./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix031.oepc.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/mix031.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix031.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:27:29,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:27:29,738 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:27:29,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:27:29,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:27:29,766 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:27:29,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:27:29,767 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:27:29,767 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:27:29,770 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:27:29,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:27:29,771 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:27:29,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:27:29,773 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:27:29,773 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:27:29,773 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:27:29,773 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:27:29,774 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:27:29,774 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:27:29,774 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:27:29,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:27:29,775 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:27:29,775 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:27:29,776 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:27:29,776 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:27:29,776 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:27:29,776 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:27:29,777 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:27:29,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:27:29,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:27:29,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:27:29,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:27:29,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:27:29,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:27:29,779 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:27:29,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:27:29,779 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:27:29,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:27:29,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:27:29,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:27:29,780 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:27:29,780 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:27:29,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:27:29,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:27:30,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:27:30,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:27:30,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:27:30,035 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:27:30,035 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:27:30,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix031.oepc.yml/witness.yml [2024-06-27 18:27:30,165 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:27:30,166 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:27:30,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i [2024-06-27 18:27:31,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:27:31,413 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:27:31,413 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.oepc.i [2024-06-27 18:27:31,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc83a1a56/3d1338e6862d4733b5cc4e6cd3af3f88/FLAG26abee011 [2024-06-27 18:27:31,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc83a1a56/3d1338e6862d4733b5cc4e6cd3af3f88 [2024-06-27 18:27:31,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:27:31,444 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:27:31,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:27:31,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:27:31,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:27:31,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:27:30" (1/2) ... [2024-06-27 18:27:31,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e988b33 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:27:31, skipping insertion in model container [2024-06-27 18:27:31,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:27:30" (1/2) ... [2024-06-27 18:27:31,453 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d518200 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:27:31, skipping insertion in model container [2024-06-27 18:27:31,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:27:31" (2/2) ... [2024-06-27 18:27:31,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e988b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:31, skipping insertion in model container [2024-06-27 18:27:31,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:27:31" (2/2) ... [2024-06-27 18:27:31,455 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:27:31,514 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:27:31,515 INFO L97 edCorrectnessWitness]: Location invariant before [L831-L831] ((((((((((((((((((! multithreaded || a$r_buff1_thd2 == (_Bool)0) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1)) [2024-06-27 18:27:31,515 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((((! multithreaded || a$r_buff1_thd2 == (_Bool)0) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1)) [2024-06-27 18:27:31,515 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:27:31,515 INFO L106 edCorrectnessWitness]: ghost_update [L828-L828] multithreaded = 1; [2024-06-27 18:27:31,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:27:31,701 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/mix031.oepc.i[945,958] [2024-06-27 18:27:31,888 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:27:31,897 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:27:31,925 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/mix031.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:27:31,993 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:27:32,021 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:27:32,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32 WrapperNode [2024-06-27 18:27:32,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:27:32,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:27:32,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:27:32,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:27:32,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (1/1) ... [2024-06-27 18:27:32,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (1/1) ... [2024-06-27 18:27:32,059 INFO L138 Inliner]: procedures = 174, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 119 [2024-06-27 18:27:32,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:27:32,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:27:32,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:27:32,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:27:32,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (1/1) ... [2024-06-27 18:27:32,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (1/1) ... [2024-06-27 18:27:32,074 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (1/1) ... [2024-06-27 18:27:32,106 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 18:27:32,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (1/1) ... [2024-06-27 18:27:32,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (1/1) ... [2024-06-27 18:27:32,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (1/1) ... [2024-06-27 18:27:32,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (1/1) ... [2024-06-27 18:27:32,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (1/1) ... [2024-06-27 18:27:32,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (1/1) ... [2024-06-27 18:27:32,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:27:32,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:27:32,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:27:32,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:27:32,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (1/1) ... [2024-06-27 18:27:32,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:27:32,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:27:32,180 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 18:27:32,193 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 18:27:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:27:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:27:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:27:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:27:32,224 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:27:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:27:32,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:27:32,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:27:32,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:27:32,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:27:32,226 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 18:27:32,339 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:27:32,341 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:27:32,590 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:27:32,590 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:27:32,723 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:27:32,723 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:27:32,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:27:32 BoogieIcfgContainer [2024-06-27 18:27:32,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:27:32,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:27:32,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:27:32,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:27:32,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:27:30" (1/4) ... [2024-06-27 18:27:32,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afa856a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:27:32, skipping insertion in model container [2024-06-27 18:27:32,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:27:31" (2/4) ... [2024-06-27 18:27:32,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afa856a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:27:32, skipping insertion in model container [2024-06-27 18:27:32,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:32" (3/4) ... [2024-06-27 18:27:32,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afa856a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:27:32, skipping insertion in model container [2024-06-27 18:27:32,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:27:32" (4/4) ... [2024-06-27 18:27:32,732 INFO L112 eAbstractionObserver]: Analyzing ICFG mix031.oepc.i [2024-06-27 18:27:32,748 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:27:32,749 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:27:32,749 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:27:32,792 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:27:32,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 86 flow [2024-06-27 18:27:32,852 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-06-27 18:27:32,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:27:32,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-06-27 18:27:32,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 39 transitions, 86 flow [2024-06-27 18:27:32,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 37 transitions, 80 flow [2024-06-27 18:27:32,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:27:32,888 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;@5d485a51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:27:32,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:27:32,892 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:27:32,892 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:27:32,892 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:27:32,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:32,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:27:32,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:32,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash 324424917, now seen corresponding path program 1 times [2024-06-27 18:27:32,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:32,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616667602] [2024-06-27 18:27:32,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:32,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:33,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:33,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616667602] [2024-06-27 18:27:33,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616667602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:33,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:33,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:27:33,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293877034] [2024-06-27 18:27:33,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:33,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:27:33,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:33,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:27:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:27:33,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-06-27 18:27:33,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 80 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 18:27:33,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:33,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-06-27 18:27:33,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:33,838 INFO L124 PetriNetUnfolderBase]: 559/986 cut-off events. [2024-06-27 18:27:33,839 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 18:27:33,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 986 events. 559/986 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5181 event pairs, 217 based on Foata normal form. 50/961 useless extension candidates. Maximal degree in co-relation 1924. Up to 920 conditions per place. [2024-06-27 18:27:33,847 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 31 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-06-27 18:27:33,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 173 flow [2024-06-27 18:27:33,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:27:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:27:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-27 18:27:33,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-06-27 18:27:33,858 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 80 flow. Second operand 3 states and 81 transitions. [2024-06-27 18:27:33,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 173 flow [2024-06-27 18:27:33,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:27:33,864 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 104 flow [2024-06-27 18:27:33,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-27 18:27:33,868 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-27 18:27:33,868 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 104 flow [2024-06-27 18:27:33,869 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 18:27:33,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:33,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:27:33,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:27:33,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:33,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:33,870 INFO L85 PathProgramCache]: Analyzing trace with hash 324425326, now seen corresponding path program 1 times [2024-06-27 18:27:33,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:33,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116333588] [2024-06-27 18:27:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:33,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:33,937 INFO 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 18:27:33,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:33,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116333588] [2024-06-27 18:27:33,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116333588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:33,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:33,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:27:33,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136905266] [2024-06-27 18:27:33,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:33,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:27:33,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:33,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:27:33,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:27:33,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-06-27 18:27:33,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 18:27:33,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:33,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-06-27 18:27:33,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:34,012 INFO L124 PetriNetUnfolderBase]: 152/383 cut-off events. [2024-06-27 18:27:34,013 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-27 18:27:34,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 383 events. 152/383 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2036 event pairs, 52 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 715. Up to 227 conditions per place. [2024-06-27 18:27:34,015 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 23 selfloop transitions, 3 changer transitions 2/48 dead transitions. [2024-06-27 18:27:34,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 175 flow [2024-06-27 18:27:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:27:34,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:27:34,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-27 18:27:34,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-06-27 18:27:34,016 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 104 flow. Second operand 3 states and 91 transitions. [2024-06-27 18:27:34,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 175 flow [2024-06-27 18:27:34,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:27:34,018 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 96 flow [2024-06-27 18:27:34,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-06-27 18:27:34,019 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-27 18:27:34,019 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 96 flow [2024-06-27 18:27:34,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 18:27:34,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:34,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:34,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:27:34,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:34,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:34,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1760222765, now seen corresponding path program 1 times [2024-06-27 18:27:34,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943559291] [2024-06-27 18:27:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:34,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:34,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:34,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943559291] [2024-06-27 18:27:34,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943559291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:34,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:34,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:27:34,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085149465] [2024-06-27 18:27:34,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:34,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:27:34,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:34,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:27:34,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:27:34,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-06-27 18:27:34,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:34,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:34,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-06-27 18:27:34,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:34,669 INFO L124 PetriNetUnfolderBase]: 402/807 cut-off events. [2024-06-27 18:27:34,669 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-06-27 18:27:34,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1672 conditions, 807 events. 402/807 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4442 event pairs, 191 based on Foata normal form. 2/767 useless extension candidates. Maximal degree in co-relation 1659. Up to 658 conditions per place. [2024-06-27 18:27:34,673 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 35 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-06-27 18:27:34,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 224 flow [2024-06-27 18:27:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:27:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:27:34,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-06-27 18:27:34,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217948717948718 [2024-06-27 18:27:34,679 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 96 flow. Second operand 4 states and 97 transitions. [2024-06-27 18:27:34,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 224 flow [2024-06-27 18:27:34,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:27:34,681 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 139 flow [2024-06-27 18:27:34,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-27 18:27:34,682 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-27 18:27:34,682 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 139 flow [2024-06-27 18:27:34,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:34,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:34,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:34,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:27:34,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:34,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:34,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1267670618, now seen corresponding path program 1 times [2024-06-27 18:27:34,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:34,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597953599] [2024-06-27 18:27:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:34,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:35,113 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 18:27:35,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597953599] [2024-06-27 18:27:35,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597953599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:35,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:35,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:27:35,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310665285] [2024-06-27 18:27:35,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:35,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:27:35,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:35,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:27:35,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:27:35,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 18:27:35,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:35,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:35,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 18:27:35,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:35,311 INFO L124 PetriNetUnfolderBase]: 477/966 cut-off events. [2024-06-27 18:27:35,312 INFO L125 PetriNetUnfolderBase]: For 373/373 co-relation queries the response was YES. [2024-06-27 18:27:35,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 966 events. 477/966 cut-off events. For 373/373 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5414 event pairs, 281 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 2129. Up to 764 conditions per place. [2024-06-27 18:27:35,316 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 43 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2024-06-27 18:27:35,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 297 flow [2024-06-27 18:27:35,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:27:35,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:27:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-27 18:27:35,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5948717948717949 [2024-06-27 18:27:35,318 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 139 flow. Second operand 5 states and 116 transitions. [2024-06-27 18:27:35,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 297 flow [2024-06-27 18:27:35,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 290 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 18:27:35,320 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 167 flow [2024-06-27 18:27:35,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-27 18:27:35,321 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-06-27 18:27:35,321 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 167 flow [2024-06-27 18:27:35,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:35,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:35,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:35,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:27:35,321 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:35,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:35,322 INFO L85 PathProgramCache]: Analyzing trace with hash 643085010, now seen corresponding path program 1 times [2024-06-27 18:27:35,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:35,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877441691] [2024-06-27 18:27:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:35,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:35,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:35,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877441691] [2024-06-27 18:27:35,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877441691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:35,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:35,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:27:35,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193540217] [2024-06-27 18:27:35,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:35,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:27:35,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:27:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:27:35,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 18:27:35,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:35,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:35,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 18:27:35,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:35,997 INFO L124 PetriNetUnfolderBase]: 477/948 cut-off events. [2024-06-27 18:27:35,997 INFO L125 PetriNetUnfolderBase]: For 637/637 co-relation queries the response was YES. [2024-06-27 18:27:35,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 948 events. 477/948 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5252 event pairs, 162 based on Foata normal form. 2/911 useless extension candidates. Maximal degree in co-relation 2251. Up to 749 conditions per place. [2024-06-27 18:27:36,002 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 50 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2024-06-27 18:27:36,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 363 flow [2024-06-27 18:27:36,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 18:27:36,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2024-06-27 18:27:36,003 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 167 flow. Second operand 6 states and 138 transitions. [2024-06-27 18:27:36,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 363 flow [2024-06-27 18:27:36,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:27:36,006 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 191 flow [2024-06-27 18:27:36,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 18:27:36,006 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-27 18:27:36,006 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 191 flow [2024-06-27 18:27:36,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:36,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:36,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:36,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:27:36,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:36,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:36,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1768684396, now seen corresponding path program 1 times [2024-06-27 18:27:36,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:36,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722948736] [2024-06-27 18:27:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:36,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:36,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:36,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722948736] [2024-06-27 18:27:36,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722948736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:36,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:36,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:27:36,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092062622] [2024-06-27 18:27:36,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:36,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:27:36,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:36,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:27:36,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:27:36,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:27:36,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:36,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:36,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:27:36,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:36,845 INFO L124 PetriNetUnfolderBase]: 603/1218 cut-off events. [2024-06-27 18:27:36,845 INFO L125 PetriNetUnfolderBase]: For 1112/1114 co-relation queries the response was YES. [2024-06-27 18:27:36,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2966 conditions, 1218 events. 603/1218 cut-off events. For 1112/1114 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6938 event pairs, 274 based on Foata normal form. 3/1180 useless extension candidates. Maximal degree in co-relation 2947. Up to 987 conditions per place. [2024-06-27 18:27:36,852 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 41 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2024-06-27 18:27:36,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 323 flow [2024-06-27 18:27:36,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:27:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:27:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-06-27 18:27:36,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2024-06-27 18:27:36,853 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 191 flow. Second operand 5 states and 98 transitions. [2024-06-27 18:27:36,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 323 flow [2024-06-27 18:27:36,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 300 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:36,858 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 200 flow [2024-06-27 18:27:36,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 18:27:36,860 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-06-27 18:27:36,860 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 200 flow [2024-06-27 18:27:36,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:36,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:36,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:36,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:27:36,861 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:36,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:36,862 INFO L85 PathProgramCache]: Analyzing trace with hash -470546479, now seen corresponding path program 1 times [2024-06-27 18:27:36,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:36,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119407002] [2024-06-27 18:27:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:36,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:37,545 INFO 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 18:27:37,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:37,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119407002] [2024-06-27 18:27:37,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119407002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:37,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:37,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:37,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605864294] [2024-06-27 18:27:37,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:37,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:37,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:37,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:37,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:37,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 18:27:37,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:37,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:37,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 18:27:37,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:37,903 INFO L124 PetriNetUnfolderBase]: 547/1058 cut-off events. [2024-06-27 18:27:37,904 INFO L125 PetriNetUnfolderBase]: For 1242/1242 co-relation queries the response was YES. [2024-06-27 18:27:37,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 1058 events. 547/1058 cut-off events. For 1242/1242 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5809 event pairs, 208 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 2735. Up to 816 conditions per place. [2024-06-27 18:27:37,909 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 67 selfloop transitions, 22 changer transitions 0/99 dead transitions. [2024-06-27 18:27:37,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 552 flow [2024-06-27 18:27:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:37,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 18:27:37,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-06-27 18:27:37,910 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 200 flow. Second operand 8 states and 176 transitions. [2024-06-27 18:27:37,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 552 flow [2024-06-27 18:27:37,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 538 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 18:27:37,913 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 342 flow [2024-06-27 18:27:37,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=342, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-06-27 18:27:37,914 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-06-27 18:27:37,914 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 342 flow [2024-06-27 18:27:37,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:37,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:37,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:37,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:27:37,915 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:37,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:37,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1026807259, now seen corresponding path program 1 times [2024-06-27 18:27:37,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:37,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860336200] [2024-06-27 18:27:37,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:37,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:38,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:38,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860336200] [2024-06-27 18:27:38,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860336200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:38,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:38,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:38,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300641232] [2024-06-27 18:27:38,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:38,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:38,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:38,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:38,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:38,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:38,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 342 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 18:27:38,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:38,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:38,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:38,862 INFO L124 PetriNetUnfolderBase]: 687/1311 cut-off events. [2024-06-27 18:27:38,862 INFO L125 PetriNetUnfolderBase]: For 2210/2216 co-relation queries the response was YES. [2024-06-27 18:27:38,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3781 conditions, 1311 events. 687/1311 cut-off events. For 2210/2216 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7289 event pairs, 215 based on Foata normal form. 7/1279 useless extension candidates. Maximal degree in co-relation 3756. Up to 1114 conditions per place. [2024-06-27 18:27:38,869 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 57 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-06-27 18:27:38,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 77 transitions, 524 flow [2024-06-27 18:27:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-27 18:27:38,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 18:27:38,872 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 342 flow. Second operand 6 states and 111 transitions. [2024-06-27 18:27:38,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 77 transitions, 524 flow [2024-06-27 18:27:38,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 487 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 18:27:38,876 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 342 flow [2024-06-27 18:27:38,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-06-27 18:27:38,877 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-06-27 18:27:38,877 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 342 flow [2024-06-27 18:27:38,877 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 18:27:38,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:38,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:38,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:27:38,878 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:38,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:38,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1774805094, now seen corresponding path program 1 times [2024-06-27 18:27:38,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:38,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525362934] [2024-06-27 18:27:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:38,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525362934] [2024-06-27 18:27:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525362934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:39,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:39,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:39,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161499344] [2024-06-27 18:27:39,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:39,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:39,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:39,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:39,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:27:39,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:39,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:39,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:27:39,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:39,711 INFO L124 PetriNetUnfolderBase]: 637/1226 cut-off events. [2024-06-27 18:27:39,711 INFO L125 PetriNetUnfolderBase]: For 2540/2543 co-relation queries the response was YES. [2024-06-27 18:27:39,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3736 conditions, 1226 events. 637/1226 cut-off events. For 2540/2543 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6783 event pairs, 150 based on Foata normal form. 4/1196 useless extension candidates. Maximal degree in co-relation 3708. Up to 999 conditions per place. [2024-06-27 18:27:39,718 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 62 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2024-06-27 18:27:39,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 591 flow [2024-06-27 18:27:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-27 18:27:39,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170940170940171 [2024-06-27 18:27:39,719 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 342 flow. Second operand 6 states and 121 transitions. [2024-06-27 18:27:39,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 591 flow [2024-06-27 18:27:39,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 567 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:39,723 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 402 flow [2024-06-27 18:27:39,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-06-27 18:27:39,724 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-06-27 18:27:39,724 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 402 flow [2024-06-27 18:27:39,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:39,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:39,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:39,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:27:39,725 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:39,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:39,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1078985604, now seen corresponding path program 2 times [2024-06-27 18:27:39,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:39,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531985797] [2024-06-27 18:27:39,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:39,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:40,189 INFO 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 18:27:40,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:40,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531985797] [2024-06-27 18:27:40,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531985797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:40,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:40,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:40,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106842431] [2024-06-27 18:27:40,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:40,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:40,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:40,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:40,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:40,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:27:40,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:40,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:40,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:27:40,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:40,580 INFO L124 PetriNetUnfolderBase]: 642/1252 cut-off events. [2024-06-27 18:27:40,580 INFO L125 PetriNetUnfolderBase]: For 3217/3223 co-relation queries the response was YES. [2024-06-27 18:27:40,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 1252 events. 642/1252 cut-off events. For 3217/3223 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7049 event pairs, 201 based on Foata normal form. 7/1225 useless extension candidates. Maximal degree in co-relation 3969. Up to 1035 conditions per place. [2024-06-27 18:27:40,588 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 59 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-06-27 18:27:40,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 574 flow [2024-06-27 18:27:40,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-27 18:27:40,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:27:40,590 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 402 flow. Second operand 6 states and 114 transitions. [2024-06-27 18:27:40,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 574 flow [2024-06-27 18:27:40,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 81 transitions, 564 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 18:27:40,596 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 417 flow [2024-06-27 18:27:40,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=417, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-06-27 18:27:40,598 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2024-06-27 18:27:40,598 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 417 flow [2024-06-27 18:27:40,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:40,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:40,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:40,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:27:40,599 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:40,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:40,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1355541968, now seen corresponding path program 1 times [2024-06-27 18:27:40,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:40,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162135025] [2024-06-27 18:27:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:40,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:41,532 INFO 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 18:27:41,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:41,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162135025] [2024-06-27 18:27:41,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162135025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:41,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:41,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:41,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269137275] [2024-06-27 18:27:41,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:41,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:41,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:41,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 18:27:41,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 417 flow. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:41,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:41,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 18:27:41,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:41,986 INFO L124 PetriNetUnfolderBase]: 584/1125 cut-off events. [2024-06-27 18:27:41,986 INFO L125 PetriNetUnfolderBase]: For 3645/3645 co-relation queries the response was YES. [2024-06-27 18:27:41,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3760 conditions, 1125 events. 584/1125 cut-off events. For 3645/3645 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6166 event pairs, 96 based on Foata normal form. 4/1090 useless extension candidates. Maximal degree in co-relation 3728. Up to 854 conditions per place. [2024-06-27 18:27:41,991 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 89 selfloop transitions, 15 changer transitions 0/115 dead transitions. [2024-06-27 18:27:41,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 115 transitions, 767 flow [2024-06-27 18:27:41,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-27 18:27:41,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2024-06-27 18:27:41,993 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 417 flow. Second operand 9 states and 192 transitions. [2024-06-27 18:27:41,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 115 transitions, 767 flow [2024-06-27 18:27:41,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 115 transitions, 736 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:41,999 INFO L231 Difference]: Finished difference. Result has 81 places, 70 transitions, 450 flow [2024-06-27 18:27:41,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=450, PETRI_PLACES=81, PETRI_TRANSITIONS=70} [2024-06-27 18:27:41,999 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-06-27 18:27:42,000 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 450 flow [2024-06-27 18:27:42,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:42,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:42,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:42,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:27:42,000 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:42,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1766253093, now seen corresponding path program 1 times [2024-06-27 18:27:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:42,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68240224] [2024-06-27 18:27:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:42,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:42,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:42,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68240224] [2024-06-27 18:27:42,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68240224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:42,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:42,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:42,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79442584] [2024-06-27 18:27:42,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:42,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:42,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:42,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:42,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:42,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:42,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 450 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 18:27:42,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:42,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:42,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:43,110 INFO L124 PetriNetUnfolderBase]: 697/1296 cut-off events. [2024-06-27 18:27:43,110 INFO L125 PetriNetUnfolderBase]: For 4252/4260 co-relation queries the response was YES. [2024-06-27 18:27:43,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4379 conditions, 1296 events. 697/1296 cut-off events. For 4252/4260 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7032 event pairs, 203 based on Foata normal form. 11/1275 useless extension candidates. Maximal degree in co-relation 4345. Up to 1096 conditions per place. [2024-06-27 18:27:43,119 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 71 selfloop transitions, 14 changer transitions 0/95 dead transitions. [2024-06-27 18:27:43,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 686 flow [2024-06-27 18:27:43,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 18:27:43,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2024-06-27 18:27:43,121 INFO L175 Difference]: Start difference. First operand has 81 places, 70 transitions, 450 flow. Second operand 7 states and 129 transitions. [2024-06-27 18:27:43,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 686 flow [2024-06-27 18:27:43,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 95 transitions, 653 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:43,127 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 464 flow [2024-06-27 18:27:43,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=464, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-06-27 18:27:43,129 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-06-27 18:27:43,129 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 464 flow [2024-06-27 18:27:43,129 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 18:27:43,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:43,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:43,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:27:43,130 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:43,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash 749242173, now seen corresponding path program 1 times [2024-06-27 18:27:43,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:43,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944741399] [2024-06-27 18:27:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:43,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:43,764 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 18:27:43,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:43,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944741399] [2024-06-27 18:27:43,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944741399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:43,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:43,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678533567] [2024-06-27 18:27:43,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:43,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:43,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:43,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:43,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:43,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 464 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 18:27:43,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:43,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:43,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:44,117 INFO L124 PetriNetUnfolderBase]: 691/1294 cut-off events. [2024-06-27 18:27:44,117 INFO L125 PetriNetUnfolderBase]: For 4620/4622 co-relation queries the response was YES. [2024-06-27 18:27:44,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4479 conditions, 1294 events. 691/1294 cut-off events. For 4620/4622 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7054 event pairs, 148 based on Foata normal form. 3/1261 useless extension candidates. Maximal degree in co-relation 4443. Up to 1035 conditions per place. [2024-06-27 18:27:44,127 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 77 selfloop transitions, 18 changer transitions 0/104 dead transitions. [2024-06-27 18:27:44,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 104 transitions, 774 flow [2024-06-27 18:27:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:44,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 18:27:44,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981684981684982 [2024-06-27 18:27:44,128 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 464 flow. Second operand 7 states and 136 transitions. [2024-06-27 18:27:44,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 104 transitions, 774 flow [2024-06-27 18:27:44,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 104 transitions, 743 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:44,137 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 502 flow [2024-06-27 18:27:44,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-06-27 18:27:44,138 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-06-27 18:27:44,139 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 502 flow [2024-06-27 18:27:44,139 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 18:27:44,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:44,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:44,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:27:44,140 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:44,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:44,140 INFO L85 PathProgramCache]: Analyzing trace with hash 815617519, now seen corresponding path program 2 times [2024-06-27 18:27:44,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:44,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232912809] [2024-06-27 18:27:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:44,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:44,729 INFO 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 18:27:44,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:44,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232912809] [2024-06-27 18:27:44,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232912809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:44,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:44,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:44,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415344910] [2024-06-27 18:27:44,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:44,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:44,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:44,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:44,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 502 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 18:27:44,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:44,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:44,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:45,063 INFO L124 PetriNetUnfolderBase]: 702/1309 cut-off events. [2024-06-27 18:27:45,064 INFO L125 PetriNetUnfolderBase]: For 5288/5290 co-relation queries the response was YES. [2024-06-27 18:27:45,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4670 conditions, 1309 events. 702/1309 cut-off events. For 5288/5290 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7136 event pairs, 150 based on Foata normal form. 3/1277 useless extension candidates. Maximal degree in co-relation 4633. Up to 1047 conditions per place. [2024-06-27 18:27:45,074 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 75 selfloop transitions, 19 changer transitions 0/103 dead transitions. [2024-06-27 18:27:45,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 103 transitions, 796 flow [2024-06-27 18:27:45,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 18:27:45,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908424908424908 [2024-06-27 18:27:45,077 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 502 flow. Second operand 7 states and 134 transitions. [2024-06-27 18:27:45,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 103 transitions, 796 flow [2024-06-27 18:27:45,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 103 transitions, 769 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 18:27:45,084 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 534 flow [2024-06-27 18:27:45,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=534, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-06-27 18:27:45,085 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-06-27 18:27:45,085 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 534 flow [2024-06-27 18:27:45,085 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 18:27:45,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:45,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:45,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:27:45,085 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:45,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash 815617767, now seen corresponding path program 1 times [2024-06-27 18:27:45,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:45,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651008880] [2024-06-27 18:27:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:45,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:45,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:45,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651008880] [2024-06-27 18:27:45,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651008880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:45,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:45,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:45,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031239300] [2024-06-27 18:27:45,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:45,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:45,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:45,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:45,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 534 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 18:27:45,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:45,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:45,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:45,978 INFO L124 PetriNetUnfolderBase]: 742/1379 cut-off events. [2024-06-27 18:27:45,978 INFO L125 PetriNetUnfolderBase]: For 5818/5822 co-relation queries the response was YES. [2024-06-27 18:27:45,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4898 conditions, 1379 events. 742/1379 cut-off events. For 5818/5822 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7596 event pairs, 164 based on Foata normal form. 5/1342 useless extension candidates. Maximal degree in co-relation 4859. Up to 1124 conditions per place. [2024-06-27 18:27:45,989 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 79 selfloop transitions, 18 changer transitions 0/110 dead transitions. [2024-06-27 18:27:45,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 110 transitions, 860 flow [2024-06-27 18:27:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 18:27:45,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908424908424908 [2024-06-27 18:27:45,990 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 534 flow. Second operand 7 states and 134 transitions. [2024-06-27 18:27:45,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 110 transitions, 860 flow [2024-06-27 18:27:45,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 110 transitions, 827 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:45,998 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 600 flow [2024-06-27 18:27:45,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=600, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2024-06-27 18:27:45,999 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-06-27 18:27:45,999 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 600 flow [2024-06-27 18:27:46,000 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 18:27:46,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:46,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:46,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:27:46,000 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:46,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:46,000 INFO L85 PathProgramCache]: Analyzing trace with hash 924591427, now seen corresponding path program 2 times [2024-06-27 18:27:46,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:46,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023950773] [2024-06-27 18:27:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:46,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:46,519 INFO 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 18:27:46,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023950773] [2024-06-27 18:27:46,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023950773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:46,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:46,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:46,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476859821] [2024-06-27 18:27:46,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:46,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:46,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:46,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:46,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:46,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:46,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 600 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 18:27:46,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:46,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:46,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:46,899 INFO L124 PetriNetUnfolderBase]: 749/1427 cut-off events. [2024-06-27 18:27:46,899 INFO L125 PetriNetUnfolderBase]: For 6996/7004 co-relation queries the response was YES. [2024-06-27 18:27:46,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5216 conditions, 1427 events. 749/1427 cut-off events. For 6996/7004 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8059 event pairs, 216 based on Foata normal form. 9/1392 useless extension candidates. Maximal degree in co-relation 5175. Up to 1173 conditions per place. [2024-06-27 18:27:46,908 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 78 selfloop transitions, 16 changer transitions 0/107 dead transitions. [2024-06-27 18:27:46,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 107 transitions, 886 flow [2024-06-27 18:27:46,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 18:27:46,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2024-06-27 18:27:46,909 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 600 flow. Second operand 7 states and 128 transitions. [2024-06-27 18:27:46,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 107 transitions, 886 flow [2024-06-27 18:27:46,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 107 transitions, 873 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:27:46,919 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 640 flow [2024-06-27 18:27:46,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=640, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2024-06-27 18:27:46,920 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-06-27 18:27:46,920 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 640 flow [2024-06-27 18:27:46,920 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 18:27:46,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:46,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:46,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:27:46,921 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:46,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:46,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1080392239, now seen corresponding path program 3 times [2024-06-27 18:27:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:46,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416706538] [2024-06-27 18:27:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:46,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:47,442 INFO 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 18:27:47,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:47,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416706538] [2024-06-27 18:27:47,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416706538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:47,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:47,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:47,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925112752] [2024-06-27 18:27:47,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:47,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:47,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:47,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:47,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:47,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:47,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 640 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 18:27:47,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:47,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:47,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:47,843 INFO L124 PetriNetUnfolderBase]: 738/1401 cut-off events. [2024-06-27 18:27:47,844 INFO L125 PetriNetUnfolderBase]: For 7971/7971 co-relation queries the response was YES. [2024-06-27 18:27:47,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5290 conditions, 1401 events. 738/1401 cut-off events. For 7971/7971 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7889 event pairs, 204 based on Foata normal form. 1/1362 useless extension candidates. Maximal degree in co-relation 5246. Up to 1158 conditions per place. [2024-06-27 18:27:47,851 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 81 selfloop transitions, 12 changer transitions 0/106 dead transitions. [2024-06-27 18:27:47,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 106 transitions, 878 flow [2024-06-27 18:27:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:47,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 18:27:47,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45787545787545786 [2024-06-27 18:27:47,853 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 640 flow. Second operand 7 states and 125 transitions. [2024-06-27 18:27:47,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 106 transitions, 878 flow [2024-06-27 18:27:47,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 829 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:47,863 INFO L231 Difference]: Finished difference. Result has 100 places, 87 transitions, 620 flow [2024-06-27 18:27:47,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=620, PETRI_PLACES=100, PETRI_TRANSITIONS=87} [2024-06-27 18:27:47,864 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-06-27 18:27:47,864 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 87 transitions, 620 flow [2024-06-27 18:27:47,864 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 18:27:47,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:47,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:47,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:27:47,864 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:47,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:47,865 INFO L85 PathProgramCache]: Analyzing trace with hash 218870227, now seen corresponding path program 3 times [2024-06-27 18:27:47,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:47,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739571118] [2024-06-27 18:27:47,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:47,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:48,342 INFO 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 18:27:48,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:48,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739571118] [2024-06-27 18:27:48,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739571118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:48,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:48,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:48,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478528453] [2024-06-27 18:27:48,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:48,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:48,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:48,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:48,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:48,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:48,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 87 transitions, 620 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 18:27:48,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:48,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:48,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:48,808 INFO L124 PetriNetUnfolderBase]: 745/1422 cut-off events. [2024-06-27 18:27:48,808 INFO L125 PetriNetUnfolderBase]: For 8189/8197 co-relation queries the response was YES. [2024-06-27 18:27:48,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5267 conditions, 1422 events. 745/1422 cut-off events. For 8189/8197 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8055 event pairs, 220 based on Foata normal form. 9/1387 useless extension candidates. Maximal degree in co-relation 5223. Up to 1189 conditions per place. [2024-06-27 18:27:48,817 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 78 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2024-06-27 18:27:48,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 104 transitions, 844 flow [2024-06-27 18:27:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 18:27:48,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542124542124542 [2024-06-27 18:27:48,819 INFO L175 Difference]: Start difference. First operand has 100 places, 87 transitions, 620 flow. Second operand 7 states and 124 transitions. [2024-06-27 18:27:48,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 104 transitions, 844 flow [2024-06-27 18:27:48,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 104 transitions, 798 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:48,829 INFO L231 Difference]: Finished difference. Result has 100 places, 87 transitions, 605 flow [2024-06-27 18:27:48,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=605, PETRI_PLACES=100, PETRI_TRANSITIONS=87} [2024-06-27 18:27:48,830 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-06-27 18:27:48,830 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 87 transitions, 605 flow [2024-06-27 18:27:48,830 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 18:27:48,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:48,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:48,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:27:48,831 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:48,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash -491373991, now seen corresponding path program 1 times [2024-06-27 18:27:48,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:48,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938205860] [2024-06-27 18:27:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:48,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:49,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:49,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938205860] [2024-06-27 18:27:49,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938205860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:49,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:49,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:49,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155275639] [2024-06-27 18:27:49,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:49,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:49,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:49,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:49,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:49,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:49,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 87 transitions, 605 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 18:27:49,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:49,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:49,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:49,787 INFO L124 PetriNetUnfolderBase]: 736/1352 cut-off events. [2024-06-27 18:27:49,788 INFO L125 PetriNetUnfolderBase]: For 9119/9119 co-relation queries the response was YES. [2024-06-27 18:27:49,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5271 conditions, 1352 events. 736/1352 cut-off events. For 9119/9119 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7378 event pairs, 144 based on Foata normal form. 1/1323 useless extension candidates. Maximal degree in co-relation 5226. Up to 1039 conditions per place. [2024-06-27 18:27:49,796 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 89 selfloop transitions, 25 changer transitions 0/127 dead transitions. [2024-06-27 18:27:49,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 127 transitions, 995 flow [2024-06-27 18:27:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 18:27:49,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2024-06-27 18:27:49,798 INFO L175 Difference]: Start difference. First operand has 100 places, 87 transitions, 605 flow. Second operand 8 states and 157 transitions. [2024-06-27 18:27:49,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 127 transitions, 995 flow [2024-06-27 18:27:49,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 127 transitions, 960 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:49,810 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 653 flow [2024-06-27 18:27:49,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=653, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2024-06-27 18:27:49,810 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-06-27 18:27:49,810 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 653 flow [2024-06-27 18:27:49,811 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 18:27:49,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:49,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:49,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:27:49,811 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:49,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1151986076, now seen corresponding path program 1 times [2024-06-27 18:27:49,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:49,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636911568] [2024-06-27 18:27:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:49,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:50,414 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 18:27:50,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:50,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636911568] [2024-06-27 18:27:50,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636911568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:50,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:50,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:50,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048998857] [2024-06-27 18:27:50,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:50,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:50,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:50,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:50,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:50,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:27:50,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 653 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:50,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:50,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:27:50,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:50,787 INFO L124 PetriNetUnfolderBase]: 822/1466 cut-off events. [2024-06-27 18:27:50,787 INFO L125 PetriNetUnfolderBase]: For 10223/10223 co-relation queries the response was YES. [2024-06-27 18:27:50,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5880 conditions, 1466 events. 822/1466 cut-off events. For 10223/10223 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7903 event pairs, 167 based on Foata normal form. 1/1431 useless extension candidates. Maximal degree in co-relation 5834. Up to 1161 conditions per place. [2024-06-27 18:27:50,796 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 93 selfloop transitions, 28 changer transitions 0/128 dead transitions. [2024-06-27 18:27:50,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 128 transitions, 1055 flow [2024-06-27 18:27:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:27:50,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-27 18:27:50,797 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 653 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:27:50,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 128 transitions, 1055 flow [2024-06-27 18:27:50,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 128 transitions, 1018 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:50,811 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 709 flow [2024-06-27 18:27:50,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=709, PETRI_PLACES=106, PETRI_TRANSITIONS=95} [2024-06-27 18:27:50,811 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-06-27 18:27:50,811 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 709 flow [2024-06-27 18:27:50,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:50,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:50,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:50,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:27:50,812 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:50,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:50,812 INFO L85 PathProgramCache]: Analyzing trace with hash -491224261, now seen corresponding path program 2 times [2024-06-27 18:27:50,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:50,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595622883] [2024-06-27 18:27:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:50,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:51,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:51,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595622883] [2024-06-27 18:27:51,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595622883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:51,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:51,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:51,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221445503] [2024-06-27 18:27:51,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:51,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:51,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:51,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:51,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:51,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:51,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 95 transitions, 709 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 18:27:51,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:51,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:51,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:51,755 INFO L124 PetriNetUnfolderBase]: 769/1402 cut-off events. [2024-06-27 18:27:51,755 INFO L125 PetriNetUnfolderBase]: For 11322/11322 co-relation queries the response was YES. [2024-06-27 18:27:51,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5876 conditions, 1402 events. 769/1402 cut-off events. For 11322/11322 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7646 event pairs, 146 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 5828. Up to 1074 conditions per place. [2024-06-27 18:27:51,763 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 90 selfloop transitions, 25 changer transitions 0/130 dead transitions. [2024-06-27 18:27:51,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 130 transitions, 1085 flow [2024-06-27 18:27:51,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:51,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 18:27:51,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967948717948718 [2024-06-27 18:27:51,764 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 709 flow. Second operand 8 states and 155 transitions. [2024-06-27 18:27:51,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 130 transitions, 1085 flow [2024-06-27 18:27:51,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 130 transitions, 1048 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:51,780 INFO L231 Difference]: Finished difference. Result has 110 places, 97 transitions, 739 flow [2024-06-27 18:27:51,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=739, PETRI_PLACES=110, PETRI_TRANSITIONS=97} [2024-06-27 18:27:51,780 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-06-27 18:27:51,781 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 97 transitions, 739 flow [2024-06-27 18:27:51,781 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 18:27:51,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:51,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:51,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:27:51,781 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:51,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:51,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1757243346, now seen corresponding path program 2 times [2024-06-27 18:27:51,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:51,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884246254] [2024-06-27 18:27:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:51,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:52,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884246254] [2024-06-27 18:27:52,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884246254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:52,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:52,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:52,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094960013] [2024-06-27 18:27:52,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:52,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:52,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:52,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:52,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:52,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:27:52,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 97 transitions, 739 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:52,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:52,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:27:52,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:52,728 INFO L124 PetriNetUnfolderBase]: 857/1515 cut-off events. [2024-06-27 18:27:52,728 INFO L125 PetriNetUnfolderBase]: For 12626/12626 co-relation queries the response was YES. [2024-06-27 18:27:52,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6465 conditions, 1515 events. 857/1515 cut-off events. For 12626/12626 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8106 event pairs, 168 based on Foata normal form. 1/1482 useless extension candidates. Maximal degree in co-relation 6415. Up to 1204 conditions per place. [2024-06-27 18:27:52,737 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 95 selfloop transitions, 30 changer transitions 0/132 dead transitions. [2024-06-27 18:27:52,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 132 transitions, 1191 flow [2024-06-27 18:27:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:52,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 18:27:52,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 18:27:52,739 INFO L175 Difference]: Start difference. First operand has 110 places, 97 transitions, 739 flow. Second operand 8 states and 148 transitions. [2024-06-27 18:27:52,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 132 transitions, 1191 flow [2024-06-27 18:27:52,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 132 transitions, 1150 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:52,756 INFO L231 Difference]: Finished difference. Result has 113 places, 101 transitions, 795 flow [2024-06-27 18:27:52,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=795, PETRI_PLACES=113, PETRI_TRANSITIONS=101} [2024-06-27 18:27:52,757 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 70 predicate places. [2024-06-27 18:27:52,757 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 101 transitions, 795 flow [2024-06-27 18:27:52,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:52,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:52,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:52,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:27:52,758 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:52,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:52,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1757243625, now seen corresponding path program 1 times [2024-06-27 18:27:52,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:52,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772851020] [2024-06-27 18:27:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:52,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:53,358 INFO 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 18:27:53,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:53,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772851020] [2024-06-27 18:27:53,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772851020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:53,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:53,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:53,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131064318] [2024-06-27 18:27:53,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:53,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:53,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:53,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:53,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:53,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:53,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 101 transitions, 795 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 18:27:53,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:53,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:53,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:53,701 INFO L124 PetriNetUnfolderBase]: 867/1555 cut-off events. [2024-06-27 18:27:53,701 INFO L125 PetriNetUnfolderBase]: For 14625/14629 co-relation queries the response was YES. [2024-06-27 18:27:53,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6630 conditions, 1555 events. 867/1555 cut-off events. For 14625/14629 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8556 event pairs, 179 based on Foata normal form. 7/1528 useless extension candidates. Maximal degree in co-relation 6579. Up to 1206 conditions per place. [2024-06-27 18:27:53,710 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 101 selfloop transitions, 24 changer transitions 0/142 dead transitions. [2024-06-27 18:27:53,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 142 transitions, 1225 flow [2024-06-27 18:27:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 18:27:53,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2024-06-27 18:27:53,712 INFO L175 Difference]: Start difference. First operand has 113 places, 101 transitions, 795 flow. Second operand 8 states and 157 transitions. [2024-06-27 18:27:53,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 142 transitions, 1225 flow [2024-06-27 18:27:53,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 142 transitions, 1176 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:53,727 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 861 flow [2024-06-27 18:27:53,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=861, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2024-06-27 18:27:53,728 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-06-27 18:27:53,728 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 861 flow [2024-06-27 18:27:53,728 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 18:27:53,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:53,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:53,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:27:53,729 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:53,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:53,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1757235689, now seen corresponding path program 3 times [2024-06-27 18:27:53,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:53,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699540819] [2024-06-27 18:27:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:53,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:54,335 INFO 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 18:27:54,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:54,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699540819] [2024-06-27 18:27:54,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699540819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:54,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:54,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:54,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011547907] [2024-06-27 18:27:54,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:54,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:54,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:54,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:54,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:54,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:54,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 861 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 18:27:54,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:54,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:54,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:54,698 INFO L124 PetriNetUnfolderBase]: 862/1581 cut-off events. [2024-06-27 18:27:54,699 INFO L125 PetriNetUnfolderBase]: For 16382/16382 co-relation queries the response was YES. [2024-06-27 18:27:54,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7075 conditions, 1581 events. 862/1581 cut-off events. For 16382/16382 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8873 event pairs, 167 based on Foata normal form. 1/1542 useless extension candidates. Maximal degree in co-relation 7022. Up to 1203 conditions per place. [2024-06-27 18:27:54,711 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 97 selfloop transitions, 26 changer transitions 0/140 dead transitions. [2024-06-27 18:27:54,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 140 transitions, 1261 flow [2024-06-27 18:27:54,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:54,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 18:27:54,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-27 18:27:54,713 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 861 flow. Second operand 8 states and 153 transitions. [2024-06-27 18:27:54,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 140 transitions, 1261 flow [2024-06-27 18:27:54,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 140 transitions, 1243 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:27:54,736 INFO L231 Difference]: Finished difference. Result has 123 places, 110 transitions, 914 flow [2024-06-27 18:27:54,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=914, PETRI_PLACES=123, PETRI_TRANSITIONS=110} [2024-06-27 18:27:54,736 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 80 predicate places. [2024-06-27 18:27:54,737 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 110 transitions, 914 flow [2024-06-27 18:27:54,737 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 18:27:54,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:54,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:54,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:27:54,737 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:54,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:54,738 INFO L85 PathProgramCache]: Analyzing trace with hash -485659854, now seen corresponding path program 3 times [2024-06-27 18:27:54,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:54,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323076366] [2024-06-27 18:27:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:54,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:55,307 INFO 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 18:27:55,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:55,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323076366] [2024-06-27 18:27:55,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323076366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:55,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:55,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:55,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869089369] [2024-06-27 18:27:55,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:55,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:55,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:55,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:55,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:27:55,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 110 transitions, 914 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:55,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:55,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:27:55,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:55,625 INFO L124 PetriNetUnfolderBase]: 928/1645 cut-off events. [2024-06-27 18:27:55,625 INFO L125 PetriNetUnfolderBase]: For 17129/17129 co-relation queries the response was YES. [2024-06-27 18:27:55,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7440 conditions, 1645 events. 928/1645 cut-off events. For 17129/17129 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9027 event pairs, 179 based on Foata normal form. 1/1606 useless extension candidates. Maximal degree in co-relation 7384. Up to 1315 conditions per place. [2024-06-27 18:27:55,634 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 104 selfloop transitions, 29 changer transitions 0/140 dead transitions. [2024-06-27 18:27:55,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 140 transitions, 1322 flow [2024-06-27 18:27:55,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:55,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 18:27:55,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 18:27:55,635 INFO L175 Difference]: Start difference. First operand has 123 places, 110 transitions, 914 flow. Second operand 8 states and 148 transitions. [2024-06-27 18:27:55,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 140 transitions, 1322 flow [2024-06-27 18:27:55,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 140 transitions, 1275 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:55,662 INFO L231 Difference]: Finished difference. Result has 126 places, 110 transitions, 930 flow [2024-06-27 18:27:55,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=930, PETRI_PLACES=126, PETRI_TRANSITIONS=110} [2024-06-27 18:27:55,662 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 83 predicate places. [2024-06-27 18:27:55,663 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 110 transitions, 930 flow [2024-06-27 18:27:55,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:55,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:55,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:55,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:27:55,663 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:55,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:55,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1807929921, now seen corresponding path program 2 times [2024-06-27 18:27:55,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:55,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764229131] [2024-06-27 18:27:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:55,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:56,231 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 18:27:56,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:56,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764229131] [2024-06-27 18:27:56,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764229131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:56,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:56,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:56,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743331276] [2024-06-27 18:27:56,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:56,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:56,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:56,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:56,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:56,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:56,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 110 transitions, 930 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 18:27:56,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:56,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:56,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:56,702 INFO L124 PetriNetUnfolderBase]: 939/1708 cut-off events. [2024-06-27 18:27:56,703 INFO L125 PetriNetUnfolderBase]: For 20378/20386 co-relation queries the response was YES. [2024-06-27 18:27:56,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7685 conditions, 1708 events. 939/1708 cut-off events. For 20378/20386 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9734 event pairs, 246 based on Foata normal form. 11/1678 useless extension candidates. Maximal degree in co-relation 7628. Up to 1396 conditions per place. [2024-06-27 18:27:56,715 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 105 selfloop transitions, 19 changer transitions 0/141 dead transitions. [2024-06-27 18:27:56,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 141 transitions, 1338 flow [2024-06-27 18:27:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 18:27:56,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 18:27:56,716 INFO L175 Difference]: Start difference. First operand has 126 places, 110 transitions, 930 flow. Second operand 8 states and 148 transitions. [2024-06-27 18:27:56,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 141 transitions, 1338 flow [2024-06-27 18:27:56,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 141 transitions, 1274 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:56,743 INFO L231 Difference]: Finished difference. Result has 127 places, 114 transitions, 949 flow [2024-06-27 18:27:56,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=949, PETRI_PLACES=127, PETRI_TRANSITIONS=114} [2024-06-27 18:27:56,745 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-06-27 18:27:56,745 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 114 transitions, 949 flow [2024-06-27 18:27:56,745 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 18:27:56,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:56,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:56,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:27:56,746 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:56,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash -857480186, now seen corresponding path program 4 times [2024-06-27 18:27:56,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:56,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828839069] [2024-06-27 18:27:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:56,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:57,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:57,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:57,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828839069] [2024-06-27 18:27:57,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828839069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:57,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:57,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:57,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239172035] [2024-06-27 18:27:57,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:57,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:57,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:57,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:57,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:57,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:27:57,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 114 transitions, 949 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:57,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:57,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:27:57,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:57,755 INFO L124 PetriNetUnfolderBase]: 1011/1797 cut-off events. [2024-06-27 18:27:57,756 INFO L125 PetriNetUnfolderBase]: For 21631/21631 co-relation queries the response was YES. [2024-06-27 18:27:57,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8203 conditions, 1797 events. 1011/1797 cut-off events. For 21631/21631 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10103 event pairs, 260 based on Foata normal form. 1/1757 useless extension candidates. Maximal degree in co-relation 8145. Up to 1596 conditions per place. [2024-06-27 18:27:57,767 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 116 selfloop transitions, 15 changer transitions 0/138 dead transitions. [2024-06-27 18:27:57,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 138 transitions, 1291 flow [2024-06-27 18:27:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:57,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:57,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 18:27:57,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42948717948717946 [2024-06-27 18:27:57,776 INFO L175 Difference]: Start difference. First operand has 127 places, 114 transitions, 949 flow. Second operand 8 states and 134 transitions. [2024-06-27 18:27:57,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 138 transitions, 1291 flow [2024-06-27 18:27:57,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 138 transitions, 1253 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:57,824 INFO L231 Difference]: Finished difference. Result has 131 places, 116 transitions, 968 flow [2024-06-27 18:27:57,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=968, PETRI_PLACES=131, PETRI_TRANSITIONS=116} [2024-06-27 18:27:57,825 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 88 predicate places. [2024-06-27 18:27:57,825 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 116 transitions, 968 flow [2024-06-27 18:27:57,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:57,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:57,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:57,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:27:57,826 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:57,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:57,826 INFO L85 PathProgramCache]: Analyzing trace with hash -867578126, now seen corresponding path program 5 times [2024-06-27 18:27:57,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:57,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710902558] [2024-06-27 18:27:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:57,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:58,404 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 18:27:58,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:58,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710902558] [2024-06-27 18:27:58,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710902558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:58,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:58,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:58,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102273592] [2024-06-27 18:27:58,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:58,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:58,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:58,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:58,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:58,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:27:58,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 116 transitions, 968 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:58,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:58,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:27:58,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:58,894 INFO L124 PetriNetUnfolderBase]: 1022/1806 cut-off events. [2024-06-27 18:27:58,894 INFO L125 PetriNetUnfolderBase]: For 22565/22565 co-relation queries the response was YES. [2024-06-27 18:27:58,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8289 conditions, 1806 events. 1022/1806 cut-off events. For 22565/22565 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10116 event pairs, 252 based on Foata normal form. 1/1768 useless extension candidates. Maximal degree in co-relation 8230. Up to 1559 conditions per place. [2024-06-27 18:27:58,904 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 113 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2024-06-27 18:27:58,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 143 transitions, 1390 flow [2024-06-27 18:27:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:58,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 18:27:58,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-06-27 18:27:58,906 INFO L175 Difference]: Start difference. First operand has 131 places, 116 transitions, 968 flow. Second operand 8 states and 139 transitions. [2024-06-27 18:27:58,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 143 transitions, 1390 flow [2024-06-27 18:27:58,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 143 transitions, 1355 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:58,937 INFO L231 Difference]: Finished difference. Result has 133 places, 118 transitions, 1006 flow [2024-06-27 18:27:58,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1006, PETRI_PLACES=133, PETRI_TRANSITIONS=118} [2024-06-27 18:27:58,942 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 90 predicate places. [2024-06-27 18:27:58,942 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 118 transitions, 1006 flow [2024-06-27 18:27:58,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:58,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:58,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:58,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:27:58,943 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:58,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:58,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1815055127, now seen corresponding path program 4 times [2024-06-27 18:27:58,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:58,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238690182] [2024-06-27 18:27:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:58,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:59,597 INFO 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 18:27:59,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:59,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238690182] [2024-06-27 18:27:59,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238690182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:59,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:59,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:59,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808827057] [2024-06-27 18:27:59,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:59,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:59,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:59,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:59,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:59,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:27:59,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 118 transitions, 1006 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 18:27:59,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:59,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:27:59,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:59,997 INFO L124 PetriNetUnfolderBase]: 943/1752 cut-off events. [2024-06-27 18:27:59,997 INFO L125 PetriNetUnfolderBase]: For 23806/23810 co-relation queries the response was YES. [2024-06-27 18:28:00,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8018 conditions, 1752 events. 943/1752 cut-off events. For 23806/23810 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10249 event pairs, 236 based on Foata normal form. 3/1707 useless extension candidates. Maximal degree in co-relation 7958. Up to 1444 conditions per place. [2024-06-27 18:28:00,007 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 109 selfloop transitions, 14 changer transitions 0/142 dead transitions. [2024-06-27 18:28:00,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 142 transitions, 1326 flow [2024-06-27 18:28:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:00,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 18:28:00,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-27 18:28:00,008 INFO L175 Difference]: Start difference. First operand has 133 places, 118 transitions, 1006 flow. Second operand 8 states and 142 transitions. [2024-06-27 18:28:00,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 142 transitions, 1326 flow [2024-06-27 18:28:00,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 142 transitions, 1241 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:00,038 INFO L231 Difference]: Finished difference. Result has 134 places, 118 transitions, 954 flow [2024-06-27 18:28:00,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=954, PETRI_PLACES=134, PETRI_TRANSITIONS=118} [2024-06-27 18:28:00,039 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-27 18:28:00,039 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 118 transitions, 954 flow [2024-06-27 18:28:00,040 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 18:28:00,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:00,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:00,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:28:00,040 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:00,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:00,040 INFO L85 PathProgramCache]: Analyzing trace with hash -857124647, now seen corresponding path program 3 times [2024-06-27 18:28:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:00,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359139003] [2024-06-27 18:28:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:00,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:00,575 INFO 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 18:28:00,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:00,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359139003] [2024-06-27 18:28:00,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359139003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:00,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:00,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:00,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35174103] [2024-06-27 18:28:00,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:00,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:00,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:00,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:00,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:00,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:00,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 118 transitions, 954 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 18:28:00,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:00,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:00,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:01,112 INFO L124 PetriNetUnfolderBase]: 949/1729 cut-off events. [2024-06-27 18:28:01,113 INFO L125 PetriNetUnfolderBase]: For 24092/24098 co-relation queries the response was YES. [2024-06-27 18:28:01,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 1729 events. 949/1729 cut-off events. For 24092/24098 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9929 event pairs, 254 based on Foata normal form. 9/1697 useless extension candidates. Maximal degree in co-relation 7713. Up to 1453 conditions per place. [2024-06-27 18:28:01,122 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 105 selfloop transitions, 16 changer transitions 0/140 dead transitions. [2024-06-27 18:28:01,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 140 transitions, 1252 flow [2024-06-27 18:28:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 18:28:01,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-27 18:28:01,125 INFO L175 Difference]: Start difference. First operand has 134 places, 118 transitions, 954 flow. Second operand 8 states and 142 transitions. [2024-06-27 18:28:01,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 140 transitions, 1252 flow [2024-06-27 18:28:01,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 140 transitions, 1187 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:01,153 INFO L231 Difference]: Finished difference. Result has 133 places, 118 transitions, 926 flow [2024-06-27 18:28:01,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=926, PETRI_PLACES=133, PETRI_TRANSITIONS=118} [2024-06-27 18:28:01,153 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 90 predicate places. [2024-06-27 18:28:01,153 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 118 transitions, 926 flow [2024-06-27 18:28:01,154 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 18:28:01,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:01,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:01,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:28:01,154 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:01,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:01,154 INFO L85 PathProgramCache]: Analyzing trace with hash -867570686, now seen corresponding path program 6 times [2024-06-27 18:28:01,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:01,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784605057] [2024-06-27 18:28:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:01,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:01,694 INFO 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 18:28:01,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:01,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784605057] [2024-06-27 18:28:01,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784605057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:01,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:01,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:01,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468766255] [2024-06-27 18:28:01,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:01,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:01,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:01,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:01,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:01,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:01,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 118 transitions, 926 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:01,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:01,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:01,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:02,100 INFO L124 PetriNetUnfolderBase]: 1012/1795 cut-off events. [2024-06-27 18:28:02,100 INFO L125 PetriNetUnfolderBase]: For 24256/24256 co-relation queries the response was YES. [2024-06-27 18:28:02,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8130 conditions, 1795 events. 1012/1795 cut-off events. For 24256/24256 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10070 event pairs, 252 based on Foata normal form. 1/1756 useless extension candidates. Maximal degree in co-relation 8068. Up to 1545 conditions per place. [2024-06-27 18:28:02,111 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 113 selfloop transitions, 22 changer transitions 0/142 dead transitions. [2024-06-27 18:28:02,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 142 transitions, 1270 flow [2024-06-27 18:28:02,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 18:28:02,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-06-27 18:28:02,112 INFO L175 Difference]: Start difference. First operand has 133 places, 118 transitions, 926 flow. Second operand 8 states and 139 transitions. [2024-06-27 18:28:02,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 142 transitions, 1270 flow [2024-06-27 18:28:02,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 142 transitions, 1225 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:02,141 INFO L231 Difference]: Finished difference. Result has 134 places, 118 transitions, 930 flow [2024-06-27 18:28:02,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=930, PETRI_PLACES=134, PETRI_TRANSITIONS=118} [2024-06-27 18:28:02,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-27 18:28:02,141 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 118 transitions, 930 flow [2024-06-27 18:28:02,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:02,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:02,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:02,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:28:02,142 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:02,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:02,142 INFO L85 PathProgramCache]: Analyzing trace with hash -867570407, now seen corresponding path program 4 times [2024-06-27 18:28:02,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:02,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756538695] [2024-06-27 18:28:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:02,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:02,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:02,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756538695] [2024-06-27 18:28:02,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756538695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:02,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:02,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:02,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796256429] [2024-06-27 18:28:02,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:02,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:02,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:02,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:02,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:02,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:02,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 118 transitions, 930 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 18:28:02,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:02,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:02,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:03,108 INFO L124 PetriNetUnfolderBase]: 941/1720 cut-off events. [2024-06-27 18:28:03,108 INFO L125 PetriNetUnfolderBase]: For 24800/24806 co-relation queries the response was YES. [2024-06-27 18:28:03,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7664 conditions, 1720 events. 941/1720 cut-off events. For 24800/24806 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9912 event pairs, 238 based on Foata normal form. 9/1687 useless extension candidates. Maximal degree in co-relation 7601. Up to 1347 conditions per place. [2024-06-27 18:28:03,118 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 104 selfloop transitions, 23 changer transitions 0/146 dead transitions. [2024-06-27 18:28:03,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 146 transitions, 1270 flow [2024-06-27 18:28:03,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 18:28:03,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-27 18:28:03,119 INFO L175 Difference]: Start difference. First operand has 134 places, 118 transitions, 930 flow. Second operand 8 states and 150 transitions. [2024-06-27 18:28:03,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 146 transitions, 1270 flow [2024-06-27 18:28:03,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 146 transitions, 1212 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:03,150 INFO L231 Difference]: Finished difference. Result has 135 places, 118 transitions, 923 flow [2024-06-27 18:28:03,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=923, PETRI_PLACES=135, PETRI_TRANSITIONS=118} [2024-06-27 18:28:03,151 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 92 predicate places. [2024-06-27 18:28:03,151 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 118 transitions, 923 flow [2024-06-27 18:28:03,151 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 18:28:03,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:03,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:03,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:28:03,151 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:03,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:03,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1947156140, now seen corresponding path program 1 times [2024-06-27 18:28:03,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:03,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894579814] [2024-06-27 18:28:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:03,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:03,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:03,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894579814] [2024-06-27 18:28:03,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894579814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:03,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:03,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:03,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417730683] [2024-06-27 18:28:03,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:03,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:03,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:03,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:03,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:03,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:03,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 118 transitions, 923 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 18:28:03,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:03,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:03,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:04,312 INFO L124 PetriNetUnfolderBase]: 939/1747 cut-off events. [2024-06-27 18:28:04,312 INFO L125 PetriNetUnfolderBase]: For 25868/25868 co-relation queries the response was YES. [2024-06-27 18:28:04,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7881 conditions, 1747 events. 939/1747 cut-off events. For 25868/25868 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10210 event pairs, 176 based on Foata normal form. 1/1695 useless extension candidates. Maximal degree in co-relation 7817. Up to 1398 conditions per place. [2024-06-27 18:28:04,321 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 129 selfloop transitions, 15 changer transitions 0/163 dead transitions. [2024-06-27 18:28:04,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 163 transitions, 1363 flow [2024-06-27 18:28:04,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:04,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 18:28:04,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49002849002849 [2024-06-27 18:28:04,322 INFO L175 Difference]: Start difference. First operand has 135 places, 118 transitions, 923 flow. Second operand 9 states and 172 transitions. [2024-06-27 18:28:04,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 163 transitions, 1363 flow [2024-06-27 18:28:04,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 163 transitions, 1280 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:04,352 INFO L231 Difference]: Finished difference. Result has 136 places, 120 transitions, 895 flow [2024-06-27 18:28:04,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=895, PETRI_PLACES=136, PETRI_TRANSITIONS=120} [2024-06-27 18:28:04,352 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-27 18:28:04,352 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 120 transitions, 895 flow [2024-06-27 18:28:04,353 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 18:28:04,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:04,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:04,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:28:04,353 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:04,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:04,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1947276110, now seen corresponding path program 2 times [2024-06-27 18:28:04,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:04,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155010180] [2024-06-27 18:28:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:04,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:04,968 INFO 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 18:28:04,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155010180] [2024-06-27 18:28:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155010180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:04,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:04,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151453723] [2024-06-27 18:28:04,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:04,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:04,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:04,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:04,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:05,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:05,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 120 transitions, 895 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 18:28:05,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:05,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:05,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:05,409 INFO L124 PetriNetUnfolderBase]: 953/1753 cut-off events. [2024-06-27 18:28:05,409 INFO L125 PetriNetUnfolderBase]: For 26808/26808 co-relation queries the response was YES. [2024-06-27 18:28:05,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7886 conditions, 1753 events. 953/1753 cut-off events. For 26808/26808 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10206 event pairs, 163 based on Foata normal form. 1/1705 useless extension candidates. Maximal degree in co-relation 7822. Up to 1279 conditions per place. [2024-06-27 18:28:05,418 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 113 selfloop transitions, 33 changer transitions 0/165 dead transitions. [2024-06-27 18:28:05,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 165 transitions, 1421 flow [2024-06-27 18:28:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 18:28:05,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2024-06-27 18:28:05,433 INFO L175 Difference]: Start difference. First operand has 136 places, 120 transitions, 895 flow. Second operand 9 states and 176 transitions. [2024-06-27 18:28:05,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 165 transitions, 1421 flow [2024-06-27 18:28:05,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 165 transitions, 1382 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:05,464 INFO L231 Difference]: Finished difference. Result has 138 places, 124 transitions, 971 flow [2024-06-27 18:28:05,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=971, PETRI_PLACES=138, PETRI_TRANSITIONS=124} [2024-06-27 18:28:05,464 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2024-06-27 18:28:05,464 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 124 transitions, 971 flow [2024-06-27 18:28:05,465 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 18:28:05,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:05,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:05,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:28:05,465 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:05,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1947276296, now seen corresponding path program 1 times [2024-06-27 18:28:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:05,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328074549] [2024-06-27 18:28:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:05,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:06,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:06,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328074549] [2024-06-27 18:28:06,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328074549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:06,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:06,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:06,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632898698] [2024-06-27 18:28:06,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:06,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:06,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:06,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:06,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:06,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:06,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 971 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:06,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:06,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:06,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:06,508 INFO L124 PetriNetUnfolderBase]: 1045/1841 cut-off events. [2024-06-27 18:28:06,508 INFO L125 PetriNetUnfolderBase]: For 28668/28668 co-relation queries the response was YES. [2024-06-27 18:28:06,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8508 conditions, 1841 events. 1045/1841 cut-off events. For 28668/28668 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10328 event pairs, 177 based on Foata normal form. 1/1798 useless extension candidates. Maximal degree in co-relation 8443. Up to 1356 conditions per place. [2024-06-27 18:28:06,518 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 117 selfloop transitions, 45 changer transitions 0/169 dead transitions. [2024-06-27 18:28:06,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 169 transitions, 1519 flow [2024-06-27 18:28:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:28:06,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-27 18:28:06,519 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 971 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:28:06,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 169 transitions, 1519 flow [2024-06-27 18:28:06,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 169 transitions, 1468 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:06,554 INFO L231 Difference]: Finished difference. Result has 142 places, 128 transitions, 1047 flow [2024-06-27 18:28:06,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1047, PETRI_PLACES=142, PETRI_TRANSITIONS=128} [2024-06-27 18:28:06,555 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-06-27 18:28:06,555 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 128 transitions, 1047 flow [2024-06-27 18:28:06,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:06,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:06,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:06,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:28:06,556 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:06,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:06,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1951917926, now seen corresponding path program 2 times [2024-06-27 18:28:06,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:06,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934825514] [2024-06-27 18:28:06,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:06,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:07,163 INFO 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 18:28:07,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:07,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934825514] [2024-06-27 18:28:07,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934825514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:07,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:07,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:07,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960775514] [2024-06-27 18:28:07,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:07,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:07,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:07,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:07,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:07,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 128 transitions, 1047 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:07,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:07,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:07,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:07,587 INFO L124 PetriNetUnfolderBase]: 1069/1914 cut-off events. [2024-06-27 18:28:07,587 INFO L125 PetriNetUnfolderBase]: For 31057/31057 co-relation queries the response was YES. [2024-06-27 18:28:07,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9026 conditions, 1914 events. 1069/1914 cut-off events. For 31057/31057 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11059 event pairs, 183 based on Foata normal form. 1/1859 useless extension candidates. Maximal degree in co-relation 8959. Up to 1382 conditions per place. [2024-06-27 18:28:07,597 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 122 selfloop transitions, 42 changer transitions 0/171 dead transitions. [2024-06-27 18:28:07,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 171 transitions, 1671 flow [2024-06-27 18:28:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:07,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:28:07,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-27 18:28:07,598 INFO L175 Difference]: Start difference. First operand has 142 places, 128 transitions, 1047 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:28:07,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 171 transitions, 1671 flow [2024-06-27 18:28:07,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 171 transitions, 1602 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:07,638 INFO L231 Difference]: Finished difference. Result has 146 places, 132 transitions, 1103 flow [2024-06-27 18:28:07,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1103, PETRI_PLACES=146, PETRI_TRANSITIONS=132} [2024-06-27 18:28:07,639 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 103 predicate places. [2024-06-27 18:28:07,639 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 132 transitions, 1103 flow [2024-06-27 18:28:07,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:07,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:07,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:07,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:28:07,640 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:07,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:07,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1532757732, now seen corresponding path program 3 times [2024-06-27 18:28:07,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:07,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686495258] [2024-06-27 18:28:07,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:07,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:08,245 INFO 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 18:28:08,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:08,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686495258] [2024-06-27 18:28:08,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686495258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:08,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:08,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159129521] [2024-06-27 18:28:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:08,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:08,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:08,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:08,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:08,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 132 transitions, 1103 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 18:28:08,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:08,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:08,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:08,671 INFO L124 PetriNetUnfolderBase]: 1004/1828 cut-off events. [2024-06-27 18:28:08,671 INFO L125 PetriNetUnfolderBase]: For 32756/32756 co-relation queries the response was YES. [2024-06-27 18:28:08,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 1828 events. 1004/1828 cut-off events. For 32756/32756 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10633 event pairs, 164 based on Foata normal form. 1/1781 useless extension candidates. Maximal degree in co-relation 8788. Up to 1334 conditions per place. [2024-06-27 18:28:08,683 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 116 selfloop transitions, 33 changer transitions 0/172 dead transitions. [2024-06-27 18:28:08,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 172 transitions, 1613 flow [2024-06-27 18:28:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:08,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 18:28:08,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-06-27 18:28:08,684 INFO L175 Difference]: Start difference. First operand has 146 places, 132 transitions, 1103 flow. Second operand 9 states and 174 transitions. [2024-06-27 18:28:08,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 172 transitions, 1613 flow [2024-06-27 18:28:08,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 172 transitions, 1548 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:08,733 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 1129 flow [2024-06-27 18:28:08,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1129, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2024-06-27 18:28:08,734 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 107 predicate places. [2024-06-27 18:28:08,734 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 1129 flow [2024-06-27 18:28:08,734 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 18:28:08,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:08,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:08,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:28:08,735 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:08,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1951924436, now seen corresponding path program 3 times [2024-06-27 18:28:08,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:08,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416054947] [2024-06-27 18:28:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:08,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:09,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:09,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416054947] [2024-06-27 18:28:09,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416054947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:09,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:09,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:09,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453129565] [2024-06-27 18:28:09,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:09,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:09,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:09,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:09,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:09,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:09,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 1129 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:09,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:09,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:09,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:09,802 INFO L124 PetriNetUnfolderBase]: 1078/1931 cut-off events. [2024-06-27 18:28:09,802 INFO L125 PetriNetUnfolderBase]: For 33865/33865 co-relation queries the response was YES. [2024-06-27 18:28:09,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9271 conditions, 1931 events. 1078/1931 cut-off events. For 33865/33865 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11167 event pairs, 183 based on Foata normal form. 1/1875 useless extension candidates. Maximal degree in co-relation 9201. Up to 1397 conditions per place. [2024-06-27 18:28:09,815 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 122 selfloop transitions, 43 changer transitions 0/172 dead transitions. [2024-06-27 18:28:09,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 172 transitions, 1653 flow [2024-06-27 18:28:09,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:28:09,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 18:28:09,816 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 1129 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:28:09,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 172 transitions, 1653 flow [2024-06-27 18:28:09,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 172 transitions, 1589 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:09,866 INFO L231 Difference]: Finished difference. Result has 153 places, 134 transitions, 1156 flow [2024-06-27 18:28:09,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1156, PETRI_PLACES=153, PETRI_TRANSITIONS=134} [2024-06-27 18:28:09,867 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2024-06-27 18:28:09,867 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 134 transitions, 1156 flow [2024-06-27 18:28:09,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:09,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:09,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:09,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:28:09,868 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:09,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:09,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1951924684, now seen corresponding path program 1 times [2024-06-27 18:28:09,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:09,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25119909] [2024-06-27 18:28:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:09,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:10,489 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 18:28:10,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:10,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25119909] [2024-06-27 18:28:10,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25119909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:10,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:10,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:10,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585147961] [2024-06-27 18:28:10,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:10,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:10,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:10,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:10,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:10,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:10,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 134 transitions, 1156 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:10,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:10,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:10,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:10,965 INFO L124 PetriNetUnfolderBase]: 1140/2021 cut-off events. [2024-06-27 18:28:10,965 INFO L125 PetriNetUnfolderBase]: For 38765/38765 co-relation queries the response was YES. [2024-06-27 18:28:10,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9817 conditions, 2021 events. 1140/2021 cut-off events. For 38765/38765 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11653 event pairs, 214 based on Foata normal form. 3/1970 useless extension candidates. Maximal degree in co-relation 9746. Up to 1331 conditions per place. [2024-06-27 18:28:10,978 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 133 selfloop transitions, 42 changer transitions 0/182 dead transitions. [2024-06-27 18:28:10,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 182 transitions, 1752 flow [2024-06-27 18:28:10,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:10,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 18:28:10,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-06-27 18:28:10,980 INFO L175 Difference]: Start difference. First operand has 153 places, 134 transitions, 1156 flow. Second operand 9 states and 174 transitions. [2024-06-27 18:28:10,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 182 transitions, 1752 flow [2024-06-27 18:28:11,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 182 transitions, 1661 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:11,022 INFO L231 Difference]: Finished difference. Result has 154 places, 138 transitions, 1190 flow [2024-06-27 18:28:11,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1190, PETRI_PLACES=154, PETRI_TRANSITIONS=138} [2024-06-27 18:28:11,023 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-27 18:28:11,023 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 138 transitions, 1190 flow [2024-06-27 18:28:11,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:11,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:11,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:11,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:28:11,024 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:11,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:11,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2124414326, now seen corresponding path program 4 times [2024-06-27 18:28:11,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:11,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045014795] [2024-06-27 18:28:11,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:11,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:11,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:11,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045014795] [2024-06-27 18:28:11,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045014795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:11,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:11,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:11,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369671925] [2024-06-27 18:28:11,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:11,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:11,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:11,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:11,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:11,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:11,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 138 transitions, 1190 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:11,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:11,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:11,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:12,112 INFO L124 PetriNetUnfolderBase]: 1177/2085 cut-off events. [2024-06-27 18:28:12,112 INFO L125 PetriNetUnfolderBase]: For 41105/41105 co-relation queries the response was YES. [2024-06-27 18:28:12,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10330 conditions, 2085 events. 1177/2085 cut-off events. For 41105/41105 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12057 event pairs, 204 based on Foata normal form. 1/2031 useless extension candidates. Maximal degree in co-relation 10258. Up to 1533 conditions per place. [2024-06-27 18:28:12,126 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 129 selfloop transitions, 45 changer transitions 0/181 dead transitions. [2024-06-27 18:28:12,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 181 transitions, 1932 flow [2024-06-27 18:28:12,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:28:12,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-27 18:28:12,127 INFO L175 Difference]: Start difference. First operand has 154 places, 138 transitions, 1190 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:28:12,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 181 transitions, 1932 flow [2024-06-27 18:28:12,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 181 transitions, 1882 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:12,182 INFO L231 Difference]: Finished difference. Result has 158 places, 144 transitions, 1283 flow [2024-06-27 18:28:12,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1283, PETRI_PLACES=158, PETRI_TRANSITIONS=144} [2024-06-27 18:28:12,183 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 115 predicate places. [2024-06-27 18:28:12,183 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 144 transitions, 1283 flow [2024-06-27 18:28:12,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:12,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:12,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:12,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:28:12,183 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:12,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2124407816, now seen corresponding path program 5 times [2024-06-27 18:28:12,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:12,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268285012] [2024-06-27 18:28:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:12,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:12,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:12,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268285012] [2024-06-27 18:28:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268285012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:12,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:12,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:12,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121036875] [2024-06-27 18:28:12,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:12,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:12,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:12,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:12,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:12,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 144 transitions, 1283 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:12,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:12,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:12,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:13,268 INFO L124 PetriNetUnfolderBase]: 1175/2082 cut-off events. [2024-06-27 18:28:13,268 INFO L125 PetriNetUnfolderBase]: For 42152/42152 co-relation queries the response was YES. [2024-06-27 18:28:13,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10466 conditions, 2082 events. 1175/2082 cut-off events. For 42152/42152 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12058 event pairs, 217 based on Foata normal form. 1/2028 useless extension candidates. Maximal degree in co-relation 10392. Up to 1531 conditions per place. [2024-06-27 18:28:13,283 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 127 selfloop transitions, 46 changer transitions 0/180 dead transitions. [2024-06-27 18:28:13,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 180 transitions, 1901 flow [2024-06-27 18:28:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:28:13,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 18:28:13,285 INFO L175 Difference]: Start difference. First operand has 158 places, 144 transitions, 1283 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:28:13,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 180 transitions, 1901 flow [2024-06-27 18:28:13,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 180 transitions, 1829 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:13,352 INFO L231 Difference]: Finished difference. Result has 163 places, 144 transitions, 1308 flow [2024-06-27 18:28:13,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1308, PETRI_PLACES=163, PETRI_TRANSITIONS=144} [2024-06-27 18:28:13,352 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 120 predicate places. [2024-06-27 18:28:13,353 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 144 transitions, 1308 flow [2024-06-27 18:28:13,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:13,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:13,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:13,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:28:13,353 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:13,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:13,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2124653584, now seen corresponding path program 2 times [2024-06-27 18:28:13,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:13,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342460233] [2024-06-27 18:28:13,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:13,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:13,952 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 18:28:13,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:13,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342460233] [2024-06-27 18:28:13,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342460233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:13,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:13,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:13,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595388816] [2024-06-27 18:28:13,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:13,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:13,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:13,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:13,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:14,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:14,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 144 transitions, 1308 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:14,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:14,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:14,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:14,458 INFO L124 PetriNetUnfolderBase]: 1247/2173 cut-off events. [2024-06-27 18:28:14,458 INFO L125 PetriNetUnfolderBase]: For 48821/48821 co-relation queries the response was YES. [2024-06-27 18:28:14,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11115 conditions, 2173 events. 1247/2173 cut-off events. For 48821/48821 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12516 event pairs, 218 based on Foata normal form. 3/2127 useless extension candidates. Maximal degree in co-relation 11040. Up to 1437 conditions per place. [2024-06-27 18:28:14,473 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 140 selfloop transitions, 43 changer transitions 0/190 dead transitions. [2024-06-27 18:28:14,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 190 transitions, 2004 flow [2024-06-27 18:28:14,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 18:28:14,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928774928774929 [2024-06-27 18:28:14,474 INFO L175 Difference]: Start difference. First operand has 163 places, 144 transitions, 1308 flow. Second operand 9 states and 173 transitions. [2024-06-27 18:28:14,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 190 transitions, 2004 flow [2024-06-27 18:28:14,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 190 transitions, 1918 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:14,548 INFO L231 Difference]: Finished difference. Result has 165 places, 148 transitions, 1349 flow [2024-06-27 18:28:14,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1349, PETRI_PLACES=165, PETRI_TRANSITIONS=148} [2024-06-27 18:28:14,548 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 122 predicate places. [2024-06-27 18:28:14,549 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 148 transitions, 1349 flow [2024-06-27 18:28:14,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:14,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:14,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:14,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:28:14,550 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:14,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:14,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2124644966, now seen corresponding path program 6 times [2024-06-27 18:28:14,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:14,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288225662] [2024-06-27 18:28:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:14,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:15,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:15,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288225662] [2024-06-27 18:28:15,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288225662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:15,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:15,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:15,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692008255] [2024-06-27 18:28:15,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:15,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:15,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:15,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:15,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:15,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:15,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 148 transitions, 1349 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:15,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:15,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:15,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:15,682 INFO L124 PetriNetUnfolderBase]: 1245/2211 cut-off events. [2024-06-27 18:28:15,682 INFO L125 PetriNetUnfolderBase]: For 48661/48661 co-relation queries the response was YES. [2024-06-27 18:28:15,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11232 conditions, 2211 events. 1245/2211 cut-off events. For 48661/48661 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13008 event pairs, 239 based on Foata normal form. 1/2151 useless extension candidates. Maximal degree in co-relation 11156. Up to 1640 conditions per place. [2024-06-27 18:28:15,696 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 128 selfloop transitions, 48 changer transitions 0/183 dead transitions. [2024-06-27 18:28:15,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 183 transitions, 1897 flow [2024-06-27 18:28:15,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:15,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:15,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:28:15,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47293447293447294 [2024-06-27 18:28:15,697 INFO L175 Difference]: Start difference. First operand has 165 places, 148 transitions, 1349 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:28:15,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 183 transitions, 1897 flow [2024-06-27 18:28:15,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 183 transitions, 1822 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:15,785 INFO L231 Difference]: Finished difference. Result has 169 places, 148 transitions, 1375 flow [2024-06-27 18:28:15,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=169, PETRI_TRANSITIONS=148} [2024-06-27 18:28:15,786 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-06-27 18:28:15,786 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 148 transitions, 1375 flow [2024-06-27 18:28:15,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:15,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:15,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:15,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:28:15,786 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:15,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:15,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2124414574, now seen corresponding path program 3 times [2024-06-27 18:28:15,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:15,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190351721] [2024-06-27 18:28:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:15,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:16,418 INFO 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 18:28:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190351721] [2024-06-27 18:28:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190351721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:16,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:16,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:16,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374018844] [2024-06-27 18:28:16,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:16,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:16,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:16,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:16,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:16,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:16,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 148 transitions, 1375 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:16,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:16,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:16,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:16,979 INFO L124 PetriNetUnfolderBase]: 1278/2221 cut-off events. [2024-06-27 18:28:16,979 INFO L125 PetriNetUnfolderBase]: For 52663/52663 co-relation queries the response was YES. [2024-06-27 18:28:16,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11307 conditions, 2221 events. 1278/2221 cut-off events. For 52663/52663 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12825 event pairs, 230 based on Foata normal form. 3/2175 useless extension candidates. Maximal degree in co-relation 11230. Up to 1458 conditions per place. [2024-06-27 18:28:16,996 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 145 selfloop transitions, 42 changer transitions 0/194 dead transitions. [2024-06-27 18:28:16,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 194 transitions, 2071 flow [2024-06-27 18:28:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-27 18:28:16,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2024-06-27 18:28:16,997 INFO L175 Difference]: Start difference. First operand has 169 places, 148 transitions, 1375 flow. Second operand 9 states and 177 transitions. [2024-06-27 18:28:16,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 194 transitions, 2071 flow [2024-06-27 18:28:17,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 194 transitions, 1959 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:17,098 INFO L231 Difference]: Finished difference. Result has 169 places, 150 transitions, 1366 flow [2024-06-27 18:28:17,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1366, PETRI_PLACES=169, PETRI_TRANSITIONS=150} [2024-06-27 18:28:17,098 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-06-27 18:28:17,099 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 150 transitions, 1366 flow [2024-06-27 18:28:17,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:17,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:17,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:17,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:28:17,102 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:17,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:17,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2124645214, now seen corresponding path program 4 times [2024-06-27 18:28:17,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:17,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951568322] [2024-06-27 18:28:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:17,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:17,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:17,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951568322] [2024-06-27 18:28:17,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951568322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:17,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:17,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:17,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604944326] [2024-06-27 18:28:17,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:17,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:17,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:17,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:17,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:17,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:17,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 150 transitions, 1366 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:17,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:17,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:17,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:18,232 INFO L124 PetriNetUnfolderBase]: 1272/2212 cut-off events. [2024-06-27 18:28:18,232 INFO L125 PetriNetUnfolderBase]: For 52257/52257 co-relation queries the response was YES. [2024-06-27 18:28:18,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11227 conditions, 2212 events. 1272/2212 cut-off events. For 52257/52257 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12754 event pairs, 228 based on Foata normal form. 3/2166 useless extension candidates. Maximal degree in co-relation 11149. Up to 1454 conditions per place. [2024-06-27 18:28:18,244 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 143 selfloop transitions, 43 changer transitions 0/193 dead transitions. [2024-06-27 18:28:18,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 193 transitions, 1962 flow [2024-06-27 18:28:18,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:18,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:28:18,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985754985754986 [2024-06-27 18:28:18,245 INFO L175 Difference]: Start difference. First operand has 169 places, 150 transitions, 1366 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:28:18,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 193 transitions, 1962 flow [2024-06-27 18:28:18,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 193 transitions, 1883 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:18,354 INFO L231 Difference]: Finished difference. Result has 172 places, 150 transitions, 1378 flow [2024-06-27 18:28:18,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1378, PETRI_PLACES=172, PETRI_TRANSITIONS=150} [2024-06-27 18:28:18,354 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 129 predicate places. [2024-06-27 18:28:18,354 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 150 transitions, 1378 flow [2024-06-27 18:28:18,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:18,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:18,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:18,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:28:18,355 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:18,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:18,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1360267842, now seen corresponding path program 4 times [2024-06-27 18:28:18,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:18,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36090598] [2024-06-27 18:28:18,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:18,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:18,940 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 18:28:18,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:18,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36090598] [2024-06-27 18:28:18,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36090598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:18,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:18,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:18,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010613010] [2024-06-27 18:28:18,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:18,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:18,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:18,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:18,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:19,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:19,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 150 transitions, 1378 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 18:28:19,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:19,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:19,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:19,394 INFO L124 PetriNetUnfolderBase]: 1197/2196 cut-off events. [2024-06-27 18:28:19,394 INFO L125 PetriNetUnfolderBase]: For 52792/52792 co-relation queries the response was YES. [2024-06-27 18:28:19,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11001 conditions, 2196 events. 1197/2196 cut-off events. For 52792/52792 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13298 event pairs, 228 based on Foata normal form. 1/2130 useless extension candidates. Maximal degree in co-relation 10922. Up to 1617 conditions per place. [2024-06-27 18:28:19,409 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 127 selfloop transitions, 34 changer transitions 0/187 dead transitions. [2024-06-27 18:28:19,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 187 transitions, 1924 flow [2024-06-27 18:28:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 18:28:19,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49002849002849 [2024-06-27 18:28:19,410 INFO L175 Difference]: Start difference. First operand has 172 places, 150 transitions, 1378 flow. Second operand 9 states and 172 transitions. [2024-06-27 18:28:19,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 187 transitions, 1924 flow [2024-06-27 18:28:19,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 1819 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:19,490 INFO L231 Difference]: Finished difference. Result has 172 places, 152 transitions, 1368 flow [2024-06-27 18:28:19,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1368, PETRI_PLACES=172, PETRI_TRANSITIONS=152} [2024-06-27 18:28:19,491 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 129 predicate places. [2024-06-27 18:28:19,491 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 152 transitions, 1368 flow [2024-06-27 18:28:19,491 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 18:28:19,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:19,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:19,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:28:19,491 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:19,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:19,491 INFO L85 PathProgramCache]: Analyzing trace with hash -363340578, now seen corresponding path program 5 times [2024-06-27 18:28:19,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:19,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275273183] [2024-06-27 18:28:19,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:19,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:20,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:20,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275273183] [2024-06-27 18:28:20,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275273183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:20,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:20,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:20,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494506932] [2024-06-27 18:28:20,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:20,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:20,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:20,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:20,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:20,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:20,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 152 transitions, 1368 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:20,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:20,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:20,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:20,683 INFO L124 PetriNetUnfolderBase]: 1316/2302 cut-off events. [2024-06-27 18:28:20,683 INFO L125 PetriNetUnfolderBase]: For 56658/56658 co-relation queries the response was YES. [2024-06-27 18:28:20,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11521 conditions, 2302 events. 1316/2302 cut-off events. For 56658/56658 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13531 event pairs, 331 based on Foata normal form. 3/2256 useless extension candidates. Maximal degree in co-relation 11441. Up to 2006 conditions per place. [2024-06-27 18:28:20,699 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 158 selfloop transitions, 18 changer transitions 0/183 dead transitions. [2024-06-27 18:28:20,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 183 transitions, 1820 flow [2024-06-27 18:28:20,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:28:20,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 18:28:20,700 INFO L175 Difference]: Start difference. First operand has 172 places, 152 transitions, 1368 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:28:20,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 183 transitions, 1820 flow [2024-06-27 18:28:20,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 183 transitions, 1755 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:20,801 INFO L231 Difference]: Finished difference. Result has 175 places, 154 transitions, 1368 flow [2024-06-27 18:28:20,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1368, PETRI_PLACES=175, PETRI_TRANSITIONS=154} [2024-06-27 18:28:20,801 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-06-27 18:28:20,801 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 154 transitions, 1368 flow [2024-06-27 18:28:20,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:20,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:20,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:20,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:28:20,802 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:20,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:20,802 INFO L85 PathProgramCache]: Analyzing trace with hash 587119976, now seen corresponding path program 1 times [2024-06-27 18:28:20,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:20,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674923682] [2024-06-27 18:28:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:20,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:21,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:21,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674923682] [2024-06-27 18:28:21,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674923682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:21,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:21,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:21,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779166375] [2024-06-27 18:28:21,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:21,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:21,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:21,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:21,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:21,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:21,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 154 transitions, 1368 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 18:28:21,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:21,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:21,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:22,218 INFO L124 PetriNetUnfolderBase]: 1193/2167 cut-off events. [2024-06-27 18:28:22,218 INFO L125 PetriNetUnfolderBase]: For 55301/55307 co-relation queries the response was YES. [2024-06-27 18:28:22,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10636 conditions, 2167 events. 1193/2167 cut-off events. For 55301/55307 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13147 event pairs, 306 based on Foata normal form. 8/2122 useless extension candidates. Maximal degree in co-relation 10555. Up to 1797 conditions per place. [2024-06-27 18:28:22,233 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 140 selfloop transitions, 19 changer transitions 0/184 dead transitions. [2024-06-27 18:28:22,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 184 transitions, 1786 flow [2024-06-27 18:28:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:28:22,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45014245014245013 [2024-06-27 18:28:22,234 INFO L175 Difference]: Start difference. First operand has 175 places, 154 transitions, 1368 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:28:22,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 184 transitions, 1786 flow [2024-06-27 18:28:22,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 184 transitions, 1743 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:22,348 INFO L231 Difference]: Finished difference. Result has 178 places, 159 transitions, 1422 flow [2024-06-27 18:28:22,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1422, PETRI_PLACES=178, PETRI_TRANSITIONS=159} [2024-06-27 18:28:22,348 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 135 predicate places. [2024-06-27 18:28:22,348 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 159 transitions, 1422 flow [2024-06-27 18:28:22,349 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 18:28:22,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:22,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:22,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:28:22,349 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:22,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:22,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1125124210, now seen corresponding path program 5 times [2024-06-27 18:28:22,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:22,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198567666] [2024-06-27 18:28:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:22,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:22,966 INFO 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 18:28:22,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:22,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198567666] [2024-06-27 18:28:22,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198567666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:22,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:22,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:22,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318942215] [2024-06-27 18:28:22,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:22,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:22,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:22,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:23,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:23,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 159 transitions, 1422 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 18:28:23,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:23,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:23,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:23,441 INFO L124 PetriNetUnfolderBase]: 1230/2252 cut-off events. [2024-06-27 18:28:23,442 INFO L125 PetriNetUnfolderBase]: For 56247/56255 co-relation queries the response was YES. [2024-06-27 18:28:23,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11143 conditions, 2252 events. 1230/2252 cut-off events. For 56247/56255 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13748 event pairs, 304 based on Foata normal form. 1/2184 useless extension candidates. Maximal degree in co-relation 11060. Up to 1847 conditions per place. [2024-06-27 18:28:23,457 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 146 selfloop transitions, 16 changer transitions 0/188 dead transitions. [2024-06-27 18:28:23,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 188 transitions, 1846 flow [2024-06-27 18:28:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:23,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 18:28:23,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452991452991453 [2024-06-27 18:28:23,458 INFO L175 Difference]: Start difference. First operand has 178 places, 159 transitions, 1422 flow. Second operand 9 states and 159 transitions. [2024-06-27 18:28:23,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 188 transitions, 1846 flow [2024-06-27 18:28:23,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 188 transitions, 1783 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:23,563 INFO L231 Difference]: Finished difference. Result has 181 places, 159 transitions, 1396 flow [2024-06-27 18:28:23,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1396, PETRI_PLACES=181, PETRI_TRANSITIONS=159} [2024-06-27 18:28:23,563 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 138 predicate places. [2024-06-27 18:28:23,564 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 159 transitions, 1396 flow [2024-06-27 18:28:23,564 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 18:28:23,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:23,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:23,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:28:23,564 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:23,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:23,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1125124024, now seen corresponding path program 7 times [2024-06-27 18:28:23,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:23,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59381699] [2024-06-27 18:28:23,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:23,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:24,149 INFO 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 18:28:24,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:24,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59381699] [2024-06-27 18:28:24,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59381699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:24,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:24,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:24,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881079938] [2024-06-27 18:28:24,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:24,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:24,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:24,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:24,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:24,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:24,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 159 transitions, 1396 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:24,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:24,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:24,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:24,702 INFO L124 PetriNetUnfolderBase]: 1327/2316 cut-off events. [2024-06-27 18:28:24,702 INFO L125 PetriNetUnfolderBase]: For 58154/58154 co-relation queries the response was YES. [2024-06-27 18:28:24,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11581 conditions, 2316 events. 1327/2316 cut-off events. For 58154/58154 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13558 event pairs, 325 based on Foata normal form. 1/2268 useless extension candidates. Maximal degree in co-relation 11497. Up to 1988 conditions per place. [2024-06-27 18:28:24,717 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 156 selfloop transitions, 28 changer transitions 0/191 dead transitions. [2024-06-27 18:28:24,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 191 transitions, 1980 flow [2024-06-27 18:28:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 18:28:24,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:28:24,718 INFO L175 Difference]: Start difference. First operand has 181 places, 159 transitions, 1396 flow. Second operand 9 states and 156 transitions. [2024-06-27 18:28:24,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 191 transitions, 1980 flow [2024-06-27 18:28:24,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 191 transitions, 1902 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:28:24,830 INFO L231 Difference]: Finished difference. Result has 180 places, 161 transitions, 1397 flow [2024-06-27 18:28:24,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1397, PETRI_PLACES=180, PETRI_TRANSITIONS=161} [2024-06-27 18:28:24,830 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-27 18:28:24,830 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 161 transitions, 1397 flow [2024-06-27 18:28:24,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:24,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:24,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:24,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:28:24,831 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:24,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:24,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1124886874, now seen corresponding path program 8 times [2024-06-27 18:28:24,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:24,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684935816] [2024-06-27 18:28:24,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:24,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:25,452 INFO 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 18:28:25,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:25,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684935816] [2024-06-27 18:28:25,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684935816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:25,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:25,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:25,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451765883] [2024-06-27 18:28:25,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:25,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:25,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:25,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:25,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:25,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:25,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 161 transitions, 1397 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:25,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:25,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:25,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:25,956 INFO L124 PetriNetUnfolderBase]: 1351/2353 cut-off events. [2024-06-27 18:28:25,956 INFO L125 PetriNetUnfolderBase]: For 61341/61341 co-relation queries the response was YES. [2024-06-27 18:28:25,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11858 conditions, 2353 events. 1351/2353 cut-off events. For 61341/61341 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13787 event pairs, 330 based on Foata normal form. 1/2306 useless extension candidates. Maximal degree in co-relation 11773. Up to 2014 conditions per place. [2024-06-27 18:28:25,973 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 160 selfloop transitions, 29 changer transitions 0/196 dead transitions. [2024-06-27 18:28:25,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 196 transitions, 2119 flow [2024-06-27 18:28:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 18:28:25,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452991452991453 [2024-06-27 18:28:25,975 INFO L175 Difference]: Start difference. First operand has 180 places, 161 transitions, 1397 flow. Second operand 9 states and 159 transitions. [2024-06-27 18:28:25,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 196 transitions, 2119 flow [2024-06-27 18:28:26,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 196 transitions, 1974 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:26,137 INFO L231 Difference]: Finished difference. Result has 180 places, 165 transitions, 1359 flow [2024-06-27 18:28:26,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1359, PETRI_PLACES=180, PETRI_TRANSITIONS=165} [2024-06-27 18:28:26,138 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-27 18:28:26,138 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 165 transitions, 1359 flow [2024-06-27 18:28:26,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:26,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:26,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:26,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:28:26,138 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:26,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:26,138 INFO L85 PathProgramCache]: Analyzing trace with hash -368707588, now seen corresponding path program 6 times [2024-06-27 18:28:26,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:26,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013935873] [2024-06-27 18:28:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:26,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:26,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013935873] [2024-06-27 18:28:26,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013935873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:26,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:26,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:26,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566866110] [2024-06-27 18:28:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:26,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:26,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:26,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:26,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:26,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:26,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 165 transitions, 1359 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:26,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:26,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:26,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:27,437 INFO L124 PetriNetUnfolderBase]: 1462/2584 cut-off events. [2024-06-27 18:28:27,437 INFO L125 PetriNetUnfolderBase]: For 74604/74604 co-relation queries the response was YES. [2024-06-27 18:28:27,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12960 conditions, 2584 events. 1462/2584 cut-off events. For 74604/74604 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15684 event pairs, 338 based on Foata normal form. 3/2522 useless extension candidates. Maximal degree in co-relation 12874. Up to 1916 conditions per place. [2024-06-27 18:28:27,452 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 170 selfloop transitions, 34 changer transitions 0/211 dead transitions. [2024-06-27 18:28:27,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 211 transitions, 2269 flow [2024-06-27 18:28:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:28:27,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-27 18:28:27,453 INFO L175 Difference]: Start difference. First operand has 180 places, 165 transitions, 1359 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:28:27,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 211 transitions, 2269 flow [2024-06-27 18:28:27,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 211 transitions, 2228 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:27,601 INFO L231 Difference]: Finished difference. Result has 184 places, 171 transitions, 1463 flow [2024-06-27 18:28:27,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1463, PETRI_PLACES=184, PETRI_TRANSITIONS=171} [2024-06-27 18:28:27,602 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2024-06-27 18:28:27,602 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 171 transitions, 1463 flow [2024-06-27 18:28:27,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:27,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:27,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:27,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:28:27,602 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:27,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash 578538308, now seen corresponding path program 9 times [2024-06-27 18:28:27,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:27,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243176340] [2024-06-27 18:28:27,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:27,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:28,187 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 18:28:28,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:28,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243176340] [2024-06-27 18:28:28,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243176340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:28,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:28,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:28,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102553655] [2024-06-27 18:28:28,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:28,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:28,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:28,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:28,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:28,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:28,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 171 transitions, 1463 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:28,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:28,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:28,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:28,716 INFO L124 PetriNetUnfolderBase]: 1460/2517 cut-off events. [2024-06-27 18:28:28,716 INFO L125 PetriNetUnfolderBase]: For 73871/73871 co-relation queries the response was YES. [2024-06-27 18:28:28,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13028 conditions, 2517 events. 1460/2517 cut-off events. For 73871/73871 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 14843 event pairs, 354 based on Foata normal form. 1/2471 useless extension candidates. Maximal degree in co-relation 12941. Up to 2183 conditions per place. [2024-06-27 18:28:28,733 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 164 selfloop transitions, 30 changer transitions 0/201 dead transitions. [2024-06-27 18:28:28,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 201 transitions, 2055 flow [2024-06-27 18:28:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:28,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:28,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:28:28,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472934472934473 [2024-06-27 18:28:28,734 INFO L175 Difference]: Start difference. First operand has 184 places, 171 transitions, 1463 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:28:28,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 201 transitions, 2055 flow [2024-06-27 18:28:28,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 201 transitions, 1967 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:28,942 INFO L231 Difference]: Finished difference. Result has 188 places, 171 transitions, 1440 flow [2024-06-27 18:28:28,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1440, PETRI_PLACES=188, PETRI_TRANSITIONS=171} [2024-06-27 18:28:28,942 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 145 predicate places. [2024-06-27 18:28:28,942 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 171 transitions, 1440 flow [2024-06-27 18:28:28,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:28,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:28,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:28,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:28:28,943 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:28,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:28,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1125117266, now seen corresponding path program 7 times [2024-06-27 18:28:28,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:28,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530029665] [2024-06-27 18:28:28,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:28,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:29,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:29,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530029665] [2024-06-27 18:28:29,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530029665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:29,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:29,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:29,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057901394] [2024-06-27 18:28:29,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:29,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:29,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:29,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:29,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 171 transitions, 1440 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:29,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:29,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:29,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:30,140 INFO L124 PetriNetUnfolderBase]: 1454/2532 cut-off events. [2024-06-27 18:28:30,140 INFO L125 PetriNetUnfolderBase]: For 73283/73283 co-relation queries the response was YES. [2024-06-27 18:28:30,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12648 conditions, 2532 events. 1454/2532 cut-off events. For 73283/73283 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15110 event pairs, 308 based on Foata normal form. 3/2482 useless extension candidates. Maximal degree in co-relation 12560. Up to 1909 conditions per place. [2024-06-27 18:28:30,157 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 163 selfloop transitions, 37 changer transitions 0/207 dead transitions. [2024-06-27 18:28:30,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 207 transitions, 2064 flow [2024-06-27 18:28:30,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:28:30,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672364672364672 [2024-06-27 18:28:30,158 INFO L175 Difference]: Start difference. First operand has 188 places, 171 transitions, 1440 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:28:30,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 207 transitions, 2064 flow [2024-06-27 18:28:30,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 207 transitions, 2001 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:30,319 INFO L231 Difference]: Finished difference. Result has 190 places, 171 transitions, 1456 flow [2024-06-27 18:28:30,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1456, PETRI_PLACES=190, PETRI_TRANSITIONS=171} [2024-06-27 18:28:30,319 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-27 18:28:30,319 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 171 transitions, 1456 flow [2024-06-27 18:28:30,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:30,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:30,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:30,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:28:30,320 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:30,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:30,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1124878256, now seen corresponding path program 8 times [2024-06-27 18:28:30,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:30,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397637427] [2024-06-27 18:28:30,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:30,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:30,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:30,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397637427] [2024-06-27 18:28:30,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397637427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:30,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:30,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:30,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657391391] [2024-06-27 18:28:30,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:30,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:30,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:30,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:30,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:30,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:30,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 171 transitions, 1456 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:30,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:30,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:30,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:31,484 INFO L124 PetriNetUnfolderBase]: 1448/2548 cut-off events. [2024-06-27 18:28:31,484 INFO L125 PetriNetUnfolderBase]: For 72419/72419 co-relation queries the response was YES. [2024-06-27 18:28:31,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12643 conditions, 2548 events. 1448/2548 cut-off events. For 72419/72419 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15396 event pairs, 331 based on Foata normal form. 3/2491 useless extension candidates. Maximal degree in co-relation 12554. Up to 1905 conditions per place. [2024-06-27 18:28:31,506 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 165 selfloop transitions, 35 changer transitions 0/207 dead transitions. [2024-06-27 18:28:31,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 207 transitions, 2082 flow [2024-06-27 18:28:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:28:31,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700854700854701 [2024-06-27 18:28:31,507 INFO L175 Difference]: Start difference. First operand has 190 places, 171 transitions, 1456 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:28:31,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 207 transitions, 2082 flow [2024-06-27 18:28:31,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 207 transitions, 1976 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:31,664 INFO L231 Difference]: Finished difference. Result has 191 places, 171 transitions, 1425 flow [2024-06-27 18:28:31,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1425, PETRI_PLACES=191, PETRI_TRANSITIONS=171} [2024-06-27 18:28:31,665 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 148 predicate places. [2024-06-27 18:28:31,665 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 171 transitions, 1425 flow [2024-06-27 18:28:31,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:31,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:31,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:31,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:28:31,665 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:31,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:31,665 INFO L85 PathProgramCache]: Analyzing trace with hash -812081126, now seen corresponding path program 9 times [2024-06-27 18:28:31,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:31,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834046165] [2024-06-27 18:28:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:31,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:32,238 INFO 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 18:28:32,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:32,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834046165] [2024-06-27 18:28:32,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834046165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:32,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:32,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:32,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955370530] [2024-06-27 18:28:32,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:32,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:32,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:32,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:32,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:32,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:32,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 171 transitions, 1425 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:32,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:32,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:32,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:32,850 INFO L124 PetriNetUnfolderBase]: 1481/2570 cut-off events. [2024-06-27 18:28:32,850 INFO L125 PetriNetUnfolderBase]: For 74713/74713 co-relation queries the response was YES. [2024-06-27 18:28:32,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12791 conditions, 2570 events. 1481/2570 cut-off events. For 74713/74713 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15358 event pairs, 350 based on Foata normal form. 3/2521 useless extension candidates. Maximal degree in co-relation 12701. Up to 2126 conditions per place. [2024-06-27 18:28:32,869 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 174 selfloop transitions, 26 changer transitions 0/207 dead transitions. [2024-06-27 18:28:32,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 207 transitions, 2065 flow [2024-06-27 18:28:32,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 18:28:32,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45584045584045585 [2024-06-27 18:28:32,870 INFO L175 Difference]: Start difference. First operand has 191 places, 171 transitions, 1425 flow. Second operand 9 states and 160 transitions. [2024-06-27 18:28:32,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 207 transitions, 2065 flow [2024-06-27 18:28:33,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 207 transitions, 1986 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:33,018 INFO L231 Difference]: Finished difference. Result has 192 places, 173 transitions, 1429 flow [2024-06-27 18:28:33,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1429, PETRI_PLACES=192, PETRI_TRANSITIONS=173} [2024-06-27 18:28:33,018 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 149 predicate places. [2024-06-27 18:28:33,019 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 173 transitions, 1429 flow [2024-06-27 18:28:33,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:33,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:33,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:33,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:28:33,019 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:33,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:33,020 INFO L85 PathProgramCache]: Analyzing trace with hash -119090606, now seen corresponding path program 10 times [2024-06-27 18:28:33,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:33,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693570502] [2024-06-27 18:28:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:33,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:33,588 INFO 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 18:28:33,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:33,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693570502] [2024-06-27 18:28:33,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693570502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:33,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:33,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547388329] [2024-06-27 18:28:33,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:33,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:33,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:33,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:33,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:33,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:33,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 173 transitions, 1429 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:33,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:33,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:33,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:34,147 INFO L124 PetriNetUnfolderBase]: 1479/2551 cut-off events. [2024-06-27 18:28:34,147 INFO L125 PetriNetUnfolderBase]: For 72322/72322 co-relation queries the response was YES. [2024-06-27 18:28:34,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12663 conditions, 2551 events. 1479/2551 cut-off events. For 72322/72322 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15094 event pairs, 390 based on Foata normal form. 1/2504 useless extension candidates. Maximal degree in co-relation 12572. Up to 2311 conditions per place. [2024-06-27 18:28:34,166 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 176 selfloop transitions, 17 changer transitions 0/200 dead transitions. [2024-06-27 18:28:34,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 200 transitions, 1901 flow [2024-06-27 18:28:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:28:34,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-06-27 18:28:34,167 INFO L175 Difference]: Start difference. First operand has 192 places, 173 transitions, 1429 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:28:34,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 200 transitions, 1901 flow [2024-06-27 18:28:34,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 200 transitions, 1810 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:34,405 INFO L231 Difference]: Finished difference. Result has 193 places, 173 transitions, 1377 flow [2024-06-27 18:28:34,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1377, PETRI_PLACES=193, PETRI_TRANSITIONS=173} [2024-06-27 18:28:34,406 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2024-06-27 18:28:34,406 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 173 transitions, 1377 flow [2024-06-27 18:28:34,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:34,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:34,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:34,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:28:34,406 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:34,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:34,407 INFO L85 PathProgramCache]: Analyzing trace with hash -812072756, now seen corresponding path program 10 times [2024-06-27 18:28:34,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:34,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136116689] [2024-06-27 18:28:34,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:34,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:34,986 INFO 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 18:28:34,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:34,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136116689] [2024-06-27 18:28:34,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136116689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:34,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:34,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:34,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754072552] [2024-06-27 18:28:34,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:34,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:34,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:34,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:34,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:35,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:35,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 173 transitions, 1377 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:35,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:35,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:35,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:35,561 INFO L124 PetriNetUnfolderBase]: 1473/2562 cut-off events. [2024-06-27 18:28:35,561 INFO L125 PetriNetUnfolderBase]: For 72413/72413 co-relation queries the response was YES. [2024-06-27 18:28:35,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12279 conditions, 2562 events. 1473/2562 cut-off events. For 72413/72413 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15338 event pairs, 364 based on Foata normal form. 3/2512 useless extension candidates. Maximal degree in co-relation 12187. Up to 2119 conditions per place. [2024-06-27 18:28:35,579 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 174 selfloop transitions, 25 changer transitions 0/206 dead transitions. [2024-06-27 18:28:35,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 206 transitions, 1879 flow [2024-06-27 18:28:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 18:28:35,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45584045584045585 [2024-06-27 18:28:35,582 INFO L175 Difference]: Start difference. First operand has 193 places, 173 transitions, 1377 flow. Second operand 9 states and 160 transitions. [2024-06-27 18:28:35,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 206 transitions, 1879 flow [2024-06-27 18:28:35,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 206 transitions, 1808 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:28:35,737 INFO L231 Difference]: Finished difference. Result has 192 places, 173 transitions, 1361 flow [2024-06-27 18:28:35,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1361, PETRI_PLACES=192, PETRI_TRANSITIONS=173} [2024-06-27 18:28:35,737 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 149 predicate places. [2024-06-27 18:28:35,737 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 173 transitions, 1361 flow [2024-06-27 18:28:35,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:35,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:35,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:35,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:28:35,738 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:35,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:35,738 INFO L85 PathProgramCache]: Analyzing trace with hash -800660509, now seen corresponding path program 1 times [2024-06-27 18:28:35,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:35,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543061965] [2024-06-27 18:28:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:35,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:36,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:36,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543061965] [2024-06-27 18:28:36,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543061965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:36,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:36,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:36,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864029393] [2024-06-27 18:28:36,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:36,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:36,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:36,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:36,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 173 transitions, 1361 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 18:28:36,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:36,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:36,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:37,610 INFO L124 PetriNetUnfolderBase]: 1303/2365 cut-off events. [2024-06-27 18:28:37,610 INFO L125 PetriNetUnfolderBase]: For 69631/69637 co-relation queries the response was YES. [2024-06-27 18:28:37,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11275 conditions, 2365 events. 1303/2365 cut-off events. For 69631/69637 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14673 event pairs, 346 based on Foata normal form. 8/2310 useless extension candidates. Maximal degree in co-relation 11182. Up to 1928 conditions per place. [2024-06-27 18:28:37,628 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 153 selfloop transitions, 23 changer transitions 0/205 dead transitions. [2024-06-27 18:28:37,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 205 transitions, 1797 flow [2024-06-27 18:28:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:37,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:37,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 18:28:37,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586894586894587 [2024-06-27 18:28:37,629 INFO L175 Difference]: Start difference. First operand has 192 places, 173 transitions, 1361 flow. Second operand 9 states and 161 transitions. [2024-06-27 18:28:37,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 205 transitions, 1797 flow [2024-06-27 18:28:37,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 205 transitions, 1735 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:37,835 INFO L231 Difference]: Finished difference. Result has 194 places, 175 transitions, 1370 flow [2024-06-27 18:28:37,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1370, PETRI_PLACES=194, PETRI_TRANSITIONS=175} [2024-06-27 18:28:37,835 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 151 predicate places. [2024-06-27 18:28:37,835 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 175 transitions, 1370 flow [2024-06-27 18:28:37,835 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 18:28:37,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:37,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:37,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:28:37,835 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:37,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:37,836 INFO L85 PathProgramCache]: Analyzing trace with hash 984018456, now seen corresponding path program 1 times [2024-06-27 18:28:37,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:37,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608062018] [2024-06-27 18:28:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:37,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:37,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:37,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608062018] [2024-06-27 18:28:37,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608062018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:37,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:37,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:28:37,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408598289] [2024-06-27 18:28:37,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:37,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:28:37,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:37,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:28:37,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:28:37,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-06-27 18:28:37,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 175 transitions, 1370 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:37,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:37,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-06-27 18:28:37,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:38,256 INFO L124 PetriNetUnfolderBase]: 1058/2108 cut-off events. [2024-06-27 18:28:38,256 INFO L125 PetriNetUnfolderBase]: For 48589/49443 co-relation queries the response was YES. [2024-06-27 18:28:38,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8820 conditions, 2108 events. 1058/2108 cut-off events. For 48589/49443 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14186 event pairs, 191 based on Foata normal form. 30/1998 useless extension candidates. Maximal degree in co-relation 8726. Up to 899 conditions per place. [2024-06-27 18:28:38,274 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 95 selfloop transitions, 69 changer transitions 3/278 dead transitions. [2024-06-27 18:28:38,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 278 transitions, 2387 flow [2024-06-27 18:28:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:38,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:38,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:28:38,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217948717948718 [2024-06-27 18:28:38,275 INFO L175 Difference]: Start difference. First operand has 194 places, 175 transitions, 1370 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:28:38,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 278 transitions, 2387 flow [2024-06-27 18:28:38,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 278 transitions, 2269 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:38,377 INFO L231 Difference]: Finished difference. Result has 199 places, 221 transitions, 1855 flow [2024-06-27 18:28:38,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1855, PETRI_PLACES=199, PETRI_TRANSITIONS=221} [2024-06-27 18:28:38,379 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 156 predicate places. [2024-06-27 18:28:38,379 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 221 transitions, 1855 flow [2024-06-27 18:28:38,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:38,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:38,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:38,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:28:38,380 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:38,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:38,380 INFO L85 PathProgramCache]: Analyzing trace with hash -230898904, now seen corresponding path program 1 times [2024-06-27 18:28:38,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:38,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850979549] [2024-06-27 18:28:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:38,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:39,385 INFO 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 18:28:39,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:39,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850979549] [2024-06-27 18:28:39,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850979549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:39,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:39,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:39,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505393949] [2024-06-27 18:28:39,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:39,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:39,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:39,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:39,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:39,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 221 transitions, 1855 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 18:28:39,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:39,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:39,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:40,331 INFO L124 PetriNetUnfolderBase]: 1701/3152 cut-off events. [2024-06-27 18:28:40,332 INFO L125 PetriNetUnfolderBase]: For 73180/73180 co-relation queries the response was YES. [2024-06-27 18:28:40,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14971 conditions, 3152 events. 1701/3152 cut-off events. For 73180/73180 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 20437 event pairs, 372 based on Foata normal form. 1/3142 useless extension candidates. Maximal degree in co-relation 14873. Up to 2480 conditions per place. [2024-06-27 18:28:40,356 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 183 selfloop transitions, 28 changer transitions 29/291 dead transitions. [2024-06-27 18:28:40,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 291 transitions, 2703 flow [2024-06-27 18:28:40,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 18:28:40,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47785547785547783 [2024-06-27 18:28:40,357 INFO L175 Difference]: Start difference. First operand has 199 places, 221 transitions, 1855 flow. Second operand 11 states and 205 transitions. [2024-06-27 18:28:40,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 291 transitions, 2703 flow [2024-06-27 18:28:40,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 291 transitions, 2703 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 18:28:40,569 INFO L231 Difference]: Finished difference. Result has 215 places, 220 transitions, 1942 flow [2024-06-27 18:28:40,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1942, PETRI_PLACES=215, PETRI_TRANSITIONS=220} [2024-06-27 18:28:40,569 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 172 predicate places. [2024-06-27 18:28:40,569 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 220 transitions, 1942 flow [2024-06-27 18:28:40,569 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 18:28:40,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:40,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:40,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:28:40,570 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:40,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:40,570 INFO L85 PathProgramCache]: Analyzing trace with hash -418548568, now seen corresponding path program 2 times [2024-06-27 18:28:40,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:40,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863026438] [2024-06-27 18:28:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:40,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:41,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:41,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863026438] [2024-06-27 18:28:41,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863026438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:41,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:41,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:41,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227170795] [2024-06-27 18:28:41,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:41,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:41,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:41,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:41,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 220 transitions, 1942 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 18:28:41,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:41,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:41,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:42,235 INFO L124 PetriNetUnfolderBase]: 1448/2705 cut-off events. [2024-06-27 18:28:42,235 INFO L125 PetriNetUnfolderBase]: For 77776/77776 co-relation queries the response was YES. [2024-06-27 18:28:42,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14032 conditions, 2705 events. 1448/2705 cut-off events. For 77776/77776 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16995 event pairs, 303 based on Foata normal form. 1/2695 useless extension candidates. Maximal degree in co-relation 13925. Up to 2055 conditions per place. [2024-06-27 18:28:42,258 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 174 selfloop transitions, 53 changer transitions 0/278 dead transitions. [2024-06-27 18:28:42,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 278 transitions, 2848 flow [2024-06-27 18:28:42,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:28:42,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755244755244755 [2024-06-27 18:28:42,259 INFO L175 Difference]: Start difference. First operand has 215 places, 220 transitions, 1942 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:28:42,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 278 transitions, 2848 flow [2024-06-27 18:28:42,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 278 transitions, 2760 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:42,494 INFO L231 Difference]: Finished difference. Result has 220 places, 226 transitions, 2073 flow [2024-06-27 18:28:42,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2073, PETRI_PLACES=220, PETRI_TRANSITIONS=226} [2024-06-27 18:28:42,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-06-27 18:28:42,494 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 226 transitions, 2073 flow [2024-06-27 18:28:42,494 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 18:28:42,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:42,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:42,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:28:42,495 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:42,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:42,495 INFO L85 PathProgramCache]: Analyzing trace with hash -418458358, now seen corresponding path program 3 times [2024-06-27 18:28:42,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:42,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741985879] [2024-06-27 18:28:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:42,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:43,352 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 18:28:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741985879] [2024-06-27 18:28:43,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741985879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:43,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:43,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:43,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935293739] [2024-06-27 18:28:43,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:43,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:43,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:43,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:43,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:43,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 226 transitions, 2073 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 18:28:43,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:43,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:43,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:44,119 INFO L124 PetriNetUnfolderBase]: 1446/2702 cut-off events. [2024-06-27 18:28:44,119 INFO L125 PetriNetUnfolderBase]: For 78523/78523 co-relation queries the response was YES. [2024-06-27 18:28:44,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14081 conditions, 2702 events. 1446/2702 cut-off events. For 78523/78523 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16972 event pairs, 306 based on Foata normal form. 1/2692 useless extension candidates. Maximal degree in co-relation 13974. Up to 2091 conditions per place. [2024-06-27 18:28:44,140 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 172 selfloop transitions, 47 changer transitions 0/270 dead transitions. [2024-06-27 18:28:44,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 270 transitions, 2719 flow [2024-06-27 18:28:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:28:44,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-27 18:28:44,141 INFO L175 Difference]: Start difference. First operand has 220 places, 226 transitions, 2073 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:28:44,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 270 transitions, 2719 flow [2024-06-27 18:28:44,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 270 transitions, 2626 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:44,334 INFO L231 Difference]: Finished difference. Result has 224 places, 226 transitions, 2083 flow [2024-06-27 18:28:44,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2083, PETRI_PLACES=224, PETRI_TRANSITIONS=226} [2024-06-27 18:28:44,335 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 181 predicate places. [2024-06-27 18:28:44,335 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 226 transitions, 2083 flow [2024-06-27 18:28:44,335 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 18:28:44,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:44,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:44,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:28:44,335 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:44,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1045126483, now seen corresponding path program 1 times [2024-06-27 18:28:44,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:44,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661964308] [2024-06-27 18:28:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:44,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:45,025 INFO 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 18:28:45,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:45,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661964308] [2024-06-27 18:28:45,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661964308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:45,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:45,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165758840] [2024-06-27 18:28:45,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:45,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:45,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:45,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:45,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:45,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:45,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 226 transitions, 2083 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:45,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:45,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:45,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:45,736 INFO L124 PetriNetUnfolderBase]: 1533/2805 cut-off events. [2024-06-27 18:28:45,736 INFO L125 PetriNetUnfolderBase]: For 81210/81210 co-relation queries the response was YES. [2024-06-27 18:28:45,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14839 conditions, 2805 events. 1533/2805 cut-off events. For 81210/81210 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17223 event pairs, 325 based on Foata normal form. 1/2797 useless extension candidates. Maximal degree in co-relation 14730. Up to 2334 conditions per place. [2024-06-27 18:28:45,759 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 209 selfloop transitions, 34 changer transitions 22/273 dead transitions. [2024-06-27 18:28:45,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 273 transitions, 2858 flow [2024-06-27 18:28:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:28:45,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-06-27 18:28:45,760 INFO L175 Difference]: Start difference. First operand has 224 places, 226 transitions, 2083 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:28:45,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 273 transitions, 2858 flow [2024-06-27 18:28:46,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 273 transitions, 2753 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:46,081 INFO L231 Difference]: Finished difference. Result has 225 places, 207 transitions, 1895 flow [2024-06-27 18:28:46,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1895, PETRI_PLACES=225, PETRI_TRANSITIONS=207} [2024-06-27 18:28:46,083 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 182 predicate places. [2024-06-27 18:28:46,083 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 207 transitions, 1895 flow [2024-06-27 18:28:46,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:46,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:46,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:46,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:28:46,084 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:46,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1045276213, now seen corresponding path program 2 times [2024-06-27 18:28:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:46,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535692332] [2024-06-27 18:28:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:46,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:46,803 INFO 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 18:28:46,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:46,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535692332] [2024-06-27 18:28:46,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535692332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:46,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:46,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:46,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286228900] [2024-06-27 18:28:46,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:46,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:46,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:46,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:46,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:46,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:46,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 207 transitions, 1895 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:46,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:46,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:46,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:47,407 INFO L124 PetriNetUnfolderBase]: 1463/2555 cut-off events. [2024-06-27 18:28:47,407 INFO L125 PetriNetUnfolderBase]: For 85375/85375 co-relation queries the response was YES. [2024-06-27 18:28:47,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14251 conditions, 2555 events. 1463/2555 cut-off events. For 85375/85375 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14721 event pairs, 251 based on Foata normal form. 1/2540 useless extension candidates. Maximal degree in co-relation 14141. Up to 1801 conditions per place. [2024-06-27 18:28:47,426 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 170 selfloop transitions, 77 changer transitions 0/255 dead transitions. [2024-06-27 18:28:47,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 255 transitions, 2929 flow [2024-06-27 18:28:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:28:47,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-27 18:28:47,428 INFO L175 Difference]: Start difference. First operand has 225 places, 207 transitions, 1895 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:28:47,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 255 transitions, 2929 flow [2024-06-27 18:28:47,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 255 transitions, 2847 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:47,748 INFO L231 Difference]: Finished difference. Result has 226 places, 213 transitions, 2063 flow [2024-06-27 18:28:47,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2063, PETRI_PLACES=226, PETRI_TRANSITIONS=213} [2024-06-27 18:28:47,749 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 183 predicate places. [2024-06-27 18:28:47,749 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 213 transitions, 2063 flow [2024-06-27 18:28:47,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:47,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:47,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:47,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:28:47,749 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:47,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:47,749 INFO L85 PathProgramCache]: Analyzing trace with hash -414733336, now seen corresponding path program 1 times [2024-06-27 18:28:47,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:47,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536719513] [2024-06-27 18:28:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:47,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:48,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:48,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536719513] [2024-06-27 18:28:48,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536719513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:48,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:48,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:48,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598000582] [2024-06-27 18:28:48,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:48,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:48,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:48,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:48,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:48,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:48,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 213 transitions, 2063 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:48,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:48,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:48,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:49,117 INFO L124 PetriNetUnfolderBase]: 1525/2697 cut-off events. [2024-06-27 18:28:49,117 INFO L125 PetriNetUnfolderBase]: For 96887/96887 co-relation queries the response was YES. [2024-06-27 18:28:49,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15142 conditions, 2697 events. 1525/2697 cut-off events. For 96887/96887 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 16113 event pairs, 233 based on Foata normal form. 3/2686 useless extension candidates. Maximal degree in co-relation 15031. Up to 1296 conditions per place. [2024-06-27 18:28:49,136 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 182 selfloop transitions, 83 changer transitions 0/273 dead transitions. [2024-06-27 18:28:49,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 273 transitions, 3023 flow [2024-06-27 18:28:49,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 18:28:49,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2024-06-27 18:28:49,137 INFO L175 Difference]: Start difference. First operand has 226 places, 213 transitions, 2063 flow. Second operand 10 states and 196 transitions. [2024-06-27 18:28:49,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 273 transitions, 3023 flow [2024-06-27 18:28:49,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 273 transitions, 2923 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:49,468 INFO L231 Difference]: Finished difference. Result has 231 places, 217 transitions, 2174 flow [2024-06-27 18:28:49,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2174, PETRI_PLACES=231, PETRI_TRANSITIONS=217} [2024-06-27 18:28:49,469 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 188 predicate places. [2024-06-27 18:28:49,469 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 217 transitions, 2174 flow [2024-06-27 18:28:49,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:49,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:49,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:49,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:28:49,469 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:49,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:49,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1668406134, now seen corresponding path program 4 times [2024-06-27 18:28:49,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:49,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240271437] [2024-06-27 18:28:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:49,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:50,279 INFO 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 18:28:50,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240271437] [2024-06-27 18:28:50,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240271437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:50,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:50,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:50,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681530817] [2024-06-27 18:28:50,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:50,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:50,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:50,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:50,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:50,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:50,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 217 transitions, 2174 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 18:28:50,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:50,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:50,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:50,933 INFO L124 PetriNetUnfolderBase]: 1463/2621 cut-off events. [2024-06-27 18:28:50,933 INFO L125 PetriNetUnfolderBase]: For 96322/96323 co-relation queries the response was YES. [2024-06-27 18:28:50,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15322 conditions, 2621 events. 1463/2621 cut-off events. For 96322/96323 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15771 event pairs, 266 based on Foata normal form. 2/2605 useless extension candidates. Maximal degree in co-relation 15209. Up to 1969 conditions per place. [2024-06-27 18:28:50,951 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 173 selfloop transitions, 52 changer transitions 0/259 dead transitions. [2024-06-27 18:28:50,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 259 transitions, 2851 flow [2024-06-27 18:28:50,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:50,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:28:50,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-27 18:28:50,952 INFO L175 Difference]: Start difference. First operand has 231 places, 217 transitions, 2174 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:28:50,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 259 transitions, 2851 flow [2024-06-27 18:28:51,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 259 transitions, 2751 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:51,332 INFO L231 Difference]: Finished difference. Result has 235 places, 219 transitions, 2213 flow [2024-06-27 18:28:51,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2213, PETRI_PLACES=235, PETRI_TRANSITIONS=219} [2024-06-27 18:28:51,333 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 192 predicate places. [2024-06-27 18:28:51,333 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 219 transitions, 2213 flow [2024-06-27 18:28:51,333 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 18:28:51,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:51,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:51,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:28:51,333 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:51,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:51,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1668406289, now seen corresponding path program 3 times [2024-06-27 18:28:51,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:51,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989168894] [2024-06-27 18:28:51,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:51,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:52,005 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 18:28:52,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:52,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989168894] [2024-06-27 18:28:52,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989168894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:52,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:52,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:52,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119353277] [2024-06-27 18:28:52,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:52,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:52,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:52,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:52,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:52,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:52,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 219 transitions, 2213 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:52,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:52,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:52,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:52,621 INFO L124 PetriNetUnfolderBase]: 1532/2675 cut-off events. [2024-06-27 18:28:52,621 INFO L125 PetriNetUnfolderBase]: For 96602/96602 co-relation queries the response was YES. [2024-06-27 18:28:52,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15803 conditions, 2675 events. 1532/2675 cut-off events. For 96602/96602 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15570 event pairs, 267 based on Foata normal form. 1/2659 useless extension candidates. Maximal degree in co-relation 15688. Up to 1909 conditions per place. [2024-06-27 18:28:52,643 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 177 selfloop transitions, 75 changer transitions 0/260 dead transitions. [2024-06-27 18:28:52,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 260 transitions, 3050 flow [2024-06-27 18:28:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:28:52,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-27 18:28:52,645 INFO L175 Difference]: Start difference. First operand has 235 places, 219 transitions, 2213 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:28:52,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 260 transitions, 3050 flow [2024-06-27 18:28:53,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 260 transitions, 2921 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:53,030 INFO L231 Difference]: Finished difference. Result has 237 places, 219 transitions, 2239 flow [2024-06-27 18:28:53,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2239, PETRI_PLACES=237, PETRI_TRANSITIONS=219} [2024-06-27 18:28:53,031 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 194 predicate places. [2024-06-27 18:28:53,031 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 219 transitions, 2239 flow [2024-06-27 18:28:53,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:53,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:53,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:53,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:28:53,031 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:53,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:53,031 INFO L85 PathProgramCache]: Analyzing trace with hash -270842806, now seen corresponding path program 2 times [2024-06-27 18:28:53,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:53,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888337497] [2024-06-27 18:28:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:53,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:53,686 INFO 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 18:28:53,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:53,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888337497] [2024-06-27 18:28:53,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888337497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:53,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:53,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:53,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373456231] [2024-06-27 18:28:53,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:53,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:53,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:53,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:53,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:53,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:53,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 219 transitions, 2239 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:53,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:53,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:53,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:54,325 INFO L124 PetriNetUnfolderBase]: 1604/2845 cut-off events. [2024-06-27 18:28:54,326 INFO L125 PetriNetUnfolderBase]: For 110805/110805 co-relation queries the response was YES. [2024-06-27 18:28:54,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16699 conditions, 2845 events. 1604/2845 cut-off events. For 110805/110805 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 17239 event pairs, 256 based on Foata normal form. 3/2831 useless extension candidates. Maximal degree in co-relation 16583. Up to 1359 conditions per place. [2024-06-27 18:28:54,350 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 198 selfloop transitions, 72 changer transitions 0/278 dead transitions. [2024-06-27 18:28:54,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 278 transitions, 3338 flow [2024-06-27 18:28:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-27 18:28:54,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-27 18:28:54,351 INFO L175 Difference]: Start difference. First operand has 237 places, 219 transitions, 2239 flow. Second operand 10 states and 200 transitions. [2024-06-27 18:28:54,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 278 transitions, 3338 flow [2024-06-27 18:28:54,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 278 transitions, 3175 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:54,770 INFO L231 Difference]: Finished difference. Result has 238 places, 223 transitions, 2261 flow [2024-06-27 18:28:54,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2261, PETRI_PLACES=238, PETRI_TRANSITIONS=223} [2024-06-27 18:28:54,771 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 195 predicate places. [2024-06-27 18:28:54,771 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 223 transitions, 2261 flow [2024-06-27 18:28:54,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:54,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:54,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:54,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:28:54,771 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:54,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:54,772 INFO L85 PathProgramCache]: Analyzing trace with hash -270843023, now seen corresponding path program 4 times [2024-06-27 18:28:54,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:54,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768339960] [2024-06-27 18:28:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:54,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:55,471 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 18:28:55,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:55,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768339960] [2024-06-27 18:28:55,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768339960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:55,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:55,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:55,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503439506] [2024-06-27 18:28:55,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:55,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:55,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:55,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:55,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:55,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:55,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 223 transitions, 2261 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:55,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:55,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:55,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:56,086 INFO L124 PetriNetUnfolderBase]: 1635/2860 cut-off events. [2024-06-27 18:28:56,086 INFO L125 PetriNetUnfolderBase]: For 114834/114834 co-relation queries the response was YES. [2024-06-27 18:28:56,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17285 conditions, 2860 events. 1635/2860 cut-off events. For 114834/114834 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16940 event pairs, 298 based on Foata normal form. 1/2841 useless extension candidates. Maximal degree in co-relation 17168. Up to 2054 conditions per place. [2024-06-27 18:28:56,110 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 184 selfloop transitions, 75 changer transitions 0/267 dead transitions. [2024-06-27 18:28:56,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 267 transitions, 3446 flow [2024-06-27 18:28:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:28:56,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 18:28:56,111 INFO L175 Difference]: Start difference. First operand has 238 places, 223 transitions, 2261 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:28:56,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 267 transitions, 3446 flow [2024-06-27 18:28:56,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 267 transitions, 3341 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:56,476 INFO L231 Difference]: Finished difference. Result has 242 places, 229 transitions, 2392 flow [2024-06-27 18:28:56,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2392, PETRI_PLACES=242, PETRI_TRANSITIONS=229} [2024-06-27 18:28:56,477 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 199 predicate places. [2024-06-27 18:28:56,477 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 229 transitions, 2392 flow [2024-06-27 18:28:56,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:56,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:56,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:56,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:28:56,478 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:56,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:56,478 INFO L85 PathProgramCache]: Analyzing trace with hash -270641213, now seen corresponding path program 5 times [2024-06-27 18:28:56,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:56,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480530413] [2024-06-27 18:28:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:56,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:57,222 INFO 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 18:28:57,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:57,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480530413] [2024-06-27 18:28:57,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480530413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:57,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:57,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:57,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682988641] [2024-06-27 18:28:57,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:57,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:57,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:57,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:57,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:57,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:28:57,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 229 transitions, 2392 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:57,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:57,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:28:57,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:57,880 INFO L124 PetriNetUnfolderBase]: 1633/2850 cut-off events. [2024-06-27 18:28:57,880 INFO L125 PetriNetUnfolderBase]: For 115411/115411 co-relation queries the response was YES. [2024-06-27 18:28:57,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17157 conditions, 2850 events. 1633/2850 cut-off events. For 115411/115411 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16861 event pairs, 308 based on Foata normal form. 1/2831 useless extension candidates. Maximal degree in co-relation 17039. Up to 2052 conditions per place. [2024-06-27 18:28:57,903 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 179 selfloop transitions, 79 changer transitions 0/266 dead transitions. [2024-06-27 18:28:57,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 266 transitions, 3362 flow [2024-06-27 18:28:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:28:57,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:28:57,904 INFO L175 Difference]: Start difference. First operand has 242 places, 229 transitions, 2392 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:28:57,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 266 transitions, 3362 flow [2024-06-27 18:28:58,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 266 transitions, 3235 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:58,261 INFO L231 Difference]: Finished difference. Result has 247 places, 229 transitions, 2428 flow [2024-06-27 18:28:58,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2428, PETRI_PLACES=247, PETRI_TRANSITIONS=229} [2024-06-27 18:28:58,261 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 204 predicate places. [2024-06-27 18:28:58,261 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 229 transitions, 2428 flow [2024-06-27 18:28:58,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:28:58,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:58,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:58,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:28:58,262 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:58,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:58,263 INFO L85 PathProgramCache]: Analyzing trace with hash 379908474, now seen corresponding path program 5 times [2024-06-27 18:28:58,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:58,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848435059] [2024-06-27 18:28:58,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:58,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:59,212 INFO 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 18:28:59,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:59,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848435059] [2024-06-27 18:28:59,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848435059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:59,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:59,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:59,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890109421] [2024-06-27 18:28:59,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:59,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:59,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:59,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:59,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:59,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:59,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 229 transitions, 2428 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 18:28:59,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:59,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:59,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:59,862 INFO L124 PetriNetUnfolderBase]: 1571/2777 cut-off events. [2024-06-27 18:28:59,862 INFO L125 PetriNetUnfolderBase]: For 118601/118601 co-relation queries the response was YES. [2024-06-27 18:28:59,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16789 conditions, 2777 events. 1571/2777 cut-off events. For 118601/118601 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16742 event pairs, 304 based on Foata normal form. 1/2757 useless extension candidates. Maximal degree in co-relation 16670. Up to 2118 conditions per place. [2024-06-27 18:28:59,887 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 178 selfloop transitions, 51 changer transitions 0/266 dead transitions. [2024-06-27 18:28:59,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 266 transitions, 3094 flow [2024-06-27 18:28:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:28:59,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-27 18:28:59,888 INFO L175 Difference]: Start difference. First operand has 247 places, 229 transitions, 2428 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:28:59,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 266 transitions, 3094 flow [2024-06-27 18:29:00,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 266 transitions, 2927 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:00,215 INFO L231 Difference]: Finished difference. Result has 248 places, 231 transitions, 2402 flow [2024-06-27 18:29:00,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2402, PETRI_PLACES=248, PETRI_TRANSITIONS=231} [2024-06-27 18:29:00,216 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 205 predicate places. [2024-06-27 18:29:00,216 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 231 transitions, 2402 flow [2024-06-27 18:29:00,216 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 18:29:00,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:00,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:00,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:29:00,216 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:00,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash -270633556, now seen corresponding path program 3 times [2024-06-27 18:29:00,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:00,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249838943] [2024-06-27 18:29:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:00,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:00,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:00,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249838943] [2024-06-27 18:29:00,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249838943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:00,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:00,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:00,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096397105] [2024-06-27 18:29:00,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:00,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:00,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:00,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:00,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:00,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:00,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 231 transitions, 2402 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:00,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:00,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:00,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:01,579 INFO L124 PetriNetUnfolderBase]: 1675/2942 cut-off events. [2024-06-27 18:29:01,580 INFO L125 PetriNetUnfolderBase]: For 127188/127188 co-relation queries the response was YES. [2024-06-27 18:29:01,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17523 conditions, 2942 events. 1675/2942 cut-off events. For 127188/127188 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17849 event pairs, 250 based on Foata normal form. 3/2928 useless extension candidates. Maximal degree in co-relation 17403. Up to 1442 conditions per place. [2024-06-27 18:29:01,605 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 200 selfloop transitions, 77 changer transitions 0/285 dead transitions. [2024-06-27 18:29:01,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 285 transitions, 3501 flow [2024-06-27 18:29:01,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:01,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:01,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 18:29:01,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:29:01,606 INFO L175 Difference]: Start difference. First operand has 248 places, 231 transitions, 2402 flow. Second operand 10 states and 195 transitions. [2024-06-27 18:29:01,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 285 transitions, 3501 flow [2024-06-27 18:29:01,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 285 transitions, 3376 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:01,999 INFO L231 Difference]: Finished difference. Result has 250 places, 233 transitions, 2454 flow [2024-06-27 18:29:01,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2454, PETRI_PLACES=250, PETRI_TRANSITIONS=233} [2024-06-27 18:29:02,000 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 207 predicate places. [2024-06-27 18:29:02,000 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 233 transitions, 2454 flow [2024-06-27 18:29:02,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:02,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:02,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:02,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:29:02,000 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:02,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1050633013, now seen corresponding path program 6 times [2024-06-27 18:29:02,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:02,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011829164] [2024-06-27 18:29:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:02,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:02,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:02,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011829164] [2024-06-27 18:29:02,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011829164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:02,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:02,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:02,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803705380] [2024-06-27 18:29:02,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:02,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:02,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:02,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:02,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:02,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:02,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 233 transitions, 2454 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:02,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:02,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:02,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:03,403 INFO L124 PetriNetUnfolderBase]: 1673/2919 cut-off events. [2024-06-27 18:29:03,403 INFO L125 PetriNetUnfolderBase]: For 123627/123627 co-relation queries the response was YES. [2024-06-27 18:29:03,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17721 conditions, 2919 events. 1673/2919 cut-off events. For 123627/123627 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 17389 event pairs, 313 based on Foata normal form. 1/2899 useless extension candidates. Maximal degree in co-relation 17600. Up to 2115 conditions per place. [2024-06-27 18:29:03,427 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 185 selfloop transitions, 76 changer transitions 0/269 dead transitions. [2024-06-27 18:29:03,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 269 transitions, 3298 flow [2024-06-27 18:29:03,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:03,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:29:03,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:29:03,428 INFO L175 Difference]: Start difference. First operand has 250 places, 233 transitions, 2454 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:29:03,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 269 transitions, 3298 flow [2024-06-27 18:29:03,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 269 transitions, 3137 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:03,814 INFO L231 Difference]: Finished difference. Result has 253 places, 233 transitions, 2450 flow [2024-06-27 18:29:03,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2450, PETRI_PLACES=253, PETRI_TRANSITIONS=233} [2024-06-27 18:29:03,815 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 210 predicate places. [2024-06-27 18:29:03,815 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 233 transitions, 2450 flow [2024-06-27 18:29:03,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:03,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:03,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:03,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:29:03,815 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:03,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash 380116236, now seen corresponding path program 4 times [2024-06-27 18:29:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:03,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888610437] [2024-06-27 18:29:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:03,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:04,485 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 18:29:04,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:04,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888610437] [2024-06-27 18:29:04,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888610437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:04,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:04,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:04,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220436270] [2024-06-27 18:29:04,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:04,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:04,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:04,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:04,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:04,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:04,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 233 transitions, 2450 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:04,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:04,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:04,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:05,163 INFO L124 PetriNetUnfolderBase]: 1667/2939 cut-off events. [2024-06-27 18:29:05,163 INFO L125 PetriNetUnfolderBase]: For 123605/123605 co-relation queries the response was YES. [2024-06-27 18:29:05,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17314 conditions, 2939 events. 1667/2939 cut-off events. For 123605/123605 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17875 event pairs, 248 based on Foata normal form. 3/2925 useless extension candidates. Maximal degree in co-relation 17192. Up to 1435 conditions per place. [2024-06-27 18:29:05,189 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 204 selfloop transitions, 75 changer transitions 0/287 dead transitions. [2024-06-27 18:29:05,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 287 transitions, 3409 flow [2024-06-27 18:29:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-27 18:29:05,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2024-06-27 18:29:05,190 INFO L175 Difference]: Start difference. First operand has 253 places, 233 transitions, 2450 flow. Second operand 10 states and 198 transitions. [2024-06-27 18:29:05,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 287 transitions, 3409 flow [2024-06-27 18:29:05,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 287 transitions, 3248 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:05,618 INFO L231 Difference]: Finished difference. Result has 254 places, 233 transitions, 2444 flow [2024-06-27 18:29:05,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2444, PETRI_PLACES=254, PETRI_TRANSITIONS=233} [2024-06-27 18:29:05,619 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-27 18:29:05,619 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 233 transitions, 2444 flow [2024-06-27 18:29:05,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:05,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:05,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:05,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:29:05,619 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:05,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:05,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1432335313, now seen corresponding path program 7 times [2024-06-27 18:29:05,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:05,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182859209] [2024-06-27 18:29:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:05,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:06,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:06,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182859209] [2024-06-27 18:29:06,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182859209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:06,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:06,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:06,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072778013] [2024-06-27 18:29:06,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:06,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:06,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:06,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:06,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:06,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:06,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 233 transitions, 2444 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:06,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:06,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:06,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:06,941 INFO L124 PetriNetUnfolderBase]: 1698/2956 cut-off events. [2024-06-27 18:29:06,942 INFO L125 PetriNetUnfolderBase]: For 127604/127604 co-relation queries the response was YES. [2024-06-27 18:29:06,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17951 conditions, 2956 events. 1698/2956 cut-off events. For 127604/127604 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 17595 event pairs, 315 based on Foata normal form. 1/2936 useless extension candidates. Maximal degree in co-relation 17828. Up to 2140 conditions per place. [2024-06-27 18:29:06,968 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 189 selfloop transitions, 78 changer transitions 0/275 dead transitions. [2024-06-27 18:29:06,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 275 transitions, 3681 flow [2024-06-27 18:29:06,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:06,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:06,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:29:06,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-27 18:29:06,969 INFO L175 Difference]: Start difference. First operand has 254 places, 233 transitions, 2444 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:29:06,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 275 transitions, 3681 flow [2024-06-27 18:29:07,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 275 transitions, 3512 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:29:07,407 INFO L231 Difference]: Finished difference. Result has 254 places, 239 transitions, 2523 flow [2024-06-27 18:29:07,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2523, PETRI_PLACES=254, PETRI_TRANSITIONS=239} [2024-06-27 18:29:07,408 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-27 18:29:07,408 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 239 transitions, 2523 flow [2024-06-27 18:29:07,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:07,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:07,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:07,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:29:07,409 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:07,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:07,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1439485370, now seen corresponding path program 5 times [2024-06-27 18:29:07,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:07,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483200461] [2024-06-27 18:29:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:07,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:08,086 INFO 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 18:29:08,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483200461] [2024-06-27 18:29:08,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483200461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:08,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:08,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:08,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863501595] [2024-06-27 18:29:08,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:08,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:08,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:08,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:08,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 239 transitions, 2523 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:08,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:08,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:08,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:08,805 INFO L124 PetriNetUnfolderBase]: 1809/3120 cut-off events. [2024-06-27 18:29:08,806 INFO L125 PetriNetUnfolderBase]: For 152706/152706 co-relation queries the response was YES. [2024-06-27 18:29:08,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18989 conditions, 3120 events. 1809/3120 cut-off events. For 152706/152706 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18842 event pairs, 339 based on Foata normal form. 3/3095 useless extension candidates. Maximal degree in co-relation 18865. Up to 1563 conditions per place. [2024-06-27 18:29:08,833 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 213 selfloop transitions, 78 changer transitions 0/299 dead transitions. [2024-06-27 18:29:08,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 299 transitions, 3864 flow [2024-06-27 18:29:08,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:08,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-27 18:29:08,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2024-06-27 18:29:08,834 INFO L175 Difference]: Start difference. First operand has 254 places, 239 transitions, 2523 flow. Second operand 10 states and 198 transitions. [2024-06-27 18:29:08,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 299 transitions, 3864 flow [2024-06-27 18:29:09,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 299 transitions, 3739 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:09,284 INFO L231 Difference]: Finished difference. Result has 259 places, 245 transitions, 2619 flow [2024-06-27 18:29:09,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2398, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2619, PETRI_PLACES=259, PETRI_TRANSITIONS=245} [2024-06-27 18:29:09,285 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 216 predicate places. [2024-06-27 18:29:09,285 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 245 transitions, 2619 flow [2024-06-27 18:29:09,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:09,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:09,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:09,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:29:09,285 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:09,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:09,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1439752280, now seen corresponding path program 6 times [2024-06-27 18:29:09,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:09,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587999031] [2024-06-27 18:29:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:09,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:09,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:09,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587999031] [2024-06-27 18:29:09,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587999031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:09,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:09,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130170769] [2024-06-27 18:29:09,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:09,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:09,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:09,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:09,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:10,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:10,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 245 transitions, 2619 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:10,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:10,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:10,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:10,649 INFO L124 PetriNetUnfolderBase]: 1842/3175 cut-off events. [2024-06-27 18:29:10,649 INFO L125 PetriNetUnfolderBase]: For 157720/157720 co-relation queries the response was YES. [2024-06-27 18:29:10,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19491 conditions, 3175 events. 1842/3175 cut-off events. For 157720/157720 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19259 event pairs, 343 based on Foata normal form. 3/3150 useless extension candidates. Maximal degree in co-relation 19366. Up to 1587 conditions per place. [2024-06-27 18:29:10,677 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 203 selfloop transitions, 86 changer transitions 0/297 dead transitions. [2024-06-27 18:29:10,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 297 transitions, 3762 flow [2024-06-27 18:29:10,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:29:10,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 18:29:10,678 INFO L175 Difference]: Start difference. First operand has 259 places, 245 transitions, 2619 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:29:10,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 297 transitions, 3762 flow [2024-06-27 18:29:11,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 297 transitions, 3649 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:11,175 INFO L231 Difference]: Finished difference. Result has 264 places, 247 transitions, 2707 flow [2024-06-27 18:29:11,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2512, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2707, PETRI_PLACES=264, PETRI_TRANSITIONS=247} [2024-06-27 18:29:11,176 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 221 predicate places. [2024-06-27 18:29:11,176 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 247 transitions, 2707 flow [2024-06-27 18:29:11,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:11,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:11,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:11,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:29:11,176 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:11,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1439492810, now seen corresponding path program 7 times [2024-06-27 18:29:11,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:11,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019888884] [2024-06-27 18:29:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:11,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:11,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:11,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019888884] [2024-06-27 18:29:11,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019888884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:11,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:11,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:11,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946558751] [2024-06-27 18:29:11,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:11,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:11,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:11,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:11,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:11,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:11,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 247 transitions, 2707 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:11,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:11,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:11,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:12,564 INFO L124 PetriNetUnfolderBase]: 1836/3188 cut-off events. [2024-06-27 18:29:12,564 INFO L125 PetriNetUnfolderBase]: For 153867/153867 co-relation queries the response was YES. [2024-06-27 18:29:12,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19259 conditions, 3188 events. 1836/3188 cut-off events. For 153867/153867 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19486 event pairs, 316 based on Foata normal form. 3/3164 useless extension candidates. Maximal degree in co-relation 19133. Up to 1583 conditions per place. [2024-06-27 18:29:12,592 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 213 selfloop transitions, 79 changer transitions 0/300 dead transitions. [2024-06-27 18:29:12,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 300 transitions, 3848 flow [2024-06-27 18:29:12,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:12,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-27 18:29:12,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2024-06-27 18:29:12,593 INFO L175 Difference]: Start difference. First operand has 264 places, 247 transitions, 2707 flow. Second operand 10 states and 198 transitions. [2024-06-27 18:29:12,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 300 transitions, 3848 flow [2024-06-27 18:29:13,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 300 transitions, 3694 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:13,181 INFO L231 Difference]: Finished difference. Result has 267 places, 247 transitions, 2716 flow [2024-06-27 18:29:13,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2716, PETRI_PLACES=267, PETRI_TRANSITIONS=247} [2024-06-27 18:29:13,182 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 224 predicate places. [2024-06-27 18:29:13,182 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 247 transitions, 2716 flow [2024-06-27 18:29:13,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:13,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:13,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:13,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:29:13,182 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:13,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:13,183 INFO L85 PathProgramCache]: Analyzing trace with hash 788727921, now seen corresponding path program 8 times [2024-06-27 18:29:13,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:13,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63842910] [2024-06-27 18:29:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:13,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:13,851 INFO 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 18:29:13,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:13,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63842910] [2024-06-27 18:29:13,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63842910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:13,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:13,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:13,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200701218] [2024-06-27 18:29:13,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:13,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:13,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:13,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:13,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:13,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:13,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 247 transitions, 2716 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:13,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:13,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:13,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:14,666 INFO L124 PetriNetUnfolderBase]: 1834/3162 cut-off events. [2024-06-27 18:29:14,666 INFO L125 PetriNetUnfolderBase]: For 149022/149022 co-relation queries the response was YES. [2024-06-27 18:29:14,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19167 conditions, 3162 events. 1834/3162 cut-off events. For 149022/149022 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 18961 event pairs, 356 based on Foata normal form. 1/3139 useless extension candidates. Maximal degree in co-relation 19040. Up to 2351 conditions per place. [2024-06-27 18:29:14,692 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 189 selfloop transitions, 85 changer transitions 0/282 dead transitions. [2024-06-27 18:29:14,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 282 transitions, 3748 flow [2024-06-27 18:29:14,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 18:29:14,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 18:29:14,693 INFO L175 Difference]: Start difference. First operand has 267 places, 247 transitions, 2716 flow. Second operand 10 states and 180 transitions. [2024-06-27 18:29:14,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 282 transitions, 3748 flow [2024-06-27 18:29:15,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 282 transitions, 3574 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:15,342 INFO L231 Difference]: Finished difference. Result has 268 places, 247 transitions, 2717 flow [2024-06-27 18:29:15,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2542, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2717, PETRI_PLACES=268, PETRI_TRANSITIONS=247} [2024-06-27 18:29:15,343 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 225 predicate places. [2024-06-27 18:29:15,343 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 247 transitions, 2717 flow [2024-06-27 18:29:15,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:15,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:15,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:15,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:29:15,343 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:15,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:15,343 INFO L85 PathProgramCache]: Analyzing trace with hash 781585738, now seen corresponding path program 8 times [2024-06-27 18:29:15,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:15,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912656030] [2024-06-27 18:29:15,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:15,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:15,992 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 18:29:15,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:15,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912656030] [2024-06-27 18:29:15,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912656030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:15,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:15,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:15,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446045663] [2024-06-27 18:29:15,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:15,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:15,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:15,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:16,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:16,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 247 transitions, 2717 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:16,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:16,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:16,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:16,727 INFO L124 PetriNetUnfolderBase]: 1867/3264 cut-off events. [2024-06-27 18:29:16,727 INFO L125 PetriNetUnfolderBase]: For 158375/158375 co-relation queries the response was YES. [2024-06-27 18:29:16,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19272 conditions, 3264 events. 1867/3264 cut-off events. For 158375/158375 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 20167 event pairs, 349 based on Foata normal form. 3/3245 useless extension candidates. Maximal degree in co-relation 19144. Up to 1604 conditions per place. [2024-06-27 18:29:16,757 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 215 selfloop transitions, 79 changer transitions 0/302 dead transitions. [2024-06-27 18:29:16,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 302 transitions, 3888 flow [2024-06-27 18:29:16,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-27 18:29:16,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102564102564102 [2024-06-27 18:29:16,759 INFO L175 Difference]: Start difference. First operand has 268 places, 247 transitions, 2717 flow. Second operand 10 states and 199 transitions. [2024-06-27 18:29:16,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 302 transitions, 3888 flow [2024-06-27 18:29:17,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 302 transitions, 3707 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:17,436 INFO L231 Difference]: Finished difference. Result has 269 places, 249 transitions, 2717 flow [2024-06-27 18:29:17,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2536, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2717, PETRI_PLACES=269, PETRI_TRANSITIONS=249} [2024-06-27 18:29:17,436 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-27 18:29:17,437 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 249 transitions, 2717 flow [2024-06-27 18:29:17,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:17,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:17,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:17,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:29:17,437 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:17,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash 781578298, now seen corresponding path program 9 times [2024-06-27 18:29:17,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:17,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090379408] [2024-06-27 18:29:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:18,150 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 18:29:18,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:18,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090379408] [2024-06-27 18:29:18,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090379408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:18,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:18,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:18,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673740499] [2024-06-27 18:29:18,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:18,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:18,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:18,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:18,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:18,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:18,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 249 transitions, 2717 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:18,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:18,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:18,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:18,967 INFO L124 PetriNetUnfolderBase]: 1900/3337 cut-off events. [2024-06-27 18:29:18,967 INFO L125 PetriNetUnfolderBase]: For 163437/163437 co-relation queries the response was YES. [2024-06-27 18:29:18,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19721 conditions, 3337 events. 1900/3337 cut-off events. For 163437/163437 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 20771 event pairs, 354 based on Foata normal form. 3/3317 useless extension candidates. Maximal degree in co-relation 19592. Up to 1628 conditions per place. [2024-06-27 18:29:18,998 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 219 selfloop transitions, 80 changer transitions 0/307 dead transitions. [2024-06-27 18:29:18,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 307 transitions, 3918 flow [2024-06-27 18:29:18,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:18,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:18,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-27 18:29:18,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205128205128206 [2024-06-27 18:29:18,999 INFO L175 Difference]: Start difference. First operand has 269 places, 249 transitions, 2717 flow. Second operand 10 states and 203 transitions. [2024-06-27 18:29:18,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 307 transitions, 3918 flow [2024-06-27 18:29:19,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 307 transitions, 3701 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:19,641 INFO L231 Difference]: Finished difference. Result has 270 places, 251 transitions, 2687 flow [2024-06-27 18:29:19,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2506, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2687, PETRI_PLACES=270, PETRI_TRANSITIONS=251} [2024-06-27 18:29:19,642 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 227 predicate places. [2024-06-27 18:29:19,642 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 251 transitions, 2687 flow [2024-06-27 18:29:19,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:19,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:19,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:19,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:29:19,642 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:19,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:19,643 INFO L85 PathProgramCache]: Analyzing trace with hash 781376271, now seen corresponding path program 9 times [2024-06-27 18:29:19,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:19,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076720617] [2024-06-27 18:29:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:19,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:20,309 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 18:29:20,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:20,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076720617] [2024-06-27 18:29:20,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076720617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:20,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:20,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:20,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924251020] [2024-06-27 18:29:20,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:20,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:20,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:20,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:20,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:20,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:20,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 251 transitions, 2687 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:20,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:20,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:20,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:21,080 INFO L124 PetriNetUnfolderBase]: 1909/3294 cut-off events. [2024-06-27 18:29:21,080 INFO L125 PetriNetUnfolderBase]: For 159284/159284 co-relation queries the response was YES. [2024-06-27 18:29:21,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19747 conditions, 3294 events. 1909/3294 cut-off events. For 159284/159284 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 19970 event pairs, 368 based on Foata normal form. 1/3269 useless extension candidates. Maximal degree in co-relation 19617. Up to 2463 conditions per place. [2024-06-27 18:29:21,111 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 199 selfloop transitions, 81 changer transitions 0/288 dead transitions. [2024-06-27 18:29:21,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 288 transitions, 3770 flow [2024-06-27 18:29:21,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:21,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:29:21,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:29:21,113 INFO L175 Difference]: Start difference. First operand has 270 places, 251 transitions, 2687 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:29:21,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 288 transitions, 3770 flow [2024-06-27 18:29:21,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 288 transitions, 3617 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:21,705 INFO L231 Difference]: Finished difference. Result has 273 places, 253 transitions, 2728 flow [2024-06-27 18:29:21,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2728, PETRI_PLACES=273, PETRI_TRANSITIONS=253} [2024-06-27 18:29:21,706 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 230 predicate places. [2024-06-27 18:29:21,706 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 253 transitions, 2728 flow [2024-06-27 18:29:21,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:21,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:21,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:21,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:29:21,706 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:21,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1244572423, now seen corresponding path program 10 times [2024-06-27 18:29:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:21,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978324366] [2024-06-27 18:29:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:21,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:22,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:22,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978324366] [2024-06-27 18:29:22,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978324366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:22,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:22,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:22,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285011561] [2024-06-27 18:29:22,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:22,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:22,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:22,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:22,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:22,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 253 transitions, 2728 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:22,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:22,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:22,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:23,129 INFO L124 PetriNetUnfolderBase]: 1907/3299 cut-off events. [2024-06-27 18:29:23,129 INFO L125 PetriNetUnfolderBase]: For 159260/159260 co-relation queries the response was YES. [2024-06-27 18:29:23,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19515 conditions, 3299 events. 1907/3299 cut-off events. For 159260/159260 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 20058 event pairs, 384 based on Foata normal form. 1/3275 useless extension candidates. Maximal degree in co-relation 19384. Up to 2461 conditions per place. [2024-06-27 18:29:23,158 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 196 selfloop transitions, 83 changer transitions 0/287 dead transitions. [2024-06-27 18:29:23,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 287 transitions, 3622 flow [2024-06-27 18:29:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 18:29:23,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 18:29:23,159 INFO L175 Difference]: Start difference. First operand has 273 places, 253 transitions, 2728 flow. Second operand 10 states and 180 transitions. [2024-06-27 18:29:23,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 287 transitions, 3622 flow [2024-06-27 18:29:23,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 287 transitions, 3437 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:23,891 INFO L231 Difference]: Finished difference. Result has 275 places, 253 transitions, 2714 flow [2024-06-27 18:29:23,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2714, PETRI_PLACES=275, PETRI_TRANSITIONS=253} [2024-06-27 18:29:23,892 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 232 predicate places. [2024-06-27 18:29:23,892 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 253 transitions, 2714 flow [2024-06-27 18:29:23,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:23,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:23,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:23,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:29:23,892 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:23,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:23,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1432127768, now seen corresponding path program 6 times [2024-06-27 18:29:23,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:23,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215416349] [2024-06-27 18:29:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:23,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:24,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:24,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215416349] [2024-06-27 18:29:24,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215416349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:24,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:24,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:24,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242038232] [2024-06-27 18:29:24,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:24,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:24,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:24,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:24,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:24,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:24,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 253 transitions, 2714 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 18:29:24,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:24,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:24,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:25,638 INFO L124 PetriNetUnfolderBase]: 1827/3201 cut-off events. [2024-06-27 18:29:25,638 INFO L125 PetriNetUnfolderBase]: For 163046/163046 co-relation queries the response was YES. [2024-06-27 18:29:25,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19005 conditions, 3201 events. 1827/3201 cut-off events. For 163046/163046 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19752 event pairs, 346 based on Foata normal form. 1/3175 useless extension candidates. Maximal degree in co-relation 18873. Up to 2505 conditions per place. [2024-06-27 18:29:25,665 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 197 selfloop transitions, 50 changer transitions 0/288 dead transitions. [2024-06-27 18:29:25,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 288 transitions, 3414 flow [2024-06-27 18:29:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:25,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:25,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:29:25,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:29:25,666 INFO L175 Difference]: Start difference. First operand has 275 places, 253 transitions, 2714 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:29:25,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 288 transitions, 3414 flow [2024-06-27 18:29:26,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 288 transitions, 3243 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:26,420 INFO L231 Difference]: Finished difference. Result has 276 places, 255 transitions, 2686 flow [2024-06-27 18:29:26,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2686, PETRI_PLACES=276, PETRI_TRANSITIONS=255} [2024-06-27 18:29:26,421 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 233 predicate places. [2024-06-27 18:29:26,421 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 255 transitions, 2686 flow [2024-06-27 18:29:26,421 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 18:29:26,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:26,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:26,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:29:26,422 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:26,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1432133720, now seen corresponding path program 10 times [2024-06-27 18:29:26,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:26,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886342651] [2024-06-27 18:29:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:26,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:27,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:27,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886342651] [2024-06-27 18:29:27,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886342651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:27,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:27,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:27,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169155969] [2024-06-27 18:29:27,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:27,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:27,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:27,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:27,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:27,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:27,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 255 transitions, 2686 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:27,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:27,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:27,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:27,900 INFO L124 PetriNetUnfolderBase]: 1910/3344 cut-off events. [2024-06-27 18:29:27,900 INFO L125 PetriNetUnfolderBase]: For 162898/162898 co-relation queries the response was YES. [2024-06-27 18:29:27,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19352 conditions, 3344 events. 1910/3344 cut-off events. For 162898/162898 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 20814 event pairs, 334 based on Foata normal form. 3/3325 useless extension candidates. Maximal degree in co-relation 19219. Up to 1649 conditions per place. [2024-06-27 18:29:27,934 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 216 selfloop transitions, 83 changer transitions 0/307 dead transitions. [2024-06-27 18:29:27,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 307 transitions, 3701 flow [2024-06-27 18:29:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:27,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-27 18:29:27,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051282051282051 [2024-06-27 18:29:27,935 INFO L175 Difference]: Start difference. First operand has 276 places, 255 transitions, 2686 flow. Second operand 10 states and 197 transitions. [2024-06-27 18:29:27,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 307 transitions, 3701 flow [2024-06-27 18:29:28,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 307 transitions, 3570 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:28,611 INFO L231 Difference]: Finished difference. Result has 278 places, 255 transitions, 2726 flow [2024-06-27 18:29:28,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2555, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2726, PETRI_PLACES=278, PETRI_TRANSITIONS=255} [2024-06-27 18:29:28,611 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 235 predicate places. [2024-06-27 18:29:28,611 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 255 transitions, 2726 flow [2024-06-27 18:29:28,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:28,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:28,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:28,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:29:28,612 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:28,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:28,612 INFO L85 PathProgramCache]: Analyzing trace with hash 871162787, now seen corresponding path program 11 times [2024-06-27 18:29:28,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:28,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309816239] [2024-06-27 18:29:28,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:28,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:29,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:29,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309816239] [2024-06-27 18:29:29,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309816239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:29,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:29,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:29,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672542679] [2024-06-27 18:29:29,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:29,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:29,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:29,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:29,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:29,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:29,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 255 transitions, 2726 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:29,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:29,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:29,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:30,043 INFO L124 PetriNetUnfolderBase]: 1930/3363 cut-off events. [2024-06-27 18:29:30,043 INFO L125 PetriNetUnfolderBase]: For 164173/164173 co-relation queries the response was YES. [2024-06-27 18:29:30,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20008 conditions, 3363 events. 1930/3363 cut-off events. For 164173/164173 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20798 event pairs, 445 based on Foata normal form. 1/3334 useless extension candidates. Maximal degree in co-relation 19874. Up to 2894 conditions per place. [2024-06-27 18:29:30,077 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 246 selfloop transitions, 36 changer transitions 0/290 dead transitions. [2024-06-27 18:29:30,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 290 transitions, 3838 flow [2024-06-27 18:29:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:30,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:29:30,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 18:29:30,078 INFO L175 Difference]: Start difference. First operand has 278 places, 255 transitions, 2726 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:29:30,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 290 transitions, 3838 flow [2024-06-27 18:29:30,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 290 transitions, 3658 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:29:30,807 INFO L231 Difference]: Finished difference. Result has 278 places, 259 transitions, 2685 flow [2024-06-27 18:29:30,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2685, PETRI_PLACES=278, PETRI_TRANSITIONS=259} [2024-06-27 18:29:30,807 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 235 predicate places. [2024-06-27 18:29:30,807 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 259 transitions, 2685 flow [2024-06-27 18:29:30,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:30,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:30,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:30,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:29:30,808 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:30,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1447608186, now seen corresponding path program 11 times [2024-06-27 18:29:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:30,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951409243] [2024-06-27 18:29:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:30,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:31,445 INFO 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 18:29:31,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:31,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951409243] [2024-06-27 18:29:31,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951409243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:31,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:31,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:31,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593318037] [2024-06-27 18:29:31,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:31,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:31,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:31,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:31,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:31,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:31,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 259 transitions, 2685 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:31,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:31,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:31,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:32,234 INFO L124 PetriNetUnfolderBase]: 1963/3379 cut-off events. [2024-06-27 18:29:32,235 INFO L125 PetriNetUnfolderBase]: For 173866/173866 co-relation queries the response was YES. [2024-06-27 18:29:32,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19771 conditions, 3379 events. 1963/3379 cut-off events. For 173866/173866 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 20764 event pairs, 389 based on Foata normal form. 3/3347 useless extension candidates. Maximal degree in co-relation 19636. Up to 2473 conditions per place. [2024-06-27 18:29:32,268 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 247 selfloop transitions, 48 changer transitions 0/303 dead transitions. [2024-06-27 18:29:32,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 303 transitions, 3663 flow [2024-06-27 18:29:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:29:32,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-27 18:29:32,269 INFO L175 Difference]: Start difference. First operand has 278 places, 259 transitions, 2685 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:29:32,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 303 transitions, 3663 flow [2024-06-27 18:29:33,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 303 transitions, 3449 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:33,096 INFO L231 Difference]: Finished difference. Result has 279 places, 261 transitions, 2594 flow [2024-06-27 18:29:33,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2594, PETRI_PLACES=279, PETRI_TRANSITIONS=261} [2024-06-27 18:29:33,096 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-06-27 18:29:33,096 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 261 transitions, 2594 flow [2024-06-27 18:29:33,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:33,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:33,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:33,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:29:33,097 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:33,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1454959836, now seen corresponding path program 12 times [2024-06-27 18:29:33,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:33,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913020283] [2024-06-27 18:29:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:33,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:33,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913020283] [2024-06-27 18:29:33,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913020283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:33,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:33,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:33,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237213881] [2024-06-27 18:29:33,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:33,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:33,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:33,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:33,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:33,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:33,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 261 transitions, 2594 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:33,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:33,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:33,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:34,655 INFO L124 PetriNetUnfolderBase]: 2074/3575 cut-off events. [2024-06-27 18:29:34,655 INFO L125 PetriNetUnfolderBase]: For 200022/200022 co-relation queries the response was YES. [2024-06-27 18:29:34,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21320 conditions, 3575 events. 2074/3575 cut-off events. For 200022/200022 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 22255 event pairs, 450 based on Foata normal form. 3/3542 useless extension candidates. Maximal degree in co-relation 21184. Up to 2553 conditions per place. [2024-06-27 18:29:34,687 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 261 selfloop transitions, 45 changer transitions 0/314 dead transitions. [2024-06-27 18:29:34,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 314 transitions, 4012 flow [2024-06-27 18:29:34,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:34,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 18:29:34,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897435897435897 [2024-06-27 18:29:34,688 INFO L175 Difference]: Start difference. First operand has 279 places, 261 transitions, 2594 flow. Second operand 10 states and 191 transitions. [2024-06-27 18:29:34,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 314 transitions, 4012 flow [2024-06-27 18:29:35,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 314 transitions, 3746 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 18:29:35,532 INFO L231 Difference]: Finished difference. Result has 279 places, 267 transitions, 2501 flow [2024-06-27 18:29:35,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2501, PETRI_PLACES=279, PETRI_TRANSITIONS=267} [2024-06-27 18:29:35,533 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-06-27 18:29:35,533 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 267 transitions, 2501 flow [2024-06-27 18:29:35,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:35,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:35,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:35,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:29:35,533 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:35,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:35,533 INFO L85 PathProgramCache]: Analyzing trace with hash -511486952, now seen corresponding path program 13 times [2024-06-27 18:29:35,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:35,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45972441] [2024-06-27 18:29:35,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:35,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:36,167 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 18:29:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45972441] [2024-06-27 18:29:36,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45972441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:36,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:36,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:36,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506486989] [2024-06-27 18:29:36,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:36,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:36,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:36,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:36,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:36,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 267 transitions, 2501 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:36,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:36,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:36,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:36,980 INFO L124 PetriNetUnfolderBase]: 2107/3617 cut-off events. [2024-06-27 18:29:36,980 INFO L125 PetriNetUnfolderBase]: For 201119/201119 co-relation queries the response was YES. [2024-06-27 18:29:37,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21117 conditions, 3617 events. 2107/3617 cut-off events. For 201119/201119 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 22502 event pairs, 467 based on Foata normal form. 3/3583 useless extension candidates. Maximal degree in co-relation 20980. Up to 2577 conditions per place. [2024-06-27 18:29:37,015 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 255 selfloop transitions, 49 changer transitions 0/312 dead transitions. [2024-06-27 18:29:37,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 312 transitions, 3675 flow [2024-06-27 18:29:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:29:37,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-27 18:29:37,017 INFO L175 Difference]: Start difference. First operand has 279 places, 267 transitions, 2501 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:29:37,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 312 transitions, 3675 flow [2024-06-27 18:29:37,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 312 transitions, 3607 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:37,955 INFO L231 Difference]: Finished difference. Result has 284 places, 269 transitions, 2556 flow [2024-06-27 18:29:37,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2437, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2556, PETRI_PLACES=284, PETRI_TRANSITIONS=269} [2024-06-27 18:29:37,955 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 241 predicate places. [2024-06-27 18:29:37,955 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 269 transitions, 2556 flow [2024-06-27 18:29:37,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:37,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:37,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:37,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:29:37,956 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:37,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash -519111464, now seen corresponding path program 7 times [2024-06-27 18:29:37,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:37,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274437375] [2024-06-27 18:29:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:37,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:38,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:38,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274437375] [2024-06-27 18:29:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274437375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:38,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:38,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:38,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398356902] [2024-06-27 18:29:38,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:38,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:38,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:38,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:38,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:38,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:38,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 269 transitions, 2556 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 18:29:38,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:38,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:38,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:39,665 INFO L124 PetriNetUnfolderBase]: 2005/3612 cut-off events. [2024-06-27 18:29:39,665 INFO L125 PetriNetUnfolderBase]: For 194094/194112 co-relation queries the response was YES. [2024-06-27 18:29:39,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20493 conditions, 3612 events. 2005/3612 cut-off events. For 194094/194112 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23576 event pairs, 498 based on Foata normal form. 1/3565 useless extension candidates. Maximal degree in co-relation 20355. Up to 2996 conditions per place. [2024-06-27 18:29:39,702 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 239 selfloop transitions, 18 changer transitions 0/300 dead transitions. [2024-06-27 18:29:39,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 300 transitions, 3254 flow [2024-06-27 18:29:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:39,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:29:39,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-27 18:29:39,704 INFO L175 Difference]: Start difference. First operand has 284 places, 269 transitions, 2556 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:29:39,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 300 transitions, 3254 flow [2024-06-27 18:29:40,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 300 transitions, 3167 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:40,612 INFO L231 Difference]: Finished difference. Result has 287 places, 271 transitions, 2552 flow [2024-06-27 18:29:40,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2469, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2552, PETRI_PLACES=287, PETRI_TRANSITIONS=271} [2024-06-27 18:29:40,612 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 244 predicate places. [2024-06-27 18:29:40,613 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 271 transitions, 2552 flow [2024-06-27 18:29:40,613 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 18:29:40,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:40,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:40,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:29:40,613 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:40,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash -518903702, now seen corresponding path program 14 times [2024-06-27 18:29:40,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:40,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498491985] [2024-06-27 18:29:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:40,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:41,328 INFO 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 18:29:41,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:41,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498491985] [2024-06-27 18:29:41,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498491985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:41,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:41,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:41,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312204952] [2024-06-27 18:29:41,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:41,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:41,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:41,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:41,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 271 transitions, 2552 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:41,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:41,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:41,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:42,178 INFO L124 PetriNetUnfolderBase]: 2139/3673 cut-off events. [2024-06-27 18:29:42,179 INFO L125 PetriNetUnfolderBase]: For 206452/206452 co-relation queries the response was YES. [2024-06-27 18:29:42,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21051 conditions, 3673 events. 2139/3673 cut-off events. For 206452/206452 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 22972 event pairs, 426 based on Foata normal form. 3/3638 useless extension candidates. Maximal degree in co-relation 20912. Up to 2600 conditions per place. [2024-06-27 18:29:42,217 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 260 selfloop transitions, 51 changer transitions 0/319 dead transitions. [2024-06-27 18:29:42,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 319 transitions, 3756 flow [2024-06-27 18:29:42,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:42,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 18:29:42,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-06-27 18:29:42,218 INFO L175 Difference]: Start difference. First operand has 287 places, 271 transitions, 2552 flow. Second operand 10 states and 189 transitions. [2024-06-27 18:29:42,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 319 transitions, 3756 flow [2024-06-27 18:29:43,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 319 transitions, 3689 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:43,157 INFO L231 Difference]: Finished difference. Result has 289 places, 273 transitions, 2608 flow [2024-06-27 18:29:43,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2608, PETRI_PLACES=289, PETRI_TRANSITIONS=273} [2024-06-27 18:29:43,159 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 246 predicate places. [2024-06-27 18:29:43,159 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 273 transitions, 2608 flow [2024-06-27 18:29:43,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:43,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:43,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:43,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:29:43,160 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:43,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash -519111309, now seen corresponding path program 12 times [2024-06-27 18:29:43,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:43,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957199959] [2024-06-27 18:29:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:43,811 INFO 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 18:29:43,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:43,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957199959] [2024-06-27 18:29:43,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957199959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:43,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:43,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:43,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426561288] [2024-06-27 18:29:43,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:43,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:43,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:43,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:43,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:43,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 273 transitions, 2608 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:43,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:43,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:43,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:44,584 INFO L124 PetriNetUnfolderBase]: 2137/3707 cut-off events. [2024-06-27 18:29:44,585 INFO L125 PetriNetUnfolderBase]: For 198681/198681 co-relation queries the response was YES. [2024-06-27 18:29:44,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21322 conditions, 3707 events. 2137/3707 cut-off events. For 198681/198681 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23284 event pairs, 529 based on Foata normal form. 1/3666 useless extension candidates. Maximal degree in co-relation 21182. Up to 3215 conditions per place. [2024-06-27 18:29:44,620 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 256 selfloop transitions, 39 changer transitions 0/303 dead transitions. [2024-06-27 18:29:44,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 303 transitions, 3526 flow [2024-06-27 18:29:44,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:44,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:44,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:29:44,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2024-06-27 18:29:44,621 INFO L175 Difference]: Start difference. First operand has 289 places, 273 transitions, 2608 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:29:44,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 303 transitions, 3526 flow [2024-06-27 18:29:45,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 303 transitions, 3428 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:45,664 INFO L231 Difference]: Finished difference. Result has 292 places, 273 transitions, 2593 flow [2024-06-27 18:29:45,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2510, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2593, PETRI_PLACES=292, PETRI_TRANSITIONS=273} [2024-06-27 18:29:45,665 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 249 predicate places. [2024-06-27 18:29:45,665 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 273 transitions, 2593 flow [2024-06-27 18:29:45,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:45,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:45,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:45,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:29:45,665 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:45,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:45,666 INFO L85 PathProgramCache]: Analyzing trace with hash -518896262, now seen corresponding path program 15 times [2024-06-27 18:29:45,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:45,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580522828] [2024-06-27 18:29:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:45,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:46,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:46,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580522828] [2024-06-27 18:29:46,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580522828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:46,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:46,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:46,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568797558] [2024-06-27 18:29:46,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:46,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:46,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:46,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:46,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:46,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 273 transitions, 2593 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:46,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:46,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:46,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:47,117 INFO L124 PetriNetUnfolderBase]: 2131/3625 cut-off events. [2024-06-27 18:29:47,117 INFO L125 PetriNetUnfolderBase]: For 198280/198280 co-relation queries the response was YES. [2024-06-27 18:29:47,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20792 conditions, 3625 events. 2131/3625 cut-off events. For 198280/198280 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 22403 event pairs, 406 based on Foata normal form. 3/3591 useless extension candidates. Maximal degree in co-relation 20651. Up to 2593 conditions per place. [2024-06-27 18:29:47,153 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 255 selfloop transitions, 52 changer transitions 0/315 dead transitions. [2024-06-27 18:29:47,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 315 transitions, 3585 flow [2024-06-27 18:29:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:29:47,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-27 18:29:47,154 INFO L175 Difference]: Start difference. First operand has 292 places, 273 transitions, 2593 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:29:47,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 315 transitions, 3585 flow [2024-06-27 18:29:48,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 315 transitions, 3507 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:48,173 INFO L231 Difference]: Finished difference. Result has 294 places, 273 transitions, 2624 flow [2024-06-27 18:29:48,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2624, PETRI_PLACES=294, PETRI_TRANSITIONS=273} [2024-06-27 18:29:48,173 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 251 predicate places. [2024-06-27 18:29:48,173 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 273 transitions, 2624 flow [2024-06-27 18:29:48,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:48,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:48,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:48,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:29:48,173 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:48,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:48,174 INFO L85 PathProgramCache]: Analyzing trace with hash -511026591, now seen corresponding path program 13 times [2024-06-27 18:29:48,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:48,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862837992] [2024-06-27 18:29:48,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:48,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:48,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862837992] [2024-06-27 18:29:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862837992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:48,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:48,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:48,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366180808] [2024-06-27 18:29:48,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:48,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:48,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:48,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:48,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:48,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:48,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 273 transitions, 2624 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:48,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:48,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:48,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:49,667 INFO L124 PetriNetUnfolderBase]: 2140/3712 cut-off events. [2024-06-27 18:29:49,667 INFO L125 PetriNetUnfolderBase]: For 194645/194645 co-relation queries the response was YES. [2024-06-27 18:29:49,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21275 conditions, 3712 events. 2140/3712 cut-off events. For 194645/194645 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23343 event pairs, 527 based on Foata normal form. 1/3671 useless extension candidates. Maximal degree in co-relation 21133. Up to 3216 conditions per place. [2024-06-27 18:29:49,706 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 261 selfloop transitions, 36 changer transitions 0/305 dead transitions. [2024-06-27 18:29:49,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 305 transitions, 3575 flow [2024-06-27 18:29:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:29:49,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 18:29:49,707 INFO L175 Difference]: Start difference. First operand has 294 places, 273 transitions, 2624 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:29:49,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 305 transitions, 3575 flow [2024-06-27 18:29:50,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 305 transitions, 3468 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:50,739 INFO L231 Difference]: Finished difference. Result has 295 places, 275 transitions, 2619 flow [2024-06-27 18:29:50,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2619, PETRI_PLACES=295, PETRI_TRANSITIONS=275} [2024-06-27 18:29:50,740 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 252 predicate places. [2024-06-27 18:29:50,740 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 275 transitions, 2619 flow [2024-06-27 18:29:50,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:50,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:50,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:50,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:29:50,740 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:50,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:50,741 INFO L85 PathProgramCache]: Analyzing trace with hash -503869094, now seen corresponding path program 16 times [2024-06-27 18:29:50,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:50,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480614997] [2024-06-27 18:29:50,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:50,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:51,383 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 18:29:51,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:51,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480614997] [2024-06-27 18:29:51,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480614997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:51,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:51,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:51,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572337172] [2024-06-27 18:29:51,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:51,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:51,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:51,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:51,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:51,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 275 transitions, 2619 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:51,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:51,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:51,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:52,168 INFO L124 PetriNetUnfolderBase]: 2134/3688 cut-off events. [2024-06-27 18:29:52,168 INFO L125 PetriNetUnfolderBase]: For 193981/193981 co-relation queries the response was YES. [2024-06-27 18:29:52,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20760 conditions, 3688 events. 2134/3688 cut-off events. For 193981/193981 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 23169 event pairs, 466 based on Foata normal form. 3/3654 useless extension candidates. Maximal degree in co-relation 20617. Up to 2603 conditions per place. [2024-06-27 18:29:52,203 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 264 selfloop transitions, 48 changer transitions 0/320 dead transitions. [2024-06-27 18:29:52,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 320 transitions, 3637 flow [2024-06-27 18:29:52,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 18:29:52,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:29:52,204 INFO L175 Difference]: Start difference. First operand has 295 places, 275 transitions, 2619 flow. Second operand 10 states and 190 transitions. [2024-06-27 18:29:52,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 320 transitions, 3637 flow [2024-06-27 18:29:53,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 320 transitions, 3565 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:53,152 INFO L231 Difference]: Finished difference. Result has 298 places, 275 transitions, 2648 flow [2024-06-27 18:29:53,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2648, PETRI_PLACES=298, PETRI_TRANSITIONS=275} [2024-06-27 18:29:53,153 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 255 predicate places. [2024-06-27 18:29:53,153 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 275 transitions, 2648 flow [2024-06-27 18:29:53,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:53,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:53,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:53,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:29:53,153 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:53,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash -511754079, now seen corresponding path program 14 times [2024-06-27 18:29:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:53,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893793354] [2024-06-27 18:29:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:53,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:53,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:53,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893793354] [2024-06-27 18:29:53,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893793354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:53,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:53,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:53,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809305512] [2024-06-27 18:29:53,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:53,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:53,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:53,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:53,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:53,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 275 transitions, 2648 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:53,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:53,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:53,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:54,731 INFO L124 PetriNetUnfolderBase]: 2143/3722 cut-off events. [2024-06-27 18:29:54,732 INFO L125 PetriNetUnfolderBase]: For 189649/189649 co-relation queries the response was YES. [2024-06-27 18:29:54,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21111 conditions, 3722 events. 2143/3722 cut-off events. For 189649/189649 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23464 event pairs, 530 based on Foata normal form. 1/3681 useless extension candidates. Maximal degree in co-relation 20967. Up to 3217 conditions per place. [2024-06-27 18:29:54,761 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 262 selfloop transitions, 37 changer transitions 0/307 dead transitions. [2024-06-27 18:29:54,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 307 transitions, 3609 flow [2024-06-27 18:29:54,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:54,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:29:54,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-27 18:29:54,762 INFO L175 Difference]: Start difference. First operand has 298 places, 275 transitions, 2648 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:29:54,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 307 transitions, 3609 flow [2024-06-27 18:29:55,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 307 transitions, 3487 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:29:55,757 INFO L231 Difference]: Finished difference. Result has 298 places, 277 transitions, 2632 flow [2024-06-27 18:29:55,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2526, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2632, PETRI_PLACES=298, PETRI_TRANSITIONS=277} [2024-06-27 18:29:55,758 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 255 predicate places. [2024-06-27 18:29:55,758 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 277 transitions, 2632 flow [2024-06-27 18:29:55,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:55,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:55,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:55,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:29:55,758 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:55,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:55,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1704317946, now seen corresponding path program 17 times [2024-06-27 18:29:55,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:55,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550689200] [2024-06-27 18:29:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:55,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:56,379 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 18:29:56,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:56,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550689200] [2024-06-27 18:29:56,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550689200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:56,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:56,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:56,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828857338] [2024-06-27 18:29:56,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:56,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:56,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:56,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:56,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:56,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:56,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 277 transitions, 2632 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:56,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:56,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:56,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:57,329 INFO L124 PetriNetUnfolderBase]: 2215/3820 cut-off events. [2024-06-27 18:29:57,329 INFO L125 PetriNetUnfolderBase]: For 215938/215938 co-relation queries the response was YES. [2024-06-27 18:29:57,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21645 conditions, 3820 events. 2215/3820 cut-off events. For 215938/215938 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 24126 event pairs, 494 based on Foata normal form. 3/3779 useless extension candidates. Maximal degree in co-relation 21500. Up to 3121 conditions per place. [2024-06-27 18:29:57,369 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 284 selfloop transitions, 31 changer transitions 0/323 dead transitions. [2024-06-27 18:29:57,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 323 transitions, 3864 flow [2024-06-27 18:29:57,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:57,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:57,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:29:57,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-06-27 18:29:57,370 INFO L175 Difference]: Start difference. First operand has 298 places, 277 transitions, 2632 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:29:57,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 323 transitions, 3864 flow [2024-06-27 18:29:58,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 323 transitions, 3793 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:58,582 INFO L231 Difference]: Finished difference. Result has 301 places, 281 transitions, 2668 flow [2024-06-27 18:29:58,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2668, PETRI_PLACES=301, PETRI_TRANSITIONS=281} [2024-06-27 18:29:58,583 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 258 predicate places. [2024-06-27 18:29:58,583 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 281 transitions, 2668 flow [2024-06-27 18:29:58,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:58,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:58,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:58,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:29:58,583 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:58,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash 948899015, now seen corresponding path program 1 times [2024-06-27 18:29:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:58,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028871916] [2024-06-27 18:29:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:58,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:59,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:59,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028871916] [2024-06-27 18:29:59,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028871916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:59,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:59,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:59,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713673225] [2024-06-27 18:29:59,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:59,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:59,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:59,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:59,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:59,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:29:59,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 281 transitions, 2668 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:29:59,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:59,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:29:59,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:00,294 INFO L124 PetriNetUnfolderBase]: 2217/3779 cut-off events. [2024-06-27 18:30:00,294 INFO L125 PetriNetUnfolderBase]: For 206900/206900 co-relation queries the response was YES. [2024-06-27 18:30:00,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21523 conditions, 3779 events. 2217/3779 cut-off events. For 206900/206900 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 23492 event pairs, 542 based on Foata normal form. 2/3731 useless extension candidates. Maximal degree in co-relation 21377. Up to 3420 conditions per place. [2024-06-27 18:30:00,332 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 285 selfloop transitions, 21 changer transitions 0/314 dead transitions. [2024-06-27 18:30:00,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 314 transitions, 3416 flow [2024-06-27 18:30:00,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:30:00,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4282051282051282 [2024-06-27 18:30:00,333 INFO L175 Difference]: Start difference. First operand has 301 places, 281 transitions, 2668 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:30:00,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 314 transitions, 3416 flow [2024-06-27 18:30:01,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 314 transitions, 3312 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:01,359 INFO L231 Difference]: Finished difference. Result has 303 places, 283 transitions, 2639 flow [2024-06-27 18:30:01,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2564, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2639, PETRI_PLACES=303, PETRI_TRANSITIONS=283} [2024-06-27 18:30:01,360 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 260 predicate places. [2024-06-27 18:30:01,367 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 283 transitions, 2639 flow [2024-06-27 18:30:01,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:30:01,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:01,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:01,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:30:01,368 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:01,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash 595548956, now seen corresponding path program 18 times [2024-06-27 18:30:01,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:01,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230036773] [2024-06-27 18:30:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:01,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:02,006 INFO 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 18:30:02,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:02,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230036773] [2024-06-27 18:30:02,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230036773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:02,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:02,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:02,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195010684] [2024-06-27 18:30:02,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:02,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:02,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:02,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:02,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:02,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:02,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 283 transitions, 2639 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:30:02,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:02,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:02,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:02,944 INFO L124 PetriNetUnfolderBase]: 2250/3857 cut-off events. [2024-06-27 18:30:02,944 INFO L125 PetriNetUnfolderBase]: For 214360/214360 co-relation queries the response was YES. [2024-06-27 18:30:02,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21628 conditions, 3857 events. 2250/3857 cut-off events. For 214360/214360 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 24300 event pairs, 544 based on Foata normal form. 3/3814 useless extension candidates. Maximal degree in co-relation 21481. Up to 3149 conditions per place. [2024-06-27 18:30:02,984 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 287 selfloop transitions, 32 changer transitions 0/327 dead transitions. [2024-06-27 18:30:02,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 327 transitions, 3863 flow [2024-06-27 18:30:02,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:30:02,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:30:02,987 INFO L175 Difference]: Start difference. First operand has 303 places, 283 transitions, 2639 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:30:02,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 327 transitions, 3863 flow [2024-06-27 18:30:04,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 327 transitions, 3804 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:04,118 INFO L231 Difference]: Finished difference. Result has 305 places, 285 transitions, 2665 flow [2024-06-27 18:30:04,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2665, PETRI_PLACES=305, PETRI_TRANSITIONS=285} [2024-06-27 18:30:04,119 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 262 predicate places. [2024-06-27 18:30:04,119 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 285 transitions, 2665 flow [2024-06-27 18:30:04,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:30:04,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:04,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:04,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:30:04,120 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:04,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash 936953816, now seen corresponding path program 19 times [2024-06-27 18:30:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:04,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178212435] [2024-06-27 18:30:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:04,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:04,735 INFO 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 18:30:04,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:04,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178212435] [2024-06-27 18:30:04,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178212435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:04,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:04,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:04,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93634072] [2024-06-27 18:30:04,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:04,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:04,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:04,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:04,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:04,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:04,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 285 transitions, 2665 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:30:04,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:04,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:04,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:05,689 INFO L124 PetriNetUnfolderBase]: 2244/3860 cut-off events. [2024-06-27 18:30:05,689 INFO L125 PetriNetUnfolderBase]: For 204370/204370 co-relation queries the response was YES. [2024-06-27 18:30:05,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21439 conditions, 3860 events. 2244/3860 cut-off events. For 204370/204370 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 24427 event pairs, 555 based on Foata normal form. 3/3814 useless extension candidates. Maximal degree in co-relation 21291. Up to 3407 conditions per place. [2024-06-27 18:30:05,732 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 293 selfloop transitions, 20 changer transitions 0/321 dead transitions. [2024-06-27 18:30:05,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 321 transitions, 3441 flow [2024-06-27 18:30:05,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:05,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:30:05,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-27 18:30:05,734 INFO L175 Difference]: Start difference. First operand has 305 places, 285 transitions, 2665 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:30:05,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 321 transitions, 3441 flow [2024-06-27 18:30:06,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 321 transitions, 3380 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:06,990 INFO L231 Difference]: Finished difference. Result has 308 places, 285 transitions, 2649 flow [2024-06-27 18:30:06,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2604, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2649, PETRI_PLACES=308, PETRI_TRANSITIONS=285} [2024-06-27 18:30:06,990 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 265 predicate places. [2024-06-27 18:30:06,990 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 285 transitions, 2649 flow [2024-06-27 18:30:06,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:30:06,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:06,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:06,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:30:06,990 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:06,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:06,991 INFO L85 PathProgramCache]: Analyzing trace with hash 603159374, now seen corresponding path program 20 times [2024-06-27 18:30:06,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:06,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420558801] [2024-06-27 18:30:06,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:06,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:07,609 INFO 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 18:30:07,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:07,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420558801] [2024-06-27 18:30:07,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420558801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:07,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:07,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:07,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222898025] [2024-06-27 18:30:07,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:07,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:07,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:07,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:07,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:07,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:07,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 285 transitions, 2649 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:30:07,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:07,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:07,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:08,603 INFO L124 PetriNetUnfolderBase]: 2238/3839 cut-off events. [2024-06-27 18:30:08,603 INFO L125 PetriNetUnfolderBase]: For 193479/193479 co-relation queries the response was YES. [2024-06-27 18:30:08,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21031 conditions, 3839 events. 2238/3839 cut-off events. For 193479/193479 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24208 event pairs, 490 based on Foata normal form. 3/3798 useless extension candidates. Maximal degree in co-relation 20882. Up to 3141 conditions per place. [2024-06-27 18:30:08,643 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 282 selfloop transitions, 35 changer transitions 0/325 dead transitions. [2024-06-27 18:30:08,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 325 transitions, 3461 flow [2024-06-27 18:30:08,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:08,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:08,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 18:30:08,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564102564102564 [2024-06-27 18:30:08,644 INFO L175 Difference]: Start difference. First operand has 308 places, 285 transitions, 2649 flow. Second operand 10 states and 178 transitions. [2024-06-27 18:30:08,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 325 transitions, 3461 flow [2024-06-27 18:30:09,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 325 transitions, 3396 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:30:09,734 INFO L231 Difference]: Finished difference. Result has 308 places, 285 transitions, 2659 flow [2024-06-27 18:30:09,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2584, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2659, PETRI_PLACES=308, PETRI_TRANSITIONS=285} [2024-06-27 18:30:09,735 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 265 predicate places. [2024-06-27 18:30:09,735 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 285 transitions, 2659 flow [2024-06-27 18:30:09,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:30:09,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:09,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:09,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:30:09,736 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:09,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:09,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1011319521, now seen corresponding path program 15 times [2024-06-27 18:30:09,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:09,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171268289] [2024-06-27 18:30:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:09,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:10,359 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 18:30:10,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:10,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171268289] [2024-06-27 18:30:10,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171268289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:10,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:10,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:10,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882818082] [2024-06-27 18:30:10,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:10,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:10,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:10,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:10,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:10,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:10,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 285 transitions, 2659 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:30:10,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:10,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:10,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:11,423 INFO L124 PetriNetUnfolderBase]: 2236/3857 cut-off events. [2024-06-27 18:30:11,423 INFO L125 PetriNetUnfolderBase]: For 182115/182115 co-relation queries the response was YES. [2024-06-27 18:30:11,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21106 conditions, 3857 events. 2236/3857 cut-off events. For 182115/182115 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 24408 event pairs, 583 based on Foata normal form. 1/3807 useless extension candidates. Maximal degree in co-relation 20956. Up to 3488 conditions per place. [2024-06-27 18:30:11,464 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 286 selfloop transitions, 19 changer transitions 0/313 dead transitions. [2024-06-27 18:30:11,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 313 transitions, 3399 flow [2024-06-27 18:30:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:30:11,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-06-27 18:30:11,465 INFO L175 Difference]: Start difference. First operand has 308 places, 285 transitions, 2659 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:30:11,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 313 transitions, 3399 flow [2024-06-27 18:30:12,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 313 transitions, 3283 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 18:30:12,455 INFO L231 Difference]: Finished difference. Result has 308 places, 285 transitions, 2586 flow [2024-06-27 18:30:12,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2586, PETRI_PLACES=308, PETRI_TRANSITIONS=285} [2024-06-27 18:30:12,456 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 265 predicate places. [2024-06-27 18:30:12,456 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 285 transitions, 2586 flow [2024-06-27 18:30:12,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 18:30:12,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:12,456 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 18:30:12,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:30:12,457 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:12,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:12,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1391525749, now seen corresponding path program 1 times [2024-06-27 18:30:12,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:12,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645544796] [2024-06-27 18:30:12,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:12,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:13,324 INFO 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 18:30:13,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:13,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645544796] [2024-06-27 18:30:13,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645544796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:13,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:13,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:13,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447174548] [2024-06-27 18:30:13,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:13,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:13,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:13,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:13,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:13,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:13,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 285 transitions, 2586 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 18:30:13,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:13,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:13,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:14,381 INFO L124 PetriNetUnfolderBase]: 2155/4034 cut-off events. [2024-06-27 18:30:14,381 INFO L125 PetriNetUnfolderBase]: For 201682/201688 co-relation queries the response was YES. [2024-06-27 18:30:14,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20986 conditions, 4034 events. 2155/4034 cut-off events. For 201682/201688 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 27902 event pairs, 490 based on Foata normal form. 2/4025 useless extension candidates. Maximal degree in co-relation 20835. Up to 3038 conditions per place. [2024-06-27 18:30:14,426 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 262 selfloop transitions, 42 changer transitions 0/349 dead transitions. [2024-06-27 18:30:14,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 349 transitions, 3744 flow [2024-06-27 18:30:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:30:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:30:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 221 transitions. [2024-06-27 18:30:14,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:30:14,427 INFO L175 Difference]: Start difference. First operand has 308 places, 285 transitions, 2586 flow. Second operand 12 states and 221 transitions. [2024-06-27 18:30:14,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 349 transitions, 3744 flow [2024-06-27 18:30:15,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 349 transitions, 3649 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 18:30:15,511 INFO L231 Difference]: Finished difference. Result has 309 places, 291 transitions, 2678 flow [2024-06-27 18:30:15,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2678, PETRI_PLACES=309, PETRI_TRANSITIONS=291} [2024-06-27 18:30:15,512 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 266 predicate places. [2024-06-27 18:30:15,512 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 291 transitions, 2678 flow [2024-06-27 18:30:15,512 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 18:30:15,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:15,512 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 18:30:15,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:30:15,513 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:15,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash -441683483, now seen corresponding path program 1 times [2024-06-27 18:30:15,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:15,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353123924] [2024-06-27 18:30:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:15,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:16,385 INFO 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 18:30:16,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:16,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353123924] [2024-06-27 18:30:16,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353123924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:16,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:16,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:16,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029302391] [2024-06-27 18:30:16,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:16,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:16,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:16,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:16,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:16,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:16,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 291 transitions, 2678 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:16,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:16,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:16,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:17,446 INFO L124 PetriNetUnfolderBase]: 2276/4165 cut-off events. [2024-06-27 18:30:17,446 INFO L125 PetriNetUnfolderBase]: For 200818/200818 co-relation queries the response was YES. [2024-06-27 18:30:17,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22086 conditions, 4165 events. 2276/4165 cut-off events. For 200818/200818 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 28258 event pairs, 562 based on Foata normal form. 1/4158 useless extension candidates. Maximal degree in co-relation 21933. Up to 3389 conditions per place. [2024-06-27 18:30:17,491 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 300 selfloop transitions, 44 changer transitions 0/352 dead transitions. [2024-06-27 18:30:17,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 352 transitions, 3689 flow [2024-06-27 18:30:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:30:17,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:30:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 222 transitions. [2024-06-27 18:30:17,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4378698224852071 [2024-06-27 18:30:17,492 INFO L175 Difference]: Start difference. First operand has 309 places, 291 transitions, 2678 flow. Second operand 13 states and 222 transitions. [2024-06-27 18:30:17,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 352 transitions, 3689 flow [2024-06-27 18:30:18,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 352 transitions, 3611 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:18,685 INFO L231 Difference]: Finished difference. Result has 315 places, 293 transitions, 2733 flow [2024-06-27 18:30:18,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2733, PETRI_PLACES=315, PETRI_TRANSITIONS=293} [2024-06-27 18:30:18,685 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 272 predicate places. [2024-06-27 18:30:18,685 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 293 transitions, 2733 flow [2024-06-27 18:30:18,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:18,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:18,685 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 18:30:18,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:30:18,685 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:18,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash -90103011, now seen corresponding path program 2 times [2024-06-27 18:30:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:18,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328090276] [2024-06-27 18:30:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:18,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:19,707 INFO 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 18:30:19,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:19,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328090276] [2024-06-27 18:30:19,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328090276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:19,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:19,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:19,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497753368] [2024-06-27 18:30:19,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:19,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:19,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:19,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:19,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:19,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 293 transitions, 2733 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 18:30:19,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:19,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:19,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:20,862 INFO L124 PetriNetUnfolderBase]: 2162/4030 cut-off events. [2024-06-27 18:30:20,863 INFO L125 PetriNetUnfolderBase]: For 199480/199482 co-relation queries the response was YES. [2024-06-27 18:30:20,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21127 conditions, 4030 events. 2162/4030 cut-off events. For 199480/199482 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 27872 event pairs, 534 based on Foata normal form. 2/4020 useless extension candidates. Maximal degree in co-relation 20972. Up to 3098 conditions per place. [2024-06-27 18:30:20,905 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 262 selfloop transitions, 41 changer transitions 0/349 dead transitions. [2024-06-27 18:30:20,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 349 transitions, 3607 flow [2024-06-27 18:30:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:30:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:30:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-27 18:30:20,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658119658119658 [2024-06-27 18:30:20,906 INFO L175 Difference]: Start difference. First operand has 315 places, 293 transitions, 2733 flow. Second operand 12 states and 218 transitions. [2024-06-27 18:30:20,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 349 transitions, 3607 flow [2024-06-27 18:30:21,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 349 transitions, 3481 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-27 18:30:21,830 INFO L231 Difference]: Finished difference. Result has 316 places, 293 transitions, 2695 flow [2024-06-27 18:30:21,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2607, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2695, PETRI_PLACES=316, PETRI_TRANSITIONS=293} [2024-06-27 18:30:21,830 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 273 predicate places. [2024-06-27 18:30:21,831 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 293 transitions, 2695 flow [2024-06-27 18:30:21,831 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 18:30:21,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:21,831 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 18:30:21,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:30:21,831 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:21,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:21,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1277841309, now seen corresponding path program 1 times [2024-06-27 18:30:21,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:21,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297886796] [2024-06-27 18:30:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:21,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:22,566 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 18:30:22,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:22,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297886796] [2024-06-27 18:30:22,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297886796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:22,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:22,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:22,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769048393] [2024-06-27 18:30:22,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:22,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:22,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:22,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:22,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:22,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:22,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 293 transitions, 2695 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:22,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:22,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:22,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:23,687 INFO L124 PetriNetUnfolderBase]: 2306/4219 cut-off events. [2024-06-27 18:30:23,687 INFO L125 PetriNetUnfolderBase]: For 208730/208730 co-relation queries the response was YES. [2024-06-27 18:30:23,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22148 conditions, 4219 events. 2306/4219 cut-off events. For 208730/208730 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 28636 event pairs, 579 based on Foata normal form. 3/4212 useless extension candidates. Maximal degree in co-relation 21992. Up to 3481 conditions per place. [2024-06-27 18:30:23,727 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 302 selfloop transitions, 36 changer transitions 0/346 dead transitions. [2024-06-27 18:30:23,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 346 transitions, 3645 flow [2024-06-27 18:30:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:30:23,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44755244755244755 [2024-06-27 18:30:23,728 INFO L175 Difference]: Start difference. First operand has 316 places, 293 transitions, 2695 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:30:23,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 346 transitions, 3645 flow [2024-06-27 18:30:24,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 346 transitions, 3561 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:30:24,731 INFO L231 Difference]: Finished difference. Result has 316 places, 295 transitions, 2722 flow [2024-06-27 18:30:24,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2611, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2722, PETRI_PLACES=316, PETRI_TRANSITIONS=295} [2024-06-27 18:30:24,731 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 273 predicate places. [2024-06-27 18:30:24,731 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 295 transitions, 2722 flow [2024-06-27 18:30:24,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:24,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:24,731 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 18:30:24,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:30:24,732 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:24,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:24,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1956168391, now seen corresponding path program 2 times [2024-06-27 18:30:24,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:24,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792414911] [2024-06-27 18:30:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:24,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:25,439 INFO 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 18:30:25,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:25,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792414911] [2024-06-27 18:30:25,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792414911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:25,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:25,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:25,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588629124] [2024-06-27 18:30:25,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:25,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:25,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:25,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:25,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:25,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:25,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 295 transitions, 2722 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:25,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:25,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:25,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:26,436 INFO L124 PetriNetUnfolderBase]: 2407/4221 cut-off events. [2024-06-27 18:30:26,436 INFO L125 PetriNetUnfolderBase]: For 242647/242647 co-relation queries the response was YES. [2024-06-27 18:30:26,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23468 conditions, 4221 events. 2407/4221 cut-off events. For 242647/242647 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 27572 event pairs, 262 based on Foata normal form. 3/4203 useless extension candidates. Maximal degree in co-relation 23311. Up to 1483 conditions per place. [2024-06-27 18:30:26,483 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 227 selfloop transitions, 127 changer transitions 0/362 dead transitions. [2024-06-27 18:30:26,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 362 transitions, 4241 flow [2024-06-27 18:30:26,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-27 18:30:26,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104895104895105 [2024-06-27 18:30:26,484 INFO L175 Difference]: Start difference. First operand has 316 places, 295 transitions, 2722 flow. Second operand 11 states and 219 transitions. [2024-06-27 18:30:26,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 362 transitions, 4241 flow [2024-06-27 18:30:27,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 362 transitions, 4146 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:27,662 INFO L231 Difference]: Finished difference. Result has 318 places, 301 transitions, 2992 flow [2024-06-27 18:30:27,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2627, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2992, PETRI_PLACES=318, PETRI_TRANSITIONS=301} [2024-06-27 18:30:27,662 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-06-27 18:30:27,662 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 301 transitions, 2992 flow [2024-06-27 18:30:27,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:27,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:27,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:27,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:30:27,663 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:27,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:27,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1273199865, now seen corresponding path program 2 times [2024-06-27 18:30:27,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:27,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772703276] [2024-06-27 18:30:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:27,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:28,540 INFO 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 18:30:28,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:28,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772703276] [2024-06-27 18:30:28,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772703276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:28,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:28,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:28,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594948837] [2024-06-27 18:30:28,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:28,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:28,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:28,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:28,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:28,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:28,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 301 transitions, 2992 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:28,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:28,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:28,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:29,501 INFO L124 PetriNetUnfolderBase]: 2421/4098 cut-off events. [2024-06-27 18:30:29,501 INFO L125 PetriNetUnfolderBase]: For 237771/237771 co-relation queries the response was YES. [2024-06-27 18:30:29,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24193 conditions, 4098 events. 2421/4098 cut-off events. For 237771/237771 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 25692 event pairs, 467 based on Foata normal form. 1/4065 useless extension candidates. Maximal degree in co-relation 24035. Up to 3212 conditions per place. [2024-06-27 18:30:29,550 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 235 selfloop transitions, 122 changer transitions 0/365 dead transitions. [2024-06-27 18:30:29,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 365 transitions, 4313 flow [2024-06-27 18:30:29,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 18:30:29,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592074592074592 [2024-06-27 18:30:29,551 INFO L175 Difference]: Start difference. First operand has 318 places, 301 transitions, 2992 flow. Second operand 11 states and 197 transitions. [2024-06-27 18:30:29,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 365 transitions, 4313 flow [2024-06-27 18:30:31,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 365 transitions, 4166 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:31,151 INFO L231 Difference]: Finished difference. Result has 327 places, 316 transitions, 3471 flow [2024-06-27 18:30:31,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3471, PETRI_PLACES=327, PETRI_TRANSITIONS=316} [2024-06-27 18:30:31,151 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 284 predicate places. [2024-06-27 18:30:31,151 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 316 transitions, 3471 flow [2024-06-27 18:30:31,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:31,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:31,151 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 18:30:31,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:30:31,152 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:31,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:31,152 INFO L85 PathProgramCache]: Analyzing trace with hash 180983435, now seen corresponding path program 3 times [2024-06-27 18:30:31,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:31,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742027256] [2024-06-27 18:30:31,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:31,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:31,999 INFO 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 18:30:31,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:31,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742027256] [2024-06-27 18:30:31,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742027256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:31,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:31,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:31,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628696889] [2024-06-27 18:30:31,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:32,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:32,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:32,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:32,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:32,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:32,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 316 transitions, 3471 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:32,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:32,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:32,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:33,148 INFO L124 PetriNetUnfolderBase]: 2443/4134 cut-off events. [2024-06-27 18:30:33,148 INFO L125 PetriNetUnfolderBase]: For 248725/248725 co-relation queries the response was YES. [2024-06-27 18:30:33,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25104 conditions, 4134 events. 2443/4134 cut-off events. For 248725/248725 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 25980 event pairs, 468 based on Foata normal form. 1/4101 useless extension candidates. Maximal degree in co-relation 24940. Up to 3216 conditions per place. [2024-06-27 18:30:33,190 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 239 selfloop transitions, 127 changer transitions 0/374 dead transitions. [2024-06-27 18:30:33,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 374 transitions, 4947 flow [2024-06-27 18:30:33,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:30:33,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662004662004662 [2024-06-27 18:30:33,191 INFO L175 Difference]: Start difference. First operand has 327 places, 316 transitions, 3471 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:30:33,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 374 transitions, 4947 flow [2024-06-27 18:30:35,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 374 transitions, 4756 flow, removed 90 selfloop flow, removed 2 redundant places. [2024-06-27 18:30:35,053 INFO L231 Difference]: Finished difference. Result has 338 places, 324 transitions, 3768 flow [2024-06-27 18:30:35,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3768, PETRI_PLACES=338, PETRI_TRANSITIONS=324} [2024-06-27 18:30:35,053 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 295 predicate places. [2024-06-27 18:30:35,053 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 324 transitions, 3768 flow [2024-06-27 18:30:35,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:35,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:35,054 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 18:30:35,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:30:35,054 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:35,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash 27984669, now seen corresponding path program 3 times [2024-06-27 18:30:35,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:35,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556178560] [2024-06-27 18:30:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:35,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:36,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:36,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556178560] [2024-06-27 18:30:36,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556178560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:36,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:36,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:36,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824262429] [2024-06-27 18:30:36,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:36,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:36,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:36,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:36,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:36,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 324 transitions, 3768 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 18:30:36,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:36,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:36,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:37,202 INFO L124 PetriNetUnfolderBase]: 2352/4132 cut-off events. [2024-06-27 18:30:37,202 INFO L125 PetriNetUnfolderBase]: For 260666/260667 co-relation queries the response was YES. [2024-06-27 18:30:37,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25243 conditions, 4132 events. 2352/4132 cut-off events. For 260666/260667 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 27037 event pairs, 497 based on Foata normal form. 3/4107 useless extension candidates. Maximal degree in co-relation 25075. Up to 3282 conditions per place. [2024-06-27 18:30:37,253 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 262 selfloop transitions, 53 changer transitions 0/370 dead transitions. [2024-06-27 18:30:37,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 370 transitions, 4657 flow [2024-06-27 18:30:37,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:37,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:30:37,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-27 18:30:37,254 INFO L175 Difference]: Start difference. First operand has 338 places, 324 transitions, 3768 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:30:37,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 370 transitions, 4657 flow [2024-06-27 18:30:38,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 370 transitions, 4453 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:38,472 INFO L231 Difference]: Finished difference. Result has 343 places, 325 transitions, 3708 flow [2024-06-27 18:30:38,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3564, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3708, PETRI_PLACES=343, PETRI_TRANSITIONS=325} [2024-06-27 18:30:38,472 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 300 predicate places. [2024-06-27 18:30:38,472 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 325 transitions, 3708 flow [2024-06-27 18:30:38,472 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 18:30:38,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:38,472 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 18:30:38,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:30:38,473 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:38,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:38,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1273199679, now seen corresponding path program 3 times [2024-06-27 18:30:38,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:38,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092390237] [2024-06-27 18:30:38,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:38,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:39,170 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 18:30:39,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:39,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092390237] [2024-06-27 18:30:39,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092390237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:39,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:39,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:39,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199695497] [2024-06-27 18:30:39,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:39,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:39,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:39,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:39,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:39,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:39,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 325 transitions, 3708 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:39,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:39,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:39,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:40,222 INFO L124 PetriNetUnfolderBase]: 2489/4268 cut-off events. [2024-06-27 18:30:40,222 INFO L125 PetriNetUnfolderBase]: For 271058/271058 co-relation queries the response was YES. [2024-06-27 18:30:40,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26237 conditions, 4268 events. 2489/4268 cut-off events. For 271058/271058 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 27404 event pairs, 264 based on Foata normal form. 3/4249 useless extension candidates. Maximal degree in co-relation 26068. Up to 1505 conditions per place. [2024-06-27 18:30:40,274 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 256 selfloop transitions, 127 changer transitions 0/391 dead transitions. [2024-06-27 18:30:40,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 391 transitions, 5237 flow [2024-06-27 18:30:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:40,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-27 18:30:40,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198135198135199 [2024-06-27 18:30:40,275 INFO L175 Difference]: Start difference. First operand has 343 places, 325 transitions, 3708 flow. Second operand 11 states and 223 transitions. [2024-06-27 18:30:40,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 391 transitions, 5237 flow [2024-06-27 18:30:41,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 391 transitions, 5103 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:41,313 INFO L231 Difference]: Finished difference. Result has 345 places, 327 transitions, 3859 flow [2024-06-27 18:30:41,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3574, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3859, PETRI_PLACES=345, PETRI_TRANSITIONS=327} [2024-06-27 18:30:41,313 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 302 predicate places. [2024-06-27 18:30:41,313 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 327 transitions, 3859 flow [2024-06-27 18:30:41,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:41,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:41,314 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 18:30:41,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:30:41,314 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:41,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:41,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1273372845, now seen corresponding path program 4 times [2024-06-27 18:30:41,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:41,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234131633] [2024-06-27 18:30:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:41,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:42,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:42,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234131633] [2024-06-27 18:30:42,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234131633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:42,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:42,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:42,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196829252] [2024-06-27 18:30:42,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:42,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:42,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:42,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:42,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:42,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:42,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 327 transitions, 3859 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:42,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:42,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:42,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:43,360 INFO L124 PetriNetUnfolderBase]: 2488/4211 cut-off events. [2024-06-27 18:30:43,360 INFO L125 PetriNetUnfolderBase]: For 257743/257743 co-relation queries the response was YES. [2024-06-27 18:30:43,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26629 conditions, 4211 events. 2488/4211 cut-off events. For 257743/257743 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 26586 event pairs, 470 based on Foata normal form. 1/4177 useless extension candidates. Maximal degree in co-relation 26459. Up to 3351 conditions per place. [2024-06-27 18:30:43,413 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 266 selfloop transitions, 99 changer transitions 0/373 dead transitions. [2024-06-27 18:30:43,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 373 transitions, 4851 flow [2024-06-27 18:30:43,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:43,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:43,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 18:30:43,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 18:30:43,414 INFO L175 Difference]: Start difference. First operand has 345 places, 327 transitions, 3859 flow. Second operand 11 states and 198 transitions. [2024-06-27 18:30:43,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 373 transitions, 4851 flow [2024-06-27 18:30:44,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 373 transitions, 4547 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:44,747 INFO L231 Difference]: Finished difference. Result has 348 places, 329 transitions, 3799 flow [2024-06-27 18:30:44,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3573, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3799, PETRI_PLACES=348, PETRI_TRANSITIONS=329} [2024-06-27 18:30:44,748 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-06-27 18:30:44,748 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 329 transitions, 3799 flow [2024-06-27 18:30:44,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:44,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:44,748 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 18:30:44,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:30:44,748 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:44,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:44,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1273372659, now seen corresponding path program 4 times [2024-06-27 18:30:44,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:44,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833525420] [2024-06-27 18:30:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:44,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:45,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:45,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833525420] [2024-06-27 18:30:45,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833525420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:45,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:45,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:45,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105984824] [2024-06-27 18:30:45,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:45,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:45,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:45,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:45,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:45,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:45,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 329 transitions, 3799 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:45,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:45,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:45,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:46,617 INFO L124 PetriNetUnfolderBase]: 2482/4356 cut-off events. [2024-06-27 18:30:46,617 INFO L125 PetriNetUnfolderBase]: For 255073/255073 co-relation queries the response was YES. [2024-06-27 18:30:46,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25934 conditions, 4356 events. 2482/4356 cut-off events. For 255073/255073 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 28644 event pairs, 269 based on Foata normal form. 3/4339 useless extension candidates. Maximal degree in co-relation 25763. Up to 1500 conditions per place. [2024-06-27 18:30:46,665 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 259 selfloop transitions, 125 changer transitions 0/392 dead transitions. [2024-06-27 18:30:46,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 392 transitions, 5088 flow [2024-06-27 18:30:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-27 18:30:46,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198135198135199 [2024-06-27 18:30:46,666 INFO L175 Difference]: Start difference. First operand has 348 places, 329 transitions, 3799 flow. Second operand 11 states and 223 transitions. [2024-06-27 18:30:46,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 392 transitions, 5088 flow [2024-06-27 18:30:47,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 392 transitions, 4875 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:47,602 INFO L231 Difference]: Finished difference. Result has 350 places, 329 transitions, 3841 flow [2024-06-27 18:30:47,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3586, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3841, PETRI_PLACES=350, PETRI_TRANSITIONS=329} [2024-06-27 18:30:47,602 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 307 predicate places. [2024-06-27 18:30:47,602 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 329 transitions, 3841 flow [2024-06-27 18:30:47,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:47,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:47,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:47,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:30:47,603 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:47,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:47,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1107738361, now seen corresponding path program 5 times [2024-06-27 18:30:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:47,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992004293] [2024-06-27 18:30:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:47,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:48,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:48,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992004293] [2024-06-27 18:30:48,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992004293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:48,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:48,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:48,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904461799] [2024-06-27 18:30:48,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:48,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:48,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:48,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:48,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:48,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:48,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 329 transitions, 3841 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:48,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:48,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:48,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:49,726 INFO L124 PetriNetUnfolderBase]: 2502/4251 cut-off events. [2024-06-27 18:30:49,727 INFO L125 PetriNetUnfolderBase]: For 254269/254269 co-relation queries the response was YES. [2024-06-27 18:30:49,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26603 conditions, 4251 events. 2502/4251 cut-off events. For 254269/254269 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 26970 event pairs, 501 based on Foata normal form. 1/4216 useless extension candidates. Maximal degree in co-relation 26431. Up to 3344 conditions per place. [2024-06-27 18:30:49,784 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 271 selfloop transitions, 98 changer transitions 0/377 dead transitions. [2024-06-27 18:30:49,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 377 transitions, 5121 flow [2024-06-27 18:30:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:30:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:30:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2024-06-27 18:30:49,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-27 18:30:49,785 INFO L175 Difference]: Start difference. First operand has 350 places, 329 transitions, 3841 flow. Second operand 12 states and 213 transitions. [2024-06-27 18:30:49,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 377 transitions, 5121 flow [2024-06-27 18:30:51,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 377 transitions, 4843 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 18:30:51,389 INFO L231 Difference]: Finished difference. Result has 351 places, 333 transitions, 3859 flow [2024-06-27 18:30:51,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3563, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3859, PETRI_PLACES=351, PETRI_TRANSITIONS=333} [2024-06-27 18:30:51,390 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 308 predicate places. [2024-06-27 18:30:51,390 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 333 transitions, 3859 flow [2024-06-27 18:30:51,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:51,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:51,390 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 18:30:51,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:30:51,390 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:51,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:51,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1107738485, now seen corresponding path program 4 times [2024-06-27 18:30:51,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:51,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475103375] [2024-06-27 18:30:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:51,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:52,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:52,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475103375] [2024-06-27 18:30:52,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475103375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:52,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:52,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:52,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082276428] [2024-06-27 18:30:52,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:52,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:52,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:52,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:52,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:52,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:52,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 333 transitions, 3859 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 18:30:52,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:52,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:52,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:53,443 INFO L124 PetriNetUnfolderBase]: 2407/4199 cut-off events. [2024-06-27 18:30:53,443 INFO L125 PetriNetUnfolderBase]: For 265248/265252 co-relation queries the response was YES. [2024-06-27 18:30:53,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25754 conditions, 4199 events. 2407/4199 cut-off events. For 265248/265252 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 27463 event pairs, 483 based on Foata normal form. 2/4164 useless extension candidates. Maximal degree in co-relation 25581. Up to 3358 conditions per place. [2024-06-27 18:30:53,498 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 264 selfloop transitions, 52 changer transitions 0/374 dead transitions. [2024-06-27 18:30:53,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 374 transitions, 4729 flow [2024-06-27 18:30:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:30:53,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662004662004662 [2024-06-27 18:30:53,499 INFO L175 Difference]: Start difference. First operand has 351 places, 333 transitions, 3859 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:30:53,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 374 transitions, 4729 flow [2024-06-27 18:30:54,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 374 transitions, 4555 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:54,813 INFO L231 Difference]: Finished difference. Result has 354 places, 334 transitions, 3829 flow [2024-06-27 18:30:54,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3829, PETRI_PLACES=354, PETRI_TRANSITIONS=334} [2024-06-27 18:30:54,814 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 311 predicate places. [2024-06-27 18:30:54,814 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 334 transitions, 3829 flow [2024-06-27 18:30:54,814 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 18:30:54,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:54,814 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 18:30:54,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:30:54,814 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:54,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:54,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1107560545, now seen corresponding path program 5 times [2024-06-27 18:30:54,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:54,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867433694] [2024-06-27 18:30:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:54,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:55,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:55,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867433694] [2024-06-27 18:30:55,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867433694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:55,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:55,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:55,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719752347] [2024-06-27 18:30:55,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:55,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:55,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:55,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:55,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:55,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:55,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 334 transitions, 3829 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:55,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:55,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:55,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:56,728 INFO L124 PetriNetUnfolderBase]: 2665/4627 cut-off events. [2024-06-27 18:30:56,729 INFO L125 PetriNetUnfolderBase]: For 337038/337038 co-relation queries the response was YES. [2024-06-27 18:30:56,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29097 conditions, 4627 events. 2665/4627 cut-off events. For 337038/337038 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30449 event pairs, 486 based on Foata normal form. 3/4593 useless extension candidates. Maximal degree in co-relation 28922. Up to 1665 conditions per place. [2024-06-27 18:30:56,787 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 280 selfloop transitions, 118 changer transitions 0/406 dead transitions. [2024-06-27 18:30:56,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 406 transitions, 5959 flow [2024-06-27 18:30:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:56,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2024-06-27 18:30:56,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337995337995338 [2024-06-27 18:30:56,788 INFO L175 Difference]: Start difference. First operand has 354 places, 334 transitions, 3829 flow. Second operand 11 states and 229 transitions. [2024-06-27 18:30:56,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 406 transitions, 5959 flow [2024-06-27 18:30:58,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 406 transitions, 5825 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:58,654 INFO L231 Difference]: Finished difference. Result has 356 places, 342 transitions, 4064 flow [2024-06-27 18:30:58,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3695, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4064, PETRI_PLACES=356, PETRI_TRANSITIONS=342} [2024-06-27 18:30:58,654 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 313 predicate places. [2024-06-27 18:30:58,655 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 342 transitions, 4064 flow [2024-06-27 18:30:58,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:58,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:58,655 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 18:30:58,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:30:58,655 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:58,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:58,655 INFO L85 PathProgramCache]: Analyzing trace with hash 193801557, now seen corresponding path program 6 times [2024-06-27 18:30:58,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:58,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10442791] [2024-06-27 18:30:58,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:58,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:59,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:59,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10442791] [2024-06-27 18:30:59,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10442791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:59,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:59,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:59,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909598752] [2024-06-27 18:30:59,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:59,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:59,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:59,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:59,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:59,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:30:59,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 342 transitions, 4064 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:30:59,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:59,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:30:59,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:00,606 INFO L124 PetriNetUnfolderBase]: 2674/4523 cut-off events. [2024-06-27 18:31:00,606 INFO L125 PetriNetUnfolderBase]: For 328989/328989 co-relation queries the response was YES. [2024-06-27 18:31:00,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29522 conditions, 4523 events. 2674/4523 cut-off events. For 328989/328989 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28912 event pairs, 554 based on Foata normal form. 1/4484 useless extension candidates. Maximal degree in co-relation 29346. Up to 3641 conditions per place. [2024-06-27 18:31:00,658 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 282 selfloop transitions, 93 changer transitions 0/383 dead transitions. [2024-06-27 18:31:00,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 383 transitions, 5049 flow [2024-06-27 18:31:00,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 18:31:00,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592074592074592 [2024-06-27 18:31:00,659 INFO L175 Difference]: Start difference. First operand has 356 places, 342 transitions, 4064 flow. Second operand 11 states and 197 transitions. [2024-06-27 18:31:00,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 383 transitions, 5049 flow [2024-06-27 18:31:02,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 383 transitions, 4869 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 18:31:02,369 INFO L231 Difference]: Finished difference. Result has 362 places, 344 transitions, 4112 flow [2024-06-27 18:31:02,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3884, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4112, PETRI_PLACES=362, PETRI_TRANSITIONS=344} [2024-06-27 18:31:02,369 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 319 predicate places. [2024-06-27 18:31:02,369 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 344 transitions, 4112 flow [2024-06-27 18:31:02,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:02,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:02,370 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 18:31:02,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:31:02,370 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:02,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:02,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1101297925, now seen corresponding path program 6 times [2024-06-27 18:31:02,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:02,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119131725] [2024-06-27 18:31:02,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:02,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:03,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:03,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119131725] [2024-06-27 18:31:03,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119131725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:03,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:03,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:03,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197745824] [2024-06-27 18:31:03,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:03,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:03,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:03,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:03,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:03,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:03,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 344 transitions, 4112 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:03,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:03,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:03,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:04,333 INFO L124 PetriNetUnfolderBase]: 2746/4701 cut-off events. [2024-06-27 18:31:04,334 INFO L125 PetriNetUnfolderBase]: For 369154/369154 co-relation queries the response was YES. [2024-06-27 18:31:04,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30209 conditions, 4701 events. 2746/4701 cut-off events. For 369154/369154 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 30682 event pairs, 472 based on Foata normal form. 3/4660 useless extension candidates. Maximal degree in co-relation 30032. Up to 1728 conditions per place. [2024-06-27 18:31:04,397 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 275 selfloop transitions, 126 changer transitions 0/409 dead transitions. [2024-06-27 18:31:04,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 409 transitions, 6188 flow [2024-06-27 18:31:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-27 18:31:04,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221445221445221 [2024-06-27 18:31:04,398 INFO L175 Difference]: Start difference. First operand has 362 places, 344 transitions, 4112 flow. Second operand 11 states and 224 transitions. [2024-06-27 18:31:04,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 409 transitions, 6188 flow [2024-06-27 18:31:06,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 409 transitions, 5983 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:06,112 INFO L231 Difference]: Finished difference. Result has 364 places, 348 transitions, 4228 flow [2024-06-27 18:31:06,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3907, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4228, PETRI_PLACES=364, PETRI_TRANSITIONS=348} [2024-06-27 18:31:06,112 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 321 predicate places. [2024-06-27 18:31:06,112 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 348 transitions, 4228 flow [2024-06-27 18:31:06,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:06,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:06,112 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 18:31:06,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:31:06,112 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:06,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:06,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1107733525, now seen corresponding path program 7 times [2024-06-27 18:31:06,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:06,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274235127] [2024-06-27 18:31:06,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:06,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:06,824 INFO 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 18:31:06,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:06,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274235127] [2024-06-27 18:31:06,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274235127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:06,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:06,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:06,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547651022] [2024-06-27 18:31:06,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:06,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:06,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:06,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:06,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:06,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:06,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 348 transitions, 4228 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:06,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:06,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:06,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:08,035 INFO L124 PetriNetUnfolderBase]: 2740/4729 cut-off events. [2024-06-27 18:31:08,035 INFO L125 PetriNetUnfolderBase]: For 355932/355932 co-relation queries the response was YES. [2024-06-27 18:31:08,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30342 conditions, 4729 events. 2740/4729 cut-off events. For 355932/355932 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 31079 event pairs, 471 based on Foata normal form. 3/4695 useless extension candidates. Maximal degree in co-relation 30164. Up to 1724 conditions per place. [2024-06-27 18:31:08,095 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 274 selfloop transitions, 125 changer transitions 0/407 dead transitions. [2024-06-27 18:31:08,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 407 transitions, 5772 flow [2024-06-27 18:31:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-27 18:31:08,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174825174825175 [2024-06-27 18:31:08,096 INFO L175 Difference]: Start difference. First operand has 364 places, 348 transitions, 4228 flow. Second operand 11 states and 222 transitions. [2024-06-27 18:31:08,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 407 transitions, 5772 flow [2024-06-27 18:31:09,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 407 transitions, 5478 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:09,767 INFO L231 Difference]: Finished difference. Result has 367 places, 348 transitions, 4189 flow [2024-06-27 18:31:09,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3934, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4189, PETRI_PLACES=367, PETRI_TRANSITIONS=348} [2024-06-27 18:31:09,768 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 324 predicate places. [2024-06-27 18:31:09,768 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 348 transitions, 4189 flow [2024-06-27 18:31:09,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:09,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:09,768 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 18:31:09,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:31:09,769 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:09,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:09,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1107554035, now seen corresponding path program 8 times [2024-06-27 18:31:09,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:09,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143661779] [2024-06-27 18:31:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:09,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:10,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143661779] [2024-06-27 18:31:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143661779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:10,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:10,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:10,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296940212] [2024-06-27 18:31:10,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:10,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:10,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:10,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:10,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:10,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 348 transitions, 4189 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:10,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:10,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:10,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:11,737 INFO L124 PetriNetUnfolderBase]: 2734/4729 cut-off events. [2024-06-27 18:31:11,737 INFO L125 PetriNetUnfolderBase]: For 338747/338747 co-relation queries the response was YES. [2024-06-27 18:31:11,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29770 conditions, 4729 events. 2734/4729 cut-off events. For 338747/338747 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 31121 event pairs, 486 based on Foata normal form. 3/4694 useless extension candidates. Maximal degree in co-relation 29591. Up to 1720 conditions per place. [2024-06-27 18:31:11,797 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 276 selfloop transitions, 123 changer transitions 0/407 dead transitions. [2024-06-27 18:31:11,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 407 transitions, 5737 flow [2024-06-27 18:31:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-27 18:31:11,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198135198135199 [2024-06-27 18:31:11,798 INFO L175 Difference]: Start difference. First operand has 367 places, 348 transitions, 4189 flow. Second operand 11 states and 223 transitions. [2024-06-27 18:31:11,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 407 transitions, 5737 flow [2024-06-27 18:31:13,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 407 transitions, 5478 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:13,443 INFO L231 Difference]: Finished difference. Result has 369 places, 348 transitions, 4181 flow [2024-06-27 18:31:13,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3930, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4181, PETRI_PLACES=369, PETRI_TRANSITIONS=348} [2024-06-27 18:31:13,443 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 326 predicate places. [2024-06-27 18:31:13,443 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 348 transitions, 4181 flow [2024-06-27 18:31:13,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:13,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:13,444 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 18:31:13,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:31:13,444 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:13,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:13,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1101304621, now seen corresponding path program 7 times [2024-06-27 18:31:13,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:13,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126911531] [2024-06-27 18:31:13,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:13,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:14,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:14,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126911531] [2024-06-27 18:31:14,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126911531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:14,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:14,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:14,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492667133] [2024-06-27 18:31:14,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:14,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:14,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:14,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:14,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:14,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:14,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 348 transitions, 4181 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:14,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:14,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:14,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:15,508 INFO L124 PetriNetUnfolderBase]: 2741/4632 cut-off events. [2024-06-27 18:31:15,508 INFO L125 PetriNetUnfolderBase]: For 323001/323001 co-relation queries the response was YES. [2024-06-27 18:31:15,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29620 conditions, 4632 events. 2741/4632 cut-off events. For 323001/323001 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 29744 event pairs, 566 based on Foata normal form. 1/4592 useless extension candidates. Maximal degree in co-relation 29440. Up to 3710 conditions per place. [2024-06-27 18:31:15,562 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 267 selfloop transitions, 130 changer transitions 0/405 dead transitions. [2024-06-27 18:31:15,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 405 transitions, 5522 flow [2024-06-27 18:31:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 18:31:15,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:31:15,563 INFO L175 Difference]: Start difference. First operand has 369 places, 348 transitions, 4181 flow. Second operand 11 states and 195 transitions. [2024-06-27 18:31:15,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 405 transitions, 5522 flow [2024-06-27 18:31:17,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 405 transitions, 5251 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 18:31:17,533 INFO L231 Difference]: Finished difference. Result has 373 places, 360 transitions, 4475 flow [2024-06-27 18:31:17,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3910, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4475, PETRI_PLACES=373, PETRI_TRANSITIONS=360} [2024-06-27 18:31:17,533 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 330 predicate places. [2024-06-27 18:31:17,534 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 360 transitions, 4475 flow [2024-06-27 18:31:17,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:17,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:17,534 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 18:31:17,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:31:17,534 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:17,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:17,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1101304435, now seen corresponding path program 9 times [2024-06-27 18:31:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:17,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096476715] [2024-06-27 18:31:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:18,237 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 18:31:18,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:18,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096476715] [2024-06-27 18:31:18,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096476715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:18,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:18,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:18,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530016851] [2024-06-27 18:31:18,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:18,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:18,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:18,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:18,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:18,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:18,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 360 transitions, 4475 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:18,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:18,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:18,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:19,546 INFO L124 PetriNetUnfolderBase]: 2735/4680 cut-off events. [2024-06-27 18:31:19,547 INFO L125 PetriNetUnfolderBase]: For 321227/321227 co-relation queries the response was YES. [2024-06-27 18:31:19,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29194 conditions, 4680 events. 2735/4680 cut-off events. For 321227/321227 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 30525 event pairs, 478 based on Foata normal form. 3/4638 useless extension candidates. Maximal degree in co-relation 29010. Up to 1731 conditions per place. [2024-06-27 18:31:19,594 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 284 selfloop transitions, 127 changer transitions 0/419 dead transitions. [2024-06-27 18:31:19,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 419 transitions, 6055 flow [2024-06-27 18:31:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:19,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-27 18:31:19,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-27 18:31:19,595 INFO L175 Difference]: Start difference. First operand has 373 places, 360 transitions, 4475 flow. Second operand 11 states and 221 transitions. [2024-06-27 18:31:19,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 419 transitions, 6055 flow [2024-06-27 18:31:21,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 419 transitions, 5823 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-27 18:31:21,503 INFO L231 Difference]: Finished difference. Result has 380 places, 360 transitions, 4502 flow [2024-06-27 18:31:21,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4243, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4502, PETRI_PLACES=380, PETRI_TRANSITIONS=360} [2024-06-27 18:31:21,504 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 337 predicate places. [2024-06-27 18:31:21,504 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 360 transitions, 4502 flow [2024-06-27 18:31:21,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:21,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:21,504 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 18:31:21,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:31:21,504 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:21,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:21,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1101067285, now seen corresponding path program 10 times [2024-06-27 18:31:21,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:21,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224632352] [2024-06-27 18:31:21,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:21,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:22,208 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 18:31:22,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:22,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224632352] [2024-06-27 18:31:22,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224632352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:22,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:22,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:22,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360085280] [2024-06-27 18:31:22,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:22,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:22,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:22,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:22,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:22,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:22,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 360 transitions, 4502 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:22,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:22,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:22,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:23,394 INFO L124 PetriNetUnfolderBase]: 2729/4662 cut-off events. [2024-06-27 18:31:23,394 INFO L125 PetriNetUnfolderBase]: For 305086/305086 co-relation queries the response was YES. [2024-06-27 18:31:23,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29169 conditions, 4662 events. 2729/4662 cut-off events. For 305086/305086 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 30306 event pairs, 493 based on Foata normal form. 3/4619 useless extension candidates. Maximal degree in co-relation 28984. Up to 1727 conditions per place. [2024-06-27 18:31:23,460 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 274 selfloop transitions, 133 changer transitions 0/415 dead transitions. [2024-06-27 18:31:23,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 415 transitions, 5822 flow [2024-06-27 18:31:23,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-27 18:31:23,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034965034965035 [2024-06-27 18:31:23,461 INFO L175 Difference]: Start difference. First operand has 380 places, 360 transitions, 4502 flow. Second operand 11 states and 216 transitions. [2024-06-27 18:31:23,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 415 transitions, 5822 flow [2024-06-27 18:31:25,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 415 transitions, 5538 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 18:31:25,088 INFO L231 Difference]: Finished difference. Result has 381 places, 360 transitions, 4489 flow [2024-06-27 18:31:25,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4218, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4489, PETRI_PLACES=381, PETRI_TRANSITIONS=360} [2024-06-27 18:31:25,088 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 338 predicate places. [2024-06-27 18:31:25,088 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 360 transitions, 4489 flow [2024-06-27 18:31:25,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:25,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:25,089 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 18:31:25,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:31:25,089 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:25,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:25,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1674374157, now seen corresponding path program 11 times [2024-06-27 18:31:25,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:25,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936312920] [2024-06-27 18:31:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:25,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:25,797 INFO 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 18:31:25,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:25,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936312920] [2024-06-27 18:31:25,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936312920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:25,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:25,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:25,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258271924] [2024-06-27 18:31:25,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:25,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:25,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:25,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:25,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:25,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:25,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 360 transitions, 4489 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:25,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:25,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:25,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:27,041 INFO L124 PetriNetUnfolderBase]: 2879/4871 cut-off events. [2024-06-27 18:31:27,041 INFO L125 PetriNetUnfolderBase]: For 380336/380336 co-relation queries the response was YES. [2024-06-27 18:31:27,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31714 conditions, 4871 events. 2879/4871 cut-off events. For 380336/380336 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 31722 event pairs, 571 based on Foata normal form. 3/4822 useless extension candidates. Maximal degree in co-relation 31528. Up to 1835 conditions per place. [2024-06-27 18:31:27,104 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 287 selfloop transitions, 132 changer transitions 0/427 dead transitions. [2024-06-27 18:31:27,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 427 transitions, 6731 flow [2024-06-27 18:31:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:27,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-27 18:31:27,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174825174825175 [2024-06-27 18:31:27,105 INFO L175 Difference]: Start difference. First operand has 381 places, 360 transitions, 4489 flow. Second operand 11 states and 222 transitions. [2024-06-27 18:31:27,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 427 transitions, 6731 flow [2024-06-27 18:31:29,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 427 transitions, 6433 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 18:31:29,293 INFO L231 Difference]: Finished difference. Result has 381 places, 368 transitions, 4612 flow [2024-06-27 18:31:29,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4207, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4612, PETRI_PLACES=381, PETRI_TRANSITIONS=368} [2024-06-27 18:31:29,293 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 338 predicate places. [2024-06-27 18:31:29,293 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 368 transitions, 4612 flow [2024-06-27 18:31:29,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:29,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:29,293 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 18:31:29,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:31:29,294 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:29,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:29,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1452722607, now seen corresponding path program 12 times [2024-06-27 18:31:29,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:29,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894335548] [2024-06-27 18:31:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:29,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:30,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:30,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894335548] [2024-06-27 18:31:30,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894335548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:30,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:30,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:30,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814517155] [2024-06-27 18:31:30,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:30,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:30,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:30,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:30,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:30,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:30,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 368 transitions, 4612 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:30,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:30,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:30,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:31,422 INFO L124 PetriNetUnfolderBase]: 2951/5160 cut-off events. [2024-06-27 18:31:31,422 INFO L125 PetriNetUnfolderBase]: For 411334/411334 co-relation queries the response was YES. [2024-06-27 18:31:31,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33034 conditions, 5160 events. 2951/5160 cut-off events. For 411334/411334 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 34869 event pairs, 664 based on Foata normal form. 3/5125 useless extension candidates. Maximal degree in co-relation 32847. Up to 1887 conditions per place. [2024-06-27 18:31:31,491 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 297 selfloop transitions, 129 changer transitions 0/434 dead transitions. [2024-06-27 18:31:31,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 434 transitions, 6812 flow [2024-06-27 18:31:31,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 228 transitions. [2024-06-27 18:31:31,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314685314685315 [2024-06-27 18:31:31,492 INFO L175 Difference]: Start difference. First operand has 381 places, 368 transitions, 4612 flow. Second operand 11 states and 228 transitions. [2024-06-27 18:31:31,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 434 transitions, 6812 flow [2024-06-27 18:31:34,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 434 transitions, 6619 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:31:34,009 INFO L231 Difference]: Finished difference. Result has 387 places, 372 transitions, 4758 flow [2024-06-27 18:31:34,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4431, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4758, PETRI_PLACES=387, PETRI_TRANSITIONS=372} [2024-06-27 18:31:34,010 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 344 predicate places. [2024-06-27 18:31:34,010 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 372 transitions, 4758 flow [2024-06-27 18:31:34,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:34,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:34,010 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 18:31:34,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:31:34,010 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:34,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:34,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1674604797, now seen corresponding path program 13 times [2024-06-27 18:31:34,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:34,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107719311] [2024-06-27 18:31:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:34,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:34,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:34,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107719311] [2024-06-27 18:31:34,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107719311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:34,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:34,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:34,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958120542] [2024-06-27 18:31:34,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:34,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:34,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:34,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:34,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:34,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:34,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 372 transitions, 4758 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:34,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:34,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:34,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:36,155 INFO L124 PetriNetUnfolderBase]: 2984/5064 cut-off events. [2024-06-27 18:31:36,155 INFO L125 PetriNetUnfolderBase]: For 418271/418271 co-relation queries the response was YES. [2024-06-27 18:31:36,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32908 conditions, 5064 events. 2984/5064 cut-off events. For 418271/418271 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 33301 event pairs, 611 based on Foata normal form. 3/5013 useless extension candidates. Maximal degree in co-relation 32720. Up to 1911 conditions per place. [2024-06-27 18:31:36,220 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 288 selfloop transitions, 137 changer transitions 0/433 dead transitions. [2024-06-27 18:31:36,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 433 transitions, 6912 flow [2024-06-27 18:31:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:36,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-27 18:31:36,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198135198135199 [2024-06-27 18:31:36,221 INFO L175 Difference]: Start difference. First operand has 387 places, 372 transitions, 4758 flow. Second operand 11 states and 223 transitions. [2024-06-27 18:31:36,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 433 transitions, 6912 flow [2024-06-27 18:31:38,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 433 transitions, 6591 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:38,686 INFO L231 Difference]: Finished difference. Result has 390 places, 374 transitions, 4752 flow [2024-06-27 18:31:38,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4441, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4752, PETRI_PLACES=390, PETRI_TRANSITIONS=374} [2024-06-27 18:31:38,687 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 347 predicate places. [2024-06-27 18:31:38,687 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 374 transitions, 4752 flow [2024-06-27 18:31:38,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:38,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:38,687 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 18:31:38,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:31:38,687 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:38,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:38,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1682648367, now seen corresponding path program 14 times [2024-06-27 18:31:38,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:38,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329924520] [2024-06-27 18:31:38,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:38,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:39,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:39,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329924520] [2024-06-27 18:31:39,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329924520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:39,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:39,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:39,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661416377] [2024-06-27 18:31:39,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:39,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:39,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:39,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:39,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:39,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:39,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 374 transitions, 4752 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:39,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:39,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:39,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:40,802 INFO L124 PetriNetUnfolderBase]: 2978/5019 cut-off events. [2024-06-27 18:31:40,803 INFO L125 PetriNetUnfolderBase]: For 399295/399295 co-relation queries the response was YES. [2024-06-27 18:31:40,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32405 conditions, 5019 events. 2978/5019 cut-off events. For 399295/399295 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 32738 event pairs, 635 based on Foata normal form. 3/4967 useless extension candidates. Maximal degree in co-relation 32216. Up to 1907 conditions per place. [2024-06-27 18:31:40,862 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 267 selfloop transitions, 153 changer transitions 0/428 dead transitions. [2024-06-27 18:31:40,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 428 transitions, 6352 flow [2024-06-27 18:31:40,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:40,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:40,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 18:31:40,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011655011655012 [2024-06-27 18:31:40,863 INFO L175 Difference]: Start difference. First operand has 390 places, 374 transitions, 4752 flow. Second operand 11 states and 215 transitions. [2024-06-27 18:31:40,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 428 transitions, 6352 flow [2024-06-27 18:31:43,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 428 transitions, 6055 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:43,207 INFO L231 Difference]: Finished difference. Result has 393 places, 374 transitions, 4766 flow [2024-06-27 18:31:43,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4455, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4766, PETRI_PLACES=393, PETRI_TRANSITIONS=374} [2024-06-27 18:31:43,208 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 350 predicate places. [2024-06-27 18:31:43,209 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 374 transitions, 4766 flow [2024-06-27 18:31:43,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:43,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:43,209 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 18:31:43,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:31:43,209 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:43,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:43,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1682956197, now seen corresponding path program 1 times [2024-06-27 18:31:43,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:43,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295887751] [2024-06-27 18:31:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:43,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:44,228 INFO 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 18:31:44,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:44,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295887751] [2024-06-27 18:31:44,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295887751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:44,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:44,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:44,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570382975] [2024-06-27 18:31:44,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:44,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:44,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:44,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:44,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:44,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:44,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 374 transitions, 4766 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 18:31:44,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:44,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:44,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:45,488 INFO L124 PetriNetUnfolderBase]: 2653/4548 cut-off events. [2024-06-27 18:31:45,488 INFO L125 PetriNetUnfolderBase]: For 436507/436551 co-relation queries the response was YES. [2024-06-27 18:31:45,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30190 conditions, 4548 events. 2653/4548 cut-off events. For 436507/436551 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 29936 event pairs, 539 based on Foata normal form. 31/4481 useless extension candidates. Maximal degree in co-relation 30000. Up to 3894 conditions per place. [2024-06-27 18:31:45,537 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 351 selfloop transitions, 33 changer transitions 0/418 dead transitions. [2024-06-27 18:31:45,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 418 transitions, 5765 flow [2024-06-27 18:31:45,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:31:45,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794871794871795 [2024-06-27 18:31:45,538 INFO L175 Difference]: Start difference. First operand has 393 places, 374 transitions, 4766 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:31:45,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 418 transitions, 5765 flow [2024-06-27 18:31:47,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 418 transitions, 5496 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 18:31:47,725 INFO L231 Difference]: Finished difference. Result has 394 places, 377 transitions, 4605 flow [2024-06-27 18:31:47,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4499, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4605, PETRI_PLACES=394, PETRI_TRANSITIONS=377} [2024-06-27 18:31:47,725 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 351 predicate places. [2024-06-27 18:31:47,725 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 377 transitions, 4605 flow [2024-06-27 18:31:47,725 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 18:31:47,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:47,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:47,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:31:47,726 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:47,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:47,726 INFO L85 PathProgramCache]: Analyzing trace with hash -89082725, now seen corresponding path program 15 times [2024-06-27 18:31:47,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:47,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802110779] [2024-06-27 18:31:47,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:47,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:48,434 INFO 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 18:31:48,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:48,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802110779] [2024-06-27 18:31:48,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802110779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:48,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:48,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:48,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239053734] [2024-06-27 18:31:48,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:48,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:48,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:48,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:48,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:48,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:48,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 377 transitions, 4605 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:48,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:48,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:48,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:49,844 INFO L124 PetriNetUnfolderBase]: 2988/5048 cut-off events. [2024-06-27 18:31:49,844 INFO L125 PetriNetUnfolderBase]: For 385403/385403 co-relation queries the response was YES. [2024-06-27 18:31:49,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31664 conditions, 5048 events. 2988/5048 cut-off events. For 385403/385403 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 32991 event pairs, 576 based on Foata normal form. 3/4997 useless extension candidates. Maximal degree in co-relation 31472. Up to 1931 conditions per place. [2024-06-27 18:31:49,920 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 285 selfloop transitions, 141 changer transitions 0/434 dead transitions. [2024-06-27 18:31:49,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 434 transitions, 6249 flow [2024-06-27 18:31:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-27 18:31:49,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104895104895105 [2024-06-27 18:31:49,921 INFO L175 Difference]: Start difference. First operand has 394 places, 377 transitions, 4605 flow. Second operand 11 states and 219 transitions. [2024-06-27 18:31:49,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 434 transitions, 6249 flow [2024-06-27 18:31:52,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 434 transitions, 6157 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:31:52,496 INFO L231 Difference]: Finished difference. Result has 398 places, 377 transitions, 4800 flow [2024-06-27 18:31:52,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4513, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4800, PETRI_PLACES=398, PETRI_TRANSITIONS=377} [2024-06-27 18:31:52,496 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 355 predicate places. [2024-06-27 18:31:52,496 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 377 transitions, 4800 flow [2024-06-27 18:31:52,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:52,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:52,496 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 18:31:52,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:31:52,496 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:52,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1319237547, now seen corresponding path program 8 times [2024-06-27 18:31:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:52,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202840446] [2024-06-27 18:31:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:52,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:53,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:53,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202840446] [2024-06-27 18:31:53,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202840446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:53,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:53,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:53,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040707445] [2024-06-27 18:31:53,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:53,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:53,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:53,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:53,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:53,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 377 transitions, 4800 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:53,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:53,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:53,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:54,638 INFO L124 PetriNetUnfolderBase]: 2997/5040 cut-off events. [2024-06-27 18:31:54,638 INFO L125 PetriNetUnfolderBase]: For 377070/377070 co-relation queries the response was YES. [2024-06-27 18:31:54,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32540 conditions, 5040 events. 2997/5040 cut-off events. For 377070/377070 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 32802 event pairs, 605 based on Foata normal form. 1/4995 useless extension candidates. Maximal degree in co-relation 32347. Up to 4148 conditions per place. [2024-06-27 18:31:54,708 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 311 selfloop transitions, 97 changer transitions 0/416 dead transitions. [2024-06-27 18:31:54,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 416 transitions, 5865 flow [2024-06-27 18:31:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:54,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:54,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 18:31:54,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44988344988344986 [2024-06-27 18:31:54,709 INFO L175 Difference]: Start difference. First operand has 398 places, 377 transitions, 4800 flow. Second operand 11 states and 193 transitions. [2024-06-27 18:31:54,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 416 transitions, 5865 flow [2024-06-27 18:31:57,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 416 transitions, 5578 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:31:57,092 INFO L231 Difference]: Finished difference. Result has 399 places, 379 transitions, 4769 flow [2024-06-27 18:31:57,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4513, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4769, PETRI_PLACES=399, PETRI_TRANSITIONS=379} [2024-06-27 18:31:57,092 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 356 predicate places. [2024-06-27 18:31:57,092 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 379 transitions, 4769 flow [2024-06-27 18:31:57,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:57,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:57,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:57,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:31:57,093 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:57,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:57,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1446293517, now seen corresponding path program 16 times [2024-06-27 18:31:57,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:57,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511524333] [2024-06-27 18:31:57,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:57,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:57,797 INFO 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 18:31:57,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:57,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511524333] [2024-06-27 18:31:57,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511524333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:57,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:57,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:57,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57846681] [2024-06-27 18:31:57,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:57,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:57,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:57,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:57,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:57,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:31:57,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 379 transitions, 4769 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:31:57,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:57,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:31:57,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:59,224 INFO L124 PetriNetUnfolderBase]: 3030/5278 cut-off events. [2024-06-27 18:31:59,224 INFO L125 PetriNetUnfolderBase]: For 398874/398874 co-relation queries the response was YES. [2024-06-27 18:31:59,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32614 conditions, 5278 events. 3030/5278 cut-off events. For 398874/398874 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 35632 event pairs, 615 based on Foata normal form. 3/5244 useless extension candidates. Maximal degree in co-relation 32420. Up to 1969 conditions per place. [2024-06-27 18:31:59,297 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 287 selfloop transitions, 143 changer transitions 0/438 dead transitions. [2024-06-27 18:31:59,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 438 transitions, 6461 flow [2024-06-27 18:31:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:59,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-27 18:31:59,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-27 18:31:59,298 INFO L175 Difference]: Start difference. First operand has 399 places, 379 transitions, 4769 flow. Second operand 11 states and 220 transitions. [2024-06-27 18:31:59,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 438 transitions, 6461 flow [2024-06-27 18:32:01,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 438 transitions, 6224 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 18:32:01,511 INFO L231 Difference]: Finished difference. Result has 401 places, 381 transitions, 4855 flow [2024-06-27 18:32:01,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4532, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4855, PETRI_PLACES=401, PETRI_TRANSITIONS=381} [2024-06-27 18:32:01,512 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 358 predicate places. [2024-06-27 18:32:01,512 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 381 transitions, 4855 flow [2024-06-27 18:32:01,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:01,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:01,512 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 18:32:01,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:32:01,512 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:01,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:01,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1452959757, now seen corresponding path program 17 times [2024-06-27 18:32:01,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:01,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346006228] [2024-06-27 18:32:01,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:01,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:02,231 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 18:32:02,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:02,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346006228] [2024-06-27 18:32:02,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346006228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:02,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:02,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:02,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943511772] [2024-06-27 18:32:02,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:02,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:02,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:02,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:02,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:02,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:32:02,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 381 transitions, 4855 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:02,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:02,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:32:02,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:03,681 INFO L124 PetriNetUnfolderBase]: 3063/5347 cut-off events. [2024-06-27 18:32:03,681 INFO L125 PetriNetUnfolderBase]: For 407073/407073 co-relation queries the response was YES. [2024-06-27 18:32:03,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33547 conditions, 5347 events. 3063/5347 cut-off events. For 407073/407073 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 36333 event pairs, 709 based on Foata normal form. 3/5310 useless extension candidates. Maximal degree in co-relation 33352. Up to 1993 conditions per place. [2024-06-27 18:32:03,759 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 294 selfloop transitions, 138 changer transitions 0/440 dead transitions. [2024-06-27 18:32:03,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 440 transitions, 6557 flow [2024-06-27 18:32:03,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:03,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-27 18:32:03,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174825174825175 [2024-06-27 18:32:03,760 INFO L175 Difference]: Start difference. First operand has 401 places, 381 transitions, 4855 flow. Second operand 11 states and 222 transitions. [2024-06-27 18:32:03,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 440 transitions, 6557 flow [2024-06-27 18:32:06,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 440 transitions, 6281 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:32:06,092 INFO L231 Difference]: Finished difference. Result has 404 places, 383 transitions, 4894 flow [2024-06-27 18:32:06,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4581, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4894, PETRI_PLACES=404, PETRI_TRANSITIONS=383} [2024-06-27 18:32:06,092 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 361 predicate places. [2024-06-27 18:32:06,092 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 383 transitions, 4894 flow [2024-06-27 18:32:06,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:06,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:06,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:06,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:32:06,093 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:06,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1452722421, now seen corresponding path program 9 times [2024-06-27 18:32:06,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:06,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062581921] [2024-06-27 18:32:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:06,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:06,968 INFO 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 18:32:06,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:06,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062581921] [2024-06-27 18:32:06,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062581921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:06,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:06,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:06,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989553454] [2024-06-27 18:32:06,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:06,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:06,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:07,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:32:07,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 383 transitions, 4894 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:07,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:07,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:32:07,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:08,221 INFO L124 PetriNetUnfolderBase]: 3085/5190 cut-off events. [2024-06-27 18:32:08,222 INFO L125 PetriNetUnfolderBase]: For 396322/396322 co-relation queries the response was YES. [2024-06-27 18:32:08,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33677 conditions, 5190 events. 3085/5190 cut-off events. For 396322/396322 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 34002 event pairs, 643 based on Foata normal form. 1/5145 useless extension candidates. Maximal degree in co-relation 33481. Up to 4238 conditions per place. [2024-06-27 18:32:08,292 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 307 selfloop transitions, 129 changer transitions 0/444 dead transitions. [2024-06-27 18:32:08,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 444 transitions, 6430 flow [2024-06-27 18:32:08,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 18:32:08,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568764568764569 [2024-06-27 18:32:08,293 INFO L175 Difference]: Start difference. First operand has 404 places, 383 transitions, 4894 flow. Second operand 11 states and 196 transitions. [2024-06-27 18:32:08,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 444 transitions, 6430 flow [2024-06-27 18:32:10,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 444 transitions, 6088 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 18:32:10,923 INFO L231 Difference]: Finished difference. Result has 410 places, 399 transitions, 5219 flow [2024-06-27 18:32:10,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4552, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5219, PETRI_PLACES=410, PETRI_TRANSITIONS=399} [2024-06-27 18:32:10,924 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 367 predicate places. [2024-06-27 18:32:10,924 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 399 transitions, 5219 flow [2024-06-27 18:32:10,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:10,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:10,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:10,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:32:10,925 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:10,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1452729117, now seen corresponding path program 18 times [2024-06-27 18:32:10,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:10,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580455596] [2024-06-27 18:32:10,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:10,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:11,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:11,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580455596] [2024-06-27 18:32:11,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580455596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:11,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:11,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:11,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230331320] [2024-06-27 18:32:11,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:11,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:11,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:11,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:11,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:11,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:32:11,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 399 transitions, 5219 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:11,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:11,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:32:11,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:13,057 INFO L124 PetriNetUnfolderBase]: 3079/5400 cut-off events. [2024-06-27 18:32:13,058 INFO L125 PetriNetUnfolderBase]: For 392989/392989 co-relation queries the response was YES. [2024-06-27 18:32:13,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33275 conditions, 5400 events. 3079/5400 cut-off events. For 392989/392989 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 36952 event pairs, 683 based on Foata normal form. 3/5363 useless extension candidates. Maximal degree in co-relation 33074. Up to 2029 conditions per place. [2024-06-27 18:32:13,129 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 316 selfloop transitions, 135 changer transitions 0/459 dead transitions. [2024-06-27 18:32:13,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 459 transitions, 6947 flow [2024-06-27 18:32:13,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 227 transitions. [2024-06-27 18:32:13,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291375291375291 [2024-06-27 18:32:13,130 INFO L175 Difference]: Start difference. First operand has 410 places, 399 transitions, 5219 flow. Second operand 11 states and 227 transitions. [2024-06-27 18:32:13,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 459 transitions, 6947 flow [2024-06-27 18:32:15,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 459 transitions, 6704 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-06-27 18:32:15,455 INFO L231 Difference]: Finished difference. Result has 418 places, 399 transitions, 5251 flow [2024-06-27 18:32:15,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4976, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5251, PETRI_PLACES=418, PETRI_TRANSITIONS=399} [2024-06-27 18:32:15,455 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 375 predicate places. [2024-06-27 18:32:15,455 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 399 transitions, 5251 flow [2024-06-27 18:32:15,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:15,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:15,456 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 18:32:15,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:32:15,456 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:15,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:15,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1446288681, now seen corresponding path program 10 times [2024-06-27 18:32:15,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:15,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537269681] [2024-06-27 18:32:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:15,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:16,412 INFO 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 18:32:16,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:16,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537269681] [2024-06-27 18:32:16,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537269681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:16,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:16,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:16,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30616705] [2024-06-27 18:32:16,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:16,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:16,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:16,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:16,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:16,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:32:16,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 399 transitions, 5251 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:16,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:16,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:32:16,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:17,859 INFO L124 PetriNetUnfolderBase]: 3100/5218 cut-off events. [2024-06-27 18:32:17,859 INFO L125 PetriNetUnfolderBase]: For 392086/392086 co-relation queries the response was YES. [2024-06-27 18:32:17,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33917 conditions, 5218 events. 3100/5218 cut-off events. For 392086/392086 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 34261 event pairs, 623 based on Foata normal form. 1/5172 useless extension candidates. Maximal degree in co-relation 33715. Up to 4272 conditions per place. [2024-06-27 18:32:17,931 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 338 selfloop transitions, 101 changer transitions 0/447 dead transitions. [2024-06-27 18:32:17,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 447 transitions, 6750 flow [2024-06-27 18:32:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:32:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:32:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 211 transitions. [2024-06-27 18:32:17,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45085470085470086 [2024-06-27 18:32:17,932 INFO L175 Difference]: Start difference. First operand has 418 places, 399 transitions, 5251 flow. Second operand 12 states and 211 transitions. [2024-06-27 18:32:17,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 447 transitions, 6750 flow [2024-06-27 18:32:21,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 447 transitions, 6474 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:32:21,006 INFO L231 Difference]: Finished difference. Result has 421 places, 405 transitions, 5336 flow [2024-06-27 18:32:21,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4975, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5336, PETRI_PLACES=421, PETRI_TRANSITIONS=405} [2024-06-27 18:32:21,006 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 378 predicate places. [2024-06-27 18:32:21,006 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 405 transitions, 5336 flow [2024-06-27 18:32:21,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:21,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:21,007 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 18:32:21,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:32:21,007 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:21,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:21,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1446466497, now seen corresponding path program 19 times [2024-06-27 18:32:21,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:21,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318553340] [2024-06-27 18:32:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:21,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:21,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:21,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318553340] [2024-06-27 18:32:21,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318553340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:21,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:21,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:21,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27851426] [2024-06-27 18:32:21,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:21,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:21,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:21,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:32:21,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 405 transitions, 5336 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:21,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:21,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:32:21,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:23,266 INFO L124 PetriNetUnfolderBase]: 3133/5453 cut-off events. [2024-06-27 18:32:23,267 INFO L125 PetriNetUnfolderBase]: For 415685/415685 co-relation queries the response was YES. [2024-06-27 18:32:23,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34065 conditions, 5453 events. 3133/5453 cut-off events. For 415685/415685 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 37076 event pairs, 646 based on Foata normal form. 3/5416 useless extension candidates. Maximal degree in co-relation 33861. Up to 2086 conditions per place. [2024-06-27 18:32:23,346 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 319 selfloop transitions, 140 changer transitions 0/467 dead transitions. [2024-06-27 18:32:23,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 467 transitions, 7120 flow [2024-06-27 18:32:23,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-06-27 18:32:23,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244755244755245 [2024-06-27 18:32:23,347 INFO L175 Difference]: Start difference. First operand has 421 places, 405 transitions, 5336 flow. Second operand 11 states and 225 transitions. [2024-06-27 18:32:23,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 467 transitions, 7120 flow [2024-06-27 18:32:25,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 467 transitions, 6928 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 18:32:25,996 INFO L231 Difference]: Finished difference. Result has 424 places, 407 transitions, 5461 flow [2024-06-27 18:32:25,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5144, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5461, PETRI_PLACES=424, PETRI_TRANSITIONS=407} [2024-06-27 18:32:25,997 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 381 predicate places. [2024-06-27 18:32:25,997 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 407 transitions, 5461 flow [2024-06-27 18:32:25,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:25,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:25,997 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 18:32:25,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:32:25,998 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:25,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:25,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1446466311, now seen corresponding path program 11 times [2024-06-27 18:32:25,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:25,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079118241] [2024-06-27 18:32:25,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:25,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:26,872 INFO 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 18:32:26,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:26,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079118241] [2024-06-27 18:32:26,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079118241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:26,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:26,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:26,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523909035] [2024-06-27 18:32:26,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:26,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:26,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:26,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:27,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:32:27,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 407 transitions, 5461 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:27,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:27,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:32:27,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:28,349 INFO L124 PetriNetUnfolderBase]: 3133/5270 cut-off events. [2024-06-27 18:32:28,349 INFO L125 PetriNetUnfolderBase]: For 394630/394630 co-relation queries the response was YES. [2024-06-27 18:32:28,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34492 conditions, 5270 events. 3133/5270 cut-off events. For 394630/394630 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 34635 event pairs, 643 based on Foata normal form. 1/5223 useless extension candidates. Maximal degree in co-relation 34286. Up to 4314 conditions per place. [2024-06-27 18:32:28,423 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 314 selfloop transitions, 135 changer transitions 0/457 dead transitions. [2024-06-27 18:32:28,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 457 transitions, 6845 flow [2024-06-27 18:32:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 18:32:28,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:32:28,424 INFO L175 Difference]: Start difference. First operand has 424 places, 407 transitions, 5461 flow. Second operand 11 states and 195 transitions. [2024-06-27 18:32:28,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 457 transitions, 6845 flow [2024-06-27 18:32:31,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 457 transitions, 6486 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 18:32:31,487 INFO L231 Difference]: Finished difference. Result has 428 places, 414 transitions, 5573 flow [2024-06-27 18:32:31,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5102, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5573, PETRI_PLACES=428, PETRI_TRANSITIONS=414} [2024-06-27 18:32:31,488 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 385 predicate places. [2024-06-27 18:32:31,488 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 414 transitions, 5573 flow [2024-06-27 18:32:31,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:31,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:31,488 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 18:32:31,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:32:31,488 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:31,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:31,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1547132001, now seen corresponding path program 20 times [2024-06-27 18:32:31,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:31,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970667716] [2024-06-27 18:32:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:31,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:32,201 INFO 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 18:32:32,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:32,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970667716] [2024-06-27 18:32:32,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970667716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:32,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:32,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:32,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294902325] [2024-06-27 18:32:32,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:32,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:32,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:32,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:32,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:32,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:32:32,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 414 transitions, 5573 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:32,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:32,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:32:32,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:33,788 INFO L124 PetriNetUnfolderBase]: 3127/5436 cut-off events. [2024-06-27 18:32:33,789 INFO L125 PetriNetUnfolderBase]: For 388490/388490 co-relation queries the response was YES. [2024-06-27 18:32:33,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33708 conditions, 5436 events. 3127/5436 cut-off events. For 388490/388490 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 36929 event pairs, 645 based on Foata normal form. 3/5400 useless extension candidates. Maximal degree in co-relation 33498. Up to 2083 conditions per place. [2024-06-27 18:32:33,863 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 321 selfloop transitions, 141 changer transitions 0/470 dead transitions. [2024-06-27 18:32:33,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 470 transitions, 7051 flow [2024-06-27 18:32:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-27 18:32:33,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-27 18:32:33,864 INFO L175 Difference]: Start difference. First operand has 428 places, 414 transitions, 5573 flow. Second operand 11 states and 220 transitions. [2024-06-27 18:32:33,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 470 transitions, 7051 flow [2024-06-27 18:32:36,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 470 transitions, 6733 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-27 18:32:36,271 INFO L231 Difference]: Finished difference. Result has 434 places, 414 transitions, 5542 flow [2024-06-27 18:32:36,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5255, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5542, PETRI_PLACES=434, PETRI_TRANSITIONS=414} [2024-06-27 18:32:36,271 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 391 predicate places. [2024-06-27 18:32:36,271 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 414 transitions, 5542 flow [2024-06-27 18:32:36,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:36,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:36,272 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 18:32:36,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:32:36,272 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:36,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:36,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1547316451, now seen corresponding path program 5 times [2024-06-27 18:32:36,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:36,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528463] [2024-06-27 18:32:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:36,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:37,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:37,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528463] [2024-06-27 18:32:37,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:37,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:37,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3244661] [2024-06-27 18:32:37,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:37,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:37,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:37,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:37,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:37,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:32:37,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 414 transitions, 5542 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 18:32:37,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:37,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:32:37,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:38,766 INFO L124 PetriNetUnfolderBase]: 3006/5200 cut-off events. [2024-06-27 18:32:38,766 INFO L125 PetriNetUnfolderBase]: For 386986/386990 co-relation queries the response was YES. [2024-06-27 18:32:38,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33423 conditions, 5200 events. 3006/5200 cut-off events. For 386986/386990 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 35157 event pairs, 623 based on Foata normal form. 2/5153 useless extension candidates. Maximal degree in co-relation 33212. Up to 4275 conditions per place. [2024-06-27 18:32:38,840 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 324 selfloop transitions, 51 changer transitions 0/453 dead transitions. [2024-06-27 18:32:38,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 453 transitions, 6528 flow [2024-06-27 18:32:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 18:32:38,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 18:32:38,841 INFO L175 Difference]: Start difference. First operand has 434 places, 414 transitions, 5542 flow. Second operand 11 states and 198 transitions. [2024-06-27 18:32:38,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 453 transitions, 6528 flow [2024-06-27 18:32:41,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 453 transitions, 6223 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:32:41,706 INFO L231 Difference]: Finished difference. Result has 434 places, 415 transitions, 5383 flow [2024-06-27 18:32:41,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5237, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5383, PETRI_PLACES=434, PETRI_TRANSITIONS=415} [2024-06-27 18:32:41,707 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 391 predicate places. [2024-06-27 18:32:41,707 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 415 transitions, 5383 flow [2024-06-27 18:32:41,707 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 18:32:41,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:41,707 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 18:32:41,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:32:41,707 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:41,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:41,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1158083649, now seen corresponding path program 12 times [2024-06-27 18:32:41,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:41,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783087042] [2024-06-27 18:32:41,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:41,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:42,507 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 18:32:42,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:42,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783087042] [2024-06-27 18:32:42,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783087042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:42,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:42,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:42,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520788095] [2024-06-27 18:32:42,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:42,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:42,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:42,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:42,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:42,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:32:42,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 415 transitions, 5383 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:42,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:42,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:32:42,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:44,106 INFO L124 PetriNetUnfolderBase]: 3153/5347 cut-off events. [2024-06-27 18:32:44,106 INFO L125 PetriNetUnfolderBase]: For 380498/380498 co-relation queries the response was YES. [2024-06-27 18:32:44,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33765 conditions, 5347 events. 3153/5347 cut-off events. For 380498/380498 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 35570 event pairs, 853 based on Foata normal form. 1/5281 useless extension candidates. Maximal degree in co-relation 33553. Up to 4923 conditions per place. [2024-06-27 18:32:44,176 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 417 selfloop transitions, 32 changer transitions 0/457 dead transitions. [2024-06-27 18:32:44,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 457 transitions, 6646 flow [2024-06-27 18:32:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 18:32:44,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125874125874126 [2024-06-27 18:32:44,177 INFO L175 Difference]: Start difference. First operand has 434 places, 415 transitions, 5383 flow. Second operand 11 states and 177 transitions. [2024-06-27 18:32:44,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 457 transitions, 6646 flow [2024-06-27 18:32:47,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 457 transitions, 6510 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:32:47,336 INFO L231 Difference]: Finished difference. Result has 440 places, 425 transitions, 5570 flow [2024-06-27 18:32:47,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5247, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5570, PETRI_PLACES=440, PETRI_TRANSITIONS=425} [2024-06-27 18:32:47,336 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 397 predicate places. [2024-06-27 18:32:47,336 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 425 transitions, 5570 flow [2024-06-27 18:32:47,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:47,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:47,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:47,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:32:47,336 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:47,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:47,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1018894299, now seen corresponding path program 2 times [2024-06-27 18:32:47,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:47,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433579734] [2024-06-27 18:32:47,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:47,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:48,425 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 18:32:48,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:48,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433579734] [2024-06-27 18:32:48,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433579734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:48,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:48,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:48,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507678224] [2024-06-27 18:32:48,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:48,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:48,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:48,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:48,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:48,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:32:48,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 425 transitions, 5570 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 18:32:48,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:48,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:32:48,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:49,983 INFO L124 PetriNetUnfolderBase]: 2828/4972 cut-off events. [2024-06-27 18:32:49,984 INFO L125 PetriNetUnfolderBase]: For 451351/451382 co-relation queries the response was YES. [2024-06-27 18:32:50,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31578 conditions, 4972 events. 2828/4972 cut-off events. For 451351/451382 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 33991 event pairs, 638 based on Foata normal form. 33/4915 useless extension candidates. Maximal degree in co-relation 31361. Up to 4330 conditions per place. [2024-06-27 18:32:50,059 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 404 selfloop transitions, 19 changer transitions 0/460 dead transitions. [2024-06-27 18:32:50,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 460 transitions, 6578 flow [2024-06-27 18:32:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:32:50,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-27 18:32:50,060 INFO L175 Difference]: Start difference. First operand has 440 places, 425 transitions, 5570 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:32:50,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 460 transitions, 6578 flow [2024-06-27 18:32:52,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 460 transitions, 6453 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-27 18:32:52,670 INFO L231 Difference]: Finished difference. Result has 447 places, 428 transitions, 5526 flow [2024-06-27 18:32:52,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5445, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5526, PETRI_PLACES=447, PETRI_TRANSITIONS=428} [2024-06-27 18:32:52,670 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 404 predicate places. [2024-06-27 18:32:52,670 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 428 transitions, 5526 flow [2024-06-27 18:32:52,670 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 18:32:52,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:52,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:52,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:32:52,670 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:52,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1518072057, now seen corresponding path program 21 times [2024-06-27 18:32:52,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:52,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698755587] [2024-06-27 18:32:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:52,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:53,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:53,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698755587] [2024-06-27 18:32:53,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698755587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:53,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:53,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:53,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11498505] [2024-06-27 18:32:53,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:53,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:53,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:53,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:53,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:53,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:32:53,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 428 transitions, 5526 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:53,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:53,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:32:53,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:55,062 INFO L124 PetriNetUnfolderBase]: 3280/5533 cut-off events. [2024-06-27 18:32:55,062 INFO L125 PetriNetUnfolderBase]: For 471606/471606 co-relation queries the response was YES. [2024-06-27 18:32:55,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36068 conditions, 5533 events. 3280/5533 cut-off events. For 471606/471606 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 36948 event pairs, 768 based on Foata normal form. 3/5474 useless extension candidates. Maximal degree in co-relation 35848. Up to 4614 conditions per place. [2024-06-27 18:32:55,142 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 435 selfloop transitions, 40 changer transitions 0/483 dead transitions. [2024-06-27 18:32:55,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 483 transitions, 7382 flow [2024-06-27 18:32:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:32:55,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662004662004662 [2024-06-27 18:32:55,143 INFO L175 Difference]: Start difference. First operand has 447 places, 428 transitions, 5526 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:32:55,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 483 transitions, 7382 flow [2024-06-27 18:32:58,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 483 transitions, 7330 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:32:58,467 INFO L231 Difference]: Finished difference. Result has 451 places, 434 transitions, 5671 flow [2024-06-27 18:32:58,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5474, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5671, PETRI_PLACES=451, PETRI_TRANSITIONS=434} [2024-06-27 18:32:58,468 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 408 predicate places. [2024-06-27 18:32:58,468 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 434 transitions, 5671 flow [2024-06-27 18:32:58,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:32:58,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:58,468 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 18:32:58,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:32:58,468 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:58,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:58,469 INFO L85 PathProgramCache]: Analyzing trace with hash -648890079, now seen corresponding path program 3 times [2024-06-27 18:32:58,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:58,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891389879] [2024-06-27 18:32:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:58,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:59,435 INFO 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 18:32:59,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:59,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891389879] [2024-06-27 18:32:59,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891389879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:59,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:59,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:59,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854296238] [2024-06-27 18:32:59,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:59,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:59,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:59,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:59,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:59,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:32:59,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 434 transitions, 5671 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 18:32:59,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:59,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:32:59,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:01,087 INFO L124 PetriNetUnfolderBase]: 2957/5115 cut-off events. [2024-06-27 18:33:01,087 INFO L125 PetriNetUnfolderBase]: For 522104/522144 co-relation queries the response was YES. [2024-06-27 18:33:01,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34119 conditions, 5115 events. 2957/5115 cut-off events. For 522104/522144 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 34682 event pairs, 662 based on Foata normal form. 32/5033 useless extension candidates. Maximal degree in co-relation 33898. Up to 4528 conditions per place. [2024-06-27 18:33:01,161 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 409 selfloop transitions, 20 changer transitions 0/466 dead transitions. [2024-06-27 18:33:01,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 466 transitions, 6659 flow [2024-06-27 18:33:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:33:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:33:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:33:01,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-27 18:33:01,162 INFO L175 Difference]: Start difference. First operand has 451 places, 434 transitions, 5671 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:33:01,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 466 transitions, 6659 flow [2024-06-27 18:33:04,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 466 transitions, 6590 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:04,217 INFO L231 Difference]: Finished difference. Result has 455 places, 435 transitions, 5666 flow [2024-06-27 18:33:04,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5602, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5666, PETRI_PLACES=455, PETRI_TRANSITIONS=435} [2024-06-27 18:33:04,218 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 412 predicate places. [2024-06-27 18:33:04,218 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 435 transitions, 5666 flow [2024-06-27 18:33:04,218 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 18:33:04,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:04,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:04,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:33:04,220 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:04,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1094085709, now seen corresponding path program 22 times [2024-06-27 18:33:04,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:04,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358148929] [2024-06-27 18:33:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:04,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:04,914 INFO 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 18:33:04,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:04,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358148929] [2024-06-27 18:33:04,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358148929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:04,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:04,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:04,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514558975] [2024-06-27 18:33:04,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:04,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:04,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:04,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:04,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:05,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:33:05,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 435 transitions, 5666 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:33:05,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:05,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:33:05,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:06,601 INFO L124 PetriNetUnfolderBase]: 3368/5669 cut-off events. [2024-06-27 18:33:06,601 INFO L125 PetriNetUnfolderBase]: For 516403/516403 co-relation queries the response was YES. [2024-06-27 18:33:06,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37481 conditions, 5669 events. 3368/5669 cut-off events. For 516403/516403 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 37719 event pairs, 760 based on Foata normal form. 3/5618 useless extension candidates. Maximal degree in co-relation 37258. Up to 4037 conditions per place. [2024-06-27 18:33:06,692 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 414 selfloop transitions, 67 changer transitions 0/489 dead transitions. [2024-06-27 18:33:06,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 489 transitions, 7530 flow [2024-06-27 18:33:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:06,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 18:33:06,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801864801864802 [2024-06-27 18:33:06,693 INFO L175 Difference]: Start difference. First operand has 455 places, 435 transitions, 5666 flow. Second operand 11 states and 206 transitions. [2024-06-27 18:33:06,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 489 transitions, 7530 flow [2024-06-27 18:33:10,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 489 transitions, 7476 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:33:10,478 INFO L231 Difference]: Finished difference. Result has 458 places, 439 transitions, 5831 flow [2024-06-27 18:33:10,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5612, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5831, PETRI_PLACES=458, PETRI_TRANSITIONS=439} [2024-06-27 18:33:10,478 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 415 predicate places. [2024-06-27 18:33:10,478 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 439 transitions, 5831 flow [2024-06-27 18:33:10,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:33:10,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:10,479 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 18:33:10,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:33:10,479 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:10,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:10,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1019202129, now seen corresponding path program 23 times [2024-06-27 18:33:10,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:10,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307192990] [2024-06-27 18:33:10,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:10,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:11,164 INFO 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 18:33:11,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:11,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307192990] [2024-06-27 18:33:11,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307192990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:11,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:11,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:11,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128409805] [2024-06-27 18:33:11,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:11,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:11,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:11,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:11,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:33:11,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 439 transitions, 5831 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:33:11,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:11,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:33:11,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:12,803 INFO L124 PetriNetUnfolderBase]: 3401/5730 cut-off events. [2024-06-27 18:33:12,803 INFO L125 PetriNetUnfolderBase]: For 526031/526031 co-relation queries the response was YES. [2024-06-27 18:33:12,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38246 conditions, 5730 events. 3401/5730 cut-off events. For 526031/526031 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 38379 event pairs, 900 based on Foata normal form. 3/5663 useless extension candidates. Maximal degree in co-relation 38022. Up to 5193 conditions per place. [2024-06-27 18:33:12,888 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 452 selfloop transitions, 23 changer transitions 0/483 dead transitions. [2024-06-27 18:33:12,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 483 transitions, 7013 flow [2024-06-27 18:33:12,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:33:12,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405594405594406 [2024-06-27 18:33:12,889 INFO L175 Difference]: Start difference. First operand has 458 places, 439 transitions, 5831 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:33:12,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 483 transitions, 7013 flow [2024-06-27 18:33:16,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 483 transitions, 6727 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 18:33:16,921 INFO L231 Difference]: Finished difference. Result has 460 places, 441 transitions, 5640 flow [2024-06-27 18:33:16,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5551, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5640, PETRI_PLACES=460, PETRI_TRANSITIONS=441} [2024-06-27 18:33:16,921 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 417 predicate places. [2024-06-27 18:33:16,921 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 441 transitions, 5640 flow [2024-06-27 18:33:16,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:33:16,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:16,922 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 18:33:16,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:33:16,922 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:16,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash -6638795, now seen corresponding path program 4 times [2024-06-27 18:33:16,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:16,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698951845] [2024-06-27 18:33:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:16,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:17,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:17,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698951845] [2024-06-27 18:33:17,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698951845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:17,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:17,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:17,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406615455] [2024-06-27 18:33:17,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:17,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:17,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:17,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:18,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:33:18,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 441 transitions, 5640 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 18:33:18,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:18,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:33:18,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:19,540 INFO L124 PetriNetUnfolderBase]: 3089/5340 cut-off events. [2024-06-27 18:33:19,540 INFO L125 PetriNetUnfolderBase]: For 578524/578565 co-relation queries the response was YES. [2024-06-27 18:33:19,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35546 conditions, 5340 events. 3089/5340 cut-off events. For 578524/578565 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 36558 event pairs, 709 based on Foata normal form. 33/5251 useless extension candidates. Maximal degree in co-relation 35321. Up to 4675 conditions per place. [2024-06-27 18:33:19,626 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 420 selfloop transitions, 27 changer transitions 0/484 dead transitions. [2024-06-27 18:33:19,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 484 transitions, 6750 flow [2024-06-27 18:33:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:33:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:33:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:33:19,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-06-27 18:33:19,627 INFO L175 Difference]: Start difference. First operand has 460 places, 441 transitions, 5640 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:33:19,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 484 transitions, 6750 flow [2024-06-27 18:33:23,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 484 transitions, 6685 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:33:23,221 INFO L231 Difference]: Finished difference. Result has 464 places, 449 transitions, 5732 flow [2024-06-27 18:33:23,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5575, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5732, PETRI_PLACES=464, PETRI_TRANSITIONS=449} [2024-06-27 18:33:23,222 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 421 predicate places. [2024-06-27 18:33:23,222 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 449 transitions, 5732 flow [2024-06-27 18:33:23,222 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 18:33:23,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:23,222 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 18:33:23,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 18:33:23,222 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:23,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:23,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1093855069, now seen corresponding path program 24 times [2024-06-27 18:33:23,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:23,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403979604] [2024-06-27 18:33:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:23,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:23,924 INFO 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 18:33:23,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:23,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403979604] [2024-06-27 18:33:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403979604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:23,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:23,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495004645] [2024-06-27 18:33:23,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:23,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:23,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:23,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:23,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:24,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:33:24,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 449 transitions, 5732 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:33:24,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:24,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:33:24,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:25,734 INFO L124 PetriNetUnfolderBase]: 3500/5906 cut-off events. [2024-06-27 18:33:25,734 INFO L125 PetriNetUnfolderBase]: For 567343/567343 co-relation queries the response was YES. [2024-06-27 18:33:25,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39835 conditions, 5906 events. 3500/5906 cut-off events. For 567343/567343 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 39632 event pairs, 767 based on Foata normal form. 3/5853 useless extension candidates. Maximal degree in co-relation 39606. Up to 4158 conditions per place. [2024-06-27 18:33:25,831 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 428 selfloop transitions, 71 changer transitions 0/507 dead transitions. [2024-06-27 18:33:25,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 507 transitions, 7952 flow [2024-06-27 18:33:25,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 18:33:25,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49417249417249415 [2024-06-27 18:33:25,832 INFO L175 Difference]: Start difference. First operand has 464 places, 449 transitions, 5732 flow. Second operand 11 states and 212 transitions. [2024-06-27 18:33:25,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 507 transitions, 7952 flow [2024-06-27 18:33:30,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 507 transitions, 7896 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:33:30,833 INFO L231 Difference]: Finished difference. Result has 470 places, 453 transitions, 5879 flow [2024-06-27 18:33:30,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5676, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5879, PETRI_PLACES=470, PETRI_TRANSITIONS=453} [2024-06-27 18:33:30,833 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 427 predicate places. [2024-06-27 18:33:30,833 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 453 transitions, 5879 flow [2024-06-27 18:33:30,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:33:30,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:30,833 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 18:33:30,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 18:33:30,833 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:30,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:30,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1093848373, now seen corresponding path program 13 times [2024-06-27 18:33:30,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:30,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776040524] [2024-06-27 18:33:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:30,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:31,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:31,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776040524] [2024-06-27 18:33:31,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776040524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:31,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:31,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:31,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637740189] [2024-06-27 18:33:31,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:31,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:31,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:31,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:31,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:33:31,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 453 transitions, 5879 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:33:31,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:31,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:33:31,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:33,544 INFO L124 PetriNetUnfolderBase]: 3514/5887 cut-off events. [2024-06-27 18:33:33,544 INFO L125 PetriNetUnfolderBase]: For 555464/555464 co-relation queries the response was YES. [2024-06-27 18:33:33,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40490 conditions, 5887 events. 3514/5887 cut-off events. For 555464/555464 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 39223 event pairs, 924 based on Foata normal form. 1/5812 useless extension candidates. Maximal degree in co-relation 40260. Up to 5353 conditions per place. [2024-06-27 18:33:33,622 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 431 selfloop transitions, 62 changer transitions 0/501 dead transitions. [2024-06-27 18:33:33,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 501 transitions, 7409 flow [2024-06-27 18:33:33,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:33:33,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289044289044289 [2024-06-27 18:33:33,623 INFO L175 Difference]: Start difference. First operand has 470 places, 453 transitions, 5879 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:33:33,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 501 transitions, 7409 flow [2024-06-27 18:33:38,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 501 transitions, 7269 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:33:38,055 INFO L231 Difference]: Finished difference. Result has 477 places, 464 transitions, 6192 flow [2024-06-27 18:33:38,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5739, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6192, PETRI_PLACES=477, PETRI_TRANSITIONS=464} [2024-06-27 18:33:38,055 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 434 predicate places. [2024-06-27 18:33:38,056 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 464 transitions, 6192 flow [2024-06-27 18:33:38,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:33:38,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:38,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:38,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 18:33:38,056 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:38,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:38,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1526346267, now seen corresponding path program 25 times [2024-06-27 18:33:38,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:38,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876969019] [2024-06-27 18:33:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:38,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:38,734 INFO 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 18:33:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:38,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876969019] [2024-06-27 18:33:38,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876969019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:38,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:38,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:38,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802852338] [2024-06-27 18:33:38,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:38,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:38,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:38,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:38,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:38,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:33:38,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 464 transitions, 6192 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:33:38,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:38,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:33:38,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:40,639 INFO L124 PetriNetUnfolderBase]: 3547/5952 cut-off events. [2024-06-27 18:33:40,640 INFO L125 PetriNetUnfolderBase]: For 585400/585400 co-relation queries the response was YES. [2024-06-27 18:33:40,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40779 conditions, 5952 events. 3547/5952 cut-off events. For 585400/585400 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 39888 event pairs, 906 based on Foata normal form. 3/5887 useless extension candidates. Maximal degree in co-relation 40545. Up to 4981 conditions per place. [2024-06-27 18:33:40,724 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 465 selfloop transitions, 41 changer transitions 0/514 dead transitions. [2024-06-27 18:33:40,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 514 transitions, 7792 flow [2024-06-27 18:33:40,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 18:33:40,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46853146853146854 [2024-06-27 18:33:40,725 INFO L175 Difference]: Start difference. First operand has 477 places, 464 transitions, 6192 flow. Second operand 11 states and 201 transitions. [2024-06-27 18:33:40,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 514 transitions, 7792 flow [2024-06-27 18:33:45,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 514 transitions, 7340 flow, removed 85 selfloop flow, removed 9 redundant places. [2024-06-27 18:33:45,645 INFO L231 Difference]: Finished difference. Result has 479 places, 466 transitions, 5865 flow [2024-06-27 18:33:45,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5740, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5865, PETRI_PLACES=479, PETRI_TRANSITIONS=466} [2024-06-27 18:33:45,645 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 436 predicate places. [2024-06-27 18:33:45,646 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 466 transitions, 5865 flow [2024-06-27 18:33:45,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:33:45,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:45,646 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 18:33:45,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 18:33:45,646 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:45,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash -648900991, now seen corresponding path program 1 times [2024-06-27 18:33:45,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:45,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678708145] [2024-06-27 18:33:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:45,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:46,485 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 18:33:46,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:46,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678708145] [2024-06-27 18:33:46,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678708145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:46,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:46,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:46,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074796642] [2024-06-27 18:33:46,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:46,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:46,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:46,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:46,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:46,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:33:46,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 466 transitions, 5865 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:33:46,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:46,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:33:46,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:48,327 INFO L124 PetriNetUnfolderBase]: 3549/5933 cut-off events. [2024-06-27 18:33:48,327 INFO L125 PetriNetUnfolderBase]: For 556537/556537 co-relation queries the response was YES. [2024-06-27 18:33:48,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40213 conditions, 5933 events. 3549/5933 cut-off events. For 556537/556537 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 39562 event pairs, 943 based on Foata normal form. 2/5861 useless extension candidates. Maximal degree in co-relation 39981. Up to 5489 conditions per place. [2024-06-27 18:33:48,418 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 469 selfloop transitions, 27 changer transitions 0/504 dead transitions. [2024-06-27 18:33:48,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 504 transitions, 7045 flow [2024-06-27 18:33:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:33:48,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289044289044289 [2024-06-27 18:33:48,419 INFO L175 Difference]: Start difference. First operand has 479 places, 466 transitions, 5865 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:33:48,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 504 transitions, 7045 flow [2024-06-27 18:33:52,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 504 transitions, 6956 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:33:52,528 INFO L231 Difference]: Finished difference. Result has 482 places, 468 transitions, 5881 flow [2024-06-27 18:33:52,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5776, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5881, PETRI_PLACES=482, PETRI_TRANSITIONS=468} [2024-06-27 18:33:52,528 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 439 predicate places. [2024-06-27 18:33:52,528 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 468 transitions, 5881 flow [2024-06-27 18:33:52,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:33:52,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:52,529 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 18:33:52,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 18:33:52,529 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:52,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:52,529 INFO L85 PathProgramCache]: Analyzing trace with hash -635587359, now seen corresponding path program 5 times [2024-06-27 18:33:52,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:52,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498520527] [2024-06-27 18:33:52,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:52,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:53,412 INFO 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 18:33:53,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:53,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498520527] [2024-06-27 18:33:53,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498520527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:53,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:53,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:53,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204515025] [2024-06-27 18:33:53,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:53,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:53,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:53,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:53,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:53,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:33:53,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 468 transitions, 5881 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 18:33:53,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:53,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:33:53,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:55,154 INFO L124 PetriNetUnfolderBase]: 3224/5576 cut-off events. [2024-06-27 18:33:55,154 INFO L125 PetriNetUnfolderBase]: For 628653/628691 co-relation queries the response was YES. [2024-06-27 18:33:55,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37750 conditions, 5576 events. 3224/5576 cut-off events. For 628653/628691 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 38606 event pairs, 751 based on Foata normal form. 33/5490 useless extension candidates. Maximal degree in co-relation 37517. Up to 4932 conditions per place. [2024-06-27 18:33:55,239 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 439 selfloop transitions, 26 changer transitions 0/503 dead transitions. [2024-06-27 18:33:55,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 503 transitions, 6959 flow [2024-06-27 18:33:55,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:33:55,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:33:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 18:33:55,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2024-06-27 18:33:55,240 INFO L175 Difference]: Start difference. First operand has 482 places, 468 transitions, 5881 flow. Second operand 10 states and 176 transitions. [2024-06-27 18:33:55,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 503 transitions, 6959 flow [2024-06-27 18:33:59,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 503 transitions, 6870 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 18:33:59,518 INFO L231 Difference]: Finished difference. Result has 484 places, 471 transitions, 5900 flow [2024-06-27 18:33:59,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5792, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5900, PETRI_PLACES=484, PETRI_TRANSITIONS=471} [2024-06-27 18:33:59,518 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 441 predicate places. [2024-06-27 18:33:59,518 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 471 transitions, 5900 flow [2024-06-27 18:33:59,518 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 18:33:59,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:59,518 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 18:33:59,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 18:33:59,519 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:59,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:59,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1273868379, now seen corresponding path program 26 times [2024-06-27 18:33:59,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:59,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724816867] [2024-06-27 18:33:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:59,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:00,185 INFO 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 18:34:00,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:00,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724816867] [2024-06-27 18:34:00,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724816867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:00,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:00,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:00,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125184659] [2024-06-27 18:34:00,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:00,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:00,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:00,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:00,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:34:00,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 471 transitions, 5900 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:00,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:00,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:34:00,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:02,097 INFO L124 PetriNetUnfolderBase]: 3563/5973 cut-off events. [2024-06-27 18:34:02,097 INFO L125 PetriNetUnfolderBase]: For 549393/549393 co-relation queries the response was YES. [2024-06-27 18:34:02,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39991 conditions, 5973 events. 3563/5973 cut-off events. For 549393/549393 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 40160 event pairs, 820 based on Foata normal form. 3/5912 useless extension candidates. Maximal degree in co-relation 39756. Up to 5017 conditions per place. [2024-06-27 18:34:02,192 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 462 selfloop transitions, 48 changer transitions 0/518 dead transitions. [2024-06-27 18:34:02,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 518 transitions, 7474 flow [2024-06-27 18:34:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:02,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 18:34:02,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 18:34:02,193 INFO L175 Difference]: Start difference. First operand has 484 places, 471 transitions, 5900 flow. Second operand 11 states and 198 transitions. [2024-06-27 18:34:02,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 518 transitions, 7474 flow [2024-06-27 18:34:06,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 518 transitions, 7380 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:06,875 INFO L231 Difference]: Finished difference. Result has 488 places, 471 transitions, 5907 flow [2024-06-27 18:34:06,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5806, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5907, PETRI_PLACES=488, PETRI_TRANSITIONS=471} [2024-06-27 18:34:06,876 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 445 predicate places. [2024-06-27 18:34:06,876 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 471 transitions, 5907 flow [2024-06-27 18:34:06,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:06,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:06,876 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 18:34:06,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 18:34:06,876 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:06,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1274105529, now seen corresponding path program 27 times [2024-06-27 18:34:06,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:06,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068176500] [2024-06-27 18:34:06,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:06,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:07,553 INFO 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 18:34:07,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:07,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068176500] [2024-06-27 18:34:07,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068176500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:07,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:07,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:07,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18431024] [2024-06-27 18:34:07,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:07,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:07,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:07,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:07,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:07,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:34:07,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 471 transitions, 5907 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:07,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:07,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:34:07,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:09,580 INFO L124 PetriNetUnfolderBase]: 3557/5955 cut-off events. [2024-06-27 18:34:09,580 INFO L125 PetriNetUnfolderBase]: For 521041/521041 co-relation queries the response was YES. [2024-06-27 18:34:09,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39637 conditions, 5955 events. 3557/5955 cut-off events. For 521041/521041 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 39951 event pairs, 836 based on Foata normal form. 3/5891 useless extension candidates. Maximal degree in co-relation 39401. Up to 5013 conditions per place. [2024-06-27 18:34:09,664 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 466 selfloop transitions, 43 changer transitions 0/517 dead transitions. [2024-06-27 18:34:09,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 517 transitions, 7177 flow [2024-06-27 18:34:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:09,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:09,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:34:09,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46386946386946387 [2024-06-27 18:34:09,665 INFO L175 Difference]: Start difference. First operand has 488 places, 471 transitions, 5907 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:34:09,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 517 transitions, 7177 flow [2024-06-27 18:34:14,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 517 transitions, 7069 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:34:14,082 INFO L231 Difference]: Finished difference. Result has 490 places, 471 transitions, 5890 flow [2024-06-27 18:34:14,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5799, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5890, PETRI_PLACES=490, PETRI_TRANSITIONS=471} [2024-06-27 18:34:14,083 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 447 predicate places. [2024-06-27 18:34:14,083 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 471 transitions, 5890 flow [2024-06-27 18:34:14,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:14,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:14,083 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 18:34:14,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 18:34:14,084 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:14,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1324082149, now seen corresponding path program 6 times [2024-06-27 18:34:14,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:14,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185358619] [2024-06-27 18:34:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:14,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:15,023 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 18:34:15,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:15,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185358619] [2024-06-27 18:34:15,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185358619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:15,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:15,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:15,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431232359] [2024-06-27 18:34:15,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:15,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:15,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:15,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:15,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:15,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:34:15,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 471 transitions, 5890 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 18:34:15,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:15,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:34:15,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:16,709 INFO L124 PetriNetUnfolderBase]: 3213/5470 cut-off events. [2024-06-27 18:34:16,709 INFO L125 PetriNetUnfolderBase]: For 560378/560414 co-relation queries the response was YES. [2024-06-27 18:34:16,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36593 conditions, 5470 events. 3213/5470 cut-off events. For 560378/560414 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 37143 event pairs, 710 based on Foata normal form. 33/5389 useless extension candidates. Maximal degree in co-relation 36356. Up to 4853 conditions per place. [2024-06-27 18:34:16,793 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 444 selfloop transitions, 28 changer transitions 0/510 dead transitions. [2024-06-27 18:34:16,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 510 transitions, 7060 flow [2024-06-27 18:34:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:16,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:16,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:34:16,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:34:16,794 INFO L175 Difference]: Start difference. First operand has 490 places, 471 transitions, 5890 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:34:16,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 510 transitions, 7060 flow [2024-06-27 18:34:20,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 510 transitions, 6930 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-27 18:34:20,371 INFO L231 Difference]: Finished difference. Result has 489 places, 474 transitions, 5871 flow [2024-06-27 18:34:20,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5760, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5871, PETRI_PLACES=489, PETRI_TRANSITIONS=474} [2024-06-27 18:34:20,371 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 446 predicate places. [2024-06-27 18:34:20,371 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 474 transitions, 5871 flow [2024-06-27 18:34:20,371 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 18:34:20,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:20,372 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 18:34:20,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 18:34:20,372 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:20,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1323774319, now seen corresponding path program 28 times [2024-06-27 18:34:20,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:20,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746139681] [2024-06-27 18:34:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:20,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:21,057 INFO 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 18:34:21,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:21,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746139681] [2024-06-27 18:34:21,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746139681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:21,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:21,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:21,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166471869] [2024-06-27 18:34:21,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:21,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:21,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:21,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:21,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:21,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:34:21,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 474 transitions, 5871 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:21,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:21,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:34:21,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:22,937 INFO L124 PetriNetUnfolderBase]: 3591/6053 cut-off events. [2024-06-27 18:34:22,937 INFO L125 PetriNetUnfolderBase]: For 512571/512571 co-relation queries the response was YES. [2024-06-27 18:34:23,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39870 conditions, 6053 events. 3591/6053 cut-off events. For 512571/512571 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 40876 event pairs, 854 based on Foata normal form. 3/5988 useless extension candidates. Maximal degree in co-relation 39631. Up to 4265 conditions per place. [2024-06-27 18:34:23,019 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 440 selfloop transitions, 77 changer transitions 0/525 dead transitions. [2024-06-27 18:34:23,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 525 transitions, 7541 flow [2024-06-27 18:34:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 18:34:23,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801864801864802 [2024-06-27 18:34:23,021 INFO L175 Difference]: Start difference. First operand has 489 places, 474 transitions, 5871 flow. Second operand 11 states and 206 transitions. [2024-06-27 18:34:23,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 525 transitions, 7541 flow [2024-06-27 18:34:27,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 525 transitions, 7459 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:27,026 INFO L231 Difference]: Finished difference. Result has 493 places, 476 transitions, 5984 flow [2024-06-27 18:34:27,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5789, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5984, PETRI_PLACES=493, PETRI_TRANSITIONS=476} [2024-06-27 18:34:27,027 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 450 predicate places. [2024-06-27 18:34:27,027 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 476 transitions, 5984 flow [2024-06-27 18:34:27,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:27,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:27,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:27,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 18:34:27,027 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:27,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:27,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1932431053, now seen corresponding path program 29 times [2024-06-27 18:34:27,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:27,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623566969] [2024-06-27 18:34:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:27,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:27,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:27,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623566969] [2024-06-27 18:34:27,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623566969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:27,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:27,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:27,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117312462] [2024-06-27 18:34:27,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:27,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:27,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:27,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:27,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:34:27,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 476 transitions, 5984 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:27,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:27,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:34:27,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:29,649 INFO L124 PetriNetUnfolderBase]: 3585/6043 cut-off events. [2024-06-27 18:34:29,649 INFO L125 PetriNetUnfolderBase]: For 483854/483854 co-relation queries the response was YES. [2024-06-27 18:34:29,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39684 conditions, 6043 events. 3585/6043 cut-off events. For 483854/483854 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 40760 event pairs, 779 based on Foata normal form. 3/5989 useless extension candidates. Maximal degree in co-relation 39444. Up to 4261 conditions per place. [2024-06-27 18:34:29,731 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 443 selfloop transitions, 77 changer transitions 0/528 dead transitions. [2024-06-27 18:34:29,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 528 transitions, 7944 flow [2024-06-27 18:34:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 18:34:29,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48951048951048953 [2024-06-27 18:34:29,732 INFO L175 Difference]: Start difference. First operand has 493 places, 476 transitions, 5984 flow. Second operand 11 states and 210 transitions. [2024-06-27 18:34:29,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 528 transitions, 7944 flow [2024-06-27 18:34:33,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 528 transitions, 7745 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 18:34:33,267 INFO L231 Difference]: Finished difference. Result has 495 places, 476 transitions, 5944 flow [2024-06-27 18:34:33,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5785, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5944, PETRI_PLACES=495, PETRI_TRANSITIONS=476} [2024-06-27 18:34:33,268 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 452 predicate places. [2024-06-27 18:34:33,268 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 476 transitions, 5944 flow [2024-06-27 18:34:33,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:33,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:33,268 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 18:34:33,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 18:34:33,268 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:33,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 616762347, now seen corresponding path program 30 times [2024-06-27 18:34:33,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:33,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130879667] [2024-06-27 18:34:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:33,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:33,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:33,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130879667] [2024-06-27 18:34:33,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130879667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:33,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:33,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:33,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757448309] [2024-06-27 18:34:33,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:33,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:33,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:33,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:33,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:34,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:34:34,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 476 transitions, 5944 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:34,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:34,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:34:34,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:35,784 INFO L124 PetriNetUnfolderBase]: 3618/6017 cut-off events. [2024-06-27 18:34:35,784 INFO L125 PetriNetUnfolderBase]: For 489500/489500 co-relation queries the response was YES. [2024-06-27 18:34:35,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39535 conditions, 6017 events. 3618/6017 cut-off events. For 489500/489500 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 40188 event pairs, 634 based on Foata normal form. 3/5965 useless extension candidates. Maximal degree in co-relation 39295. Up to 4285 conditions per place. [2024-06-27 18:34:35,866 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 421 selfloop transitions, 97 changer transitions 0/526 dead transitions. [2024-06-27 18:34:35,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 526 transitions, 7606 flow [2024-06-27 18:34:35,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:34:35,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731934731934732 [2024-06-27 18:34:35,867 INFO L175 Difference]: Start difference. First operand has 495 places, 476 transitions, 5944 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:34:35,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 526 transitions, 7606 flow [2024-06-27 18:34:38,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 526 transitions, 7439 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:34:38,849 INFO L231 Difference]: Finished difference. Result has 496 places, 478 transitions, 6012 flow [2024-06-27 18:34:38,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5781, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6012, PETRI_PLACES=496, PETRI_TRANSITIONS=478} [2024-06-27 18:34:38,850 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 453 predicate places. [2024-06-27 18:34:38,850 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 478 transitions, 6012 flow [2024-06-27 18:34:38,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:38,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:38,851 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 18:34:38,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 18:34:38,851 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:38,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:38,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1315730749, now seen corresponding path program 31 times [2024-06-27 18:34:38,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:38,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302326551] [2024-06-27 18:34:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:38,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:39,533 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 18:34:39,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:39,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302326551] [2024-06-27 18:34:39,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302326551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:39,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:39,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:39,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412004467] [2024-06-27 18:34:39,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:39,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:39,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:39,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:39,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:34:39,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 478 transitions, 6012 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:39,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:39,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:34:39,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:41,487 INFO L124 PetriNetUnfolderBase]: 3651/6181 cut-off events. [2024-06-27 18:34:41,487 INFO L125 PetriNetUnfolderBase]: For 495888/495888 co-relation queries the response was YES. [2024-06-27 18:34:41,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40289 conditions, 6181 events. 3651/6181 cut-off events. For 495888/495888 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 42086 event pairs, 858 based on Foata normal form. 3/6115 useless extension candidates. Maximal degree in co-relation 40048. Up to 4309 conditions per place. [2024-06-27 18:34:41,566 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 450 selfloop transitions, 75 changer transitions 0/533 dead transitions. [2024-06-27 18:34:41,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 533 transitions, 8038 flow [2024-06-27 18:34:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-27 18:34:41,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965034965034965 [2024-06-27 18:34:41,567 INFO L175 Difference]: Start difference. First operand has 496 places, 478 transitions, 6012 flow. Second operand 11 states and 213 transitions. [2024-06-27 18:34:41,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 533 transitions, 8038 flow [2024-06-27 18:34:44,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 533 transitions, 7739 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:34:44,793 INFO L231 Difference]: Finished difference. Result has 498 places, 480 transitions, 5902 flow [2024-06-27 18:34:44,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5719, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5902, PETRI_PLACES=498, PETRI_TRANSITIONS=480} [2024-06-27 18:34:44,793 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 455 predicate places. [2024-06-27 18:34:44,793 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 480 transitions, 5902 flow [2024-06-27 18:34:44,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:44,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:44,793 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 18:34:44,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 18:34:44,793 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:44,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1315493599, now seen corresponding path program 32 times [2024-06-27 18:34:44,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:44,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176132330] [2024-06-27 18:34:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:44,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:45,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:45,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176132330] [2024-06-27 18:34:45,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176132330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:45,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:45,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:45,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273340709] [2024-06-27 18:34:45,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:45,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:45,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:45,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:45,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:45,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:34:45,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 480 transitions, 5902 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:45,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:45,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:34:45,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:47,438 INFO L124 PetriNetUnfolderBase]: 3684/6196 cut-off events. [2024-06-27 18:34:47,438 INFO L125 PetriNetUnfolderBase]: For 499797/499797 co-relation queries the response was YES. [2024-06-27 18:34:47,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40149 conditions, 6196 events. 3684/6196 cut-off events. For 499797/499797 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 42000 event pairs, 824 based on Foata normal form. 3/6130 useless extension candidates. Maximal degree in co-relation 39907. Up to 4333 conditions per place. [2024-06-27 18:34:47,523 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 447 selfloop transitions, 80 changer transitions 0/535 dead transitions. [2024-06-27 18:34:47,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 535 transitions, 7934 flow [2024-06-27 18:34:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 18:34:47,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184149184149184 [2024-06-27 18:34:47,524 INFO L175 Difference]: Start difference. First operand has 498 places, 480 transitions, 5902 flow. Second operand 11 states and 211 transitions. [2024-06-27 18:34:47,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 535 transitions, 7934 flow [2024-06-27 18:34:51,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 535 transitions, 7696 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 18:34:51,612 INFO L231 Difference]: Finished difference. Result has 499 places, 482 transitions, 5861 flow [2024-06-27 18:34:51,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5670, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5861, PETRI_PLACES=499, PETRI_TRANSITIONS=482} [2024-06-27 18:34:51,613 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 456 predicate places. [2024-06-27 18:34:51,613 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 482 transitions, 5861 flow [2024-06-27 18:34:51,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:51,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:51,613 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 18:34:51,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 18:34:51,613 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:51,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1315493413, now seen corresponding path program 14 times [2024-06-27 18:34:51,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:51,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845610607] [2024-06-27 18:34:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:51,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:52,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:52,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:52,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845610607] [2024-06-27 18:34:52,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845610607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:52,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:52,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:52,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378802015] [2024-06-27 18:34:52,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:52,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:52,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:52,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:52,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:52,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:34:52,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 482 transitions, 5861 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:52,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:52,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:34:52,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:54,305 INFO L124 PetriNetUnfolderBase]: 3693/6129 cut-off events. [2024-06-27 18:34:54,306 INFO L125 PetriNetUnfolderBase]: For 479896/479896 co-relation queries the response was YES. [2024-06-27 18:34:54,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40174 conditions, 6129 events. 3693/6129 cut-off events. For 479896/479896 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 40860 event pairs, 953 based on Foata normal form. 1/6062 useless extension candidates. Maximal degree in co-relation 39931. Up to 5638 conditions per place. [2024-06-27 18:34:54,387 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 455 selfloop transitions, 63 changer transitions 0/526 dead transitions. [2024-06-27 18:34:54,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 526 transitions, 7372 flow [2024-06-27 18:34:54,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:54,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:34:54,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43123543123543123 [2024-06-27 18:34:54,388 INFO L175 Difference]: Start difference. First operand has 499 places, 482 transitions, 5861 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:34:54,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 526 transitions, 7372 flow [2024-06-27 18:34:58,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 526 transitions, 7211 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:34:58,681 INFO L231 Difference]: Finished difference. Result has 506 places, 490 transitions, 6119 flow [2024-06-27 18:34:58,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5700, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6119, PETRI_PLACES=506, PETRI_TRANSITIONS=490} [2024-06-27 18:34:58,681 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 463 predicate places. [2024-06-27 18:34:58,681 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 490 transitions, 6119 flow [2024-06-27 18:34:58,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:34:58,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:58,682 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 18:34:58,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 18:34:58,682 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:58,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1331611677, now seen corresponding path program 6 times [2024-06-27 18:34:58,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:58,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977281881] [2024-06-27 18:34:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:58,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:59,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:59,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977281881] [2024-06-27 18:34:59,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977281881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:59,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:59,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:59,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442489629] [2024-06-27 18:34:59,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:59,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:59,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:59,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:59,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:59,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:34:59,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 490 transitions, 6119 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 18:34:59,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:59,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:34:59,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:01,536 INFO L124 PetriNetUnfolderBase]: 3535/6079 cut-off events. [2024-06-27 18:35:01,537 INFO L125 PetriNetUnfolderBase]: For 473263/473288 co-relation queries the response was YES. [2024-06-27 18:35:01,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38601 conditions, 6079 events. 3535/6079 cut-off events. For 473263/473288 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 42297 event pairs, 929 based on Foata normal form. 5/5988 useless extension candidates. Maximal degree in co-relation 38353. Up to 5319 conditions per place. [2024-06-27 18:35:01,623 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 416 selfloop transitions, 19 changer transitions 0/525 dead transitions. [2024-06-27 18:35:01,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 525 transitions, 7217 flow [2024-06-27 18:35:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 18:35:01,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 18:35:01,624 INFO L175 Difference]: Start difference. First operand has 506 places, 490 transitions, 6119 flow. Second operand 11 states and 187 transitions. [2024-06-27 18:35:01,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 525 transitions, 7217 flow [2024-06-27 18:35:04,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 525 transitions, 6991 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-27 18:35:04,981 INFO L231 Difference]: Finished difference. Result has 512 places, 491 transitions, 5981 flow [2024-06-27 18:35:04,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5893, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5981, PETRI_PLACES=512, PETRI_TRANSITIONS=491} [2024-06-27 18:35:04,981 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 469 predicate places. [2024-06-27 18:35:04,982 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 491 transitions, 5981 flow [2024-06-27 18:35:04,982 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 18:35:04,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:04,982 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 18:35:04,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 18:35:04,982 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:04,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:04,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1331789431, now seen corresponding path program 15 times [2024-06-27 18:35:04,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:04,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550676553] [2024-06-27 18:35:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:04,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:05,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:05,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550676553] [2024-06-27 18:35:05,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550676553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:05,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:05,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:05,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504901391] [2024-06-27 18:35:05,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:05,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:05,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:05,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:05,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:05,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:35:05,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 491 transitions, 5981 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:35:05,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:05,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:35:05,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:07,683 INFO L124 PetriNetUnfolderBase]: 3701/6140 cut-off events. [2024-06-27 18:35:07,683 INFO L125 PetriNetUnfolderBase]: For 465489/465489 co-relation queries the response was YES. [2024-06-27 18:35:07,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39610 conditions, 6140 events. 3701/6140 cut-off events. For 465489/465489 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 40944 event pairs, 946 based on Foata normal form. 1/6073 useless extension candidates. Maximal degree in co-relation 39362. Up to 5652 conditions per place. [2024-06-27 18:35:07,772 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 452 selfloop transitions, 72 changer transitions 0/532 dead transitions. [2024-06-27 18:35:07,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 532 transitions, 7418 flow [2024-06-27 18:35:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:07,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:35:07,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42657342657342656 [2024-06-27 18:35:07,773 INFO L175 Difference]: Start difference. First operand has 512 places, 491 transitions, 5981 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:35:07,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 532 transitions, 7418 flow [2024-06-27 18:35:12,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 532 transitions, 7340 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 18:35:12,561 INFO L231 Difference]: Finished difference. Result has 517 places, 498 transitions, 6303 flow [2024-06-27 18:35:12,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5903, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6303, PETRI_PLACES=517, PETRI_TRANSITIONS=498} [2024-06-27 18:35:12,561 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 474 predicate places. [2024-06-27 18:35:12,562 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 498 transitions, 6303 flow [2024-06-27 18:35:12,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:35:12,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:12,562 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 18:35:12,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 18:35:12,562 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:12,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:12,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1315500109, now seen corresponding path program 33 times [2024-06-27 18:35:12,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:12,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576068888] [2024-06-27 18:35:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:12,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:13,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:13,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576068888] [2024-06-27 18:35:13,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576068888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:13,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:13,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:13,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430454937] [2024-06-27 18:35:13,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:13,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:13,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:13,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:13,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:13,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:35:13,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 498 transitions, 6303 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:35:13,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:13,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:35:13,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:15,181 INFO L124 PetriNetUnfolderBase]: 3695/6225 cut-off events. [2024-06-27 18:35:15,182 INFO L125 PetriNetUnfolderBase]: For 458095/458095 co-relation queries the response was YES. [2024-06-27 18:35:15,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39432 conditions, 6225 events. 3695/6225 cut-off events. For 458095/458095 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 42308 event pairs, 823 based on Foata normal form. 3/6159 useless extension candidates. Maximal degree in co-relation 39180. Up to 4357 conditions per place. [2024-06-27 18:35:15,273 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 464 selfloop transitions, 78 changer transitions 0/550 dead transitions. [2024-06-27 18:35:15,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 550 transitions, 8025 flow [2024-06-27 18:35:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 18:35:15,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184149184149184 [2024-06-27 18:35:15,274 INFO L175 Difference]: Start difference. First operand has 517 places, 498 transitions, 6303 flow. Second operand 11 states and 211 transitions. [2024-06-27 18:35:15,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 550 transitions, 8025 flow [2024-06-27 18:35:18,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 550 transitions, 7824 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-27 18:35:18,264 INFO L231 Difference]: Finished difference. Result has 523 places, 498 transitions, 6263 flow [2024-06-27 18:35:18,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6102, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6263, PETRI_PLACES=523, PETRI_TRANSITIONS=498} [2024-06-27 18:35:18,264 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 480 predicate places. [2024-06-27 18:35:18,264 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 498 transitions, 6263 flow [2024-06-27 18:35:18,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:35:18,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:18,265 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 18:35:18,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 18:35:18,265 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:18,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1087414633, now seen corresponding path program 16 times [2024-06-27 18:35:18,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:18,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990198585] [2024-06-27 18:35:18,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:18,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:19,176 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 18:35:19,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:19,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990198585] [2024-06-27 18:35:19,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990198585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:19,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:19,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992932090] [2024-06-27 18:35:19,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:19,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:19,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:19,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:19,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:19,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:35:19,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 498 transitions, 6263 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:35:19,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:19,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:35:19,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:21,129 INFO L124 PetriNetUnfolderBase]: 3698/6135 cut-off events. [2024-06-27 18:35:21,129 INFO L125 PetriNetUnfolderBase]: For 422909/422909 co-relation queries the response was YES. [2024-06-27 18:35:21,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39376 conditions, 6135 events. 3698/6135 cut-off events. For 422909/422909 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 40898 event pairs, 943 based on Foata normal form. 1/6068 useless extension candidates. Maximal degree in co-relation 39123. Up to 5624 conditions per place. [2024-06-27 18:35:21,225 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 482 selfloop transitions, 55 changer transitions 0/545 dead transitions. [2024-06-27 18:35:21,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 545 transitions, 7672 flow [2024-06-27 18:35:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:35:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:35:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-27 18:35:21,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-06-27 18:35:21,226 INFO L175 Difference]: Start difference. First operand has 523 places, 498 transitions, 6263 flow. Second operand 12 states and 198 transitions. [2024-06-27 18:35:21,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 545 transitions, 7672 flow [2024-06-27 18:35:24,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 545 transitions, 7497 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:35:24,360 INFO L231 Difference]: Finished difference. Result has 525 places, 508 transitions, 6366 flow [2024-06-27 18:35:24,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6088, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6366, PETRI_PLACES=525, PETRI_TRANSITIONS=508} [2024-06-27 18:35:24,360 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 482 predicate places. [2024-06-27 18:35:24,360 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 508 transitions, 6366 flow [2024-06-27 18:35:24,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:35:24,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:24,360 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 18:35:24,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 18:35:24,360 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:24,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:24,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1087592449, now seen corresponding path program 34 times [2024-06-27 18:35:24,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:24,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718162610] [2024-06-27 18:35:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:24,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:25,039 INFO 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 18:35:25,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718162610] [2024-06-27 18:35:25,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718162610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:25,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:25,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:25,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57319672] [2024-06-27 18:35:25,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:25,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:25,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:25,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:25,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:25,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:35:25,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 508 transitions, 6366 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:35:25,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:25,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:35:25,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:26,938 INFO L124 PetriNetUnfolderBase]: 3731/6238 cut-off events. [2024-06-27 18:35:26,938 INFO L125 PetriNetUnfolderBase]: For 454609/454609 co-relation queries the response was YES. [2024-06-27 18:35:27,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39464 conditions, 6238 events. 3731/6238 cut-off events. For 454609/454609 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 42139 event pairs, 681 based on Foata normal form. 3/6182 useless extension candidates. Maximal degree in co-relation 39209. Up to 4388 conditions per place. [2024-06-27 18:35:27,030 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 462 selfloop transitions, 91 changer transitions 0/561 dead transitions. [2024-06-27 18:35:27,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 561 transitions, 8128 flow [2024-06-27 18:35:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-27 18:35:27,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-27 18:35:27,031 INFO L175 Difference]: Start difference. First operand has 525 places, 508 transitions, 6366 flow. Second operand 11 states and 208 transitions. [2024-06-27 18:35:27,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 561 transitions, 8128 flow [2024-06-27 18:35:30,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 561 transitions, 7961 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-27 18:35:30,396 INFO L231 Difference]: Finished difference. Result has 527 places, 510 transitions, 6414 flow [2024-06-27 18:35:30,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6199, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6414, PETRI_PLACES=527, PETRI_TRANSITIONS=510} [2024-06-27 18:35:30,397 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 484 predicate places. [2024-06-27 18:35:30,397 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 510 transitions, 6414 flow [2024-06-27 18:35:30,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:35:30,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:30,397 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 18:35:30,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 18:35:30,397 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:30,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:30,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1331796127, now seen corresponding path program 35 times [2024-06-27 18:35:30,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:30,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349857830] [2024-06-27 18:35:30,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:30,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:31,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:31,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349857830] [2024-06-27 18:35:31,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349857830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:31,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:31,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:31,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333875769] [2024-06-27 18:35:31,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:31,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:31,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:31,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:31,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:31,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:35:31,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 510 transitions, 6414 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:35:31,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:31,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:35:31,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:32,956 INFO L124 PetriNetUnfolderBase]: 3725/6220 cut-off events. [2024-06-27 18:35:32,956 INFO L125 PetriNetUnfolderBase]: For 418905/418905 co-relation queries the response was YES. [2024-06-27 18:35:33,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39332 conditions, 6220 events. 3725/6220 cut-off events. For 418905/418905 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 41995 event pairs, 681 based on Foata normal form. 3/6164 useless extension candidates. Maximal degree in co-relation 39076. Up to 4384 conditions per place. [2024-06-27 18:35:33,046 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 457 selfloop transitions, 92 changer transitions 0/557 dead transitions. [2024-06-27 18:35:33,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 557 transitions, 7790 flow [2024-06-27 18:35:33,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:33,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:35:33,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731934731934732 [2024-06-27 18:35:33,047 INFO L175 Difference]: Start difference. First operand has 527 places, 510 transitions, 6414 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:35:33,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 557 transitions, 7790 flow [2024-06-27 18:35:35,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 557 transitions, 7521 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 18:35:35,945 INFO L231 Difference]: Finished difference. Result has 528 places, 510 transitions, 6334 flow [2024-06-27 18:35:35,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6145, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6334, PETRI_PLACES=528, PETRI_TRANSITIONS=510} [2024-06-27 18:35:35,946 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 485 predicate places. [2024-06-27 18:35:35,946 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 510 transitions, 6334 flow [2024-06-27 18:35:35,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:35:35,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:35,946 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 18:35:35,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 18:35:35,946 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:35,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:35,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1499900838, now seen corresponding path program 1 times [2024-06-27 18:35:35,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:35,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016323301] [2024-06-27 18:35:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:35,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:36,876 INFO 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 18:35:36,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:36,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016323301] [2024-06-27 18:35:36,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016323301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:36,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:36,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:35:36,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176809187] [2024-06-27 18:35:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:36,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:35:36,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:36,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:35:36,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:35:37,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:35:37,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 510 transitions, 6334 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:37,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:37,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:35:37,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:39,000 INFO L124 PetriNetUnfolderBase]: 3757/6688 cut-off events. [2024-06-27 18:35:39,001 INFO L125 PetriNetUnfolderBase]: For 442326/442326 co-relation queries the response was YES. [2024-06-27 18:35:39,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40735 conditions, 6688 events. 3757/6688 cut-off events. For 442326/442326 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 48491 event pairs, 922 based on Foata normal form. 2/6623 useless extension candidates. Maximal degree in co-relation 40478. Up to 5580 conditions per place. [2024-06-27 18:35:39,104 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 511 selfloop transitions, 61 changer transitions 0/580 dead transitions. [2024-06-27 18:35:39,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 580 transitions, 8407 flow [2024-06-27 18:35:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:35:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:35:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 227 transitions. [2024-06-27 18:35:39,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4477317554240631 [2024-06-27 18:35:39,105 INFO L175 Difference]: Start difference. First operand has 528 places, 510 transitions, 6334 flow. Second operand 13 states and 227 transitions. [2024-06-27 18:35:39,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 580 transitions, 8407 flow [2024-06-27 18:35:42,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 580 transitions, 8200 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:35:42,318 INFO L231 Difference]: Finished difference. Result has 533 places, 516 transitions, 6538 flow [2024-06-27 18:35:42,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6127, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6538, PETRI_PLACES=533, PETRI_TRANSITIONS=516} [2024-06-27 18:35:42,319 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 490 predicate places. [2024-06-27 18:35:42,319 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 516 transitions, 6538 flow [2024-06-27 18:35:42,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:42,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:42,319 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 18:35:42,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 18:35:42,319 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:42,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1501778663, now seen corresponding path program 1 times [2024-06-27 18:35:42,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:42,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124784971] [2024-06-27 18:35:42,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:42,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:43,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:43,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124784971] [2024-06-27 18:35:43,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124784971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:43,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:43,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:35:43,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138981692] [2024-06-27 18:35:43,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:43,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:35:43,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:43,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:35:43,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:35:43,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:35:43,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 516 transitions, 6538 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:43,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:43,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:35:43,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:45,450 INFO L124 PetriNetUnfolderBase]: 3790/6729 cut-off events. [2024-06-27 18:35:45,450 INFO L125 PetriNetUnfolderBase]: For 465267/465267 co-relation queries the response was YES. [2024-06-27 18:35:45,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40949 conditions, 6729 events. 3790/6729 cut-off events. For 465267/465267 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 48856 event pairs, 963 based on Foata normal form. 3/6661 useless extension candidates. Maximal degree in co-relation 40688. Up to 5716 conditions per place. [2024-06-27 18:35:45,564 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 534 selfloop transitions, 49 changer transitions 0/591 dead transitions. [2024-06-27 18:35:45,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 591 transitions, 8172 flow [2024-06-27 18:35:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 18:35:45,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 18:35:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 258 transitions. [2024-06-27 18:35:45,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441025641025641 [2024-06-27 18:35:45,565 INFO L175 Difference]: Start difference. First operand has 533 places, 516 transitions, 6538 flow. Second operand 15 states and 258 transitions. [2024-06-27 18:35:45,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 591 transitions, 8172 flow [2024-06-27 18:35:49,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 591 transitions, 7931 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-06-27 18:35:49,755 INFO L231 Difference]: Finished difference. Result has 541 places, 519 transitions, 6488 flow [2024-06-27 18:35:49,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6297, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6488, PETRI_PLACES=541, PETRI_TRANSITIONS=519} [2024-06-27 18:35:49,755 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 498 predicate places. [2024-06-27 18:35:49,756 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 519 transitions, 6488 flow [2024-06-27 18:35:49,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:49,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:49,756 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 18:35:49,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 18:35:49,756 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:49,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:49,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1501778508, now seen corresponding path program 2 times [2024-06-27 18:35:49,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:49,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500835877] [2024-06-27 18:35:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:49,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:50,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500835877] [2024-06-27 18:35:50,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500835877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:50,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:50,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:35:50,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035438264] [2024-06-27 18:35:50,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:50,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:35:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:50,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:35:50,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:35:50,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:35:50,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 519 transitions, 6488 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:50,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:50,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:35:50,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:53,111 INFO L124 PetriNetUnfolderBase]: 3803/6742 cut-off events. [2024-06-27 18:35:53,111 INFO L125 PetriNetUnfolderBase]: For 459679/459679 co-relation queries the response was YES. [2024-06-27 18:35:53,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41473 conditions, 6742 events. 3803/6742 cut-off events. For 459679/459679 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 48934 event pairs, 985 based on Foata normal form. 2/6672 useless extension candidates. Maximal degree in co-relation 41211. Up to 5797 conditions per place. [2024-06-27 18:35:53,252 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 531 selfloop transitions, 45 changer transitions 0/584 dead transitions. [2024-06-27 18:35:53,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 584 transitions, 8005 flow [2024-06-27 18:35:53,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:35:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:35:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 237 transitions. [2024-06-27 18:35:53,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340659340659341 [2024-06-27 18:35:53,253 INFO L175 Difference]: Start difference. First operand has 541 places, 519 transitions, 6488 flow. Second operand 14 states and 237 transitions. [2024-06-27 18:35:53,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 584 transitions, 8005 flow [2024-06-27 18:35:57,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 584 transitions, 7840 flow, removed 36 selfloop flow, removed 13 redundant places. [2024-06-27 18:35:57,890 INFO L231 Difference]: Finished difference. Result has 542 places, 520 transitions, 6450 flow [2024-06-27 18:35:57,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6323, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6450, PETRI_PLACES=542, PETRI_TRANSITIONS=520} [2024-06-27 18:35:57,890 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 499 predicate places. [2024-06-27 18:35:57,890 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 520 transitions, 6450 flow [2024-06-27 18:35:57,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:57,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:57,891 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 18:35:57,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 18:35:57,891 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:57,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:57,891 INFO L85 PathProgramCache]: Analyzing trace with hash -185750476, now seen corresponding path program 3 times [2024-06-27 18:35:57,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:57,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019239436] [2024-06-27 18:35:57,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:57,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:58,864 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 18:35:58,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:58,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019239436] [2024-06-27 18:35:58,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019239436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:58,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:58,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:35:58,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569462879] [2024-06-27 18:35:58,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:58,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:35:58,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:58,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:35:58,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:35:58,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:35:58,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 520 transitions, 6450 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:58,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:58,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:35:58,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:01,060 INFO L124 PetriNetUnfolderBase]: 3854/6838 cut-off events. [2024-06-27 18:36:01,060 INFO L125 PetriNetUnfolderBase]: For 463339/463339 co-relation queries the response was YES. [2024-06-27 18:36:01,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41776 conditions, 6838 events. 3854/6838 cut-off events. For 463339/463339 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 49857 event pairs, 988 based on Foata normal form. 2/6768 useless extension candidates. Maximal degree in co-relation 41513. Up to 5824 conditions per place. [2024-06-27 18:36:01,176 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 516 selfloop transitions, 66 changer transitions 0/590 dead transitions. [2024-06-27 18:36:01,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 590 transitions, 8124 flow [2024-06-27 18:36:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:36:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:36:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 227 transitions. [2024-06-27 18:36:01,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4477317554240631 [2024-06-27 18:36:01,177 INFO L175 Difference]: Start difference. First operand has 542 places, 520 transitions, 6450 flow. Second operand 13 states and 227 transitions. [2024-06-27 18:36:01,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 590 transitions, 8124 flow [2024-06-27 18:36:06,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 590 transitions, 7984 flow, removed 24 selfloop flow, removed 12 redundant places. [2024-06-27 18:36:06,331 INFO L231 Difference]: Finished difference. Result has 544 places, 529 transitions, 6663 flow [2024-06-27 18:36:06,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6338, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6663, PETRI_PLACES=544, PETRI_TRANSITIONS=529} [2024-06-27 18:36:06,332 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 501 predicate places. [2024-06-27 18:36:06,332 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 529 transitions, 6663 flow [2024-06-27 18:36:06,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:06,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:06,332 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 18:36:06,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 18:36:06,332 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:06,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash -958527842, now seen corresponding path program 4 times [2024-06-27 18:36:06,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:06,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341035674] [2024-06-27 18:36:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:06,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:07,331 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 18:36:07,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:07,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341035674] [2024-06-27 18:36:07,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341035674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:07,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:07,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:07,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350838254] [2024-06-27 18:36:07,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:07,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:07,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:07,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:07,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:07,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:36:07,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 529 transitions, 6663 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:07,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:07,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:36:07,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:09,440 INFO L124 PetriNetUnfolderBase]: 3852/6834 cut-off events. [2024-06-27 18:36:09,440 INFO L125 PetriNetUnfolderBase]: For 438719/438719 co-relation queries the response was YES. [2024-06-27 18:36:09,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41308 conditions, 6834 events. 3852/6834 cut-off events. For 438719/438719 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 49780 event pairs, 993 based on Foata normal form. 2/6764 useless extension candidates. Maximal degree in co-relation 41043. Up to 5881 conditions per place. [2024-06-27 18:36:09,554 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 537 selfloop transitions, 39 changer transitions 0/584 dead transitions. [2024-06-27 18:36:09,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 584 transitions, 8124 flow [2024-06-27 18:36:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:36:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:36:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-06-27 18:36:09,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2024-06-27 18:36:09,555 INFO L175 Difference]: Start difference. First operand has 544 places, 529 transitions, 6663 flow. Second operand 12 states and 207 transitions. [2024-06-27 18:36:09,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 584 transitions, 8124 flow [2024-06-27 18:36:14,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 584 transitions, 7884 flow, removed 77 selfloop flow, removed 8 redundant places. [2024-06-27 18:36:14,224 INFO L231 Difference]: Finished difference. Result has 548 places, 530 transitions, 6542 flow [2024-06-27 18:36:14,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6447, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6542, PETRI_PLACES=548, PETRI_TRANSITIONS=530} [2024-06-27 18:36:14,224 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 505 predicate places. [2024-06-27 18:36:14,224 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 530 transitions, 6542 flow [2024-06-27 18:36:14,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:14,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:14,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:14,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 18:36:14,225 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:14,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash -814281897, now seen corresponding path program 2 times [2024-06-27 18:36:14,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:14,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534385789] [2024-06-27 18:36:14,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:14,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:15,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:15,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534385789] [2024-06-27 18:36:15,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534385789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:15,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:15,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:15,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487457722] [2024-06-27 18:36:15,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:15,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:15,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:15,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:15,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:15,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:36:15,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 530 transitions, 6542 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:15,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:15,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:36:15,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:17,512 INFO L124 PetriNetUnfolderBase]: 3885/6561 cut-off events. [2024-06-27 18:36:17,512 INFO L125 PetriNetUnfolderBase]: For 458829/458829 co-relation queries the response was YES. [2024-06-27 18:36:17,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41178 conditions, 6561 events. 3885/6561 cut-off events. For 458829/458829 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 45155 event pairs, 431 based on Foata normal form. 3/6519 useless extension candidates. Maximal degree in co-relation 40911. Up to 2897 conditions per place. [2024-06-27 18:36:17,599 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 393 selfloop transitions, 196 changer transitions 0/597 dead transitions. [2024-06-27 18:36:17,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 597 transitions, 8183 flow [2024-06-27 18:36:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:36:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:36:17,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-06-27 18:36:17,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021367521367521 [2024-06-27 18:36:17,600 INFO L175 Difference]: Start difference. First operand has 548 places, 530 transitions, 6542 flow. Second operand 12 states and 235 transitions. [2024-06-27 18:36:17,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 597 transitions, 8183 flow [2024-06-27 18:36:22,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 597 transitions, 8111 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:36:22,095 INFO L231 Difference]: Finished difference. Result has 552 places, 533 transitions, 6960 flow [2024-06-27 18:36:22,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6470, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6960, PETRI_PLACES=552, PETRI_TRANSITIONS=533} [2024-06-27 18:36:22,096 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 509 predicate places. [2024-06-27 18:36:22,096 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 533 transitions, 6960 flow [2024-06-27 18:36:22,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:22,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:22,096 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 18:36:22,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 18:36:22,096 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:22,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash -814483707, now seen corresponding path program 3 times [2024-06-27 18:36:22,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:22,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803136447] [2024-06-27 18:36:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:22,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:22,948 INFO 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 18:36:22,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:22,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803136447] [2024-06-27 18:36:22,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803136447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:22,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:22,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:22,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305805052] [2024-06-27 18:36:22,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:22,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:22,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:22,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:23,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:36:23,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 533 transitions, 6960 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:23,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:23,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:36:23,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:25,030 INFO L124 PetriNetUnfolderBase]: 3918/6811 cut-off events. [2024-06-27 18:36:25,030 INFO L125 PetriNetUnfolderBase]: For 475321/475321 co-relation queries the response was YES. [2024-06-27 18:36:25,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44143 conditions, 6811 events. 3918/6811 cut-off events. For 475321/475321 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 48421 event pairs, 462 based on Foata normal form. 3/6769 useless extension candidates. Maximal degree in co-relation 43875. Up to 2948 conditions per place. [2024-06-27 18:36:25,146 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 401 selfloop transitions, 194 changer transitions 0/603 dead transitions. [2024-06-27 18:36:25,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 603 transitions, 8653 flow [2024-06-27 18:36:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:36:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:36:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 239 transitions. [2024-06-27 18:36:25,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106837606837606 [2024-06-27 18:36:25,147 INFO L175 Difference]: Start difference. First operand has 552 places, 533 transitions, 6960 flow. Second operand 12 states and 239 transitions. [2024-06-27 18:36:25,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 603 transitions, 8653 flow [2024-06-27 18:36:30,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 603 transitions, 8187 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-27 18:36:30,260 INFO L231 Difference]: Finished difference. Result has 554 places, 536 transitions, 6986 flow [2024-06-27 18:36:30,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6494, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6986, PETRI_PLACES=554, PETRI_TRANSITIONS=536} [2024-06-27 18:36:30,261 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 511 predicate places. [2024-06-27 18:36:30,261 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 536 transitions, 6986 flow [2024-06-27 18:36:30,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:30,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:30,261 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 18:36:30,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 18:36:30,261 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:30,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:30,261 INFO L85 PathProgramCache]: Analyzing trace with hash -814489442, now seen corresponding path program 5 times [2024-06-27 18:36:30,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:30,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914233075] [2024-06-27 18:36:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:30,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:31,358 INFO 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 18:36:31,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:31,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914233075] [2024-06-27 18:36:31,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914233075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:31,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:31,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:31,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117604304] [2024-06-27 18:36:31,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:31,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:31,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:31,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:31,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:31,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:36:31,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 536 transitions, 6986 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:31,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:31,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:36:31,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:33,416 INFO L124 PetriNetUnfolderBase]: 3932/6586 cut-off events. [2024-06-27 18:36:33,416 INFO L125 PetriNetUnfolderBase]: For 465456/465456 co-relation queries the response was YES. [2024-06-27 18:36:33,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44151 conditions, 6586 events. 3932/6586 cut-off events. For 465456/465456 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 45089 event pairs, 747 based on Foata normal form. 2/6530 useless extension candidates. Maximal degree in co-relation 43882. Up to 5641 conditions per place. [2024-06-27 18:36:33,538 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 478 selfloop transitions, 102 changer transitions 0/588 dead transitions. [2024-06-27 18:36:33,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 588 transitions, 8477 flow [2024-06-27 18:36:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:36:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:36:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-27 18:36:33,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452991452991453 [2024-06-27 18:36:33,539 INFO L175 Difference]: Start difference. First operand has 554 places, 536 transitions, 6986 flow. Second operand 12 states and 212 transitions. [2024-06-27 18:36:33,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 588 transitions, 8477 flow [2024-06-27 18:36:39,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 588 transitions, 8009 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-27 18:36:39,378 INFO L231 Difference]: Finished difference. Result has 557 places, 539 transitions, 6799 flow [2024-06-27 18:36:39,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6518, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6799, PETRI_PLACES=557, PETRI_TRANSITIONS=539} [2024-06-27 18:36:39,378 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 514 predicate places. [2024-06-27 18:36:39,378 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 539 transitions, 6799 flow [2024-06-27 18:36:39,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:39,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:39,379 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 18:36:39,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 18:36:39,379 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:39,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash -814489287, now seen corresponding path program 4 times [2024-06-27 18:36:39,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:39,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686336169] [2024-06-27 18:36:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:39,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:40,224 INFO 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 18:36:40,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:40,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686336169] [2024-06-27 18:36:40,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686336169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:40,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:40,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:40,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320797332] [2024-06-27 18:36:40,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:40,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:40,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:40,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:40,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:40,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:36:40,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 539 transitions, 6799 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:40,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:40,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:36:40,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:42,723 INFO L124 PetriNetUnfolderBase]: 3943/6675 cut-off events. [2024-06-27 18:36:42,723 INFO L125 PetriNetUnfolderBase]: For 451229/451229 co-relation queries the response was YES. [2024-06-27 18:36:42,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42873 conditions, 6675 events. 3943/6675 cut-off events. For 451229/451229 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 46137 event pairs, 427 based on Foata normal form. 1/6632 useless extension candidates. Maximal degree in co-relation 42602. Up to 2932 conditions per place. [2024-06-27 18:36:42,823 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 405 selfloop transitions, 201 changer transitions 0/614 dead transitions. [2024-06-27 18:36:42,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 614 transitions, 8538 flow [2024-06-27 18:36:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:36:42,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:36:42,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 258 transitions. [2024-06-27 18:36:42,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088757396449705 [2024-06-27 18:36:42,825 INFO L175 Difference]: Start difference. First operand has 557 places, 539 transitions, 6799 flow. Second operand 13 states and 258 transitions. [2024-06-27 18:36:42,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 614 transitions, 8538 flow [2024-06-27 18:36:47,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 614 transitions, 8299 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:47,722 INFO L231 Difference]: Finished difference. Result has 561 places, 541 transitions, 7047 flow [2024-06-27 18:36:47,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6560, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7047, PETRI_PLACES=561, PETRI_TRANSITIONS=541} [2024-06-27 18:36:47,722 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 518 predicate places. [2024-06-27 18:36:47,722 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 541 transitions, 7047 flow [2024-06-27 18:36:47,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:47,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:47,722 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 18:36:47,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 18:36:47,723 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:47,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:47,723 INFO L85 PathProgramCache]: Analyzing trace with hash 867679177, now seen corresponding path program 5 times [2024-06-27 18:36:47,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:47,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186625136] [2024-06-27 18:36:47,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:47,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:48,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:48,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186625136] [2024-06-27 18:36:48,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186625136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:48,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:48,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:48,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782343058] [2024-06-27 18:36:48,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:48,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:48,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:48,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:48,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:48,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:36:48,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 541 transitions, 7047 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:48,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:48,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:36:48,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:51,039 INFO L124 PetriNetUnfolderBase]: 3966/7035 cut-off events. [2024-06-27 18:36:51,039 INFO L125 PetriNetUnfolderBase]: For 462622/462622 co-relation queries the response was YES. [2024-06-27 18:36:51,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45304 conditions, 7035 events. 3966/7035 cut-off events. For 462622/462622 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 51329 event pairs, 437 based on Foata normal form. 1/7024 useless extension candidates. Maximal degree in co-relation 45032. Up to 4868 conditions per place. [2024-06-27 18:36:51,162 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 498 selfloop transitions, 175 changer transitions 0/681 dead transitions. [2024-06-27 18:36:51,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 681 transitions, 9636 flow [2024-06-27 18:36:51,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:36:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:36:51,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 227 transitions. [2024-06-27 18:36:51,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48504273504273504 [2024-06-27 18:36:51,163 INFO L175 Difference]: Start difference. First operand has 561 places, 541 transitions, 7047 flow. Second operand 12 states and 227 transitions. [2024-06-27 18:36:51,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 681 transitions, 9636 flow [2024-06-27 18:36:56,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 681 transitions, 9088 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-06-27 18:36:56,889 INFO L231 Difference]: Finished difference. Result has 568 places, 603 transitions, 7905 flow [2024-06-27 18:36:56,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6590, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7905, PETRI_PLACES=568, PETRI_TRANSITIONS=603} [2024-06-27 18:36:56,889 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 525 predicate places. [2024-06-27 18:36:56,889 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 603 transitions, 7905 flow [2024-06-27 18:36:56,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:56,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:56,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:56,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 18:36:56,890 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:56,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:56,890 INFO L85 PathProgramCache]: Analyzing trace with hash 867673597, now seen corresponding path program 6 times [2024-06-27 18:36:56,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:56,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612404358] [2024-06-27 18:36:56,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:56,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:57,748 INFO 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 18:36:57,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:57,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612404358] [2024-06-27 18:36:57,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612404358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:57,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:57,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:57,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861157454] [2024-06-27 18:36:57,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:57,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:57,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:57,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:57,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:57,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:36:57,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 603 transitions, 7905 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:57,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:57,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:36:57,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:00,114 INFO L124 PetriNetUnfolderBase]: 4002/6803 cut-off events. [2024-06-27 18:37:00,114 INFO L125 PetriNetUnfolderBase]: For 509301/509301 co-relation queries the response was YES. [2024-06-27 18:37:00,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46790 conditions, 6803 events. 4002/6803 cut-off events. For 509301/509301 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 47313 event pairs, 454 based on Foata normal form. 3/6763 useless extension candidates. Maximal degree in co-relation 46511. Up to 3064 conditions per place. [2024-06-27 18:37:00,238 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 429 selfloop transitions, 242 changer transitions 0/679 dead transitions. [2024-06-27 18:37:00,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 679 transitions, 9907 flow [2024-06-27 18:37:00,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:37:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:37:00,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 255 transitions. [2024-06-27 18:37:00,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029585798816568 [2024-06-27 18:37:00,239 INFO L175 Difference]: Start difference. First operand has 568 places, 603 transitions, 7905 flow. Second operand 13 states and 255 transitions. [2024-06-27 18:37:00,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 679 transitions, 9907 flow [2024-06-27 18:37:06,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 679 transitions, 9462 flow, removed 213 selfloop flow, removed 3 redundant places. [2024-06-27 18:37:06,059 INFO L231 Difference]: Finished difference. Result has 578 places, 608 transitions, 8242 flow [2024-06-27 18:37:06,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7630, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8242, PETRI_PLACES=578, PETRI_TRANSITIONS=608} [2024-06-27 18:37:06,060 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 535 predicate places. [2024-06-27 18:37:06,060 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 608 transitions, 8242 flow [2024-06-27 18:37:06,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:06,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:06,060 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 18:37:06,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 18:37:06,060 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:06,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash -819851822, now seen corresponding path program 6 times [2024-06-27 18:37:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:06,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979551516] [2024-06-27 18:37:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:06,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:07,016 INFO 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 18:37:07,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:07,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979551516] [2024-06-27 18:37:07,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979551516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:07,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:07,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:07,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449356537] [2024-06-27 18:37:07,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:07,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:07,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:07,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:07,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:07,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:37:07,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 608 transitions, 8242 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:07,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:07,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:37:07,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:09,157 INFO L124 PetriNetUnfolderBase]: 4015/6740 cut-off events. [2024-06-27 18:37:09,157 INFO L125 PetriNetUnfolderBase]: For 476905/476905 co-relation queries the response was YES. [2024-06-27 18:37:09,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44601 conditions, 6740 events. 4015/6740 cut-off events. For 476905/476905 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 46322 event pairs, 651 based on Foata normal form. 2/6685 useless extension candidates. Maximal degree in co-relation 44321. Up to 5774 conditions per place. [2024-06-27 18:37:09,277 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 550 selfloop transitions, 100 changer transitions 0/658 dead transitions. [2024-06-27 18:37:09,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 658 transitions, 9856 flow [2024-06-27 18:37:09,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:37:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:37:09,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2024-06-27 18:37:09,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-27 18:37:09,279 INFO L175 Difference]: Start difference. First operand has 578 places, 608 transitions, 8242 flow. Second operand 12 states and 213 transitions. [2024-06-27 18:37:09,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 658 transitions, 9856 flow [2024-06-27 18:37:15,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 658 transitions, 9296 flow, removed 42 selfloop flow, removed 11 redundant places. [2024-06-27 18:37:15,921 INFO L231 Difference]: Finished difference. Result has 579 places, 609 transitions, 7935 flow [2024-06-27 18:37:15,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7682, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7935, PETRI_PLACES=579, PETRI_TRANSITIONS=609} [2024-06-27 18:37:15,921 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 536 predicate places. [2024-06-27 18:37:15,921 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 609 transitions, 7935 flow [2024-06-27 18:37:15,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:15,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:15,921 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 18:37:15,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 18:37:15,922 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:15,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash 867529447, now seen corresponding path program 7 times [2024-06-27 18:37:15,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:15,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162241732] [2024-06-27 18:37:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:15,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:16,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:16,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162241732] [2024-06-27 18:37:16,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162241732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:16,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:16,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:16,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565620141] [2024-06-27 18:37:16,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:16,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:16,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:16,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:16,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:17,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:37:17,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 609 transitions, 7935 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:17,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:17,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:37:17,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:19,407 INFO L124 PetriNetUnfolderBase]: 4027/7028 cut-off events. [2024-06-27 18:37:19,407 INFO L125 PetriNetUnfolderBase]: For 460669/460669 co-relation queries the response was YES. [2024-06-27 18:37:19,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43551 conditions, 7028 events. 4027/7028 cut-off events. For 460669/460669 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 50467 event pairs, 468 based on Foata normal form. 1/6987 useless extension candidates. Maximal degree in co-relation 43270. Up to 2981 conditions per place. [2024-06-27 18:37:19,537 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 425 selfloop transitions, 257 changer transitions 0/690 dead transitions. [2024-06-27 18:37:19,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 690 transitions, 9802 flow [2024-06-27 18:37:19,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:37:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:37:19,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 275 transitions. [2024-06-27 18:37:19,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036630036630036 [2024-06-27 18:37:19,538 INFO L175 Difference]: Start difference. First operand has 579 places, 609 transitions, 7935 flow. Second operand 14 states and 275 transitions. [2024-06-27 18:37:19,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 690 transitions, 9802 flow [2024-06-27 18:37:25,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 690 transitions, 9562 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 18:37:25,193 INFO L231 Difference]: Finished difference. Result has 584 places, 613 transitions, 8323 flow [2024-06-27 18:37:25,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7695, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8323, PETRI_PLACES=584, PETRI_TRANSITIONS=613} [2024-06-27 18:37:25,194 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 541 predicate places. [2024-06-27 18:37:25,194 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 613 transitions, 8323 flow [2024-06-27 18:37:25,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:25,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:25,195 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 18:37:25,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 18:37:25,195 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:25,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:25,195 INFO L85 PathProgramCache]: Analyzing trace with hash -819995972, now seen corresponding path program 7 times [2024-06-27 18:37:25,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:25,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174215345] [2024-06-27 18:37:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:25,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:26,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:26,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174215345] [2024-06-27 18:37:26,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174215345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:26,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:26,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:26,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656450604] [2024-06-27 18:37:26,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:26,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:26,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:26,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:26,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:37:26,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 613 transitions, 8323 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:26,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:26,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:37:26,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:28,580 INFO L124 PetriNetUnfolderBase]: 4040/6786 cut-off events. [2024-06-27 18:37:28,581 INFO L125 PetriNetUnfolderBase]: For 483213/483213 co-relation queries the response was YES. [2024-06-27 18:37:28,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44748 conditions, 6786 events. 4040/6786 cut-off events. For 483213/483213 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 46826 event pairs, 656 based on Foata normal form. 2/6731 useless extension candidates. Maximal degree in co-relation 44465. Up to 5771 conditions per place. [2024-06-27 18:37:28,708 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 552 selfloop transitions, 107 changer transitions 0/667 dead transitions. [2024-06-27 18:37:28,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 667 transitions, 9983 flow [2024-06-27 18:37:28,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:37:28,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:37:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 229 transitions. [2024-06-27 18:37:28,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4516765285996055 [2024-06-27 18:37:28,709 INFO L175 Difference]: Start difference. First operand has 584 places, 613 transitions, 8323 flow. Second operand 13 states and 229 transitions. [2024-06-27 18:37:28,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 667 transitions, 9983 flow [2024-06-27 18:37:35,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 667 transitions, 9426 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-27 18:37:35,610 INFO L231 Difference]: Finished difference. Result has 586 places, 614 transitions, 8037 flow [2024-06-27 18:37:35,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7766, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8037, PETRI_PLACES=586, PETRI_TRANSITIONS=614} [2024-06-27 18:37:35,611 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 543 predicate places. [2024-06-27 18:37:35,611 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 614 transitions, 8037 flow [2024-06-27 18:37:35,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:35,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:35,611 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 18:37:35,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 18:37:35,611 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:35,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:35,612 INFO L85 PathProgramCache]: Analyzing trace with hash -819999692, now seen corresponding path program 8 times [2024-06-27 18:37:35,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:35,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361266045] [2024-06-27 18:37:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:35,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:36,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:36,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361266045] [2024-06-27 18:37:36,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361266045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:36,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:36,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:36,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647414249] [2024-06-27 18:37:36,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:36,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:36,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:36,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:36,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:36,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:37:36,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 614 transitions, 8037 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:36,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:36,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:37:36,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:38,791 INFO L124 PetriNetUnfolderBase]: 4053/6809 cut-off events. [2024-06-27 18:37:38,791 INFO L125 PetriNetUnfolderBase]: For 487137/487137 co-relation queries the response was YES. [2024-06-27 18:37:38,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43724 conditions, 6809 events. 4053/6809 cut-off events. For 487137/487137 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 47024 event pairs, 645 based on Foata normal form. 2/6754 useless extension candidates. Maximal degree in co-relation 43440. Up to 5735 conditions per place. [2024-06-27 18:37:38,913 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 549 selfloop transitions, 108 changer transitions 0/665 dead transitions. [2024-06-27 18:37:38,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 665 transitions, 9671 flow [2024-06-27 18:37:38,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:37:38,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:37:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 215 transitions. [2024-06-27 18:37:38,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594017094017094 [2024-06-27 18:37:38,914 INFO L175 Difference]: Start difference. First operand has 586 places, 614 transitions, 8037 flow. Second operand 12 states and 215 transitions. [2024-06-27 18:37:38,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 665 transitions, 9671 flow [2024-06-27 18:37:45,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 665 transitions, 9413 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-27 18:37:45,545 INFO L231 Difference]: Finished difference. Result has 587 places, 615 transitions, 8052 flow [2024-06-27 18:37:45,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7781, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8052, PETRI_PLACES=587, PETRI_TRANSITIONS=615} [2024-06-27 18:37:45,545 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 544 predicate places. [2024-06-27 18:37:45,545 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 615 transitions, 8052 flow [2024-06-27 18:37:45,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:45,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:45,545 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 18:37:45,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 18:37:45,546 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:45,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:45,546 INFO L85 PathProgramCache]: Analyzing trace with hash 19849886, now seen corresponding path program 9 times [2024-06-27 18:37:45,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:45,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924106589] [2024-06-27 18:37:45,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:45,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:46,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:46,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924106589] [2024-06-27 18:37:46,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924106589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:46,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:46,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:46,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824499204] [2024-06-27 18:37:46,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:46,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:46,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:46,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:46,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:37:46,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 615 transitions, 8052 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:46,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:46,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:37:46,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:48,797 INFO L124 PetriNetUnfolderBase]: 4066/6850 cut-off events. [2024-06-27 18:37:48,797 INFO L125 PetriNetUnfolderBase]: For 487925/487925 co-relation queries the response was YES. [2024-06-27 18:37:48,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43913 conditions, 6850 events. 4066/6850 cut-off events. For 487925/487925 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 47562 event pairs, 688 based on Foata normal form. 2/6794 useless extension candidates. Maximal degree in co-relation 43628. Up to 5830 conditions per place. [2024-06-27 18:37:48,917 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 555 selfloop transitions, 101 changer transitions 0/664 dead transitions. [2024-06-27 18:37:48,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 664 transitions, 9685 flow [2024-06-27 18:37:48,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:37:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:37:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 227 transitions. [2024-06-27 18:37:48,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4477317554240631 [2024-06-27 18:37:48,918 INFO L175 Difference]: Start difference. First operand has 587 places, 615 transitions, 8052 flow. Second operand 13 states and 227 transitions. [2024-06-27 18:37:48,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 664 transitions, 9685 flow [2024-06-27 18:37:54,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 664 transitions, 9427 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 18:37:54,801 INFO L231 Difference]: Finished difference. Result has 590 places, 616 transitions, 8053 flow [2024-06-27 18:37:54,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7794, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8053, PETRI_PLACES=590, PETRI_TRANSITIONS=616} [2024-06-27 18:37:54,801 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 547 predicate places. [2024-06-27 18:37:54,801 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 616 transitions, 8053 flow [2024-06-27 18:37:54,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:54,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:54,801 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 18:37:54,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 18:37:54,801 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:54,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash 19994191, now seen corresponding path program 8 times [2024-06-27 18:37:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:54,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439093185] [2024-06-27 18:37:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:55,650 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 18:37:55,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:55,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439093185] [2024-06-27 18:37:55,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439093185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:55,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:55,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:55,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016087043] [2024-06-27 18:37:55,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:55,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:55,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:55,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:55,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:55,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:37:55,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 616 transitions, 8053 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:55,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:55,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:37:55,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:58,070 INFO L124 PetriNetUnfolderBase]: 4108/7025 cut-off events. [2024-06-27 18:37:58,070 INFO L125 PetriNetUnfolderBase]: For 515038/515038 co-relation queries the response was YES. [2024-06-27 18:37:58,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44703 conditions, 7025 events. 4108/7025 cut-off events. For 515038/515038 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 49613 event pairs, 736 based on Foata normal form. 3/6975 useless extension candidates. Maximal degree in co-relation 44417. Up to 3245 conditions per place. [2024-06-27 18:37:58,198 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 465 selfloop transitions, 218 changer transitions 0/691 dead transitions. [2024-06-27 18:37:58,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 691 transitions, 9930 flow [2024-06-27 18:37:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:37:58,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:37:58,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 253 transitions. [2024-06-27 18:37:58,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4990138067061144 [2024-06-27 18:37:58,199 INFO L175 Difference]: Start difference. First operand has 590 places, 616 transitions, 8053 flow. Second operand 13 states and 253 transitions. [2024-06-27 18:37:58,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 691 transitions, 9930 flow [2024-06-27 18:38:04,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 691 transitions, 9681 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-27 18:38:04,609 INFO L231 Difference]: Finished difference. Result has 593 places, 621 transitions, 8385 flow [2024-06-27 18:38:04,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7807, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8385, PETRI_PLACES=593, PETRI_TRANSITIONS=621} [2024-06-27 18:38:04,610 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 550 predicate places. [2024-06-27 18:38:04,610 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 621 transitions, 8385 flow [2024-06-27 18:38:04,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:04,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:04,610 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 18:38:04,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 18:38:04,610 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:04,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:04,610 INFO L85 PathProgramCache]: Analyzing trace with hash 346400775, now seen corresponding path program 9 times [2024-06-27 18:38:04,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:04,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013362162] [2024-06-27 18:38:04,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:04,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:05,512 INFO 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 18:38:05,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:05,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013362162] [2024-06-27 18:38:05,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013362162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:05,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:05,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:38:05,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354474555] [2024-06-27 18:38:05,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:05,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:38:05,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:05,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:38:05,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:38:05,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:38:05,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 621 transitions, 8385 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:05,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:05,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:38:05,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:07,918 INFO L124 PetriNetUnfolderBase]: 4141/7100 cut-off events. [2024-06-27 18:38:07,919 INFO L125 PetriNetUnfolderBase]: For 528324/528324 co-relation queries the response was YES. [2024-06-27 18:38:08,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46510 conditions, 7100 events. 4141/7100 cut-off events. For 528324/528324 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 50222 event pairs, 736 based on Foata normal form. 3/7048 useless extension candidates. Maximal degree in co-relation 46222. Up to 3310 conditions per place. [2024-06-27 18:38:08,045 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 472 selfloop transitions, 213 changer transitions 0/693 dead transitions. [2024-06-27 18:38:08,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 693 transitions, 10243 flow [2024-06-27 18:38:08,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:38:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:38:08,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 243 transitions. [2024-06-27 18:38:08,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-06-27 18:38:08,052 INFO L175 Difference]: Start difference. First operand has 593 places, 621 transitions, 8385 flow. Second operand 12 states and 243 transitions. [2024-06-27 18:38:08,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 693 transitions, 10243 flow [2024-06-27 18:38:13,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 693 transitions, 9718 flow, removed 49 selfloop flow, removed 10 redundant places. [2024-06-27 18:38:13,924 INFO L231 Difference]: Finished difference. Result has 595 places, 624 transitions, 8411 flow [2024-06-27 18:38:13,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7860, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8411, PETRI_PLACES=595, PETRI_TRANSITIONS=624} [2024-06-27 18:38:13,924 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 552 predicate places. [2024-06-27 18:38:13,924 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 624 transitions, 8411 flow [2024-06-27 18:38:13,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:13,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:13,925 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 18:38:13,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 18:38:13,925 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:13,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:13,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1712881680, now seen corresponding path program 10 times [2024-06-27 18:38:13,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:13,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464231144] [2024-06-27 18:38:13,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:13,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:14,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:14,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464231144] [2024-06-27 18:38:14,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464231144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:14,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:14,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:38:14,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997196082] [2024-06-27 18:38:14,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:14,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:38:14,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:14,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:38:14,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:38:14,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:38:14,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 624 transitions, 8411 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:14,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:14,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:38:14,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:17,087 INFO L124 PetriNetUnfolderBase]: 4154/6989 cut-off events. [2024-06-27 18:38:17,087 INFO L125 PetriNetUnfolderBase]: For 511580/511580 co-relation queries the response was YES. [2024-06-27 18:38:17,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46131 conditions, 6989 events. 4154/6989 cut-off events. For 511580/511580 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 48602 event pairs, 712 based on Foata normal form. 2/6931 useless extension candidates. Maximal degree in co-relation 45842. Up to 6001 conditions per place. [2024-06-27 18:38:17,218 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 567 selfloop transitions, 94 changer transitions 0/669 dead transitions. [2024-06-27 18:38:17,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 669 transitions, 10030 flow [2024-06-27 18:38:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:38:17,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:38:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-27 18:38:17,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452991452991453 [2024-06-27 18:38:17,219 INFO L175 Difference]: Start difference. First operand has 595 places, 624 transitions, 8411 flow. Second operand 12 states and 212 transitions. [2024-06-27 18:38:17,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 669 transitions, 10030 flow [2024-06-27 18:38:23,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 669 transitions, 9505 flow, removed 52 selfloop flow, removed 10 redundant places. [2024-06-27 18:38:23,983 INFO L231 Difference]: Finished difference. Result has 597 places, 625 transitions, 8133 flow [2024-06-27 18:38:23,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7886, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8133, PETRI_PLACES=597, PETRI_TRANSITIONS=625} [2024-06-27 18:38:23,983 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 554 predicate places. [2024-06-27 18:38:23,983 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 625 transitions, 8133 flow [2024-06-27 18:38:23,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:23,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:23,984 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 18:38:23,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 18:38:23,984 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:23,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash 19850041, now seen corresponding path program 10 times [2024-06-27 18:38:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:23,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473954854] [2024-06-27 18:38:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:24,880 INFO 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 18:38:24,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:24,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473954854] [2024-06-27 18:38:24,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473954854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:24,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:24,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:38:24,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146713178] [2024-06-27 18:38:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:24,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:38:24,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:38:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:38:24,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:38:24,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 625 transitions, 8133 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:24,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:24,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:38:24,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:27,374 INFO L124 PetriNetUnfolderBase]: 4204/7206 cut-off events. [2024-06-27 18:38:27,374 INFO L125 PetriNetUnfolderBase]: For 553170/553170 co-relation queries the response was YES. [2024-06-27 18:38:27,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46540 conditions, 7206 events. 4204/7206 cut-off events. For 553170/553170 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 51145 event pairs, 725 based on Foata normal form. 1/7153 useless extension candidates. Maximal degree in co-relation 46250. Up to 3204 conditions per place. [2024-06-27 18:38:27,504 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 467 selfloop transitions, 232 changer transitions 0/707 dead transitions. [2024-06-27 18:38:27,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 707 transitions, 10524 flow [2024-06-27 18:38:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:38:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:38:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 274 transitions. [2024-06-27 18:38:27,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018315018315018 [2024-06-27 18:38:27,505 INFO L175 Difference]: Start difference. First operand has 597 places, 625 transitions, 8133 flow. Second operand 14 states and 274 transitions. [2024-06-27 18:38:27,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 707 transitions, 10524 flow [2024-06-27 18:38:34,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 707 transitions, 10290 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-27 18:38:34,555 INFO L231 Difference]: Finished difference. Result has 602 places, 630 transitions, 8607 flow [2024-06-27 18:38:34,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7899, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8607, PETRI_PLACES=602, PETRI_TRANSITIONS=630} [2024-06-27 18:38:34,555 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 559 predicate places. [2024-06-27 18:38:34,556 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 630 transitions, 8607 flow [2024-06-27 18:38:34,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:34,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:34,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:34,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 18:38:34,556 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:34,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:34,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1707371430, now seen corresponding path program 11 times [2024-06-27 18:38:34,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:34,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021997723] [2024-06-27 18:38:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:34,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:35,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:35,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021997723] [2024-06-27 18:38:35,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021997723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:35,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:35,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:38:35,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880954495] [2024-06-27 18:38:35,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:35,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:38:35,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:35,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:38:35,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:38:35,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:38:35,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 630 transitions, 8607 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:35,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:35,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:38:35,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:37,838 INFO L124 PetriNetUnfolderBase]: 4233/7121 cut-off events. [2024-06-27 18:38:37,838 INFO L125 PetriNetUnfolderBase]: For 615840/615840 co-relation queries the response was YES. [2024-06-27 18:38:37,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48626 conditions, 7121 events. 4233/7121 cut-off events. For 615840/615840 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 49785 event pairs, 718 based on Foata normal form. 2/7063 useless extension candidates. Maximal degree in co-relation 48334. Up to 6008 conditions per place. [2024-06-27 18:38:37,966 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 565 selfloop transitions, 105 changer transitions 0/678 dead transitions. [2024-06-27 18:38:37,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 678 transitions, 10673 flow [2024-06-27 18:38:37,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:38:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:38:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-27 18:38:37,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45726495726495725 [2024-06-27 18:38:37,967 INFO L175 Difference]: Start difference. First operand has 602 places, 630 transitions, 8607 flow. Second operand 12 states and 214 transitions. [2024-06-27 18:38:37,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 678 transitions, 10673 flow [2024-06-27 18:38:46,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 678 transitions, 10317 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-06-27 18:38:46,429 INFO L231 Difference]: Finished difference. Result has 604 places, 632 transitions, 8577 flow [2024-06-27 18:38:46,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8251, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8577, PETRI_PLACES=604, PETRI_TRANSITIONS=632} [2024-06-27 18:38:46,430 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 561 predicate places. [2024-06-27 18:38:46,430 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 632 transitions, 8577 flow [2024-06-27 18:38:46,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:46,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:46,430 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 18:38:46,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 18:38:46,430 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:46,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:46,430 INFO L85 PathProgramCache]: Analyzing trace with hash 25356571, now seen corresponding path program 11 times [2024-06-27 18:38:46,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:46,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368689329] [2024-06-27 18:38:46,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:46,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:47,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:47,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368689329] [2024-06-27 18:38:47,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368689329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:47,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:47,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:38:47,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691774674] [2024-06-27 18:38:47,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:47,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:38:47,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:47,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:38:47,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:38:47,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:38:47,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 632 transitions, 8577 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:47,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:47,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:38:47,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:49,724 INFO L124 PetriNetUnfolderBase]: 4283/7335 cut-off events. [2024-06-27 18:38:49,724 INFO L125 PetriNetUnfolderBase]: For 660020/660020 co-relation queries the response was YES. [2024-06-27 18:38:49,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50528 conditions, 7335 events. 4283/7335 cut-off events. For 660020/660020 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 52172 event pairs, 744 based on Foata normal form. 1/7281 useless extension candidates. Maximal degree in co-relation 50234. Up to 3476 conditions per place. [2024-06-27 18:38:49,858 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 485 selfloop transitions, 220 changer transitions 0/713 dead transitions. [2024-06-27 18:38:49,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 713 transitions, 10960 flow [2024-06-27 18:38:49,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:38:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:38:49,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 263 transitions. [2024-06-27 18:38:49,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187376725838264 [2024-06-27 18:38:49,859 INFO L175 Difference]: Start difference. First operand has 604 places, 632 transitions, 8577 flow. Second operand 13 states and 263 transitions. [2024-06-27 18:38:49,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 713 transitions, 10960 flow [2024-06-27 18:38:58,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 713 transitions, 10763 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 18:38:58,826 INFO L231 Difference]: Finished difference. Result has 610 places, 637 transitions, 9035 flow [2024-06-27 18:38:58,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8380, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9035, PETRI_PLACES=610, PETRI_TRANSITIONS=637} [2024-06-27 18:38:58,827 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 567 predicate places. [2024-06-27 18:38:58,827 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 637 transitions, 9035 flow [2024-06-27 18:38:58,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:58,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:58,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:58,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 18:38:58,827 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:58,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:58,827 INFO L85 PathProgramCache]: Analyzing trace with hash 25563961, now seen corresponding path program 12 times [2024-06-27 18:38:58,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:58,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822345297] [2024-06-27 18:38:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:58,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:59,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:59,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822345297] [2024-06-27 18:38:59,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822345297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:59,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:59,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:38:59,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097494851] [2024-06-27 18:38:59,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:59,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:38:59,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:59,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:38:59,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:38:59,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:38:59,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 637 transitions, 9035 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:59,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:59,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:38:59,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:02,142 INFO L124 PetriNetUnfolderBase]: 4277/7354 cut-off events. [2024-06-27 18:39:02,142 INFO L125 PetriNetUnfolderBase]: For 646190/646190 co-relation queries the response was YES. [2024-06-27 18:39:02,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51039 conditions, 7354 events. 4277/7354 cut-off events. For 646190/646190 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 52506 event pairs, 778 based on Foata normal form. 3/7303 useless extension candidates. Maximal degree in co-relation 50742. Up to 3529 conditions per place. [2024-06-27 18:39:02,280 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 481 selfloop transitions, 214 changer transitions 0/703 dead transitions. [2024-06-27 18:39:02,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 703 transitions, 10786 flow [2024-06-27 18:39:02,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:39:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:39:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 239 transitions. [2024-06-27 18:39:02,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106837606837606 [2024-06-27 18:39:02,281 INFO L175 Difference]: Start difference. First operand has 610 places, 637 transitions, 9035 flow. Second operand 12 states and 239 transitions. [2024-06-27 18:39:02,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 703 transitions, 10786 flow [2024-06-27 18:39:11,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 703 transitions, 10380 flow, removed 78 selfloop flow, removed 9 redundant places. [2024-06-27 18:39:11,943 INFO L231 Difference]: Finished difference. Result has 613 places, 637 transitions, 9064 flow [2024-06-27 18:39:11,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8629, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9064, PETRI_PLACES=613, PETRI_TRANSITIONS=637} [2024-06-27 18:39:11,944 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 570 predicate places. [2024-06-27 18:39:11,944 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 637 transitions, 9064 flow [2024-06-27 18:39:11,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:11,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:11,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:11,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 18:39:11,944 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:11,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:11,945 INFO L85 PathProgramCache]: Analyzing trace with hash 226653211, now seen corresponding path program 13 times [2024-06-27 18:39:11,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:11,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470510731] [2024-06-27 18:39:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:11,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:13,027 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 18:39:13,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:13,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470510731] [2024-06-27 18:39:13,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470510731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:13,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:13,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:39:13,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783415659] [2024-06-27 18:39:13,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:13,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:39:13,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:13,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:39:13,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:39:13,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:39:13,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 637 transitions, 9064 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:13,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:13,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:39:13,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:15,962 INFO L124 PetriNetUnfolderBase]: 4310/7381 cut-off events. [2024-06-27 18:39:15,963 INFO L125 PetriNetUnfolderBase]: For 649926/649926 co-relation queries the response was YES. [2024-06-27 18:39:16,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52328 conditions, 7381 events. 4310/7381 cut-off events. For 649926/649926 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 52629 event pairs, 724 based on Foata normal form. 3/7324 useless extension candidates. Maximal degree in co-relation 52029. Up to 3580 conditions per place. [2024-06-27 18:39:16,083 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 472 selfloop transitions, 224 changer transitions 0/704 dead transitions. [2024-06-27 18:39:16,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 704 transitions, 10924 flow [2024-06-27 18:39:16,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:39:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:39:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 233 transitions. [2024-06-27 18:39:16,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49786324786324787 [2024-06-27 18:39:16,084 INFO L175 Difference]: Start difference. First operand has 613 places, 637 transitions, 9064 flow. Second operand 12 states and 233 transitions. [2024-06-27 18:39:16,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 704 transitions, 10924 flow [2024-06-27 18:39:24,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 704 transitions, 10491 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 18:39:24,903 INFO L231 Difference]: Finished difference. Result has 614 places, 640 transitions, 9207 flow [2024-06-27 18:39:24,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8631, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9207, PETRI_PLACES=614, PETRI_TRANSITIONS=640} [2024-06-27 18:39:24,903 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 571 predicate places. [2024-06-27 18:39:24,903 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 640 transitions, 9207 flow [2024-06-27 18:39:24,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:24,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:24,904 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 18:39:24,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 18:39:24,904 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:24,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:24,904 INFO L85 PathProgramCache]: Analyzing trace with hash 226930258, now seen corresponding path program 1 times [2024-06-27 18:39:24,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:24,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117133652] [2024-06-27 18:39:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:24,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:25,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:25,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117133652] [2024-06-27 18:39:25,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117133652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:25,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:25,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:39:25,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727721497] [2024-06-27 18:39:25,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:25,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:39:25,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:25,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:39:25,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:39:25,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:39:25,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 640 transitions, 9207 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:39:25,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:25,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:39:25,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:28,268 INFO L124 PetriNetUnfolderBase]: 4326/7460 cut-off events. [2024-06-27 18:39:28,268 INFO L125 PetriNetUnfolderBase]: For 638245/638245 co-relation queries the response was YES. [2024-06-27 18:39:28,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52649 conditions, 7460 events. 4326/7460 cut-off events. For 638245/638245 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 53658 event pairs, 720 based on Foata normal form. 2/7408 useless extension candidates. Maximal degree in co-relation 52349. Up to 6178 conditions per place. [2024-06-27 18:39:28,405 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 608 selfloop transitions, 78 changer transitions 0/694 dead transitions. [2024-06-27 18:39:28,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 694 transitions, 10874 flow [2024-06-27 18:39:28,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:39:28,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-27 18:39:28,406 INFO L175 Difference]: Start difference. First operand has 614 places, 640 transitions, 9207 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:39:28,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 694 transitions, 10874 flow [2024-06-27 18:39:37,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 694 transitions, 10333 flow, removed 49 selfloop flow, removed 10 redundant places. [2024-06-27 18:39:37,276 INFO L231 Difference]: Finished difference. Result has 616 places, 642 transitions, 8854 flow [2024-06-27 18:39:37,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8666, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8854, PETRI_PLACES=616, PETRI_TRANSITIONS=642} [2024-06-27 18:39:37,277 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 573 predicate places. [2024-06-27 18:39:37,277 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 642 transitions, 8854 flow [2024-06-27 18:39:37,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:39:37,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:37,277 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 18:39:37,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 18:39:37,278 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:37,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:37,278 INFO L85 PathProgramCache]: Analyzing trace with hash 219503371, now seen corresponding path program 14 times [2024-06-27 18:39:37,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:37,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51649032] [2024-06-27 18:39:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:37,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:38,288 INFO 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 18:39:38,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:38,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51649032] [2024-06-27 18:39:38,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51649032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:38,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:38,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:39:38,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256694747] [2024-06-27 18:39:38,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:38,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:39:38,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:38,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:39:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:39:38,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:39:38,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 642 transitions, 8854 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:38,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:38,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:39:38,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:40,693 INFO L124 PetriNetUnfolderBase]: 4359/7460 cut-off events. [2024-06-27 18:39:40,693 INFO L125 PetriNetUnfolderBase]: For 662278/662278 co-relation queries the response was YES. [2024-06-27 18:39:40,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51980 conditions, 7460 events. 4359/7460 cut-off events. For 662278/662278 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 53185 event pairs, 755 based on Foata normal form. 3/7406 useless extension candidates. Maximal degree in co-relation 51678. Up to 3659 conditions per place. [2024-06-27 18:39:40,832 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 486 selfloop transitions, 217 changer transitions 0/711 dead transitions. [2024-06-27 18:39:40,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 711 transitions, 10744 flow [2024-06-27 18:39:40,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:39:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:39:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2024-06-27 18:39:40,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085470085470085 [2024-06-27 18:39:40,833 INFO L175 Difference]: Start difference. First operand has 616 places, 642 transitions, 8854 flow. Second operand 12 states and 238 transitions. [2024-06-27 18:39:40,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 711 transitions, 10744 flow [2024-06-27 18:39:51,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 711 transitions, 10578 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 18:39:51,254 INFO L231 Difference]: Finished difference. Result has 620 places, 645 transitions, 9256 flow [2024-06-27 18:39:51,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8688, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9256, PETRI_PLACES=620, PETRI_TRANSITIONS=645} [2024-06-27 18:39:51,254 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 577 predicate places. [2024-06-27 18:39:51,254 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 645 transitions, 9256 flow [2024-06-27 18:39:51,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:51,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:51,254 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 18:39:51,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 18:39:51,254 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:51,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:51,255 INFO L85 PathProgramCache]: Analyzing trace with hash 219295826, now seen corresponding path program 12 times [2024-06-27 18:39:51,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:51,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587768790] [2024-06-27 18:39:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:51,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:52,359 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 18:39:52,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:52,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587768790] [2024-06-27 18:39:52,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587768790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:52,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:52,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:39:52,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791815033] [2024-06-27 18:39:52,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:52,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:39:52,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:52,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:39:52,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:39:52,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:39:52,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 645 transitions, 9256 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:52,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:52,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:39:52,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:55,167 INFO L124 PetriNetUnfolderBase]: 4356/7319 cut-off events. [2024-06-27 18:39:55,168 INFO L125 PetriNetUnfolderBase]: For 615283/615283 co-relation queries the response was YES. [2024-06-27 18:39:55,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52356 conditions, 7319 events. 4356/7319 cut-off events. For 615283/615283 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 51350 event pairs, 753 based on Foata normal form. 2/7261 useless extension candidates. Maximal degree in co-relation 52053. Up to 6322 conditions per place. [2024-06-27 18:39:55,287 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 583 selfloop transitions, 98 changer transitions 0/689 dead transitions. [2024-06-27 18:39:55,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 689 transitions, 10862 flow [2024-06-27 18:39:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:39:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:39:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-27 18:39:55,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-27 18:39:55,288 INFO L175 Difference]: Start difference. First operand has 620 places, 645 transitions, 9256 flow. Second operand 12 states and 210 transitions. [2024-06-27 18:39:55,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 689 transitions, 10862 flow [2024-06-27 18:40:04,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 689 transitions, 10299 flow, removed 67 selfloop flow, removed 10 redundant places. [2024-06-27 18:40:04,576 INFO L231 Difference]: Finished difference. Result has 622 places, 645 transitions, 8893 flow [2024-06-27 18:40:04,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8693, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8893, PETRI_PLACES=622, PETRI_TRANSITIONS=645} [2024-06-27 18:40:04,577 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 579 predicate places. [2024-06-27 18:40:04,577 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 645 transitions, 8893 flow [2024-06-27 18:40:04,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:04,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:04,577 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 18:40:04,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 18:40:04,578 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:04,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:04,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1991391145, now seen corresponding path program 15 times [2024-06-27 18:40:04,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:04,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017219983] [2024-06-27 18:40:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:04,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:05,453 INFO 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 18:40:05,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:05,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017219983] [2024-06-27 18:40:05,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017219983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:05,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:05,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:40:05,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064960617] [2024-06-27 18:40:05,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:05,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:40:05,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:40:05,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:40:05,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:40:05,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 645 transitions, 8893 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:05,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:05,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:40:05,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:08,532 INFO L124 PetriNetUnfolderBase]: 4363/7468 cut-off events. [2024-06-27 18:40:08,533 INFO L125 PetriNetUnfolderBase]: For 595419/595419 co-relation queries the response was YES. [2024-06-27 18:40:08,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50632 conditions, 7468 events. 4363/7468 cut-off events. For 595419/595419 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 53285 event pairs, 725 based on Foata normal form. 3/7413 useless extension candidates. Maximal degree in co-relation 50328. Up to 3665 conditions per place. [2024-06-27 18:40:08,652 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 487 selfloop transitions, 218 changer transitions 0/713 dead transitions. [2024-06-27 18:40:08,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 713 transitions, 10760 flow [2024-06-27 18:40:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:40:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:40:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 237 transitions. [2024-06-27 18:40:08,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2024-06-27 18:40:08,653 INFO L175 Difference]: Start difference. First operand has 622 places, 645 transitions, 8893 flow. Second operand 12 states and 237 transitions. [2024-06-27 18:40:08,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 713 transitions, 10760 flow [2024-06-27 18:40:17,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 713 transitions, 10547 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 18:40:17,194 INFO L231 Difference]: Finished difference. Result has 623 places, 647 transitions, 9221 flow [2024-06-27 18:40:17,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8680, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9221, PETRI_PLACES=623, PETRI_TRANSITIONS=647} [2024-06-27 18:40:17,195 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 580 predicate places. [2024-06-27 18:40:17,195 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 647 transitions, 9221 flow [2024-06-27 18:40:17,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:17,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:17,195 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 18:40:17,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 18:40:17,195 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:17,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:17,196 INFO L85 PathProgramCache]: Analyzing trace with hash 219295981, now seen corresponding path program 16 times [2024-06-27 18:40:17,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:17,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332885374] [2024-06-27 18:40:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:17,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:18,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:18,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332885374] [2024-06-27 18:40:18,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332885374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:18,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:18,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:40:18,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659344965] [2024-06-27 18:40:18,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:18,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:40:18,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:18,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:40:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:40:18,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:40:18,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 647 transitions, 9221 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:18,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:18,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:40:18,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:21,046 INFO L124 PetriNetUnfolderBase]: 4361/7439 cut-off events. [2024-06-27 18:40:21,046 INFO L125 PetriNetUnfolderBase]: For 547553/547553 co-relation queries the response was YES. [2024-06-27 18:40:21,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51391 conditions, 7439 events. 4361/7439 cut-off events. For 547553/547553 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 52844 event pairs, 739 based on Foata normal form. 1/7383 useless extension candidates. Maximal degree in co-relation 51086. Up to 3565 conditions per place. [2024-06-27 18:40:21,159 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 483 selfloop transitions, 228 changer transitions 0/719 dead transitions. [2024-06-27 18:40:21,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 719 transitions, 11040 flow [2024-06-27 18:40:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:40:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:40:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 256 transitions. [2024-06-27 18:40:21,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.504930966469428 [2024-06-27 18:40:21,160 INFO L175 Difference]: Start difference. First operand has 623 places, 647 transitions, 9221 flow. Second operand 13 states and 256 transitions. [2024-06-27 18:40:21,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 719 transitions, 11040 flow [2024-06-27 18:40:28,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 719 transitions, 10431 flow, removed 85 selfloop flow, removed 11 redundant places. [2024-06-27 18:40:28,972 INFO L231 Difference]: Finished difference. Result has 625 places, 647 transitions, 9078 flow [2024-06-27 18:40:28,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8612, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9078, PETRI_PLACES=625, PETRI_TRANSITIONS=647} [2024-06-27 18:40:28,972 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 582 predicate places. [2024-06-27 18:40:28,972 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 647 transitions, 9078 flow [2024-06-27 18:40:28,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:28,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:28,973 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 18:40:28,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 18:40:28,973 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:28,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:28,973 INFO L85 PathProgramCache]: Analyzing trace with hash 365991993, now seen corresponding path program 17 times [2024-06-27 18:40:28,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:28,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737027707] [2024-06-27 18:40:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:28,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:29,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:29,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737027707] [2024-06-27 18:40:29,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737027707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:29,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:29,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:40:29,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857273759] [2024-06-27 18:40:29,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:40:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:40:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:40:30,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:40:30,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 647 transitions, 9078 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:30,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:30,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:40:30,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:32,847 INFO L124 PetriNetUnfolderBase]: 4394/7478 cut-off events. [2024-06-27 18:40:32,848 INFO L125 PetriNetUnfolderBase]: For 587325/587325 co-relation queries the response was YES. [2024-06-27 18:40:32,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51493 conditions, 7478 events. 4394/7478 cut-off events. For 587325/587325 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 52994 event pairs, 694 based on Foata normal form. 3/7423 useless extension candidates. Maximal degree in co-relation 51188. Up to 3713 conditions per place. [2024-06-27 18:40:32,970 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 495 selfloop transitions, 213 changer transitions 0/716 dead transitions. [2024-06-27 18:40:32,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 716 transitions, 10993 flow [2024-06-27 18:40:32,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:40:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:40:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 236 transitions. [2024-06-27 18:40:32,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2024-06-27 18:40:32,971 INFO L175 Difference]: Start difference. First operand has 625 places, 647 transitions, 9078 flow. Second operand 12 states and 236 transitions. [2024-06-27 18:40:32,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 716 transitions, 10993 flow [2024-06-27 18:40:40,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 716 transitions, 10311 flow, removed 12 selfloop flow, removed 13 redundant places. [2024-06-27 18:40:40,730 INFO L231 Difference]: Finished difference. Result has 624 places, 650 transitions, 8959 flow [2024-06-27 18:40:40,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8396, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8959, PETRI_PLACES=624, PETRI_TRANSITIONS=650} [2024-06-27 18:40:40,730 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 581 predicate places. [2024-06-27 18:40:40,730 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 650 transitions, 8959 flow [2024-06-27 18:40:40,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:40,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:40,730 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 18:40:40,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 18:40:40,731 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:40,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:40,731 INFO L85 PathProgramCache]: Analyzing trace with hash 622492503, now seen corresponding path program 18 times [2024-06-27 18:40:40,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:40,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547364614] [2024-06-27 18:40:40,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:40,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:41,857 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 18:40:41,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:41,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547364614] [2024-06-27 18:40:41,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547364614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:41,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:41,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:40:41,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577226438] [2024-06-27 18:40:41,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:41,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:40:41,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:41,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:40:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:40:41,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:40:41,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 650 transitions, 8959 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:41,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:41,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:40:41,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:44,935 INFO L124 PetriNetUnfolderBase]: 4427/7539 cut-off events. [2024-06-27 18:40:44,935 INFO L125 PetriNetUnfolderBase]: For 597950/597950 co-relation queries the response was YES. [2024-06-27 18:40:45,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51035 conditions, 7539 events. 4427/7539 cut-off events. For 597950/597950 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 53486 event pairs, 715 based on Foata normal form. 3/7482 useless extension candidates. Maximal degree in co-relation 50730. Up to 3764 conditions per place. [2024-06-27 18:40:45,056 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 481 selfloop transitions, 227 changer transitions 0/716 dead transitions. [2024-06-27 18:40:45,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 716 transitions, 10865 flow [2024-06-27 18:40:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:40:45,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:40:45,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-06-27 18:40:45,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-06-27 18:40:45,057 INFO L175 Difference]: Start difference. First operand has 624 places, 650 transitions, 8959 flow. Second operand 12 states and 231 transitions. [2024-06-27 18:40:45,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 716 transitions, 10865 flow [2024-06-27 18:40:54,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 716 transitions, 10328 flow, removed 58 selfloop flow, removed 10 redundant places. [2024-06-27 18:40:54,479 INFO L231 Difference]: Finished difference. Result has 626 places, 653 transitions, 9019 flow [2024-06-27 18:40:54,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8422, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9019, PETRI_PLACES=626, PETRI_TRANSITIONS=653} [2024-06-27 18:40:54,479 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 583 predicate places. [2024-06-27 18:40:54,479 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 653 transitions, 9019 flow [2024-06-27 18:40:54,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:54,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:54,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:54,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 18:40:54,480 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:54,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:54,480 INFO L85 PathProgramCache]: Analyzing trace with hash 622769550, now seen corresponding path program 2 times [2024-06-27 18:40:54,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:54,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066816280] [2024-06-27 18:40:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:54,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:55,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:55,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066816280] [2024-06-27 18:40:55,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066816280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:55,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:55,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:40:55,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900707469] [2024-06-27 18:40:55,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:55,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:40:55,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:55,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:40:55,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:40:55,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:40:55,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 653 transitions, 9019 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:40:55,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:55,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:40:55,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:58,382 INFO L124 PetriNetUnfolderBase]: 4465/7620 cut-off events. [2024-06-27 18:40:58,382 INFO L125 PetriNetUnfolderBase]: For 576506/576506 co-relation queries the response was YES. [2024-06-27 18:40:58,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50913 conditions, 7620 events. 4465/7620 cut-off events. For 576506/576506 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 54399 event pairs, 818 based on Foata normal form. 2/7553 useless extension candidates. Maximal degree in co-relation 50607. Up to 6380 conditions per place. [2024-06-27 18:40:58,513 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 627 selfloop transitions, 74 changer transitions 0/709 dead transitions. [2024-06-27 18:40:58,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 709 transitions, 10750 flow [2024-06-27 18:40:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:40:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:40:58,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:40:58,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-27 18:40:58,515 INFO L175 Difference]: Start difference. First operand has 626 places, 653 transitions, 9019 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:40:58,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 709 transitions, 10750 flow [2024-06-27 18:41:06,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 709 transitions, 10175 flow, removed 61 selfloop flow, removed 10 redundant places. [2024-06-27 18:41:06,436 INFO L231 Difference]: Finished difference. Result has 628 places, 657 transitions, 8652 flow [2024-06-27 18:41:06,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8448, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8652, PETRI_PLACES=628, PETRI_TRANSITIONS=657} [2024-06-27 18:41:06,436 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 585 predicate places. [2024-06-27 18:41:06,436 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 657 transitions, 8652 flow [2024-06-27 18:41:06,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:41:06,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:06,437 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 18:41:06,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 18:41:06,437 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:06,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:06,437 INFO L85 PathProgramCache]: Analyzing trace with hash 365790183, now seen corresponding path program 19 times [2024-06-27 18:41:06,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:06,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317498989] [2024-06-27 18:41:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:06,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:07,343 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 18:41:07,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:07,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317498989] [2024-06-27 18:41:07,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317498989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:07,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:07,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:41:07,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867440832] [2024-06-27 18:41:07,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:07,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:41:07,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:07,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:41:07,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:41:07,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-27 18:41:07,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 657 transitions, 8652 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:07,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:07,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-27 18:41:07,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:10,280 INFO L124 PetriNetUnfolderBase]: 4498/7667 cut-off events. [2024-06-27 18:41:10,280 INFO L125 PetriNetUnfolderBase]: For 599360/599360 co-relation queries the response was YES. [2024-06-27 18:41:10,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50186 conditions, 7667 events. 4498/7667 cut-off events. For 599360/599360 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 54677 event pairs, 685 based on Foata normal form. 3/7612 useless extension candidates. Maximal degree in co-relation 49878. Up to 3849 conditions per place. [2024-06-27 18:41:10,401 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 501 selfloop transitions, 217 changer transitions 0/726 dead transitions. [2024-06-27 18:41:10,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 726 transitions, 10605 flow [2024-06-27 18:41:10,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:41:10,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:41:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-06-27 18:41:10,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021367521367521 [2024-06-27 18:41:10,402 INFO L175 Difference]: Start difference. First operand has 628 places, 657 transitions, 8652 flow. Second operand 12 states and 235 transitions. [2024-06-27 18:41:10,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 726 transitions, 10605 flow Killed by 15