 18:12:11,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:11,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27666920] [2024-06-27 18:12:11,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:11,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:12,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:12,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27666920] [2024-06-27 18:12:12,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27666920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:12,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:12,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:12,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466778769] [2024-06-27 18:12:12,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:12,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:12,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:12,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:12,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:12,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:12,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 290 transitions, 3452 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:12,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:12,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:12,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:13,808 INFO L124 PetriNetUnfolderBase]: 1543/3119 cut-off events. [2024-06-27 18:12:13,809 INFO L125 PetriNetUnfolderBase]: For 173424/173424 co-relation queries the response was YES. [2024-06-27 18:12:13,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18244 conditions, 3119 events. 1543/3119 cut-off events. For 173424/173424 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 21686 event pairs, 375 based on Foata normal form. 1/2897 useless extension candidates. Maximal degree in co-relation 18108. Up to 2432 conditions per place. [2024-06-27 18:12:13,844 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 247 selfloop transitions, 55 changer transitions 0/311 dead transitions. [2024-06-27 18:12:13,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 311 transitions, 4138 flow [2024-06-27 18:12:13,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:12:13,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 18:12:13,845 INFO L175 Difference]: Start difference. First operand has 311 places, 290 transitions, 3452 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:12:13,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 311 transitions, 4138 flow [2024-06-27 18:12:14,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 311 transitions, 3958 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:14,694 INFO L231 Difference]: Finished difference. Result has 314 places, 290 transitions, 3387 flow [2024-06-27 18:12:14,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3272, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3387, PETRI_PLACES=314, PETRI_TRANSITIONS=290} [2024-06-27 18:12:14,695 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 273 predicate places. [2024-06-27 18:12:14,695 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 290 transitions, 3387 flow [2024-06-27 18:12:14,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:14,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:14,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:14,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:12:14,695 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:14,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash 971094596, now seen corresponding path program 5 times [2024-06-27 18:12:14,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:14,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305613422] [2024-06-27 18:12:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:14,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:15,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:15,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305613422] [2024-06-27 18:12:15,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305613422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:15,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:15,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:15,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629266844] [2024-06-27 18:12:15,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:15,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:15,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:15,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:16,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:16,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 290 transitions, 3387 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:16,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:16,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:16,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:16,836 INFO L124 PetriNetUnfolderBase]: 1540/3114 cut-off events. [2024-06-27 18:12:16,836 INFO L125 PetriNetUnfolderBase]: For 170812/170812 co-relation queries the response was YES. [2024-06-27 18:12:16,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17902 conditions, 3114 events. 1540/3114 cut-off events. For 170812/170812 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 21675 event pairs, 368 based on Foata normal form. 2/2894 useless extension candidates. Maximal degree in co-relation 17765. Up to 2376 conditions per place. [2024-06-27 18:12:16,870 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 246 selfloop transitions, 58 changer transitions 0/313 dead transitions. [2024-06-27 18:12:16,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 313 transitions, 4083 flow [2024-06-27 18:12:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 18:12:16,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 18:12:16,872 INFO L175 Difference]: Start difference. First operand has 314 places, 290 transitions, 3387 flow. Second operand 10 states and 172 transitions. [2024-06-27 18:12:16,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 313 transitions, 4083 flow [2024-06-27 18:12:17,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 313 transitions, 3930 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 18:12:17,675 INFO L231 Difference]: Finished difference. Result has 313 places, 290 transitions, 3354 flow [2024-06-27 18:12:17,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3234, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3354, PETRI_PLACES=313, PETRI_TRANSITIONS=290} [2024-06-27 18:12:17,675 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-27 18:12:17,676 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 290 transitions, 3354 flow [2024-06-27 18:12:17,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:17,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:17,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:17,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:12:17,676 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:17,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash -148361566, now seen corresponding path program 11 times [2024-06-27 18:12:17,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:17,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274900511] [2024-06-27 18:12:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:18,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:18,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274900511] [2024-06-27 18:12:18,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274900511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:18,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:18,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:18,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526855845] [2024-06-27 18:12:18,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:18,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:18,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:18,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:18,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:18,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 290 transitions, 3354 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:18,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:18,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:18,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:19,583 INFO L124 PetriNetUnfolderBase]: 1557/3155 cut-off events. [2024-06-27 18:12:19,583 INFO L125 PetriNetUnfolderBase]: For 176829/176832 co-relation queries the response was YES. [2024-06-27 18:12:19,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18288 conditions, 3155 events. 1557/3155 cut-off events. For 176829/176832 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 22065 event pairs, 383 based on Foata normal form. 2/2929 useless extension candidates. Maximal degree in co-relation 18150. Up to 2442 conditions per place. [2024-06-27 18:12:19,620 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 246 selfloop transitions, 57 changer transitions 0/312 dead transitions. [2024-06-27 18:12:19,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 312 transitions, 4084 flow [2024-06-27 18:12:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:19,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:12:19,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:12:19,622 INFO L175 Difference]: Start difference. First operand has 313 places, 290 transitions, 3354 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:12:19,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 312 transitions, 4084 flow [2024-06-27 18:12:20,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 312 transitions, 3927 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 18:12:20,333 INFO L231 Difference]: Finished difference. Result has 314 places, 291 transitions, 3359 flow [2024-06-27 18:12:20,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3359, PETRI_PLACES=314, PETRI_TRANSITIONS=291} [2024-06-27 18:12:20,333 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 273 predicate places. [2024-06-27 18:12:20,333 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 291 transitions, 3359 flow [2024-06-27 18:12:20,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:20,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:20,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:20,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:12:20,334 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:20,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:20,334 INFO L85 PathProgramCache]: Analyzing trace with hash 961577780, now seen corresponding path program 12 times [2024-06-27 18:12:20,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:20,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949417400] [2024-06-27 18:12:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:20,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:21,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:21,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949417400] [2024-06-27 18:12:21,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949417400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:21,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:21,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:21,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942656955] [2024-06-27 18:12:21,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:21,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:21,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:21,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:21,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:21,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:21,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 291 transitions, 3359 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:21,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:21,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:21,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:22,163 INFO L124 PetriNetUnfolderBase]: 1574/3196 cut-off events. [2024-06-27 18:12:22,164 INFO L125 PetriNetUnfolderBase]: For 181765/181768 co-relation queries the response was YES. [2024-06-27 18:12:22,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18468 conditions, 3196 events. 1574/3196 cut-off events. For 181765/181768 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 22474 event pairs, 376 based on Foata normal form. 2/2966 useless extension candidates. Maximal degree in co-relation 18329. Up to 2544 conditions per place. [2024-06-27 18:12:22,203 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 266 selfloop transitions, 38 changer transitions 0/313 dead transitions. [2024-06-27 18:12:22,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 313 transitions, 4093 flow [2024-06-27 18:12:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:12:22,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 18:12:22,204 INFO L175 Difference]: Start difference. First operand has 314 places, 291 transitions, 3359 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:12:22,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 313 transitions, 4093 flow [2024-06-27 18:12:22,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 313 transitions, 3941 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:22,976 INFO L231 Difference]: Finished difference. Result has 316 places, 292 transitions, 3333 flow [2024-06-27 18:12:22,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3207, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3333, PETRI_PLACES=316, PETRI_TRANSITIONS=292} [2024-06-27 18:12:22,976 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-27 18:12:22,976 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 292 transitions, 3333 flow [2024-06-27 18:12:22,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:22,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:22,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:22,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:12:22,977 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:22,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:22,977 INFO L85 PathProgramCache]: Analyzing trace with hash 483801106, now seen corresponding path program 13 times [2024-06-27 18:12:22,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:22,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591676190] [2024-06-27 18:12:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:22,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:23,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:23,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591676190] [2024-06-27 18:12:23,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591676190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:23,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:23,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:23,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149680424] [2024-06-27 18:12:23,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:23,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:23,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:23,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:23,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:23,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:23,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 292 transitions, 3333 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:23,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:23,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:23,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:24,621 INFO L124 PetriNetUnfolderBase]: 1591/3235 cut-off events. [2024-06-27 18:12:24,622 INFO L125 PetriNetUnfolderBase]: For 185567/185570 co-relation queries the response was YES. [2024-06-27 18:12:24,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18578 conditions, 3235 events. 1591/3235 cut-off events. For 185567/185570 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 22816 event pairs, 385 based on Foata normal form. 2/3003 useless extension candidates. Maximal degree in co-relation 18438. Up to 2600 conditions per place. [2024-06-27 18:12:24,655 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 274 selfloop transitions, 32 changer transitions 0/315 dead transitions. [2024-06-27 18:12:24,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 315 transitions, 4084 flow [2024-06-27 18:12:24,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:24,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:12:24,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 18:12:24,657 INFO L175 Difference]: Start difference. First operand has 316 places, 292 transitions, 3333 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:12:24,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 315 transitions, 4084 flow [2024-06-27 18:12:25,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 315 transitions, 3966 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:25,403 INFO L231 Difference]: Finished difference. Result has 319 places, 294 transitions, 3347 flow [2024-06-27 18:12:25,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3347, PETRI_PLACES=319, PETRI_TRANSITIONS=294} [2024-06-27 18:12:25,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2024-06-27 18:12:25,404 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 294 transitions, 3347 flow [2024-06-27 18:12:25,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:25,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:25,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:25,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:12:25,405 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:25,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:25,405 INFO L85 PathProgramCache]: Analyzing trace with hash 733499000, now seen corresponding path program 14 times [2024-06-27 18:12:25,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:25,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336810333] [2024-06-27 18:12:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:25,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:26,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336810333] [2024-06-27 18:12:26,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336810333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:26,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:26,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:26,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308693410] [2024-06-27 18:12:26,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:26,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:26,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:26,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:26,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:26,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:26,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 294 transitions, 3347 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:26,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:26,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:26,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:27,214 INFO L124 PetriNetUnfolderBase]: 1608/3273 cut-off events. [2024-06-27 18:12:27,215 INFO L125 PetriNetUnfolderBase]: For 189404/189407 co-relation queries the response was YES. [2024-06-27 18:12:27,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18739 conditions, 3273 events. 1608/3273 cut-off events. For 189404/189407 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23158 event pairs, 379 based on Foata normal form. 2/3038 useless extension candidates. Maximal degree in co-relation 18597. Up to 2605 conditions per place. [2024-06-27 18:12:27,253 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 280 selfloop transitions, 31 changer transitions 0/320 dead transitions. [2024-06-27 18:12:27,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 320 transitions, 4113 flow [2024-06-27 18:12:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:12:27,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:12:27,255 INFO L175 Difference]: Start difference. First operand has 319 places, 294 transitions, 3347 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:12:27,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 320 transitions, 4113 flow [2024-06-27 18:12:28,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 320 transitions, 4010 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:12:28,025 INFO L231 Difference]: Finished difference. Result has 322 places, 295 transitions, 3360 flow [2024-06-27 18:12:28,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3360, PETRI_PLACES=322, PETRI_TRANSITIONS=295} [2024-06-27 18:12:28,026 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-27 18:12:28,026 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 295 transitions, 3360 flow [2024-06-27 18:12:28,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:28,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:28,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:28,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:12:28,027 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:28,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:28,027 INFO L85 PathProgramCache]: Analyzing trace with hash 490057216, now seen corresponding path program 15 times [2024-06-27 18:12:28,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:28,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365264806] [2024-06-27 18:12:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:28,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:28,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:28,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365264806] [2024-06-27 18:12:28,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365264806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:28,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:28,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:12:28,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338422361] [2024-06-27 18:12:28,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:28,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:12:28,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:28,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:12:28,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:12:29,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:29,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 295 transitions, 3360 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:29,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:29,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:29,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:29,857 INFO L124 PetriNetUnfolderBase]: 1609/3286 cut-off events. [2024-06-27 18:12:29,858 INFO L125 PetriNetUnfolderBase]: For 180533/180536 co-relation queries the response was YES. [2024-06-27 18:12:29,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18368 conditions, 3286 events. 1609/3286 cut-off events. For 180533/180536 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23334 event pairs, 393 based on Foata normal form. 2/3049 useless extension candidates. Maximal degree in co-relation 18225. Up to 2624 conditions per place. [2024-06-27 18:12:29,896 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 273 selfloop transitions, 35 changer transitions 0/317 dead transitions. [2024-06-27 18:12:29,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 317 transitions, 4108 flow [2024-06-27 18:12:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:12:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:12:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:12:29,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:12:29,897 INFO L175 Difference]: Start difference. First operand has 322 places, 295 transitions, 3360 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:12:29,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 317 transitions, 4108 flow [2024-06-27 18:12:30,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 317 transitions, 4002 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:30,734 INFO L231 Difference]: Finished difference. Result has 324 places, 296 transitions, 3380 flow [2024-06-27 18:12:30,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3380, PETRI_PLACES=324, PETRI_TRANSITIONS=296} [2024-06-27 18:12:30,735 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-27 18:12:30,735 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 296 transitions, 3380 flow [2024-06-27 18:12:30,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:30,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:30,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:30,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:12:30,735 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:30,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:30,736 INFO L85 PathProgramCache]: Analyzing trace with hash 490064160, now seen corresponding path program 10 times [2024-06-27 18:12:30,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:30,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478939841] [2024-06-27 18:12:30,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:30,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:32,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478939841] [2024-06-27 18:12:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478939841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:32,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:32,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:32,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215209430] [2024-06-27 18:12:32,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:32,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:32,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:32,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:32,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 296 transitions, 3380 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:32,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:32,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:32,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:33,483 INFO L124 PetriNetUnfolderBase]: 1616/3296 cut-off events. [2024-06-27 18:12:33,483 INFO L125 PetriNetUnfolderBase]: For 175545/175548 co-relation queries the response was YES. [2024-06-27 18:12:33,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18236 conditions, 3296 events. 1616/3296 cut-off events. For 175545/175548 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 23414 event pairs, 393 based on Foata normal form. 1/3055 useless extension candidates. Maximal degree in co-relation 18092. Up to 2630 conditions per place. [2024-06-27 18:12:33,524 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 267 selfloop transitions, 41 changer transitions 0/317 dead transitions. [2024-06-27 18:12:33,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 317 transitions, 4130 flow [2024-06-27 18:12:33,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:12:33,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:12:33,525 INFO L175 Difference]: Start difference. First operand has 324 places, 296 transitions, 3380 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:12:33,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 317 transitions, 4130 flow [2024-06-27 18:12:34,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 317 transitions, 4014 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 18:12:34,320 INFO L231 Difference]: Finished difference. Result has 327 places, 298 transitions, 3413 flow [2024-06-27 18:12:34,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3413, PETRI_PLACES=327, PETRI_TRANSITIONS=298} [2024-06-27 18:12:34,320 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-27 18:12:34,321 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 298 transitions, 3413 flow [2024-06-27 18:12:34,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:34,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:34,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:34,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:12:34,321 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:34,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:34,321 INFO L85 PathProgramCache]: Analyzing trace with hash 961824044, now seen corresponding path program 6 times [2024-06-27 18:12:34,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:34,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729265652] [2024-06-27 18:12:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:34,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:35,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:35,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729265652] [2024-06-27 18:12:35,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729265652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:35,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:35,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:35,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386124178] [2024-06-27 18:12:35,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:35,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:35,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:35,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:35,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:35,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:35,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 298 transitions, 3413 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:35,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:35,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:35,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:36,320 INFO L124 PetriNetUnfolderBase]: 1633/3336 cut-off events. [2024-06-27 18:12:36,320 INFO L125 PetriNetUnfolderBase]: For 181343/181346 co-relation queries the response was YES. [2024-06-27 18:12:36,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18258 conditions, 3336 events. 1633/3336 cut-off events. For 181343/181346 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23803 event pairs, 396 based on Foata normal form. 2/3094 useless extension candidates. Maximal degree in co-relation 18113. Up to 2630 conditions per place. [2024-06-27 18:12:36,359 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 269 selfloop transitions, 44 changer transitions 0/322 dead transitions. [2024-06-27 18:12:36,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 322 transitions, 4161 flow [2024-06-27 18:12:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:36,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:12:36,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:12:36,361 INFO L175 Difference]: Start difference. First operand has 327 places, 298 transitions, 3413 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:12:36,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 322 transitions, 4161 flow [2024-06-27 18:12:37,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 322 transitions, 4038 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 18:12:37,156 INFO L231 Difference]: Finished difference. Result has 329 places, 299 transitions, 3416 flow [2024-06-27 18:12:37,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3290, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3416, PETRI_PLACES=329, PETRI_TRANSITIONS=299} [2024-06-27 18:12:37,156 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-27 18:12:37,157 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 299 transitions, 3416 flow [2024-06-27 18:12:37,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:37,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:37,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:37,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:12:37,157 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:37,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:37,158 INFO L85 PathProgramCache]: Analyzing trace with hash 740170324, now seen corresponding path program 11 times [2024-06-27 18:12:37,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:37,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965104584] [2024-06-27 18:12:37,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:37,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:38,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:38,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965104584] [2024-06-27 18:12:38,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965104584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:38,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:38,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:38,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435515921] [2024-06-27 18:12:38,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:38,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:38,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:38,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:38,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:38,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:38,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 299 transitions, 3416 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:38,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:38,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:38,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:39,495 INFO L124 PetriNetUnfolderBase]: 1631/3333 cut-off events. [2024-06-27 18:12:39,496 INFO L125 PetriNetUnfolderBase]: For 173442/173445 co-relation queries the response was YES. [2024-06-27 18:12:39,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18110 conditions, 3333 events. 1631/3333 cut-off events. For 173442/173445 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23789 event pairs, 396 based on Foata normal form. 1/3089 useless extension candidates. Maximal degree in co-relation 17964. Up to 2658 conditions per place. [2024-06-27 18:12:39,535 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 267 selfloop transitions, 42 changer transitions 0/318 dead transitions. [2024-06-27 18:12:39,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 318 transitions, 4110 flow [2024-06-27 18:12:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 18:12:39,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 18:12:39,536 INFO L175 Difference]: Start difference. First operand has 329 places, 299 transitions, 3416 flow. Second operand 11 states and 177 transitions. [2024-06-27 18:12:39,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 318 transitions, 4110 flow [2024-06-27 18:12:40,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 318 transitions, 3955 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 18:12:40,286 INFO L231 Difference]: Finished difference. Result has 331 places, 299 transitions, 3350 flow [2024-06-27 18:12:40,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3261, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3350, PETRI_PLACES=331, PETRI_TRANSITIONS=299} [2024-06-27 18:12:40,287 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-27 18:12:40,287 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 299 transitions, 3350 flow [2024-06-27 18:12:40,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:40,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:40,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:40,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:12:40,288 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:40,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:40,288 INFO L85 PathProgramCache]: Analyzing trace with hash 740178694, now seen corresponding path program 12 times [2024-06-27 18:12:40,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:40,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711017050] [2024-06-27 18:12:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:40,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:41,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:41,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711017050] [2024-06-27 18:12:41,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711017050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:41,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:41,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:41,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447686820] [2024-06-27 18:12:41,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:41,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:41,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:41,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:41,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:41,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:41,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 299 transitions, 3350 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:41,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:41,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:41,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:42,359 INFO L124 PetriNetUnfolderBase]: 1629/3329 cut-off events. [2024-06-27 18:12:42,359 INFO L125 PetriNetUnfolderBase]: For 168106/168109 co-relation queries the response was YES. [2024-06-27 18:12:42,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17715 conditions, 3329 events. 1629/3329 cut-off events. For 168106/168109 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23761 event pairs, 403 based on Foata normal form. 1/3085 useless extension candidates. Maximal degree in co-relation 17568. Up to 2605 conditions per place. [2024-06-27 18:12:42,397 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 258 selfloop transitions, 51 changer transitions 0/318 dead transitions. [2024-06-27 18:12:42,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 318 transitions, 4044 flow [2024-06-27 18:12:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:12:42,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 18:12:42,399 INFO L175 Difference]: Start difference. First operand has 331 places, 299 transitions, 3350 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:12:42,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 318 transitions, 4044 flow [2024-06-27 18:12:43,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 318 transitions, 3900 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-27 18:12:43,102 INFO L231 Difference]: Finished difference. Result has 332 places, 299 transitions, 3313 flow [2024-06-27 18:12:43,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3206, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3313, PETRI_PLACES=332, PETRI_TRANSITIONS=299} [2024-06-27 18:12:43,102 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-27 18:12:43,102 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 299 transitions, 3313 flow [2024-06-27 18:12:43,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:43,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:43,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:43,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:12:43,103 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:43,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:43,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2075548520, now seen corresponding path program 7 times [2024-06-27 18:12:43,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:43,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842859177] [2024-06-27 18:12:43,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:43,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:44,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:44,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842859177] [2024-06-27 18:12:44,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842859177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:44,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:44,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:44,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271065888] [2024-06-27 18:12:44,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:44,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:44,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:44,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:44,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:44,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:44,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 299 transitions, 3313 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:44,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:44,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:44,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:45,332 INFO L124 PetriNetUnfolderBase]: 1666/3410 cut-off events. [2024-06-27 18:12:45,332 INFO L125 PetriNetUnfolderBase]: For 190647/190647 co-relation queries the response was YES. [2024-06-27 18:12:45,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18545 conditions, 3410 events. 1666/3410 cut-off events. For 190647/190647 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 24544 event pairs, 406 based on Foata normal form. 2/3168 useless extension candidates. Maximal degree in co-relation 18397. Up to 2736 conditions per place. [2024-06-27 18:12:45,372 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 303 selfloop transitions, 21 changer transitions 0/333 dead transitions. [2024-06-27 18:12:45,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 333 transitions, 4380 flow [2024-06-27 18:12:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:12:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:12:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-27 18:12:45,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346846846846847 [2024-06-27 18:12:45,373 INFO L175 Difference]: Start difference. First operand has 332 places, 299 transitions, 3313 flow. Second operand 12 states and 193 transitions. [2024-06-27 18:12:45,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 333 transitions, 4380 flow [2024-06-27 18:12:46,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 333 transitions, 4241 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 18:12:46,255 INFO L231 Difference]: Finished difference. Result has 334 places, 303 transitions, 3321 flow [2024-06-27 18:12:46,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3174, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3321, PETRI_PLACES=334, PETRI_TRANSITIONS=303} [2024-06-27 18:12:46,255 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-27 18:12:46,256 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 303 transitions, 3321 flow [2024-06-27 18:12:46,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:46,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:46,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:46,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:12:46,256 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:46,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:46,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1550264168, now seen corresponding path program 8 times [2024-06-27 18:12:46,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:46,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652054085] [2024-06-27 18:12:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:46,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:47,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:47,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652054085] [2024-06-27 18:12:47,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652054085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:47,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:47,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:47,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206186963] [2024-06-27 18:12:47,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:47,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:47,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:47,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:47,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:47,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:47,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 303 transitions, 3321 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:47,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:47,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:47,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:48,381 INFO L124 PetriNetUnfolderBase]: 1695/3471 cut-off events. [2024-06-27 18:12:48,381 INFO L125 PetriNetUnfolderBase]: For 196199/196199 co-relation queries the response was YES. [2024-06-27 18:12:48,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18946 conditions, 3471 events. 1695/3471 cut-off events. For 196199/196199 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 25032 event pairs, 412 based on Foata normal form. 2/3222 useless extension candidates. Maximal degree in co-relation 18796. Up to 2833 conditions per place. [2024-06-27 18:12:48,423 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 301 selfloop transitions, 23 changer transitions 0/333 dead transitions. [2024-06-27 18:12:48,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 333 transitions, 4151 flow [2024-06-27 18:12:48,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:12:48,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:12:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-27 18:12:48,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-27 18:12:48,424 INFO L175 Difference]: Start difference. First operand has 334 places, 303 transitions, 3321 flow. Second operand 12 states and 189 transitions. [2024-06-27 18:12:48,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 333 transitions, 4151 flow [2024-06-27 18:12:49,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 333 transitions, 4068 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 18:12:49,328 INFO L231 Difference]: Finished difference. Result has 341 places, 308 transitions, 3379 flow [2024-06-27 18:12:49,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3379, PETRI_PLACES=341, PETRI_TRANSITIONS=308} [2024-06-27 18:12:49,329 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-27 18:12:49,330 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 308 transitions, 3379 flow [2024-06-27 18:12:49,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:49,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:49,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:49,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:12:49,330 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:49,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:49,331 INFO L85 PathProgramCache]: Analyzing trace with hash 740179004, now seen corresponding path program 9 times [2024-06-27 18:12:49,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:49,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271298975] [2024-06-27 18:12:49,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:49,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:50,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:50,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271298975] [2024-06-27 18:12:50,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271298975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:50,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:50,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:50,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702262] [2024-06-27 18:12:50,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:50,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:50,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:50,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:50,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:50,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:50,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 308 transitions, 3379 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:50,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:50,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:50,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:51,424 INFO L124 PetriNetUnfolderBase]: 1766/3656 cut-off events. [2024-06-27 18:12:51,425 INFO L125 PetriNetUnfolderBase]: For 245031/245034 co-relation queries the response was YES. [2024-06-27 18:12:51,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19669 conditions, 3656 events. 1766/3656 cut-off events. For 245031/245034 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26937 event pairs, 451 based on Foata normal form. 10/3401 useless extension candidates. Maximal degree in co-relation 19516. Up to 2783 conditions per place. [2024-06-27 18:12:51,484 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 287 selfloop transitions, 39 changer transitions 0/335 dead transitions. [2024-06-27 18:12:51,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 335 transitions, 4211 flow [2024-06-27 18:12:51,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:12:51,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:12:51,486 INFO L175 Difference]: Start difference. First operand has 341 places, 308 transitions, 3379 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:12:51,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 335 transitions, 4211 flow [2024-06-27 18:12:52,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 335 transitions, 4157 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:12:52,696 INFO L231 Difference]: Finished difference. Result has 345 places, 309 transitions, 3446 flow [2024-06-27 18:12:52,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3325, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3446, PETRI_PLACES=345, PETRI_TRANSITIONS=309} [2024-06-27 18:12:52,696 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-27 18:12:52,696 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 309 transitions, 3446 flow [2024-06-27 18:12:52,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:52,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:52,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:52,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:12:52,697 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:52,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash 64652850, now seen corresponding path program 13 times [2024-06-27 18:12:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:52,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852233908] [2024-06-27 18:12:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:52,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:54,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:54,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852233908] [2024-06-27 18:12:54,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852233908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:54,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:54,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:54,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25415106] [2024-06-27 18:12:54,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:54,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:54,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:54,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 309 transitions, 3446 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:54,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:54,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:54,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:55,213 INFO L124 PetriNetUnfolderBase]: 1773/3665 cut-off events. [2024-06-27 18:12:55,213 INFO L125 PetriNetUnfolderBase]: For 197898/197901 co-relation queries the response was YES. [2024-06-27 18:12:55,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19755 conditions, 3665 events. 1773/3665 cut-off events. For 197898/197901 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 26972 event pairs, 461 based on Foata normal form. 1/3397 useless extension candidates. Maximal degree in co-relation 19601. Up to 2686 conditions per place. [2024-06-27 18:12:55,265 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 225 selfloop transitions, 97 changer transitions 0/331 dead transitions. [2024-06-27 18:12:55,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 331 transitions, 4235 flow [2024-06-27 18:12:55,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:12:55,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 18:12:55,266 INFO L175 Difference]: Start difference. First operand has 345 places, 309 transitions, 3446 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:12:55,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 331 transitions, 4235 flow [2024-06-27 18:12:56,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 331 transitions, 4140 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 18:12:56,206 INFO L231 Difference]: Finished difference. Result has 348 places, 312 transitions, 3635 flow [2024-06-27 18:12:56,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3351, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3635, PETRI_PLACES=348, PETRI_TRANSITIONS=312} [2024-06-27 18:12:56,206 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 307 predicate places. [2024-06-27 18:12:56,206 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 312 transitions, 3635 flow [2024-06-27 18:12:56,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:56,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:56,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:56,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:12:56,207 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:56,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:56,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1207668598, now seen corresponding path program 14 times [2024-06-27 18:12:56,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:56,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127925008] [2024-06-27 18:12:56,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:56,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:12:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:12:57,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:12:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127925008] [2024-06-27 18:12:57,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127925008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:12:57,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:12:57,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:12:57,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925150925] [2024-06-27 18:12:57,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:12:57,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:12:57,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:12:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:12:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:12:57,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:12:57,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 312 transitions, 3635 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:57,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:12:57,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:12:57,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:12:58,731 INFO L124 PetriNetUnfolderBase]: 1771/3661 cut-off events. [2024-06-27 18:12:58,731 INFO L125 PetriNetUnfolderBase]: For 193674/193674 co-relation queries the response was YES. [2024-06-27 18:12:58,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19749 conditions, 3661 events. 1771/3661 cut-off events. For 193674/193674 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 26960 event pairs, 457 based on Foata normal form. 1/3396 useless extension candidates. Maximal degree in co-relation 19593. Up to 3020 conditions per place. [2024-06-27 18:12:58,777 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 304 selfloop transitions, 18 changer transitions 0/331 dead transitions. [2024-06-27 18:12:58,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 331 transitions, 4355 flow [2024-06-27 18:12:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:12:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:12:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 18:12:58,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-27 18:12:58,778 INFO L175 Difference]: Start difference. First operand has 348 places, 312 transitions, 3635 flow. Second operand 11 states and 169 transitions. [2024-06-27 18:12:58,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 331 transitions, 4355 flow [2024-06-27 18:12:59,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 331 transitions, 4096 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 18:12:59,783 INFO L231 Difference]: Finished difference. Result has 352 places, 312 transitions, 3417 flow [2024-06-27 18:12:59,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3417, PETRI_PLACES=352, PETRI_TRANSITIONS=312} [2024-06-27 18:12:59,784 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-27 18:12:59,784 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 312 transitions, 3417 flow [2024-06-27 18:12:59,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:12:59,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:12:59,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:12:59,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:12:59,784 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:12:59,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:12:59,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1207965578, now seen corresponding path program 10 times [2024-06-27 18:12:59,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:12:59,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16343019] [2024-06-27 18:12:59,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:12:59,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:12:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:01,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:01,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16343019] [2024-06-27 18:13:01,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16343019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:01,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:01,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:01,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653709708] [2024-06-27 18:13:01,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:01,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:01,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:01,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:01,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:01,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:01,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 312 transitions, 3417 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:01,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:01,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:01,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:02,295 INFO L124 PetriNetUnfolderBase]: 1768/3657 cut-off events. [2024-06-27 18:13:02,295 INFO L125 PetriNetUnfolderBase]: For 189301/189301 co-relation queries the response was YES. [2024-06-27 18:13:02,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19098 conditions, 3657 events. 1768/3657 cut-off events. For 189301/189301 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 26926 event pairs, 446 based on Foata normal form. 2/3393 useless extension candidates. Maximal degree in co-relation 18941. Up to 2991 conditions per place. [2024-06-27 18:13:02,340 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 309 selfloop transitions, 19 changer transitions 0/337 dead transitions. [2024-06-27 18:13:02,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 337 transitions, 4171 flow [2024-06-27 18:13:02,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:13:02,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:13:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-27 18:13:02,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 18:13:02,341 INFO L175 Difference]: Start difference. First operand has 352 places, 312 transitions, 3417 flow. Second operand 12 states and 186 transitions. [2024-06-27 18:13:02,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 337 transitions, 4171 flow [2024-06-27 18:13:03,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 337 transitions, 4099 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:13:03,053 INFO L231 Difference]: Finished difference. Result has 355 places, 312 transitions, 3387 flow [2024-06-27 18:13:03,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3345, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3387, PETRI_PLACES=355, PETRI_TRANSITIONS=312} [2024-06-27 18:13:03,053 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 314 predicate places. [2024-06-27 18:13:03,053 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 312 transitions, 3387 flow [2024-06-27 18:13:03,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:03,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:03,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:03,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:13:03,054 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:03,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:03,054 INFO L85 PathProgramCache]: Analyzing trace with hash 64892170, now seen corresponding path program 11 times [2024-06-27 18:13:03,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:03,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492191832] [2024-06-27 18:13:03,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:03,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:04,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:04,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492191832] [2024-06-27 18:13:04,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492191832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:04,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:04,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:04,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792969252] [2024-06-27 18:13:04,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:04,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:04,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:04,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 312 transitions, 3387 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:04,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:04,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:04,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:05,092 INFO L124 PetriNetUnfolderBase]: 1785/3698 cut-off events. [2024-06-27 18:13:05,092 INFO L125 PetriNetUnfolderBase]: For 193206/193209 co-relation queries the response was YES. [2024-06-27 18:13:05,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19302 conditions, 3698 events. 1785/3698 cut-off events. For 193206/193209 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 27360 event pairs, 450 based on Foata normal form. 2/3427 useless extension candidates. Maximal degree in co-relation 19144. Up to 2644 conditions per place. [2024-06-27 18:13:05,139 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 226 selfloop transitions, 99 changer transitions 0/334 dead transitions. [2024-06-27 18:13:05,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 334 transitions, 4157 flow [2024-06-27 18:13:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:05,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:05,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:13:05,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 18:13:05,140 INFO L175 Difference]: Start difference. First operand has 355 places, 312 transitions, 3387 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:13:05,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 334 transitions, 4157 flow [2024-06-27 18:13:06,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 334 transitions, 4083 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-27 18:13:06,136 INFO L231 Difference]: Finished difference. Result has 351 places, 313 transitions, 3555 flow [2024-06-27 18:13:06,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3555, PETRI_PLACES=351, PETRI_TRANSITIONS=313} [2024-06-27 18:13:06,137 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 310 predicate places. [2024-06-27 18:13:06,137 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 313 transitions, 3555 flow [2024-06-27 18:13:06,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:06,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:06,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:06,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:13:06,137 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:06,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:06,138 INFO L85 PathProgramCache]: Analyzing trace with hash 961815364, now seen corresponding path program 15 times [2024-06-27 18:13:06,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:06,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106113047] [2024-06-27 18:13:06,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:06,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:07,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:07,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106113047] [2024-06-27 18:13:07,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106113047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:07,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:07,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:07,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059836761] [2024-06-27 18:13:07,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:07,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:07,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:07,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:07,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:07,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:07,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 313 transitions, 3555 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:07,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:07,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:07,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:08,889 INFO L124 PetriNetUnfolderBase]: 1792/3707 cut-off events. [2024-06-27 18:13:08,890 INFO L125 PetriNetUnfolderBase]: For 191222/191225 co-relation queries the response was YES. [2024-06-27 18:13:08,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19710 conditions, 3707 events. 1792/3707 cut-off events. For 191222/191225 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 27399 event pairs, 463 based on Foata normal form. 1/3434 useless extension candidates. Maximal degree in co-relation 19552. Up to 2910 conditions per place. [2024-06-27 18:13:08,937 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 273 selfloop transitions, 52 changer transitions 0/334 dead transitions. [2024-06-27 18:13:08,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 334 transitions, 4337 flow [2024-06-27 18:13:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:08,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:08,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:13:08,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 18:13:08,938 INFO L175 Difference]: Start difference. First operand has 351 places, 313 transitions, 3555 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:13:08,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 334 transitions, 4337 flow [2024-06-27 18:13:10,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 334 transitions, 4105 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:13:10,037 INFO L231 Difference]: Finished difference. Result has 354 places, 315 transitions, 3492 flow [2024-06-27 18:13:10,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3323, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3492, PETRI_PLACES=354, PETRI_TRANSITIONS=315} [2024-06-27 18:13:10,038 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-27 18:13:10,038 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 315 transitions, 3492 flow [2024-06-27 18:13:10,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:10,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:10,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:10,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:13:10,039 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:10,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash 397335612, now seen corresponding path program 12 times [2024-06-27 18:13:10,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:10,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954697507] [2024-06-27 18:13:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:10,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:11,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:11,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954697507] [2024-06-27 18:13:11,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954697507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:11,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:11,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:11,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275610058] [2024-06-27 18:13:11,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:11,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:11,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:11,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:11,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:11,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:11,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 315 transitions, 3492 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:11,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:11,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:11,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:12,354 INFO L124 PetriNetUnfolderBase]: 1809/3762 cut-off events. [2024-06-27 18:13:12,354 INFO L125 PetriNetUnfolderBase]: For 200410/200410 co-relation queries the response was YES. [2024-06-27 18:13:12,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19686 conditions, 3762 events. 1809/3762 cut-off events. For 200410/200410 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 27884 event pairs, 436 based on Foata normal form. 2/3501 useless extension candidates. Maximal degree in co-relation 19527. Up to 2888 conditions per place. [2024-06-27 18:13:12,400 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 314 selfloop transitions, 26 changer transitions 0/349 dead transitions. [2024-06-27 18:13:12,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 349 transitions, 4338 flow [2024-06-27 18:13:12,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:13:12,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:13:12,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-27 18:13:12,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:13:12,402 INFO L175 Difference]: Start difference. First operand has 354 places, 315 transitions, 3492 flow. Second operand 12 states and 196 transitions. [2024-06-27 18:13:12,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 349 transitions, 4338 flow [2024-06-27 18:13:13,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 349 transitions, 4204 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:13:13,287 INFO L231 Difference]: Finished difference. Result has 359 places, 316 transitions, 3456 flow [2024-06-27 18:13:13,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3456, PETRI_PLACES=359, PETRI_TRANSITIONS=316} [2024-06-27 18:13:13,288 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-27 18:13:13,288 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 316 transitions, 3456 flow [2024-06-27 18:13:13,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:13,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:13,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:13,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:13:13,289 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:13,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:13,289 INFO L85 PathProgramCache]: Analyzing trace with hash 179105174, now seen corresponding path program 16 times [2024-06-27 18:13:13,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:13,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672079089] [2024-06-27 18:13:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:13,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:15,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:15,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672079089] [2024-06-27 18:13:15,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672079089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:15,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:15,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:15,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492104261] [2024-06-27 18:13:15,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:15,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:15,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:15,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:15,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:15,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:15,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 316 transitions, 3456 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:15,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:15,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:15,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:16,697 INFO L124 PetriNetUnfolderBase]: 1807/3744 cut-off events. [2024-06-27 18:13:16,697 INFO L125 PetriNetUnfolderBase]: For 190085/190088 co-relation queries the response was YES. [2024-06-27 18:13:16,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19475 conditions, 3744 events. 1807/3744 cut-off events. For 190085/190088 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 27798 event pairs, 466 based on Foata normal form. 1/3468 useless extension candidates. Maximal degree in co-relation 19315. Up to 2938 conditions per place. [2024-06-27 18:13:16,746 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 273 selfloop transitions, 53 changer transitions 0/335 dead transitions. [2024-06-27 18:13:16,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 335 transitions, 4184 flow [2024-06-27 18:13:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:13:16,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 18:13:16,748 INFO L175 Difference]: Start difference. First operand has 359 places, 316 transitions, 3456 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:13:16,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 335 transitions, 4184 flow [2024-06-27 18:13:17,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 335 transitions, 4058 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-27 18:13:17,839 INFO L231 Difference]: Finished difference. Result has 360 places, 316 transitions, 3441 flow [2024-06-27 18:13:17,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3330, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3441, PETRI_PLACES=360, PETRI_TRANSITIONS=316} [2024-06-27 18:13:17,839 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 319 predicate places. [2024-06-27 18:13:17,839 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 316 transitions, 3441 flow [2024-06-27 18:13:17,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:17,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:17,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:17,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:13:17,840 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:17,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash 970155914, now seen corresponding path program 13 times [2024-06-27 18:13:17,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:17,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184337503] [2024-06-27 18:13:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:17,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:18,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:18,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:18,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184337503] [2024-06-27 18:13:18,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184337503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:18,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:18,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:18,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800034744] [2024-06-27 18:13:18,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:18,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:18,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:18,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:18,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:19,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:19,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 316 transitions, 3441 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:19,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:19,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:19,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:20,121 INFO L124 PetriNetUnfolderBase]: 1830/3792 cut-off events. [2024-06-27 18:13:20,122 INFO L125 PetriNetUnfolderBase]: For 199387/199390 co-relation queries the response was YES. [2024-06-27 18:13:20,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19625 conditions, 3792 events. 1830/3792 cut-off events. For 199387/199390 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 28238 event pairs, 479 based on Foata normal form. 2/3515 useless extension candidates. Maximal degree in co-relation 19464. Up to 2967 conditions per place. [2024-06-27 18:13:20,171 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 279 selfloop transitions, 54 changer transitions 0/342 dead transitions. [2024-06-27 18:13:20,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 342 transitions, 4260 flow [2024-06-27 18:13:20,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:13:20,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:13:20,172 INFO L175 Difference]: Start difference. First operand has 360 places, 316 transitions, 3441 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:13:20,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 342 transitions, 4260 flow [2024-06-27 18:13:21,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 342 transitions, 4136 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 18:13:21,194 INFO L231 Difference]: Finished difference. Result has 361 places, 319 transitions, 3494 flow [2024-06-27 18:13:21,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3317, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3494, PETRI_PLACES=361, PETRI_TRANSITIONS=319} [2024-06-27 18:13:21,195 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-27 18:13:21,195 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 319 transitions, 3494 flow [2024-06-27 18:13:21,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:21,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:21,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:21,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:13:21,196 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:21,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash 970166144, now seen corresponding path program 14 times [2024-06-27 18:13:21,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:21,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374046287] [2024-06-27 18:13:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:21,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:22,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:22,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374046287] [2024-06-27 18:13:22,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374046287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:22,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:22,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:22,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524281118] [2024-06-27 18:13:22,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:22,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:22,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:22,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:22,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:22,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:22,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 319 transitions, 3494 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:22,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:22,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:22,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:23,546 INFO L124 PetriNetUnfolderBase]: 1931/4030 cut-off events. [2024-06-27 18:13:23,546 INFO L125 PetriNetUnfolderBase]: For 276809/276812 co-relation queries the response was YES. [2024-06-27 18:13:23,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22253 conditions, 4030 events. 1931/4030 cut-off events. For 276809/276812 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 30518 event pairs, 525 based on Foata normal form. 2/3747 useless extension candidates. Maximal degree in co-relation 22091. Up to 2794 conditions per place. [2024-06-27 18:13:23,604 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 286 selfloop transitions, 58 changer transitions 0/353 dead transitions. [2024-06-27 18:13:23,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 353 transitions, 4690 flow [2024-06-27 18:13:23,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:23,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 18:13:23,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-27 18:13:23,605 INFO L175 Difference]: Start difference. First operand has 361 places, 319 transitions, 3494 flow. Second operand 11 states and 194 transitions. [2024-06-27 18:13:23,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 353 transitions, 4690 flow [2024-06-27 18:13:24,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 353 transitions, 4568 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 18:13:24,982 INFO L231 Difference]: Finished difference. Result has 366 places, 321 transitions, 3582 flow [2024-06-27 18:13:24,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3372, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3582, PETRI_PLACES=366, PETRI_TRANSITIONS=321} [2024-06-27 18:13:24,983 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 325 predicate places. [2024-06-27 18:13:24,983 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 321 transitions, 3582 flow [2024-06-27 18:13:24,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:24,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:24,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:24,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:13:24,983 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:24,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:24,984 INFO L85 PathProgramCache]: Analyzing trace with hash 64891860, now seen corresponding path program 17 times [2024-06-27 18:13:24,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:24,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381004788] [2024-06-27 18:13:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:24,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:26,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:26,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381004788] [2024-06-27 18:13:26,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381004788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:26,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:26,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:26,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942470899] [2024-06-27 18:13:26,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:26,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:26,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:26,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:26,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:26,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:26,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 321 transitions, 3582 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:26,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:26,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:26,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:27,345 INFO L124 PetriNetUnfolderBase]: 1929/4019 cut-off events. [2024-06-27 18:13:27,345 INFO L125 PetriNetUnfolderBase]: For 264895/264898 co-relation queries the response was YES. [2024-06-27 18:13:27,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21977 conditions, 4019 events. 1929/4019 cut-off events. For 264895/264898 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 30497 event pairs, 535 based on Foata normal form. 1/3728 useless extension candidates. Maximal degree in co-relation 21814. Up to 2923 conditions per place. [2024-06-27 18:13:27,404 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 226 selfloop transitions, 106 changer transitions 0/341 dead transitions. [2024-06-27 18:13:27,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 341 transitions, 4560 flow [2024-06-27 18:13:27,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:27,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:27,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:13:27,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:13:27,405 INFO L175 Difference]: Start difference. First operand has 366 places, 321 transitions, 3582 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:13:27,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 341 transitions, 4560 flow [2024-06-27 18:13:28,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 341 transitions, 4376 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-27 18:13:28,769 INFO L231 Difference]: Finished difference. Result has 369 places, 321 transitions, 3615 flow [2024-06-27 18:13:28,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3615, PETRI_PLACES=369, PETRI_TRANSITIONS=321} [2024-06-27 18:13:28,770 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-27 18:13:28,770 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 321 transitions, 3615 flow [2024-06-27 18:13:28,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:28,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:28,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:28,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:13:28,770 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:28,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash 969858934, now seen corresponding path program 18 times [2024-06-27 18:13:28,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:28,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946364006] [2024-06-27 18:13:28,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:28,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:30,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:30,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946364006] [2024-06-27 18:13:30,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946364006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:30,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:30,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:30,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297361014] [2024-06-27 18:13:30,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:30,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:30,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:30,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:30,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:30,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:30,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 321 transitions, 3615 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:30,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:30,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:30,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:31,640 INFO L124 PetriNetUnfolderBase]: 1927/4015 cut-off events. [2024-06-27 18:13:31,640 INFO L125 PetriNetUnfolderBase]: For 257096/257099 co-relation queries the response was YES. [2024-06-27 18:13:31,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21624 conditions, 4015 events. 1927/4015 cut-off events. For 257096/257099 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 30443 event pairs, 548 based on Foata normal form. 1/3726 useless extension candidates. Maximal degree in co-relation 21460. Up to 3167 conditions per place. [2024-06-27 18:13:31,692 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 276 selfloop transitions, 55 changer transitions 0/340 dead transitions. [2024-06-27 18:13:31,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 340 transitions, 4353 flow [2024-06-27 18:13:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:13:31,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 18:13:31,693 INFO L175 Difference]: Start difference. First operand has 369 places, 321 transitions, 3615 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:13:31,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 340 transitions, 4353 flow [2024-06-27 18:13:32,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 340 transitions, 4038 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-06-27 18:13:32,863 INFO L231 Difference]: Finished difference. Result has 368 places, 321 transitions, 3415 flow [2024-06-27 18:13:32,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3300, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3415, PETRI_PLACES=368, PETRI_TRANSITIONS=321} [2024-06-27 18:13:32,863 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 18:13:32,864 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 321 transitions, 3415 flow [2024-06-27 18:13:32,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:32,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:32,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:32,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:13:32,864 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:32,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:32,865 INFO L85 PathProgramCache]: Analyzing trace with hash 969867614, now seen corresponding path program 15 times [2024-06-27 18:13:32,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:32,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061097819] [2024-06-27 18:13:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:32,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:33,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:33,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061097819] [2024-06-27 18:13:33,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061097819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:33,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:33,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:33,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514066697] [2024-06-27 18:13:33,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:33,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:33,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:33,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:33,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:34,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:34,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 321 transitions, 3415 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:34,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:34,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:34,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:34,953 INFO L124 PetriNetUnfolderBase]: 1924/4011 cut-off events. [2024-06-27 18:13:34,954 INFO L125 PetriNetUnfolderBase]: For 252727/252730 co-relation queries the response was YES. [2024-06-27 18:13:34,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21040 conditions, 4011 events. 1924/4011 cut-off events. For 252727/252730 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 30429 event pairs, 537 based on Foata normal form. 2/3723 useless extension candidates. Maximal degree in co-relation 20876. Up to 3176 conditions per place. [2024-06-27 18:13:35,010 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 289 selfloop transitions, 46 changer transitions 0/344 dead transitions. [2024-06-27 18:13:35,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 344 transitions, 4175 flow [2024-06-27 18:13:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:13:35,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:13:35,013 INFO L175 Difference]: Start difference. First operand has 368 places, 321 transitions, 3415 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:13:35,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 344 transitions, 4175 flow [2024-06-27 18:13:36,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 344 transitions, 3967 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-27 18:13:36,311 INFO L231 Difference]: Finished difference. Result has 366 places, 321 transitions, 3303 flow [2024-06-27 18:13:36,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3207, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3303, PETRI_PLACES=366, PETRI_TRANSITIONS=321} [2024-06-27 18:13:36,318 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 325 predicate places. [2024-06-27 18:13:36,319 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 321 transitions, 3303 flow [2024-06-27 18:13:36,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:36,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:36,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:36,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:13:36,322 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:36,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:36,322 INFO L85 PathProgramCache]: Analyzing trace with hash 72927060, now seen corresponding path program 19 times [2024-06-27 18:13:36,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:36,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485863838] [2024-06-27 18:13:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:36,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:38,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:38,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485863838] [2024-06-27 18:13:38,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485863838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:38,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:38,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:38,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745203119] [2024-06-27 18:13:38,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:38,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:38,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:38,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:38,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:38,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 321 transitions, 3303 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:38,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:38,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:38,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:39,437 INFO L124 PetriNetUnfolderBase]: 1922/4008 cut-off events. [2024-06-27 18:13:39,438 INFO L125 PetriNetUnfolderBase]: For 241749/241752 co-relation queries the response was YES. [2024-06-27 18:13:39,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20696 conditions, 4008 events. 1922/4008 cut-off events. For 241749/241752 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 30393 event pairs, 537 based on Foata normal form. 1/3718 useless extension candidates. Maximal degree in co-relation 20532. Up to 2968 conditions per place. [2024-06-27 18:13:39,490 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 237 selfloop transitions, 94 changer transitions 0/340 dead transitions. [2024-06-27 18:13:39,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 340 transitions, 4041 flow [2024-06-27 18:13:39,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:39,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:13:39,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:13:39,492 INFO L175 Difference]: Start difference. First operand has 366 places, 321 transitions, 3303 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:13:39,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 340 transitions, 4041 flow [2024-06-27 18:13:40,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 340 transitions, 3846 flow, removed 38 selfloop flow, removed 11 redundant places. [2024-06-27 18:13:40,814 INFO L231 Difference]: Finished difference. Result has 366 places, 321 transitions, 3301 flow [2024-06-27 18:13:40,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3108, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3301, PETRI_PLACES=366, PETRI_TRANSITIONS=321} [2024-06-27 18:13:40,815 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 325 predicate places. [2024-06-27 18:13:40,815 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 321 transitions, 3301 flow [2024-06-27 18:13:40,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:40,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:40,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:40,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:13:40,816 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:40,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:40,816 INFO L85 PathProgramCache]: Analyzing trace with hash 72935740, now seen corresponding path program 16 times [2024-06-27 18:13:40,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:40,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531431621] [2024-06-27 18:13:40,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:40,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:42,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:42,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531431621] [2024-06-27 18:13:42,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531431621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:42,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:42,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:42,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294144694] [2024-06-27 18:13:42,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:42,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:42,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:42,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:42,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:42,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:42,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 321 transitions, 3301 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:42,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:42,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:42,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:43,148 INFO L124 PetriNetUnfolderBase]: 1939/4047 cut-off events. [2024-06-27 18:13:43,149 INFO L125 PetriNetUnfolderBase]: For 252842/252845 co-relation queries the response was YES. [2024-06-27 18:13:43,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20900 conditions, 4047 events. 1939/4047 cut-off events. For 252842/252845 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 30744 event pairs, 547 based on Foata normal form. 2/3756 useless extension candidates. Maximal degree in co-relation 20735. Up to 2932 conditions per place. [2024-06-27 18:13:43,206 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 236 selfloop transitions, 98 changer transitions 0/343 dead transitions. [2024-06-27 18:13:43,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 343 transitions, 4097 flow [2024-06-27 18:13:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:43,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:13:43,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:13:43,207 INFO L175 Difference]: Start difference. First operand has 366 places, 321 transitions, 3301 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:13:43,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 343 transitions, 4097 flow [2024-06-27 18:13:44,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 343 transitions, 3883 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 18:13:44,452 INFO L231 Difference]: Finished difference. Result has 365 places, 322 transitions, 3335 flow [2024-06-27 18:13:44,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3335, PETRI_PLACES=365, PETRI_TRANSITIONS=322} [2024-06-27 18:13:44,453 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-27 18:13:44,453 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 322 transitions, 3335 flow [2024-06-27 18:13:44,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:44,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:44,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:44,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:13:44,453 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:44,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:44,454 INFO L85 PathProgramCache]: Analyzing trace with hash 64883490, now seen corresponding path program 20 times [2024-06-27 18:13:44,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:44,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454820089] [2024-06-27 18:13:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:44,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:46,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:46,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454820089] [2024-06-27 18:13:46,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454820089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:46,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:46,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:46,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586185817] [2024-06-27 18:13:46,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:46,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:46,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:46,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:46,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:46,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 322 transitions, 3335 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:46,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:46,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:46,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:47,485 INFO L124 PetriNetUnfolderBase]: 1937/4044 cut-off events. [2024-06-27 18:13:47,485 INFO L125 PetriNetUnfolderBase]: For 241968/241971 co-relation queries the response was YES. [2024-06-27 18:13:47,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20796 conditions, 4044 events. 1937/4044 cut-off events. For 241968/241971 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 30766 event pairs, 550 based on Foata normal form. 1/3752 useless extension candidates. Maximal degree in co-relation 20632. Up to 2996 conditions per place. [2024-06-27 18:13:47,532 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 237 selfloop transitions, 95 changer transitions 0/341 dead transitions. [2024-06-27 18:13:47,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 341 transitions, 4075 flow [2024-06-27 18:13:47,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:47,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:13:47,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 18:13:47,533 INFO L175 Difference]: Start difference. First operand has 365 places, 322 transitions, 3335 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:13:47,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 341 transitions, 4075 flow [2024-06-27 18:13:48,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 341 transitions, 3799 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 18:13:48,697 INFO L231 Difference]: Finished difference. Result has 368 places, 322 transitions, 3254 flow [2024-06-27 18:13:48,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3059, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3254, PETRI_PLACES=368, PETRI_TRANSITIONS=322} [2024-06-27 18:13:48,697 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 18:13:48,697 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 322 transitions, 3254 flow [2024-06-27 18:13:48,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:48,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:48,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:48,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:13:48,698 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:48,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:48,698 INFO L85 PathProgramCache]: Analyzing trace with hash 73234270, now seen corresponding path program 17 times [2024-06-27 18:13:48,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:48,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662124468] [2024-06-27 18:13:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:48,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:49,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:49,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662124468] [2024-06-27 18:13:49,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662124468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:49,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:49,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:49,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849904690] [2024-06-27 18:13:49,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:49,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:49,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:49,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:49,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 322 transitions, 3254 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:49,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:49,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:49,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:50,996 INFO L124 PetriNetUnfolderBase]: 1934/4031 cut-off events. [2024-06-27 18:13:50,997 INFO L125 PetriNetUnfolderBase]: For 233422/233425 co-relation queries the response was YES. [2024-06-27 18:13:51,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20114 conditions, 4031 events. 1934/4031 cut-off events. For 233422/233425 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 30634 event pairs, 536 based on Foata normal form. 2/3745 useless extension candidates. Maximal degree in co-relation 19949. Up to 2896 conditions per place. [2024-06-27 18:13:51,050 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 246 selfloop transitions, 92 changer transitions 0/347 dead transitions. [2024-06-27 18:13:51,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 347 transitions, 4026 flow [2024-06-27 18:13:51,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:13:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:13:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:13:51,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 18:13:51,051 INFO L175 Difference]: Start difference. First operand has 368 places, 322 transitions, 3254 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:13:51,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 347 transitions, 4026 flow [2024-06-27 18:13:52,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 347 transitions, 3833 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:13:52,215 INFO L231 Difference]: Finished difference. Result has 369 places, 322 transitions, 3249 flow [2024-06-27 18:13:52,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3061, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3249, PETRI_PLACES=369, PETRI_TRANSITIONS=322} [2024-06-27 18:13:52,216 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-27 18:13:52,216 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 322 transitions, 3249 flow [2024-06-27 18:13:52,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:52,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:52,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:52,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:13:52,217 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:52,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:52,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1651615323, now seen corresponding path program 1 times [2024-06-27 18:13:52,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:52,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509913711] [2024-06-27 18:13:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:52,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:53,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:53,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509913711] [2024-06-27 18:13:53,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509913711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:53,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:53,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:53,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245875753] [2024-06-27 18:13:53,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:53,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:53,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:53,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:53,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:53,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 322 transitions, 3249 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:53,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:53,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:53,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:54,543 INFO L124 PetriNetUnfolderBase]: 1988/4126 cut-off events. [2024-06-27 18:13:54,543 INFO L125 PetriNetUnfolderBase]: For 284426/284426 co-relation queries the response was YES. [2024-06-27 18:13:54,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20667 conditions, 4126 events. 1988/4126 cut-off events. For 284426/284426 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 31451 event pairs, 468 based on Foata normal form. 8/3870 useless extension candidates. Maximal degree in co-relation 20501. Up to 3147 conditions per place. [2024-06-27 18:13:54,591 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 332 selfloop transitions, 25 changer transitions 0/366 dead transitions. [2024-06-27 18:13:54,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 366 transitions, 4159 flow [2024-06-27 18:13:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:13:54,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 18:13:54,593 INFO L175 Difference]: Start difference. First operand has 369 places, 322 transitions, 3249 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:13:54,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 366 transitions, 4159 flow [2024-06-27 18:13:55,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 366 transitions, 3862 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-27 18:13:55,848 INFO L231 Difference]: Finished difference. Result has 369 places, 322 transitions, 3005 flow [2024-06-27 18:13:55,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2952, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3005, PETRI_PLACES=369, PETRI_TRANSITIONS=322} [2024-06-27 18:13:55,848 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-27 18:13:55,848 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 322 transitions, 3005 flow [2024-06-27 18:13:55,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:55,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:55,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:55,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:13:55,849 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:55,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:55,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1574715767, now seen corresponding path program 2 times [2024-06-27 18:13:55,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:55,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138553524] [2024-06-27 18:13:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:55,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:13:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:13:56,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:13:56,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138553524] [2024-06-27 18:13:56,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138553524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:13:56,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:13:56,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:13:56,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031012274] [2024-06-27 18:13:56,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:13:56,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:13:56,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:13:56,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:13:56,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:13:57,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:13:57,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 322 transitions, 3005 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:57,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:13:57,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:13:57,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:13:58,136 INFO L124 PetriNetUnfolderBase]: 1877/3899 cut-off events. [2024-06-27 18:13:58,136 INFO L125 PetriNetUnfolderBase]: For 114837/114837 co-relation queries the response was YES. [2024-06-27 18:13:58,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16857 conditions, 3899 events. 1877/3899 cut-off events. For 114837/114837 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 29319 event pairs, 473 based on Foata normal form. 2/3618 useless extension candidates. Maximal degree in co-relation 16693. Up to 3152 conditions per place. [2024-06-27 18:13:58,183 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 320 selfloop transitions, 25 changer transitions 0/354 dead transitions. [2024-06-27 18:13:58,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 354 transitions, 3839 flow [2024-06-27 18:13:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:13:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:13:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:13:58,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 18:13:58,184 INFO L175 Difference]: Start difference. First operand has 369 places, 322 transitions, 3005 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:13:58,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 354 transitions, 3839 flow [2024-06-27 18:13:58,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 354 transitions, 3790 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:13:58,923 INFO L231 Difference]: Finished difference. Result has 371 places, 323 transitions, 3036 flow [2024-06-27 18:13:58,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3036, PETRI_PLACES=371, PETRI_TRANSITIONS=323} [2024-06-27 18:13:58,924 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-27 18:13:58,924 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 323 transitions, 3036 flow [2024-06-27 18:13:58,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:13:58,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:13:58,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:13:58,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:13:58,924 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:13:58,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:13:58,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1574923157, now seen corresponding path program 3 times [2024-06-27 18:13:58,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:13:58,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167920119] [2024-06-27 18:13:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:13:58,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:13:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:00,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:00,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167920119] [2024-06-27 18:14:00,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167920119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:00,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:00,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:00,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678313457] [2024-06-27 18:14:00,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:00,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:00,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:00,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:00,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:00,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:00,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 323 transitions, 3036 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:00,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:00,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:00,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:01,070 INFO L124 PetriNetUnfolderBase]: 1894/3930 cut-off events. [2024-06-27 18:14:01,070 INFO L125 PetriNetUnfolderBase]: For 117635/117635 co-relation queries the response was YES. [2024-06-27 18:14:01,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17149 conditions, 3930 events. 1894/3930 cut-off events. For 117635/117635 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 29567 event pairs, 473 based on Foata normal form. 2/3650 useless extension candidates. Maximal degree in co-relation 16984. Up to 3131 conditions per place. [2024-06-27 18:14:01,127 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 324 selfloop transitions, 26 changer transitions 0/359 dead transitions. [2024-06-27 18:14:01,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 359 transitions, 3896 flow [2024-06-27 18:14:01,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:01,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:14:01,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 18:14:01,129 INFO L175 Difference]: Start difference. First operand has 371 places, 323 transitions, 3036 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:14:01,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 359 transitions, 3896 flow [2024-06-27 18:14:01,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 359 transitions, 3826 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:14:01,911 INFO L231 Difference]: Finished difference. Result has 373 places, 324 transitions, 3050 flow [2024-06-27 18:14:01,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3050, PETRI_PLACES=373, PETRI_TRANSITIONS=324} [2024-06-27 18:14:01,912 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-27 18:14:01,912 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 324 transitions, 3050 flow [2024-06-27 18:14:01,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:01,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:01,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:01,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:14:01,913 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:01,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:01,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1580429687, now seen corresponding path program 4 times [2024-06-27 18:14:01,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:01,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707471824] [2024-06-27 18:14:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:01,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:02,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:02,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707471824] [2024-06-27 18:14:02,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707471824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:02,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:02,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:02,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101334464] [2024-06-27 18:14:02,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:02,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:02,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:02,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:03,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:03,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 324 transitions, 3050 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:03,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:03,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:03,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:04,099 INFO L124 PetriNetUnfolderBase]: 1911/3966 cut-off events. [2024-06-27 18:14:04,099 INFO L125 PetriNetUnfolderBase]: For 118085/118085 co-relation queries the response was YES. [2024-06-27 18:14:04,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17351 conditions, 3966 events. 1911/3966 cut-off events. For 118085/118085 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 29911 event pairs, 479 based on Foata normal form. 2/3684 useless extension candidates. Maximal degree in co-relation 17185. Up to 3162 conditions per place. [2024-06-27 18:14:04,155 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 332 selfloop transitions, 23 changer transitions 0/364 dead transitions. [2024-06-27 18:14:04,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 364 transitions, 3936 flow [2024-06-27 18:14:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 18:14:04,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:14:04,157 INFO L175 Difference]: Start difference. First operand has 373 places, 324 transitions, 3050 flow. Second operand 11 states and 187 transitions. [2024-06-27 18:14:04,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 364 transitions, 3936 flow [2024-06-27 18:14:05,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 364 transitions, 3862 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:14:05,088 INFO L231 Difference]: Finished difference. Result has 375 places, 325 transitions, 3056 flow [2024-06-27 18:14:05,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3056, PETRI_PLACES=375, PETRI_TRANSITIONS=325} [2024-06-27 18:14:05,089 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-27 18:14:05,089 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 325 transitions, 3056 flow [2024-06-27 18:14:05,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:05,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:05,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:05,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:14:05,089 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:05,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:05,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1574707831, now seen corresponding path program 1 times [2024-06-27 18:14:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:05,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082476052] [2024-06-27 18:14:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:05,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:06,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:06,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082476052] [2024-06-27 18:14:06,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082476052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:06,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:06,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:14:06,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801104305] [2024-06-27 18:14:06,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:06,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:14:06,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:06,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:14:06,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:14:06,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:06,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 325 transitions, 3056 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:06,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:06,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:06,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:07,807 INFO L124 PetriNetUnfolderBase]: 1965/4120 cut-off events. [2024-06-27 18:14:07,807 INFO L125 PetriNetUnfolderBase]: For 173400/173400 co-relation queries the response was YES. [2024-06-27 18:14:07,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17897 conditions, 4120 events. 1965/4120 cut-off events. For 173400/173400 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 31593 event pairs, 537 based on Foata normal form. 8/3833 useless extension candidates. Maximal degree in co-relation 17730. Up to 3222 conditions per place. [2024-06-27 18:14:07,863 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 326 selfloop transitions, 26 changer transitions 0/361 dead transitions. [2024-06-27 18:14:07,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 361 transitions, 3942 flow [2024-06-27 18:14:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:14:07,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:14:07,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-27 18:14:07,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436936936936937 [2024-06-27 18:14:07,864 INFO L175 Difference]: Start difference. First operand has 375 places, 325 transitions, 3056 flow. Second operand 12 states and 197 transitions. [2024-06-27 18:14:07,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 361 transitions, 3942 flow [2024-06-27 18:14:08,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 361 transitions, 3872 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 18:14:08,746 INFO L231 Difference]: Finished difference. Result has 378 places, 325 transitions, 3042 flow [2024-06-27 18:14:08,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3042, PETRI_PLACES=378, PETRI_TRANSITIONS=325} [2024-06-27 18:14:08,746 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-27 18:14:08,747 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 325 transitions, 3042 flow [2024-06-27 18:14:08,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:08,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:08,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:08,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:14:08,754 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:08,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1590383953, now seen corresponding path program 5 times [2024-06-27 18:14:08,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:08,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503775580] [2024-06-27 18:14:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:08,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:09,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:09,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503775580] [2024-06-27 18:14:09,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503775580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:09,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:09,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:09,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053264071] [2024-06-27 18:14:09,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:09,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:09,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:09,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:09,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:10,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:10,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 325 transitions, 3042 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:10,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:10,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:10,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:11,071 INFO L124 PetriNetUnfolderBase]: 2019/4238 cut-off events. [2024-06-27 18:14:11,071 INFO L125 PetriNetUnfolderBase]: For 173282/173282 co-relation queries the response was YES. [2024-06-27 18:14:11,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18268 conditions, 4238 events. 2019/4238 cut-off events. For 173282/173282 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 32750 event pairs, 546 based on Foata normal form. 8/3949 useless extension candidates. Maximal degree in co-relation 18100. Up to 3156 conditions per place. [2024-06-27 18:14:11,124 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 332 selfloop transitions, 26 changer transitions 0/367 dead transitions. [2024-06-27 18:14:11,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 367 transitions, 4040 flow [2024-06-27 18:14:11,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:11,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:14:11,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:14:11,126 INFO L175 Difference]: Start difference. First operand has 378 places, 325 transitions, 3042 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:14:11,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 367 transitions, 4040 flow [2024-06-27 18:14:12,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 367 transitions, 3990 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:14:12,053 INFO L231 Difference]: Finished difference. Result has 380 places, 326 transitions, 3069 flow [2024-06-27 18:14:12,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2992, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3069, PETRI_PLACES=380, PETRI_TRANSITIONS=326} [2024-06-27 18:14:12,054 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 339 predicate places. [2024-06-27 18:14:12,054 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 326 transitions, 3069 flow [2024-06-27 18:14:12,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:12,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:12,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:12,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:14:12,054 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:12,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:12,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1595890483, now seen corresponding path program 6 times [2024-06-27 18:14:12,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:12,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319532697] [2024-06-27 18:14:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:12,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:13,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:13,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319532697] [2024-06-27 18:14:13,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319532697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:13,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:13,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:13,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692906968] [2024-06-27 18:14:13,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:13,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:13,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:13,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:13,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 326 transitions, 3069 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:13,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:13,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:13,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:14,336 INFO L124 PetriNetUnfolderBase]: 2036/4260 cut-off events. [2024-06-27 18:14:14,336 INFO L125 PetriNetUnfolderBase]: For 128621/128621 co-relation queries the response was YES. [2024-06-27 18:14:14,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18577 conditions, 4260 events. 2036/4260 cut-off events. For 128621/128621 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 32956 event pairs, 573 based on Foata normal form. 2/3965 useless extension candidates. Maximal degree in co-relation 18407. Up to 3416 conditions per place. [2024-06-27 18:14:14,393 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 331 selfloop transitions, 24 changer transitions 0/364 dead transitions. [2024-06-27 18:14:14,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 364 transitions, 3951 flow [2024-06-27 18:14:14,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:14,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:14:14,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:14:14,394 INFO L175 Difference]: Start difference. First operand has 380 places, 326 transitions, 3069 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:14:14,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 364 transitions, 3951 flow [2024-06-27 18:14:15,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 364 transitions, 3906 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:14:15,348 INFO L231 Difference]: Finished difference. Result has 383 places, 327 transitions, 3108 flow [2024-06-27 18:14:15,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3024, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3108, PETRI_PLACES=383, PETRI_TRANSITIONS=327} [2024-06-27 18:14:15,348 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-27 18:14:15,348 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 327 transitions, 3108 flow [2024-06-27 18:14:15,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:15,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:15,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:15,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:14:15,349 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:15,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:15,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1389087313, now seen corresponding path program 7 times [2024-06-27 18:14:15,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:15,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977076884] [2024-06-27 18:14:15,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:15,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:16,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:16,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977076884] [2024-06-27 18:14:16,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977076884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:16,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:16,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:16,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692053562] [2024-06-27 18:14:16,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:16,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:16,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:16,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:16,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:16,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:16,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 327 transitions, 3108 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:16,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:16,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:16,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:17,785 INFO L124 PetriNetUnfolderBase]: 2107/4454 cut-off events. [2024-06-27 18:14:17,786 INFO L125 PetriNetUnfolderBase]: For 203653/203653 co-relation queries the response was YES. [2024-06-27 18:14:17,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19626 conditions, 4454 events. 2107/4454 cut-off events. For 203653/203653 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 34955 event pairs, 634 based on Foata normal form. 10/4154 useless extension candidates. Maximal degree in co-relation 19455. Up to 3439 conditions per place. [2024-06-27 18:14:17,841 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 310 selfloop transitions, 41 changer transitions 0/360 dead transitions. [2024-06-27 18:14:17,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 360 transitions, 4010 flow [2024-06-27 18:14:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:17,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:14:17,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 18:14:17,842 INFO L175 Difference]: Start difference. First operand has 383 places, 327 transitions, 3108 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:14:17,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 360 transitions, 4010 flow [2024-06-27 18:14:18,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 360 transitions, 3936 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 18:14:18,725 INFO L231 Difference]: Finished difference. Result has 385 places, 328 transitions, 3156 flow [2024-06-27 18:14:18,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3034, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3156, PETRI_PLACES=385, PETRI_TRANSITIONS=328} [2024-06-27 18:14:18,725 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 344 predicate places. [2024-06-27 18:14:18,725 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 328 transitions, 3156 flow [2024-06-27 18:14:18,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:18,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:18,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:18,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:14:18,726 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:18,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1396237153, now seen corresponding path program 8 times [2024-06-27 18:14:18,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:18,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186346850] [2024-06-27 18:14:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:18,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:19,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:19,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186346850] [2024-06-27 18:14:19,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186346850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:19,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:19,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:19,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217620428] [2024-06-27 18:14:19,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:19,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:19,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:19,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:19,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:19,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:19,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 328 transitions, 3156 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:19,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:19,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:19,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:21,262 INFO L124 PetriNetUnfolderBase]: 2124/4493 cut-off events. [2024-06-27 18:14:21,262 INFO L125 PetriNetUnfolderBase]: For 138435/138435 co-relation queries the response was YES. [2024-06-27 18:14:21,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19871 conditions, 4493 events. 2124/4493 cut-off events. For 138435/138435 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 35410 event pairs, 643 based on Foata normal form. 2/4181 useless extension candidates. Maximal degree in co-relation 19699. Up to 3588 conditions per place. [2024-06-27 18:14:21,332 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 308 selfloop transitions, 41 changer transitions 0/358 dead transitions. [2024-06-27 18:14:21,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 358 transitions, 4002 flow [2024-06-27 18:14:21,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:21,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:14:21,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:14:21,333 INFO L175 Difference]: Start difference. First operand has 385 places, 328 transitions, 3156 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:14:21,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 358 transitions, 4002 flow [2024-06-27 18:14:22,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 358 transitions, 3898 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 18:14:22,406 INFO L231 Difference]: Finished difference. Result has 387 places, 329 transitions, 3174 flow [2024-06-27 18:14:22,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3052, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3174, PETRI_PLACES=387, PETRI_TRANSITIONS=329} [2024-06-27 18:14:22,407 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-27 18:14:22,407 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 329 transitions, 3174 flow [2024-06-27 18:14:22,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:22,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:22,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:22,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:14:22,408 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:22,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1396444543, now seen corresponding path program 9 times [2024-06-27 18:14:22,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:22,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657278189] [2024-06-27 18:14:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:22,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:23,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657278189] [2024-06-27 18:14:23,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657278189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:23,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:23,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:23,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957814241] [2024-06-27 18:14:23,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:23,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:23,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:23,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:23,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:23,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 329 transitions, 3174 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:23,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:23,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:23,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:24,572 INFO L124 PetriNetUnfolderBase]: 2141/4531 cut-off events. [2024-06-27 18:14:24,572 INFO L125 PetriNetUnfolderBase]: For 141534/141534 co-relation queries the response was YES. [2024-06-27 18:14:24,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20102 conditions, 4531 events. 2141/4531 cut-off events. For 141534/141534 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 35763 event pairs, 637 based on Foata normal form. 2/4220 useless extension candidates. Maximal degree in co-relation 19929. Up to 3428 conditions per place. [2024-06-27 18:14:24,634 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 314 selfloop transitions, 43 changer transitions 0/366 dead transitions. [2024-06-27 18:14:24,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 366 transitions, 4106 flow [2024-06-27 18:14:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:24,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:14:24,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 18:14:24,635 INFO L175 Difference]: Start difference. First operand has 387 places, 329 transitions, 3174 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:14:24,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 366 transitions, 4106 flow [2024-06-27 18:14:25,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 366 transitions, 3994 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 18:14:25,751 INFO L231 Difference]: Finished difference. Result has 389 places, 330 transitions, 3190 flow [2024-06-27 18:14:25,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3062, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3190, PETRI_PLACES=389, PETRI_TRANSITIONS=330} [2024-06-27 18:14:25,752 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-27 18:14:25,752 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 330 transitions, 3190 flow [2024-06-27 18:14:25,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:25,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:25,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:25,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:14:25,753 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:25,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:25,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1389079377, now seen corresponding path program 2 times [2024-06-27 18:14:25,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:25,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174793436] [2024-06-27 18:14:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:25,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:27,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174793436] [2024-06-27 18:14:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174793436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:27,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:27,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:14:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277855302] [2024-06-27 18:14:27,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:14:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:14:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:14:27,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:27,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 330 transitions, 3190 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:27,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:27,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:27,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:28,636 INFO L124 PetriNetUnfolderBase]: 2195/4670 cut-off events. [2024-06-27 18:14:28,637 INFO L125 PetriNetUnfolderBase]: For 197182/197182 co-relation queries the response was YES. [2024-06-27 18:14:28,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20630 conditions, 4670 events. 2195/4670 cut-off events. For 197182/197182 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 37282 event pairs, 692 based on Foata normal form. 8/4358 useless extension candidates. Maximal degree in co-relation 20456. Up to 3617 conditions per place. [2024-06-27 18:14:28,691 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 321 selfloop transitions, 34 changer transitions 0/364 dead transitions. [2024-06-27 18:14:28,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 364 transitions, 4076 flow [2024-06-27 18:14:28,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:14:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:14:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-27 18:14:28,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:14:28,693 INFO L175 Difference]: Start difference. First operand has 389 places, 330 transitions, 3190 flow. Second operand 12 states and 198 transitions. [2024-06-27 18:14:28,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 364 transitions, 4076 flow [2024-06-27 18:14:29,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 364 transitions, 3958 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 18:14:29,749 INFO L231 Difference]: Finished difference. Result has 392 places, 330 transitions, 3145 flow [2024-06-27 18:14:29,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3072, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3145, PETRI_PLACES=392, PETRI_TRANSITIONS=330} [2024-06-27 18:14:29,750 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-27 18:14:29,750 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 330 transitions, 3145 flow [2024-06-27 18:14:29,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:29,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:29,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:29,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:14:29,751 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:29,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:29,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1544580911, now seen corresponding path program 3 times [2024-06-27 18:14:29,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:29,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879626257] [2024-06-27 18:14:29,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:29,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:30,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:30,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879626257] [2024-06-27 18:14:30,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879626257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:30,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:30,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:14:30,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519646991] [2024-06-27 18:14:30,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:30,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:14:30,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:30,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:14:30,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:14:31,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:31,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 330 transitions, 3145 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:31,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:31,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:31,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:32,534 INFO L124 PetriNetUnfolderBase]: 2370/5122 cut-off events. [2024-06-27 18:14:32,534 INFO L125 PetriNetUnfolderBase]: For 256369/256369 co-relation queries the response was YES. [2024-06-27 18:14:32,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23184 conditions, 5122 events. 2370/5122 cut-off events. For 256369/256369 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 42161 event pairs, 797 based on Foata normal form. 6/4793 useless extension candidates. Maximal degree in co-relation 23009. Up to 3348 conditions per place. [2024-06-27 18:14:32,595 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 312 selfloop transitions, 50 changer transitions 0/371 dead transitions. [2024-06-27 18:14:32,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 371 transitions, 4373 flow [2024-06-27 18:14:32,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:14:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:14:32,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-27 18:14:32,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-27 18:14:32,597 INFO L175 Difference]: Start difference. First operand has 392 places, 330 transitions, 3145 flow. Second operand 12 states and 205 transitions. [2024-06-27 18:14:32,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 371 transitions, 4373 flow [2024-06-27 18:14:34,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 371 transitions, 4308 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:14:34,160 INFO L231 Difference]: Finished difference. Result has 394 places, 330 transitions, 3183 flow [2024-06-27 18:14:34,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3080, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3183, PETRI_PLACES=394, PETRI_TRANSITIONS=330} [2024-06-27 18:14:34,172 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 353 predicate places. [2024-06-27 18:14:34,172 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 330 transitions, 3183 flow [2024-06-27 18:14:34,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:34,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:34,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:34,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:14:34,173 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:34,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1551999521, now seen corresponding path program 4 times [2024-06-27 18:14:34,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:34,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813432995] [2024-06-27 18:14:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:34,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:35,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:35,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813432995] [2024-06-27 18:14:35,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813432995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:35,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:35,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:14:35,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235831869] [2024-06-27 18:14:35,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:35,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:14:35,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:35,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:14:35,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:14:36,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:36,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 330 transitions, 3183 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:36,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:36,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:36,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:37,762 INFO L124 PetriNetUnfolderBase]: 2360/5108 cut-off events. [2024-06-27 18:14:37,762 INFO L125 PetriNetUnfolderBase]: For 206842/206842 co-relation queries the response was YES. [2024-06-27 18:14:37,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22111 conditions, 5108 events. 2360/5108 cut-off events. For 206842/206842 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 42139 event pairs, 831 based on Foata normal form. 8/4771 useless extension candidates. Maximal degree in co-relation 21935. Up to 3978 conditions per place. [2024-06-27 18:14:37,832 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 321 selfloop transitions, 34 changer transitions 0/364 dead transitions. [2024-06-27 18:14:37,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 364 transitions, 4069 flow [2024-06-27 18:14:37,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:14:37,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:14:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-27 18:14:37,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-06-27 18:14:37,833 INFO L175 Difference]: Start difference. First operand has 394 places, 330 transitions, 3183 flow. Second operand 12 states and 199 transitions. [2024-06-27 18:14:37,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 364 transitions, 4069 flow [2024-06-27 18:14:39,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 364 transitions, 3997 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:14:39,271 INFO L231 Difference]: Finished difference. Result has 398 places, 330 transitions, 3185 flow [2024-06-27 18:14:39,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3185, PETRI_PLACES=398, PETRI_TRANSITIONS=330} [2024-06-27 18:14:39,271 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-27 18:14:39,271 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 330 transitions, 3185 flow [2024-06-27 18:14:39,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:39,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:39,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:39,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:14:39,272 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:39,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash -431282981, now seen corresponding path program 10 times [2024-06-27 18:14:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:39,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115697922] [2024-06-27 18:14:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:39,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:40,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:40,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115697922] [2024-06-27 18:14:40,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115697922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:40,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:40,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:40,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061856413] [2024-06-27 18:14:40,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:40,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:40,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:40,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:40,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:40,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 330 transitions, 3185 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:40,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:40,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:40,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:41,892 INFO L124 PetriNetUnfolderBase]: 2377/5131 cut-off events. [2024-06-27 18:14:41,892 INFO L125 PetriNetUnfolderBase]: For 155844/155844 co-relation queries the response was YES. [2024-06-27 18:14:41,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22464 conditions, 5131 events. 2377/5131 cut-off events. For 155844/155844 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 42352 event pairs, 842 based on Foata normal form. 2/4788 useless extension candidates. Maximal degree in co-relation 22287. Up to 4095 conditions per place. [2024-06-27 18:14:41,958 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 304 selfloop transitions, 43 changer transitions 0/356 dead transitions. [2024-06-27 18:14:41,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 356 transitions, 4013 flow [2024-06-27 18:14:41,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:14:41,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:14:41,959 INFO L175 Difference]: Start difference. First operand has 398 places, 330 transitions, 3185 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:14:41,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 356 transitions, 4013 flow [2024-06-27 18:14:43,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 356 transitions, 3945 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:14:43,366 INFO L231 Difference]: Finished difference. Result has 398 places, 331 transitions, 3247 flow [2024-06-27 18:14:43,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3247, PETRI_PLACES=398, PETRI_TRANSITIONS=331} [2024-06-27 18:14:43,366 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-27 18:14:43,366 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 331 transitions, 3247 flow [2024-06-27 18:14:43,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:43,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:43,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:43,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:14:43,367 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:43,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:43,367 INFO L85 PathProgramCache]: Analyzing trace with hash -431490371, now seen corresponding path program 11 times [2024-06-27 18:14:43,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:43,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836412463] [2024-06-27 18:14:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:43,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:44,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:44,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836412463] [2024-06-27 18:14:44,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836412463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:44,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:44,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:44,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236390587] [2024-06-27 18:14:44,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:44,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:44,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:44,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:44,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:44,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:44,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 331 transitions, 3247 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:44,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:44,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:44,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:46,027 INFO L124 PetriNetUnfolderBase]: 2478/5392 cut-off events. [2024-06-27 18:14:46,028 INFO L125 PetriNetUnfolderBase]: For 261333/261333 co-relation queries the response was YES. [2024-06-27 18:14:46,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25442 conditions, 5392 events. 2478/5392 cut-off events. For 261333/261333 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 45265 event pairs, 880 based on Foata normal form. 2/5033 useless extension candidates. Maximal degree in co-relation 25264. Up to 4078 conditions per place. [2024-06-27 18:14:46,091 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 312 selfloop transitions, 45 changer transitions 0/366 dead transitions. [2024-06-27 18:14:46,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 366 transitions, 4485 flow [2024-06-27 18:14:46,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:46,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:14:46,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:14:46,092 INFO L175 Difference]: Start difference. First operand has 398 places, 331 transitions, 3247 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:14:46,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 366 transitions, 4485 flow [2024-06-27 18:14:47,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 366 transitions, 4380 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:14:47,988 INFO L231 Difference]: Finished difference. Result has 401 places, 333 transitions, 3318 flow [2024-06-27 18:14:47,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3142, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3318, PETRI_PLACES=401, PETRI_TRANSITIONS=333} [2024-06-27 18:14:47,989 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 360 predicate places. [2024-06-27 18:14:47,989 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 333 transitions, 3318 flow [2024-06-27 18:14:47,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:47,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:47,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:47,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 18:14:47,989 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:47,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:47,990 INFO L85 PathProgramCache]: Analyzing trace with hash -424133141, now seen corresponding path program 12 times [2024-06-27 18:14:47,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:47,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759147795] [2024-06-27 18:14:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:47,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:49,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:49,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759147795] [2024-06-27 18:14:49,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759147795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:49,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:49,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:49,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885958225] [2024-06-27 18:14:49,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:49,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:49,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:49,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:49,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:49,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:49,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 333 transitions, 3318 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:49,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:49,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:49,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:50,427 INFO L124 PetriNetUnfolderBase]: 2465/5380 cut-off events. [2024-06-27 18:14:50,427 INFO L125 PetriNetUnfolderBase]: For 244007/244007 co-relation queries the response was YES. [2024-06-27 18:14:50,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23816 conditions, 5380 events. 2465/5380 cut-off events. For 244007/244007 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 45214 event pairs, 894 based on Foata normal form. 10/5028 useless extension candidates. Maximal degree in co-relation 23637. Up to 4149 conditions per place. [2024-06-27 18:14:50,500 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 309 selfloop transitions, 43 changer transitions 0/361 dead transitions. [2024-06-27 18:14:50,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 361 transitions, 4172 flow [2024-06-27 18:14:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:14:50,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 18:14:50,501 INFO L175 Difference]: Start difference. First operand has 401 places, 333 transitions, 3318 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:14:50,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 361 transitions, 4172 flow [2024-06-27 18:14:52,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 361 transitions, 4046 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 18:14:52,079 INFO L231 Difference]: Finished difference. Result has 405 places, 333 transitions, 3284 flow [2024-06-27 18:14:52,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3192, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3284, PETRI_PLACES=405, PETRI_TRANSITIONS=333} [2024-06-27 18:14:52,080 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-27 18:14:52,080 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 333 transitions, 3284 flow [2024-06-27 18:14:52,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:52,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:52,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:52,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 18:14:52,081 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:52,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1893720823, now seen corresponding path program 13 times [2024-06-27 18:14:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:52,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745079572] [2024-06-27 18:14:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:52,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:53,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:53,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745079572] [2024-06-27 18:14:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745079572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:53,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:53,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:53,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392045616] [2024-06-27 18:14:53,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:53,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:53,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:53,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:53,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:53,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:53,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 333 transitions, 3284 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:53,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:53,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:53,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:54,562 INFO L124 PetriNetUnfolderBase]: 2536/5564 cut-off events. [2024-06-27 18:14:54,562 INFO L125 PetriNetUnfolderBase]: For 247160/247160 co-relation queries the response was YES. [2024-06-27 18:14:54,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24463 conditions, 5564 events. 2536/5564 cut-off events. For 247160/247160 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 47316 event pairs, 929 based on Foata normal form. 10/5199 useless extension candidates. Maximal degree in co-relation 24282. Up to 4131 conditions per place. [2024-06-27 18:14:54,638 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 270 selfloop transitions, 83 changer transitions 0/362 dead transitions. [2024-06-27 18:14:54,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 362 transitions, 4182 flow [2024-06-27 18:14:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:14:54,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:14:54,639 INFO L175 Difference]: Start difference. First operand has 405 places, 333 transitions, 3284 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:14:54,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 362 transitions, 4182 flow [2024-06-27 18:14:56,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 362 transitions, 4090 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:14:56,312 INFO L231 Difference]: Finished difference. Result has 406 places, 334 transitions, 3408 flow [2024-06-27 18:14:56,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3192, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3408, PETRI_PLACES=406, PETRI_TRANSITIONS=334} [2024-06-27 18:14:56,312 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-27 18:14:56,313 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 334 transitions, 3408 flow [2024-06-27 18:14:56,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:56,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:14:56,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:14:56,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 18:14:56,313 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:14:56,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:14:56,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1994451029, now seen corresponding path program 14 times [2024-06-27 18:14:56,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:14:56,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189131477] [2024-06-27 18:14:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:14:56,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:14:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:14:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:14:57,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:14:57,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189131477] [2024-06-27 18:14:57,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189131477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:14:57,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:14:57,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:14:57,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863575236] [2024-06-27 18:14:57,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:14:57,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:14:57,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:14:57,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:14:57,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:14:57,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:14:57,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 334 transitions, 3408 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:14:57,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:14:57,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:14:57,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:14:58,825 INFO L124 PetriNetUnfolderBase]: 2553/5587 cut-off events. [2024-06-27 18:14:58,825 INFO L125 PetriNetUnfolderBase]: For 175384/175384 co-relation queries the response was YES. [2024-06-27 18:14:58,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25034 conditions, 5587 events. 2553/5587 cut-off events. For 175384/175384 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 47548 event pairs, 938 based on Foata normal form. 2/5214 useless extension candidates. Maximal degree in co-relation 24852. Up to 4280 conditions per place. [2024-06-27 18:14:58,905 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 270 selfloop transitions, 81 changer transitions 0/360 dead transitions. [2024-06-27 18:14:58,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 360 transitions, 4250 flow [2024-06-27 18:14:58,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:14:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:14:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 18:14:58,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:14:58,906 INFO L175 Difference]: Start difference. First operand has 406 places, 334 transitions, 3408 flow. Second operand 11 states and 187 transitions. [2024-06-27 18:14:58,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 360 transitions, 4250 flow [2024-06-27 18:15:00,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 360 transitions, 4052 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:15:00,531 INFO L231 Difference]: Finished difference. Result has 408 places, 335 transitions, 3422 flow [2024-06-27 18:15:00,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3210, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3422, PETRI_PLACES=408, PETRI_TRANSITIONS=335} [2024-06-27 18:15:00,532 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-27 18:15:00,532 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 335 transitions, 3422 flow [2024-06-27 18:15:00,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:00,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:00,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:00,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 18:15:00,532 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:00,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:00,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1994658419, now seen corresponding path program 15 times [2024-06-27 18:15:00,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:00,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332309075] [2024-06-27 18:15:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:01,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:01,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332309075] [2024-06-27 18:15:01,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332309075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:01,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:01,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:15:01,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941852071] [2024-06-27 18:15:01,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:01,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:15:01,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:01,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:15:01,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:15:01,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:15:01,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 335 transitions, 3422 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:01,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:01,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:15:01,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:03,116 INFO L124 PetriNetUnfolderBase]: 2654/5841 cut-off events. [2024-06-27 18:15:03,116 INFO L125 PetriNetUnfolderBase]: For 285397/285397 co-relation queries the response was YES. [2024-06-27 18:15:03,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27857 conditions, 5841 events. 2654/5841 cut-off events. For 285397/285397 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 50427 event pairs, 982 based on Foata normal form. 2/5458 useless extension candidates. Maximal degree in co-relation 27674. Up to 4124 conditions per place. [2024-06-27 18:15:03,198 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 277 selfloop transitions, 84 changer transitions 0/370 dead transitions. [2024-06-27 18:15:03,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 370 transitions, 4688 flow [2024-06-27 18:15:03,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:15:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:15:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 18:15:03,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-27 18:15:03,199 INFO L175 Difference]: Start difference. First operand has 408 places, 335 transitions, 3422 flow. Second operand 11 states and 195 transitions. [2024-06-27 18:15:03,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 370 transitions, 4688 flow [2024-06-27 18:15:05,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 370 transitions, 4486 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 18:15:05,161 INFO L231 Difference]: Finished difference. Result has 410 places, 337 transitions, 3486 flow [2024-06-27 18:15:05,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3220, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3486, PETRI_PLACES=410, PETRI_TRANSITIONS=337} [2024-06-27 18:15:05,162 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-27 18:15:05,162 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 337 transitions, 3486 flow [2024-06-27 18:15:05,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:05,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:05,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:05,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 18:15:05,162 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:05,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:05,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1987301189, now seen corresponding path program 16 times [2024-06-27 18:15:05,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:05,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898884436] [2024-06-27 18:15:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:05,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:06,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898884436] [2024-06-27 18:15:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898884436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:06,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:06,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:15:06,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490500916] [2024-06-27 18:15:06,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:06,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:15:06,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:06,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:15:06,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:15:06,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:15:06,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 337 transitions, 3486 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:06,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:06,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:15:06,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:07,752 INFO L124 PetriNetUnfolderBase]: 2641/5818 cut-off events. [2024-06-27 18:15:07,752 INFO L125 PetriNetUnfolderBase]: For 266287/266287 co-relation queries the response was YES. [2024-06-27 18:15:07,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26137 conditions, 5818 events. 2641/5818 cut-off events. For 266287/266287 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 50218 event pairs, 970 based on Foata normal form. 10/5434 useless extension candidates. Maximal degree in co-relation 25953. Up to 4334 conditions per place. [2024-06-27 18:15:07,829 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 280 selfloop transitions, 76 changer transitions 0/365 dead transitions. [2024-06-27 18:15:07,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 365 transitions, 4348 flow [2024-06-27 18:15:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:15:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:15:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:15:07,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 18:15:07,831 INFO L175 Difference]: Start difference. First operand has 410 places, 337 transitions, 3486 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:15:07,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 365 transitions, 4348 flow [2024-06-27 18:15:09,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 365 transitions, 4120 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-27 18:15:09,409 INFO L231 Difference]: Finished difference. Result has 412 places, 337 transitions, 3416 flow [2024-06-27 18:15:09,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3258, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3416, PETRI_PLACES=412, PETRI_TRANSITIONS=337} [2024-06-27 18:15:09,410 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 371 predicate places. [2024-06-27 18:15:09,410 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 337 transitions, 3416 flow [2024-06-27 18:15:09,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:09,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:09,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:09,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 18:15:09,410 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:09,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:09,411 INFO L85 PathProgramCache]: Analyzing trace with hash -469452087, now seen corresponding path program 17 times [2024-06-27 18:15:09,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:09,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094353256] [2024-06-27 18:15:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:09,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:10,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:10,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094353256] [2024-06-27 18:15:10,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094353256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:10,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:10,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:15:10,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104084296] [2024-06-27 18:15:10,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:10,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:15:10,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:15:10,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:15:10,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:15:10,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 337 transitions, 3416 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:10,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:10,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:15:10,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:12,209 INFO L124 PetriNetUnfolderBase]: 2695/5944 cut-off events. [2024-06-27 18:15:12,210 INFO L125 PetriNetUnfolderBase]: For 240881/240881 co-relation queries the response was YES. [2024-06-27 18:15:12,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26230 conditions, 5944 events. 2695/5944 cut-off events. For 240881/240881 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 51605 event pairs, 1018 based on Foata normal form. 8/5554 useless extension candidates. Maximal degree in co-relation 26046. Up to 4555 conditions per place. [2024-06-27 18:15:12,291 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 330 selfloop transitions, 29 changer transitions 0/368 dead transitions. [2024-06-27 18:15:12,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 368 transitions, 4357 flow [2024-06-27 18:15:12,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:15:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:15:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:15:12,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 18:15:12,292 INFO L175 Difference]: Start difference. First operand has 412 places, 337 transitions, 3416 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:15:12,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 368 transitions, 4357 flow [2024-06-27 18:15:13,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 368 transitions, 4191 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 18:15:13,855 INFO L231 Difference]: Finished difference. Result has 414 places, 338 transitions, 3337 flow [2024-06-27 18:15:13,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3337, PETRI_PLACES=414, PETRI_TRANSITIONS=338} [2024-06-27 18:15:13,856 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2024-06-27 18:15:13,856 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 338 transitions, 3337 flow [2024-06-27 18:15:13,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:13,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:13,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:13,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 18:15:13,856 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:13,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash -469659477, now seen corresponding path program 18 times [2024-06-27 18:15:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:13,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795462810] [2024-06-27 18:15:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:14,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:14,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795462810] [2024-06-27 18:15:14,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795462810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:14,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:14,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:15:14,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780267585] [2024-06-27 18:15:14,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:14,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:15:14,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:14,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:15:14,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:15:15,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:15:15,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 338 transitions, 3337 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:15,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:15,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:15:15,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:16,494 INFO L124 PetriNetUnfolderBase]: 2749/6070 cut-off events. [2024-06-27 18:15:16,494 INFO L125 PetriNetUnfolderBase]: For 243750/243750 co-relation queries the response was YES. [2024-06-27 18:15:16,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26667 conditions, 6070 events. 2749/6070 cut-off events. For 243750/243750 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 53006 event pairs, 1018 based on Foata normal form. 8/5677 useless extension candidates. Maximal degree in co-relation 26481. Up to 4520 conditions per place. [2024-06-27 18:15:16,569 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 337 selfloop transitions, 29 changer transitions 0/375 dead transitions. [2024-06-27 18:15:16,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 375 transitions, 4348 flow [2024-06-27 18:15:16,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:15:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:15:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:15:16,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:15:16,570 INFO L175 Difference]: Start difference. First operand has 414 places, 338 transitions, 3337 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:15:16,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 375 transitions, 4348 flow [2024-06-27 18:15:18,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 375 transitions, 4297 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:15:18,363 INFO L231 Difference]: Finished difference. Result has 417 places, 338 transitions, 3347 flow [2024-06-27 18:15:18,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3286, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3347, PETRI_PLACES=417, PETRI_TRANSITIONS=338} [2024-06-27 18:15:18,364 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2024-06-27 18:15:18,364 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 338 transitions, 3347 flow [2024-06-27 18:15:18,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:18,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:18,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:18,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 18:15:18,365 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:18,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:18,365 INFO L85 PathProgramCache]: Analyzing trace with hash -475166007, now seen corresponding path program 19 times [2024-06-27 18:15:18,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:18,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847593518] [2024-06-27 18:15:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:18,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:19,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:19,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847593518] [2024-06-27 18:15:19,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847593518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:19,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:19,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:15:19,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078647846] [2024-06-27 18:15:19,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:19,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:15:19,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:19,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:15:19,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:15:19,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:15:19,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 338 transitions, 3347 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:19,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:19,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:15:19,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:21,259 INFO L124 PetriNetUnfolderBase]: 2766/6093 cut-off events. [2024-06-27 18:15:21,259 INFO L125 PetriNetUnfolderBase]: For 190004/190004 co-relation queries the response was YES. [2024-06-27 18:15:21,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27062 conditions, 6093 events. 2766/6093 cut-off events. For 190004/190004 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 53296 event pairs, 1061 based on Foata normal form. 2/5695 useless extension candidates. Maximal degree in co-relation 26875. Up to 4860 conditions per place. [2024-06-27 18:15:21,352 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 336 selfloop transitions, 27 changer transitions 0/372 dead transitions. [2024-06-27 18:15:21,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 372 transitions, 4241 flow [2024-06-27 18:15:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:15:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:15:21,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:15:21,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:15:21,353 INFO L175 Difference]: Start difference. First operand has 417 places, 338 transitions, 3347 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:15:21,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 372 transitions, 4241 flow [2024-06-27 18:15:23,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 372 transitions, 4184 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:15:23,265 INFO L231 Difference]: Finished difference. Result has 419 places, 339 transitions, 3394 flow [2024-06-27 18:15:23,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3290, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3394, PETRI_PLACES=419, PETRI_TRANSITIONS=339} [2024-06-27 18:15:23,266 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-27 18:15:23,266 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 339 transitions, 3394 flow [2024-06-27 18:15:23,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:23,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:23,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:23,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 18:15:23,266 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:23,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:23,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1728419383, now seen corresponding path program 5 times [2024-06-27 18:15:23,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:23,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031506619] [2024-06-27 18:15:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:23,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:24,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:24,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031506619] [2024-06-27 18:15:24,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031506619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:24,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:24,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:24,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353599426] [2024-06-27 18:15:24,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:24,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:24,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:24,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:24,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:24,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:15:24,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 339 transitions, 3394 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:24,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:24,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:15:24,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:26,284 INFO L124 PetriNetUnfolderBase]: 2867/6388 cut-off events. [2024-06-27 18:15:26,285 INFO L125 PetriNetUnfolderBase]: For 322894/322894 co-relation queries the response was YES. [2024-06-27 18:15:26,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29593 conditions, 6388 events. 2867/6388 cut-off events. For 322894/322894 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 56701 event pairs, 1108 based on Foata normal form. 6/5997 useless extension candidates. Maximal degree in co-relation 29405. Up to 3288 conditions per place. [2024-06-27 18:15:26,372 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 271 selfloop transitions, 100 changer transitions 0/380 dead transitions. [2024-06-27 18:15:26,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 380 transitions, 4660 flow [2024-06-27 18:15:26,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:15:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:15:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 211 transitions. [2024-06-27 18:15:26,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752252252252252 [2024-06-27 18:15:26,373 INFO L175 Difference]: Start difference. First operand has 419 places, 339 transitions, 3394 flow. Second operand 12 states and 211 transitions. [2024-06-27 18:15:26,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 380 transitions, 4660 flow [2024-06-27 18:15:28,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 380 transitions, 4566 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 18:15:28,516 INFO L231 Difference]: Finished difference. Result has 422 places, 339 transitions, 3503 flow [2024-06-27 18:15:28,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3300, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3503, PETRI_PLACES=422, PETRI_TRANSITIONS=339} [2024-06-27 18:15:28,517 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 381 predicate places. [2024-06-27 18:15:28,517 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 339 transitions, 3503 flow [2024-06-27 18:15:28,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:28,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:28,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:28,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 18:15:28,518 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:28,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:28,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1728736513, now seen corresponding path program 6 times [2024-06-27 18:15:28,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:28,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831442215] [2024-06-27 18:15:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:28,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:29,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831442215] [2024-06-27 18:15:29,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831442215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:29,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:29,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:29,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075371178] [2024-06-27 18:15:29,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:29,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:29,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:29,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:29,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:29,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:15:29,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 339 transitions, 3503 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:29,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:29,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:15:29,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:31,688 INFO L124 PetriNetUnfolderBase]: 2982/6659 cut-off events. [2024-06-27 18:15:31,689 INFO L125 PetriNetUnfolderBase]: For 328808/328808 co-relation queries the response was YES. [2024-06-27 18:15:31,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30827 conditions, 6659 events. 2982/6659 cut-off events. For 328808/328808 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 60055 event pairs, 1185 based on Foata normal form. 6/6233 useless extension candidates. Maximal degree in co-relation 30638. Up to 4882 conditions per place. [2024-06-27 18:15:31,786 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 267 selfloop transitions, 102 changer transitions 0/378 dead transitions. [2024-06-27 18:15:31,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 378 transitions, 4479 flow [2024-06-27 18:15:31,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:15:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:15:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-06-27 18:15:31,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 18:15:31,787 INFO L175 Difference]: Start difference. First operand has 422 places, 339 transitions, 3503 flow. Second operand 12 states and 207 transitions. [2024-06-27 18:15:31,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 378 transitions, 4479 flow [2024-06-27 18:15:34,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 378 transitions, 4276 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:15:34,406 INFO L231 Difference]: Finished difference. Result has 425 places, 342 transitions, 3539 flow [2024-06-27 18:15:34,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3304, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3539, PETRI_PLACES=425, PETRI_TRANSITIONS=342} [2024-06-27 18:15:34,407 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 384 predicate places. [2024-06-27 18:15:34,407 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 342 transitions, 3539 flow [2024-06-27 18:15:34,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:34,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:34,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:34,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 18:15:34,408 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:34,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:34,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1737942583, now seen corresponding path program 7 times [2024-06-27 18:15:34,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:34,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136230623] [2024-06-27 18:15:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:34,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:36,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:36,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136230623] [2024-06-27 18:15:36,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136230623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:36,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:36,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:36,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877414463] [2024-06-27 18:15:36,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:36,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:36,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:36,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:36,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:36,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:15:36,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 342 transitions, 3539 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:36,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:36,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:15:36,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:38,143 INFO L124 PetriNetUnfolderBase]: 2972/6670 cut-off events. [2024-06-27 18:15:38,143 INFO L125 PetriNetUnfolderBase]: For 271566/271566 co-relation queries the response was YES. [2024-06-27 18:15:38,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29622 conditions, 6670 events. 2972/6670 cut-off events. For 271566/271566 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 60283 event pairs, 1226 based on Foata normal form. 8/6245 useless extension candidates. Maximal degree in co-relation 29431. Up to 4721 conditions per place. [2024-06-27 18:15:38,243 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 269 selfloop transitions, 94 changer transitions 0/372 dead transitions. [2024-06-27 18:15:38,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 372 transitions, 4423 flow [2024-06-27 18:15:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:15:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:15:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-27 18:15:38,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572072072072072 [2024-06-27 18:15:38,244 INFO L175 Difference]: Start difference. First operand has 425 places, 342 transitions, 3539 flow. Second operand 12 states and 203 transitions. [2024-06-27 18:15:38,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 372 transitions, 4423 flow [2024-06-27 18:15:40,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 372 transitions, 4275 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:15:40,213 INFO L231 Difference]: Finished difference. Result has 430 places, 342 transitions, 3589 flow [2024-06-27 18:15:40,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3589, PETRI_PLACES=430, PETRI_TRANSITIONS=342} [2024-06-27 18:15:40,213 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 389 predicate places. [2024-06-27 18:15:40,213 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 342 transitions, 3589 flow [2024-06-27 18:15:40,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:40,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:40,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:40,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 18:15:40,214 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:40,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1893444117, now seen corresponding path program 8 times [2024-06-27 18:15:40,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:40,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410999147] [2024-06-27 18:15:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:40,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:41,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410999147] [2024-06-27 18:15:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410999147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:41,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:41,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:41,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520470614] [2024-06-27 18:15:41,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:41,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:41,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:41,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:41,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:41,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:15:41,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 342 transitions, 3589 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:41,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:41,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:15:41,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:43,354 INFO L124 PetriNetUnfolderBase]: 3009/6738 cut-off events. [2024-06-27 18:15:43,354 INFO L125 PetriNetUnfolderBase]: For 251449/251449 co-relation queries the response was YES. [2024-06-27 18:15:43,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30121 conditions, 6738 events. 3009/6738 cut-off events. For 251449/251449 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 61081 event pairs, 1220 based on Foata normal form. 6/6310 useless extension candidates. Maximal degree in co-relation 29929. Up to 4915 conditions per place. [2024-06-27 18:15:43,453 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 298 selfloop transitions, 71 changer transitions 0/378 dead transitions. [2024-06-27 18:15:43,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 378 transitions, 4539 flow [2024-06-27 18:15:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:15:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:15:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-27 18:15:43,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-27 18:15:43,455 INFO L175 Difference]: Start difference. First operand has 430 places, 342 transitions, 3589 flow. Second operand 12 states and 206 transitions. [2024-06-27 18:15:43,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 378 transitions, 4539 flow [2024-06-27 18:15:45,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 378 transitions, 4351 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:15:45,617 INFO L231 Difference]: Finished difference. Result has 431 places, 342 transitions, 3546 flow [2024-06-27 18:15:45,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3546, PETRI_PLACES=431, PETRI_TRANSITIONS=342} [2024-06-27 18:15:45,618 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2024-06-27 18:15:45,618 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 342 transitions, 3546 flow [2024-06-27 18:15:45,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:45,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:45,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:45,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 18:15:45,619 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:45,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2143063557, now seen corresponding path program 9 times [2024-06-27 18:15:45,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:45,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104084721] [2024-06-27 18:15:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:45,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:47,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:47,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104084721] [2024-06-27 18:15:47,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104084721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:47,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:47,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:47,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618702541] [2024-06-27 18:15:47,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:47,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:47,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:47,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:47,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:47,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:15:47,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 342 transitions, 3546 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:47,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:47,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:15:47,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:48,788 INFO L124 PetriNetUnfolderBase]: 3063/6927 cut-off events. [2024-06-27 18:15:48,788 INFO L125 PetriNetUnfolderBase]: For 281379/281379 co-relation queries the response was YES. [2024-06-27 18:15:48,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30714 conditions, 6927 events. 3063/6927 cut-off events. For 281379/281379 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 63547 event pairs, 1303 based on Foata normal form. 8/6481 useless extension candidates. Maximal degree in co-relation 30521. Up to 5307 conditions per place. [2024-06-27 18:15:48,888 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 308 selfloop transitions, 55 changer transitions 0/372 dead transitions. [2024-06-27 18:15:48,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 372 transitions, 4430 flow [2024-06-27 18:15:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:15:48,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:15:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-27 18:15:48,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:15:48,889 INFO L175 Difference]: Start difference. First operand has 431 places, 342 transitions, 3546 flow. Second operand 12 states and 200 transitions. [2024-06-27 18:15:48,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 372 transitions, 4430 flow [2024-06-27 18:15:51,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 372 transitions, 4249 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:15:51,144 INFO L231 Difference]: Finished difference. Result has 433 places, 342 transitions, 3479 flow [2024-06-27 18:15:51,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3479, PETRI_PLACES=433, PETRI_TRANSITIONS=342} [2024-06-27 18:15:51,144 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-27 18:15:51,144 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 342 transitions, 3479 flow [2024-06-27 18:15:51,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:51,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:51,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:51,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 18:15:51,145 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:51,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:51,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2142794787, now seen corresponding path program 10 times [2024-06-27 18:15:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:51,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714471321] [2024-06-27 18:15:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:51,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:52,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:52,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714471321] [2024-06-27 18:15:52,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714471321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:52,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:52,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:15:52,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209403585] [2024-06-27 18:15:52,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:52,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:15:52,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:15:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:15:52,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:15:52,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 342 transitions, 3479 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:52,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:52,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:15:52,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:54,567 INFO L124 PetriNetUnfolderBase]: 3164/7189 cut-off events. [2024-06-27 18:15:54,567 INFO L125 PetriNetUnfolderBase]: For 356754/356754 co-relation queries the response was YES. [2024-06-27 18:15:54,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33027 conditions, 7189 events. 3164/7189 cut-off events. For 356754/356754 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 66677 event pairs, 1327 based on Foata normal form. 6/6731 useless extension candidates. Maximal degree in co-relation 32834. Up to 5091 conditions per place. [2024-06-27 18:15:54,678 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 304 selfloop transitions, 66 changer transitions 0/379 dead transitions. [2024-06-27 18:15:54,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 379 transitions, 4739 flow [2024-06-27 18:15:54,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:15:54,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:15:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-27 18:15:54,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 18:15:54,679 INFO L175 Difference]: Start difference. First operand has 433 places, 342 transitions, 3479 flow. Second operand 12 states and 208 transitions. [2024-06-27 18:15:54,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 379 transitions, 4739 flow [2024-06-27 18:15:57,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 379 transitions, 4631 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:15:57,974 INFO L231 Difference]: Finished difference. Result has 435 places, 342 transitions, 3506 flow [2024-06-27 18:15:57,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3371, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3506, PETRI_PLACES=435, PETRI_TRANSITIONS=342} [2024-06-27 18:15:57,975 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-27 18:15:57,975 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 342 transitions, 3506 flow [2024-06-27 18:15:57,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:57,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:57,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:57,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 18:15:57,975 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:57,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:57,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2144753899, now seen corresponding path program 11 times [2024-06-27 18:15:57,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:57,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611612632] [2024-06-27 18:15:57,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:57,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:00,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:00,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611612632] [2024-06-27 18:16:00,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611612632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:00,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:00,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:16:00,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112360857] [2024-06-27 18:16:00,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:00,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:16:00,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:00,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:16:00,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:16:00,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:16:00,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 342 transitions, 3506 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:00,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:00,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:16:00,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:02,283 INFO L124 PetriNetUnfolderBase]: 3154/7175 cut-off events. [2024-06-27 18:16:02,283 INFO L125 PetriNetUnfolderBase]: For 291858/291858 co-relation queries the response was YES. [2024-06-27 18:16:02,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31795 conditions, 7175 events. 3154/7175 cut-off events. For 291858/291858 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 66618 event pairs, 1358 based on Foata normal form. 8/6713 useless extension candidates. Maximal degree in co-relation 31601. Up to 5435 conditions per place. [2024-06-27 18:16:02,387 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 300 selfloop transitions, 63 changer transitions 0/372 dead transitions. [2024-06-27 18:16:02,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 372 transitions, 4390 flow [2024-06-27 18:16:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:16:02,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:16:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-27 18:16:02,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-27 18:16:02,388 INFO L175 Difference]: Start difference. First operand has 435 places, 342 transitions, 3506 flow. Second operand 12 states and 201 transitions. [2024-06-27 18:16:02,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 372 transitions, 4390 flow [2024-06-27 18:16:04,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 372 transitions, 4269 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:16:04,693 INFO L231 Difference]: Finished difference. Result has 438 places, 342 transitions, 3517 flow [2024-06-27 18:16:04,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3385, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3517, PETRI_PLACES=438, PETRI_TRANSITIONS=342} [2024-06-27 18:16:04,693 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 397 predicate places. [2024-06-27 18:16:04,693 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 342 transitions, 3517 flow [2024-06-27 18:16:04,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:04,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:04,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:04,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 18:16:04,694 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:04,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:04,694 INFO L85 PathProgramCache]: Analyzing trace with hash -431275045, now seen corresponding path program 12 times [2024-06-27 18:16:04,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:04,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802112119] [2024-06-27 18:16:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:04,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:06,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:06,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802112119] [2024-06-27 18:16:06,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802112119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:06,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:06,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:16:06,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387989106] [2024-06-27 18:16:06,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:06,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:16:06,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:06,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:16:06,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:16:06,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:16:06,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 342 transitions, 3517 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:06,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:06,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:16:06,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:08,380 INFO L124 PetriNetUnfolderBase]: 3208/7319 cut-off events. [2024-06-27 18:16:08,381 INFO L125 PetriNetUnfolderBase]: For 297251/297251 co-relation queries the response was YES. [2024-06-27 18:16:08,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32461 conditions, 7319 events. 3208/7319 cut-off events. For 297251/297251 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 68361 event pairs, 1396 based on Foata normal form. 8/6846 useless extension candidates. Maximal degree in co-relation 32266. Up to 5692 conditions per place. [2024-06-27 18:16:08,495 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 327 selfloop transitions, 36 changer transitions 0/372 dead transitions. [2024-06-27 18:16:08,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 372 transitions, 4401 flow [2024-06-27 18:16:08,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:16:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:16:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-27 18:16:08,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:16:08,497 INFO L175 Difference]: Start difference. First operand has 438 places, 342 transitions, 3517 flow. Second operand 12 states and 198 transitions. [2024-06-27 18:16:08,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 372 transitions, 4401 flow [2024-06-27 18:16:10,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 372 transitions, 4275 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:16:10,884 INFO L231 Difference]: Finished difference. Result has 439 places, 342 transitions, 3467 flow [2024-06-27 18:16:10,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3467, PETRI_PLACES=439, PETRI_TRANSITIONS=342} [2024-06-27 18:16:10,885 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-27 18:16:10,885 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 342 transitions, 3467 flow [2024-06-27 18:16:10,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:10,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:10,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:10,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 18:16:10,885 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:10,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash -424125205, now seen corresponding path program 13 times [2024-06-27 18:16:10,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:10,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746849761] [2024-06-27 18:16:10,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:10,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:12,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:12,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746849761] [2024-06-27 18:16:12,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746849761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:12,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:12,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:16:12,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420937442] [2024-06-27 18:16:12,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:12,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:16:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:12,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:16:12,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:16:13,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:16:13,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 342 transitions, 3467 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:13,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:13,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:16:13,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:15,053 INFO L124 PetriNetUnfolderBase]: 3262/7456 cut-off events. [2024-06-27 18:16:15,053 INFO L125 PetriNetUnfolderBase]: For 301947/301947 co-relation queries the response was YES. [2024-06-27 18:16:15,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32988 conditions, 7456 events. 3262/7456 cut-off events. For 301947/301947 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 70020 event pairs, 1432 based on Foata normal form. 8/6979 useless extension candidates. Maximal degree in co-relation 32792. Up to 5737 conditions per place. [2024-06-27 18:16:15,161 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 323 selfloop transitions, 40 changer transitions 0/372 dead transitions. [2024-06-27 18:16:15,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 372 transitions, 4351 flow [2024-06-27 18:16:15,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:16:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:16:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-27 18:16:15,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-06-27 18:16:15,163 INFO L175 Difference]: Start difference. First operand has 439 places, 342 transitions, 3467 flow. Second operand 12 states and 199 transitions. [2024-06-27 18:16:15,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 372 transitions, 4351 flow [2024-06-27 18:16:17,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 372 transitions, 4264 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:16:17,821 INFO L231 Difference]: Finished difference. Result has 440 places, 342 transitions, 3465 flow [2024-06-27 18:16:17,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3380, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3465, PETRI_PLACES=440, PETRI_TRANSITIONS=342} [2024-06-27 18:16:17,821 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 399 predicate places. [2024-06-27 18:16:17,821 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 342 transitions, 3465 flow [2024-06-27 18:16:17,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:17,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:17,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:17,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 18:16:17,822 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:17,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash -423856435, now seen corresponding path program 14 times [2024-06-27 18:16:17,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:17,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906825000] [2024-06-27 18:16:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:17,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:19,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:19,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906825000] [2024-06-27 18:16:19,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906825000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:19,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:19,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:16:19,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712438988] [2024-06-27 18:16:19,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:19,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:16:19,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:19,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:16:19,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:16:19,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:16:19,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 342 transitions, 3465 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:19,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:19,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:16:19,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:21,172 INFO L124 PetriNetUnfolderBase]: 3336/7643 cut-off events. [2024-06-27 18:16:21,172 INFO L125 PetriNetUnfolderBase]: For 279725/279725 co-relation queries the response was YES. [2024-06-27 18:16:21,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33751 conditions, 7643 events. 3336/7643 cut-off events. For 279725/279725 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 72249 event pairs, 1465 based on Foata normal form. 6/7161 useless extension candidates. Maximal degree in co-relation 33554. Up to 5442 conditions per place. [2024-06-27 18:16:21,309 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 322 selfloop transitions, 47 changer transitions 0/378 dead transitions. [2024-06-27 18:16:21,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 378 transitions, 4415 flow [2024-06-27 18:16:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:16:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:16:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-27 18:16:21,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:16:21,311 INFO L175 Difference]: Start difference. First operand has 440 places, 342 transitions, 3465 flow. Second operand 12 states and 204 transitions. [2024-06-27 18:16:21,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 378 transitions, 4415 flow [2024-06-27 18:16:23,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 378 transitions, 4307 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:16:23,774 INFO L231 Difference]: Finished difference. Result has 441 places, 342 transitions, 3454 flow [2024-06-27 18:16:23,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3357, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3454, PETRI_PLACES=441, PETRI_TRANSITIONS=342} [2024-06-27 18:16:23,774 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 400 predicate places. [2024-06-27 18:16:23,774 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 342 transitions, 3454 flow [2024-06-27 18:16:23,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:23,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:23,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:23,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 18:16:23,775 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:23,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:23,775 INFO L85 PathProgramCache]: Analyzing trace with hash -248500997, now seen corresponding path program 20 times [2024-06-27 18:16:23,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:23,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243255216] [2024-06-27 18:16:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:23,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:24,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:24,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243255216] [2024-06-27 18:16:24,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243255216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:24,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:24,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:16:24,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631418251] [2024-06-27 18:16:24,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:24,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:16:24,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:24,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:16:24,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:16:24,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:16:24,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 342 transitions, 3454 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:24,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:24,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:16:24,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:26,833 INFO L124 PetriNetUnfolderBase]: 3407/7800 cut-off events. [2024-06-27 18:16:26,833 INFO L125 PetriNetUnfolderBase]: For 341824/341827 co-relation queries the response was YES. [2024-06-27 18:16:26,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34778 conditions, 7800 events. 3407/7800 cut-off events. For 341824/341827 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 74042 event pairs, 1547 based on Foata normal form. 10/7308 useless extension candidates. Maximal degree in co-relation 34580. Up to 5947 conditions per place. [2024-06-27 18:16:26,949 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 293 selfloop transitions, 67 changer transitions 0/369 dead transitions. [2024-06-27 18:16:26,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 369 transitions, 4364 flow [2024-06-27 18:16:26,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:16:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:16:26,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:16:26,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:16:26,950 INFO L175 Difference]: Start difference. First operand has 441 places, 342 transitions, 3454 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:16:26,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 369 transitions, 4364 flow [2024-06-27 18:16:29,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 369 transitions, 4283 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:16:29,770 INFO L231 Difference]: Finished difference. Result has 443 places, 343 transitions, 3561 flow [2024-06-27 18:16:29,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3561, PETRI_PLACES=443, PETRI_TRANSITIONS=343} [2024-06-27 18:16:29,770 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-27 18:16:29,770 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 343 transitions, 3561 flow [2024-06-27 18:16:29,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:29,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:29,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:29,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 18:16:29,771 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:29,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash -255852647, now seen corresponding path program 21 times [2024-06-27 18:16:29,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:29,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449507554] [2024-06-27 18:16:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:29,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:31,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:31,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:31,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449507554] [2024-06-27 18:16:31,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449507554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:31,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:31,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:16:31,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114351393] [2024-06-27 18:16:31,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:31,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:16:31,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:31,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:16:31,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:16:31,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:16:31,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 343 transitions, 3561 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:31,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:31,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:16:31,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:32,975 INFO L124 PetriNetUnfolderBase]: 3387/7752 cut-off events. [2024-06-27 18:16:32,976 INFO L125 PetriNetUnfolderBase]: For 251100/251103 co-relation queries the response was YES. [2024-06-27 18:16:33,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35111 conditions, 7752 events. 3387/7752 cut-off events. For 251100/251103 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 73492 event pairs, 1517 based on Foata normal form. 2/7250 useless extension candidates. Maximal degree in co-relation 34912. Up to 6090 conditions per place. [2024-06-27 18:16:33,092 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 306 selfloop transitions, 52 changer transitions 0/367 dead transitions. [2024-06-27 18:16:33,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 367 transitions, 4415 flow [2024-06-27 18:16:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:16:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:16:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:16:33,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:16:33,093 INFO L175 Difference]: Start difference. First operand has 443 places, 343 transitions, 3561 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:16:33,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 367 transitions, 4415 flow [2024-06-27 18:16:36,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 367 transitions, 4245 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 18:16:36,109 INFO L231 Difference]: Finished difference. Result has 445 places, 344 transitions, 3549 flow [2024-06-27 18:16:36,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3549, PETRI_PLACES=445, PETRI_TRANSITIONS=344} [2024-06-27 18:16:36,110 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-27 18:16:36,110 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 344 transitions, 3549 flow [2024-06-27 18:16:36,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:36,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:36,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:36,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 18:16:36,110 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:36,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:36,111 INFO L85 PathProgramCache]: Analyzing trace with hash -255858227, now seen corresponding path program 22 times [2024-06-27 18:16:36,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:36,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558704133] [2024-06-27 18:16:36,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:36,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:37,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:37,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558704133] [2024-06-27 18:16:37,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558704133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:37,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:37,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:16:37,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591573499] [2024-06-27 18:16:37,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:37,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:16:37,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:37,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:16:37,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:16:37,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:16:37,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 344 transitions, 3549 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:37,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:37,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:16:37,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:39,436 INFO L124 PetriNetUnfolderBase]: 3424/7829 cut-off events. [2024-06-27 18:16:39,436 INFO L125 PetriNetUnfolderBase]: For 285117/285120 co-relation queries the response was YES. [2024-06-27 18:16:39,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36092 conditions, 7829 events. 3424/7829 cut-off events. For 285117/285120 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 74299 event pairs, 1515 based on Foata normal form. 2/7326 useless extension candidates. Maximal degree in co-relation 35892. Up to 6060 conditions per place. [2024-06-27 18:16:39,553 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 310 selfloop transitions, 55 changer transitions 0/374 dead transitions. [2024-06-27 18:16:39,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 374 transitions, 4805 flow [2024-06-27 18:16:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:16:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:16:39,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:16:39,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:16:39,555 INFO L175 Difference]: Start difference. First operand has 445 places, 344 transitions, 3549 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:16:39,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 374 transitions, 4805 flow [2024-06-27 18:16:43,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 374 transitions, 4657 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 18:16:43,127 INFO L231 Difference]: Finished difference. Result has 447 places, 346 transitions, 3617 flow [2024-06-27 18:16:43,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3617, PETRI_PLACES=447, PETRI_TRANSITIONS=346} [2024-06-27 18:16:43,128 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2024-06-27 18:16:43,128 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 346 transitions, 3617 flow [2024-06-27 18:16:43,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:43,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:43,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:43,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 18:16:43,129 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:43,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1216985335, now seen corresponding path program 23 times [2024-06-27 18:16:43,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:43,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225158306] [2024-06-27 18:16:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:43,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:44,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:44,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225158306] [2024-06-27 18:16:44,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225158306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:44,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:44,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:16:44,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001876361] [2024-06-27 18:16:44,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:44,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:16:44,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:44,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:16:44,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:16:44,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:16:44,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 346 transitions, 3617 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:44,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:44,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:16:44,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:46,417 INFO L124 PetriNetUnfolderBase]: 3495/8020 cut-off events. [2024-06-27 18:16:46,417 INFO L125 PetriNetUnfolderBase]: For 394835/394835 co-relation queries the response was YES. [2024-06-27 18:16:46,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37013 conditions, 8020 events. 3495/8020 cut-off events. For 394835/394835 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 76594 event pairs, 1559 based on Foata normal form. 10/7512 useless extension candidates. Maximal degree in co-relation 36812. Up to 6285 conditions per place. [2024-06-27 18:16:46,533 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 336 selfloop transitions, 28 changer transitions 0/373 dead transitions. [2024-06-27 18:16:46,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 373 transitions, 4541 flow [2024-06-27 18:16:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:16:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:16:46,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:16:46,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 18:16:46,534 INFO L175 Difference]: Start difference. First operand has 447 places, 346 transitions, 3617 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:16:46,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 373 transitions, 4541 flow [2024-06-27 18:16:49,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 373 transitions, 4417 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:49,454 INFO L231 Difference]: Finished difference. Result has 451 places, 347 transitions, 3609 flow [2024-06-27 18:16:49,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3493, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3609, PETRI_PLACES=451, PETRI_TRANSITIONS=347} [2024-06-27 18:16:49,455 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2024-06-27 18:16:49,455 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 347 transitions, 3609 flow [2024-06-27 18:16:49,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:49,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:49,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:49,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 18:16:49,455 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:49,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:49,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1269348105, now seen corresponding path program 24 times [2024-06-27 18:16:49,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:49,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881733183] [2024-06-27 18:16:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:49,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:50,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:50,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881733183] [2024-06-27 18:16:50,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881733183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:50,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:50,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:16:50,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723482113] [2024-06-27 18:16:50,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:50,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:16:50,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:50,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:16:50,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:16:50,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:16:50,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 347 transitions, 3609 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:50,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:50,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:16:50,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:52,739 INFO L124 PetriNetUnfolderBase]: 3549/8164 cut-off events. [2024-06-27 18:16:52,739 INFO L125 PetriNetUnfolderBase]: For 368742/368745 co-relation queries the response was YES. [2024-06-27 18:16:52,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37511 conditions, 8164 events. 3549/8164 cut-off events. For 368742/368745 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 78271 event pairs, 1605 based on Foata normal form. 8/7642 useless extension candidates. Maximal degree in co-relation 37308. Up to 6262 conditions per place. [2024-06-27 18:16:52,861 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 333 selfloop transitions, 34 changer transitions 0/376 dead transitions. [2024-06-27 18:16:52,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 376 transitions, 4560 flow [2024-06-27 18:16:52,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:16:52,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:16:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:16:52,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 18:16:52,862 INFO L175 Difference]: Start difference. First operand has 451 places, 347 transitions, 3609 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:16:52,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 376 transitions, 4560 flow [2024-06-27 18:16:55,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 376 transitions, 4462 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 18:16:55,904 INFO L231 Difference]: Finished difference. Result has 454 places, 348 transitions, 3600 flow [2024-06-27 18:16:55,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3511, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3600, PETRI_PLACES=454, PETRI_TRANSITIONS=348} [2024-06-27 18:16:55,905 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-27 18:16:55,905 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 348 transitions, 3600 flow [2024-06-27 18:16:55,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:55,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:55,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:55,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 18:16:55,905 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:55,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:55,906 INFO L85 PathProgramCache]: Analyzing trace with hash -2034234645, now seen corresponding path program 25 times [2024-06-27 18:16:55,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:55,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909866733] [2024-06-27 18:16:55,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:55,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:56,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:56,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909866733] [2024-06-27 18:16:56,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909866733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:56,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:56,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:16:56,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374067538] [2024-06-27 18:16:56,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:56,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:16:56,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:56,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:16:56,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:16:57,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:16:57,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 348 transitions, 3600 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:57,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:57,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:16:57,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:59,102 INFO L124 PetriNetUnfolderBase]: 3620/8315 cut-off events. [2024-06-27 18:16:59,102 INFO L125 PetriNetUnfolderBase]: For 406345/406348 co-relation queries the response was YES. [2024-06-27 18:16:59,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38282 conditions, 8315 events. 3620/8315 cut-off events. For 406345/406348 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 79998 event pairs, 1646 based on Foata normal form. 10/7791 useless extension candidates. Maximal degree in co-relation 38077. Up to 5983 conditions per place. [2024-06-27 18:16:59,263 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 221 selfloop transitions, 145 changer transitions 0/375 dead transitions. [2024-06-27 18:16:59,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 375 transitions, 4530 flow [2024-06-27 18:16:59,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:16:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:16:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 18:16:59,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-27 18:16:59,265 INFO L175 Difference]: Start difference. First operand has 454 places, 348 transitions, 3600 flow. Second operand 11 states and 195 transitions. [2024-06-27 18:16:59,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 375 transitions, 4530 flow [2024-06-27 18:17:02,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 375 transitions, 4469 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:02,401 INFO L231 Difference]: Finished difference. Result has 457 places, 349 transitions, 3891 flow [2024-06-27 18:17:02,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3539, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3891, PETRI_PLACES=457, PETRI_TRANSITIONS=349} [2024-06-27 18:17:02,402 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 416 predicate places. [2024-06-27 18:17:02,402 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 349 transitions, 3891 flow [2024-06-27 18:17:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:02,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:02,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:02,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 18:17:02,403 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:02,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:02,403 INFO L85 PathProgramCache]: Analyzing trace with hash 849673, now seen corresponding path program 26 times [2024-06-27 18:17:02,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:02,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561669379] [2024-06-27 18:17:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:02,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:03,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:03,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561669379] [2024-06-27 18:17:03,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561669379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:03,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:03,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007370174] [2024-06-27 18:17:03,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:03,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:03,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:03,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:03,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:03,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:17:03,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 349 transitions, 3891 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:03,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:03,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:17:03,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:05,499 INFO L124 PetriNetUnfolderBase]: 3671/8454 cut-off events. [2024-06-27 18:17:05,499 INFO L125 PetriNetUnfolderBase]: For 389722/389725 co-relation queries the response was YES. [2024-06-27 18:17:05,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39125 conditions, 8454 events. 3671/8454 cut-off events. For 389722/389725 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 81678 event pairs, 1677 based on Foata normal form. 10/7920 useless extension candidates. Maximal degree in co-relation 38919. Up to 6463 conditions per place. [2024-06-27 18:17:05,629 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 294 selfloop transitions, 72 changer transitions 0/375 dead transitions. [2024-06-27 18:17:05,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 375 transitions, 4767 flow [2024-06-27 18:17:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 18:17:05,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-27 18:17:05,631 INFO L175 Difference]: Start difference. First operand has 457 places, 349 transitions, 3891 flow. Second operand 11 states and 190 transitions. [2024-06-27 18:17:05,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 375 transitions, 4767 flow [2024-06-27 18:17:08,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 375 transitions, 4395 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:08,893 INFO L231 Difference]: Finished difference. Result has 459 places, 349 transitions, 3669 flow [2024-06-27 18:17:08,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3519, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3669, PETRI_PLACES=459, PETRI_TRANSITIONS=349} [2024-06-27 18:17:08,894 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-27 18:17:08,894 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 349 transitions, 3669 flow [2024-06-27 18:17:08,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:08,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:08,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:08,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 18:17:08,895 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:08,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2112934063, now seen corresponding path program 27 times [2024-06-27 18:17:08,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:08,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54472104] [2024-06-27 18:17:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:08,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:09,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:09,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54472104] [2024-06-27 18:17:09,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54472104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:09,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:09,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:09,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095577947] [2024-06-27 18:17:09,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:09,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:09,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:09,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:09,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:10,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:17:10,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 349 transitions, 3669 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:10,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:10,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:17:10,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:12,279 INFO L124 PetriNetUnfolderBase]: 3725/8596 cut-off events. [2024-06-27 18:17:12,279 INFO L125 PetriNetUnfolderBase]: For 356743/356746 co-relation queries the response was YES. [2024-06-27 18:17:12,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39020 conditions, 8596 events. 3725/8596 cut-off events. For 356743/356746 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 83431 event pairs, 1677 based on Foata normal form. 8/8053 useless extension candidates. Maximal degree in co-relation 38813. Up to 6473 conditions per place. [2024-06-27 18:17:12,404 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 341 selfloop transitions, 34 changer transitions 0/384 dead transitions. [2024-06-27 18:17:12,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 384 transitions, 4714 flow [2024-06-27 18:17:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:12,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 18:17:12,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 18:17:12,405 INFO L175 Difference]: Start difference. First operand has 459 places, 349 transitions, 3669 flow. Second operand 11 states and 188 transitions. [2024-06-27 18:17:12,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 384 transitions, 4714 flow [2024-06-27 18:17:15,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 384 transitions, 4570 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:15,520 INFO L231 Difference]: Finished difference. Result has 461 places, 349 transitions, 3596 flow [2024-06-27 18:17:15,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3525, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3596, PETRI_PLACES=461, PETRI_TRANSITIONS=349} [2024-06-27 18:17:15,521 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-27 18:17:15,521 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 349 transitions, 3596 flow [2024-06-27 18:17:15,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:15,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:15,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:15,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 18:17:15,522 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:15,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:15,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2107427533, now seen corresponding path program 28 times [2024-06-27 18:17:15,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:15,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355212499] [2024-06-27 18:17:15,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:15,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:16,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:16,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355212499] [2024-06-27 18:17:16,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355212499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:16,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:16,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:16,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893998928] [2024-06-27 18:17:16,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:16,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:16,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:16,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:16,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:16,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:17:16,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 349 transitions, 3596 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:16,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:16,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:17:16,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:18,882 INFO L124 PetriNetUnfolderBase]: 3779/8689 cut-off events. [2024-06-27 18:17:18,883 INFO L125 PetriNetUnfolderBase]: For 364794/364797 co-relation queries the response was YES. [2024-06-27 18:17:19,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39579 conditions, 8689 events. 3779/8689 cut-off events. For 364794/364797 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 84417 event pairs, 1710 based on Foata normal form. 8/8146 useless extension candidates. Maximal degree in co-relation 39371. Up to 6799 conditions per place. [2024-06-27 18:17:19,042 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 343 selfloop transitions, 31 changer transitions 0/383 dead transitions. [2024-06-27 18:17:19,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 383 transitions, 4534 flow [2024-06-27 18:17:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:17:19,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:17:19,044 INFO L175 Difference]: Start difference. First operand has 461 places, 349 transitions, 3596 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:17:19,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 383 transitions, 4534 flow [2024-06-27 18:17:22,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 383 transitions, 4467 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:22,958 INFO L231 Difference]: Finished difference. Result has 463 places, 349 transitions, 3594 flow [2024-06-27 18:17:22,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3529, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3594, PETRI_PLACES=463, PETRI_TRANSITIONS=349} [2024-06-27 18:17:22,959 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 422 predicate places. [2024-06-27 18:17:22,959 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 349 transitions, 3594 flow [2024-06-27 18:17:22,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:22,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:22,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:22,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 18:17:22,960 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:22,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:22,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1463085705, now seen corresponding path program 29 times [2024-06-27 18:17:22,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:22,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517957503] [2024-06-27 18:17:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:22,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:24,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:24,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517957503] [2024-06-27 18:17:24,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517957503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:24,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:24,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445083121] [2024-06-27 18:17:24,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:24,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:24,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:24,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:24,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:24,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:17:24,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 349 transitions, 3594 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:24,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:24,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:17:24,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:26,828 INFO L124 PetriNetUnfolderBase]: 3796/8746 cut-off events. [2024-06-27 18:17:26,828 INFO L125 PetriNetUnfolderBase]: For 296628/296631 co-relation queries the response was YES. [2024-06-27 18:17:26,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40078 conditions, 8746 events. 3796/8746 cut-off events. For 296628/296631 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 85211 event pairs, 1784 based on Foata normal form. 2/8191 useless extension candidates. Maximal degree in co-relation 39869. Up to 6925 conditions per place. [2024-06-27 18:17:26,948 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 315 selfloop transitions, 49 changer transitions 0/373 dead transitions. [2024-06-27 18:17:26,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 373 transitions, 4468 flow [2024-06-27 18:17:26,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:26,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:26,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:17:26,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:17:26,950 INFO L175 Difference]: Start difference. First operand has 463 places, 349 transitions, 3594 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:17:26,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 373 transitions, 4468 flow [2024-06-27 18:17:30,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 373 transitions, 4407 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:30,423 INFO L231 Difference]: Finished difference. Result has 465 places, 350 transitions, 3693 flow [2024-06-27 18:17:30,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3533, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3693, PETRI_PLACES=465, PETRI_TRANSITIONS=350} [2024-06-27 18:17:30,423 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-27 18:17:30,424 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 350 transitions, 3693 flow [2024-06-27 18:17:30,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:30,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:30,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:30,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 18:17:30,424 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:30,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:30,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1463080125, now seen corresponding path program 30 times [2024-06-27 18:17:30,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:30,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688327552] [2024-06-27 18:17:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:30,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:31,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:31,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688327552] [2024-06-27 18:17:31,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688327552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:31,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:31,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:31,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857695277] [2024-06-27 18:17:31,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:31,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:31,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:31,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:31,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:31,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:17:31,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 350 transitions, 3693 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:31,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:31,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:17:31,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:34,193 INFO L124 PetriNetUnfolderBase]: 3897/9010 cut-off events. [2024-06-27 18:17:34,193 INFO L125 PetriNetUnfolderBase]: For 454958/454961 co-relation queries the response was YES. [2024-06-27 18:17:34,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43728 conditions, 9010 events. 3897/9010 cut-off events. For 454958/454961 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 88444 event pairs, 1832 based on Foata normal form. 2/8442 useless extension candidates. Maximal degree in co-relation 43518. Up to 6908 conditions per place. [2024-06-27 18:17:34,325 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 323 selfloop transitions, 51 changer transitions 0/383 dead transitions. [2024-06-27 18:17:34,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 383 transitions, 5053 flow [2024-06-27 18:17:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:17:34,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 18:17:34,326 INFO L175 Difference]: Start difference. First operand has 465 places, 350 transitions, 3693 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:17:34,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 383 transitions, 5053 flow [2024-06-27 18:17:38,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 383 transitions, 4903 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:38,387 INFO L231 Difference]: Finished difference. Result has 467 places, 352 transitions, 3767 flow [2024-06-27 18:17:38,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3543, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3767, PETRI_PLACES=467, PETRI_TRANSITIONS=352} [2024-06-27 18:17:38,387 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-27 18:17:38,387 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 352 transitions, 3767 flow [2024-06-27 18:17:38,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:38,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:38,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:38,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 18:17:38,388 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:38,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:38,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2004232141, now seen corresponding path program 31 times [2024-06-27 18:17:38,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:38,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681802058] [2024-06-27 18:17:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:38,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:39,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:39,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681802058] [2024-06-27 18:17:39,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681802058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:39,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:39,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:39,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315030866] [2024-06-27 18:17:39,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:39,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:39,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:39,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:39,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:39,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:17:39,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 352 transitions, 3767 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:39,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:39,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:17:39,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:42,488 INFO L124 PetriNetUnfolderBase]: 3914/9041 cut-off events. [2024-06-27 18:17:42,489 INFO L125 PetriNetUnfolderBase]: For 461018/461021 co-relation queries the response was YES. [2024-06-27 18:17:42,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44036 conditions, 9041 events. 3914/9041 cut-off events. For 461018/461021 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 88791 event pairs, 1854 based on Foata normal form. 2/8469 useless extension candidates. Maximal degree in co-relation 43825. Up to 6683 conditions per place. [2024-06-27 18:17:42,644 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 211 selfloop transitions, 156 changer transitions 0/376 dead transitions. [2024-06-27 18:17:42,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 376 transitions, 4651 flow [2024-06-27 18:17:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:17:42,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:17:42,645 INFO L175 Difference]: Start difference. First operand has 467 places, 352 transitions, 3767 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:17:42,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 376 transitions, 4651 flow [2024-06-27 18:17:46,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 376 transitions, 4520 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:46,878 INFO L231 Difference]: Finished difference. Result has 471 places, 353 transitions, 4014 flow [2024-06-27 18:17:46,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3636, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4014, PETRI_PLACES=471, PETRI_TRANSITIONS=353} [2024-06-27 18:17:46,878 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-27 18:17:46,878 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 353 transitions, 4014 flow [2024-06-27 18:17:46,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:46,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:46,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:46,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 18:17:46,879 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:46,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1272663989, now seen corresponding path program 32 times [2024-06-27 18:17:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:46,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221779181] [2024-06-27 18:17:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:46,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:47,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:47,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221779181] [2024-06-27 18:17:47,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221779181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:47,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:47,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:47,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581549621] [2024-06-27 18:17:47,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:47,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:47,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:47,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:48,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:17:48,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 353 transitions, 4014 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:48,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:48,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:17:48,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:50,680 INFO L124 PetriNetUnfolderBase]: 3999/9267 cut-off events. [2024-06-27 18:17:50,680 INFO L125 PetriNetUnfolderBase]: For 586768/586771 co-relation queries the response was YES. [2024-06-27 18:17:50,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46986 conditions, 9267 events. 3999/9267 cut-off events. For 586768/586771 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 91699 event pairs, 1890 based on Foata normal form. 2/8688 useless extension candidates. Maximal degree in co-relation 46773. Up to 6360 conditions per place. [2024-06-27 18:17:50,838 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 217 selfloop transitions, 160 changer transitions 0/386 dead transitions. [2024-06-27 18:17:50,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 386 transitions, 5392 flow [2024-06-27 18:17:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 18:17:50,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-27 18:17:50,839 INFO L175 Difference]: Start difference. First operand has 471 places, 353 transitions, 4014 flow. Second operand 11 states and 197 transitions. [2024-06-27 18:17:50,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 386 transitions, 5392 flow [2024-06-27 18:17:55,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 386 transitions, 5024 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:55,107 INFO L231 Difference]: Finished difference. Result has 473 places, 355 transitions, 4096 flow [2024-06-27 18:17:55,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3646, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4096, PETRI_PLACES=473, PETRI_TRANSITIONS=355} [2024-06-27 18:17:55,107 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-27 18:17:55,107 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 355 transitions, 4096 flow [2024-06-27 18:17:55,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:55,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:55,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:55,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 18:17:55,108 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:55,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2011381981, now seen corresponding path program 33 times [2024-06-27 18:17:55,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:55,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989514042] [2024-06-27 18:17:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:55,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:56,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:56,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989514042] [2024-06-27 18:17:56,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989514042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:56,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:56,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:56,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529189884] [2024-06-27 18:17:56,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:56,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:56,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:56,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:56,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:17:56,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 355 transitions, 4096 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:56,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:56,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:17:56,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:59,156 INFO L124 PetriNetUnfolderBase]: 3986/9227 cut-off events. [2024-06-27 18:17:59,156 INFO L125 PetriNetUnfolderBase]: For 560327/560330 co-relation queries the response was YES. [2024-06-27 18:17:59,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44930 conditions, 9227 events. 3986/9227 cut-off events. For 560327/560330 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 91093 event pairs, 1884 based on Foata normal form. 10/8649 useless extension candidates. Maximal degree in co-relation 44716. Up to 6709 conditions per place. [2024-06-27 18:17:59,295 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 224 selfloop transitions, 148 changer transitions 0/381 dead transitions. [2024-06-27 18:17:59,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 381 transitions, 4984 flow [2024-06-27 18:17:59,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:59,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 18:17:59,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 18:17:59,313 INFO L175 Difference]: Start difference. First operand has 473 places, 355 transitions, 4096 flow. Second operand 11 states and 193 transitions. [2024-06-27 18:17:59,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 381 transitions, 4984 flow [2024-06-27 18:18:03,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 381 transitions, 4653 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:03,407 INFO L231 Difference]: Finished difference. Result has 476 places, 355 transitions, 4067 flow [2024-06-27 18:18:03,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3765, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4067, PETRI_PLACES=476, PETRI_TRANSITIONS=355} [2024-06-27 18:18:03,407 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 435 predicate places. [2024-06-27 18:18:03,408 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 355 transitions, 4067 flow [2024-06-27 18:18:03,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:03,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:03,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:03,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 18:18:03,408 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:03,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:03,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1470437355, now seen corresponding path program 34 times [2024-06-27 18:18:03,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:03,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39212762] [2024-06-27 18:18:03,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:03,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:04,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:04,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39212762] [2024-06-27 18:18:04,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39212762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:04,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:04,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:04,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467704498] [2024-06-27 18:18:04,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:04,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:04,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:04,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:04,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:04,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:18:04,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 355 transitions, 4067 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:04,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:04,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:18:04,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:07,278 INFO L124 PetriNetUnfolderBase]: 3973/9204 cut-off events. [2024-06-27 18:18:07,279 INFO L125 PetriNetUnfolderBase]: For 399161/399164 co-relation queries the response was YES. [2024-06-27 18:18:07,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42384 conditions, 9204 events. 3973/9204 cut-off events. For 399161/399164 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 90835 event pairs, 1875 based on Foata normal form. 10/8626 useless extension candidates. Maximal degree in co-relation 42169. Up to 7154 conditions per place. [2024-06-27 18:18:07,429 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 323 selfloop transitions, 49 changer transitions 0/381 dead transitions. [2024-06-27 18:18:07,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 381 transitions, 4955 flow [2024-06-27 18:18:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:07,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:18:07,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:18:07,430 INFO L175 Difference]: Start difference. First operand has 476 places, 355 transitions, 4067 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:18:07,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 381 transitions, 4955 flow [2024-06-27 18:18:11,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 381 transitions, 4603 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 18:18:11,403 INFO L231 Difference]: Finished difference. Result has 477 places, 355 transitions, 3819 flow [2024-06-27 18:18:11,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3715, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3819, PETRI_PLACES=477, PETRI_TRANSITIONS=355} [2024-06-27 18:18:11,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 436 predicate places. [2024-06-27 18:18:11,404 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 355 transitions, 3819 flow [2024-06-27 18:18:11,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:11,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:11,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:11,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 18:18:11,404 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:11,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:11,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1463295451, now seen corresponding path program 15 times [2024-06-27 18:18:11,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:11,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917863158] [2024-06-27 18:18:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:11,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:13,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:13,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917863158] [2024-06-27 18:18:13,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917863158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:13,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:13,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:18:13,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355154424] [2024-06-27 18:18:13,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:13,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:18:13,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:13,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:18:13,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:18:13,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:18:13,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 355 transitions, 3819 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:13,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:13,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:18:13,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:16,333 INFO L124 PetriNetUnfolderBase]: 4027/9364 cut-off events. [2024-06-27 18:18:16,333 INFO L125 PetriNetUnfolderBase]: For 369859/369862 co-relation queries the response was YES. [2024-06-27 18:18:16,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42325 conditions, 9364 events. 4027/9364 cut-off events. For 369859/369862 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 93044 event pairs, 1907 based on Foata normal form. 8/8769 useless extension candidates. Maximal degree in co-relation 42109. Up to 7305 conditions per place. [2024-06-27 18:18:16,473 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 333 selfloop transitions, 41 changer transitions 0/383 dead transitions. [2024-06-27 18:18:16,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 383 transitions, 4719 flow [2024-06-27 18:18:16,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:18:16,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:18:16,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-27 18:18:16,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436936936936937 [2024-06-27 18:18:16,475 INFO L175 Difference]: Start difference. First operand has 477 places, 355 transitions, 3819 flow. Second operand 12 states and 197 transitions. [2024-06-27 18:18:16,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 383 transitions, 4719 flow [2024-06-27 18:18:20,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 383 transitions, 4615 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:18:20,197 INFO L231 Difference]: Finished difference. Result has 479 places, 355 transitions, 3801 flow [2024-06-27 18:18:20,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3715, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3801, PETRI_PLACES=479, PETRI_TRANSITIONS=355} [2024-06-27 18:18:20,197 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-27 18:18:20,198 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 355 transitions, 3801 flow [2024-06-27 18:18:20,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:20,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:20,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:20,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 18:18:20,198 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:20,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:20,198 INFO L85 PathProgramCache]: Analyzing trace with hash -248493061, now seen corresponding path program 16 times [2024-06-27 18:18:20,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:20,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844683291] [2024-06-27 18:18:20,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:20,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:22,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:22,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844683291] [2024-06-27 18:18:22,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844683291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:22,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:22,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:18:22,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734556488] [2024-06-27 18:18:22,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:22,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:18:22,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:22,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:18:22,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:18:22,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:18:22,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 355 transitions, 3801 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:22,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:22,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:18:22,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:25,326 INFO L124 PetriNetUnfolderBase]: 4081/9492 cut-off events. [2024-06-27 18:18:25,326 INFO L125 PetriNetUnfolderBase]: For 375017/375020 co-relation queries the response was YES. [2024-06-27 18:18:25,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42889 conditions, 9492 events. 4081/9492 cut-off events. For 375017/375020 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 94714 event pairs, 1939 based on Foata normal form. 8/8891 useless extension candidates. Maximal degree in co-relation 42672. Up to 7370 conditions per place. [2024-06-27 18:18:25,475 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 322 selfloop transitions, 52 changer transitions 0/383 dead transitions. [2024-06-27 18:18:25,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 383 transitions, 4701 flow [2024-06-27 18:18:25,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:18:25,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:18:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-27 18:18:25,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-27 18:18:25,477 INFO L175 Difference]: Start difference. First operand has 479 places, 355 transitions, 3801 flow. Second operand 12 states and 201 transitions. [2024-06-27 18:18:25,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 383 transitions, 4701 flow [2024-06-27 18:18:29,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 383 transitions, 4621 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:18:29,541 INFO L231 Difference]: Finished difference. Result has 481 places, 355 transitions, 3829 flow [2024-06-27 18:18:29,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3721, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3829, PETRI_PLACES=481, PETRI_TRANSITIONS=355} [2024-06-27 18:18:29,541 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 440 predicate places. [2024-06-27 18:18:29,541 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 355 transitions, 3829 flow [2024-06-27 18:18:29,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:29,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:29,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:29,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 18:18:29,542 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:29,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1470445291, now seen corresponding path program 17 times [2024-06-27 18:18:29,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:29,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991013268] [2024-06-27 18:18:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:29,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:31,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:31,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991013268] [2024-06-27 18:18:31,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991013268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:31,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:31,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:18:31,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817097223] [2024-06-27 18:18:31,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:31,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:18:31,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:31,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:18:31,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:18:31,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:18:31,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 355 transitions, 3829 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:31,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:31,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:18:31,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:34,070 INFO L124 PetriNetUnfolderBase]: 4135/9629 cut-off events. [2024-06-27 18:18:34,071 INFO L125 PetriNetUnfolderBase]: For 381408/381411 co-relation queries the response was YES. [2024-06-27 18:18:34,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43567 conditions, 9629 events. 4135/9629 cut-off events. For 381408/381411 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 96505 event pairs, 1981 based on Foata normal form. 8/9026 useless extension candidates. Maximal degree in co-relation 43349. Up to 7366 conditions per place. [2024-06-27 18:18:34,218 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 325 selfloop transitions, 49 changer transitions 0/383 dead transitions. [2024-06-27 18:18:34,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 383 transitions, 4729 flow [2024-06-27 18:18:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:18:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:18:34,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-27 18:18:34,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-06-27 18:18:34,220 INFO L175 Difference]: Start difference. First operand has 481 places, 355 transitions, 3829 flow. Second operand 12 states and 199 transitions. [2024-06-27 18:18:34,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 383 transitions, 4729 flow