./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe004_tso.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/safe004_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe004_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:22:30,900 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:22:30,965 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:22:30,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:22:30,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:22:30,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:22:30,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:22:30,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:22:30,995 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:22:30,998 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:22:30,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:22:30,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:22:30,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:22:31,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:22:31,000 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:22:31,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:22:31,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:22:31,001 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:22:31,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:22:31,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:22:31,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:22:31,002 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:22:31,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:22:31,003 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:22:31,003 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:22:31,003 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:22:31,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:22:31,004 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:22:31,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:22:31,004 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:22:31,005 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:22:31,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:22:31,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:22:31,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:22:31,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:22:31,006 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:22:31,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:22:31,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:22:31,007 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:22:31,007 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:22:31,007 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:22:31,007 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:22:31,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:22:31,008 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:22:31,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:22:31,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:22:31,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:22:31,293 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:22:31,294 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:22:31,295 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe004_tso.yml/witness.yml [2024-06-28 02:22:31,376 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:22:31,377 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:22:31,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2024-06-28 02:22:32,403 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:22:32,629 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:22:32,629 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2024-06-28 02:22:32,646 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c498a4a/5a1e3f41c6a64336aece85bf80fdb858/FLAGf19fb4f10 [2024-06-28 02:22:32,656 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c498a4a/5a1e3f41c6a64336aece85bf80fdb858 [2024-06-28 02:22:32,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:22:32,657 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:22:32,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:22:32,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:22:32,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:22:32,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:31" (1/2) ... [2024-06-28 02:22:32,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a90126f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:32, skipping insertion in model container [2024-06-28 02:22:32,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:31" (1/2) ... [2024-06-28 02:22:32,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4e30b276 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:32, skipping insertion in model container [2024-06-28 02:22:32,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:22:32" (2/2) ... [2024-06-28 02:22:32,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a90126f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:32, skipping insertion in model container [2024-06-28 02:22:32,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:22:32" (2/2) ... [2024-06-28 02:22:32,665 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:22:32,697 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:22:32,698 INFO L97 edCorrectnessWitness]: Location invariant before [L781-L781] (((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((((0 <= __unbuffered_cnt && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-28 02:22:32,698 INFO L97 edCorrectnessWitness]: Location invariant before [L782-L782] (((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((((0 <= __unbuffered_cnt && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-28 02:22:32,698 INFO L97 edCorrectnessWitness]: Location invariant before [L779-L779] (((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((((0 <= __unbuffered_cnt && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-28 02:22:32,698 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:22:32,698 INFO L106 edCorrectnessWitness]: ghost_update [L777-L777] multithreaded = 1; [2024-06-28 02:22:32,724 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:22:32,957 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:22:32,971 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:22:33,065 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:22:33,091 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:22:33,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33 WrapperNode [2024-06-28 02:22:33,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:22:33,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:22:33,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:22:33,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:22:33,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (1/1) ... [2024-06-28 02:22:33,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (1/1) ... [2024-06-28 02:22:33,125 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2024-06-28 02:22:33,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:22:33,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:22:33,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:22:33,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:22:33,135 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (1/1) ... [2024-06-28 02:22:33,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (1/1) ... [2024-06-28 02:22:33,137 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (1/1) ... [2024-06-28 02:22:33,147 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]. [2024-06-28 02:22:33,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (1/1) ... [2024-06-28 02:22:33,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (1/1) ... [2024-06-28 02:22:33,152 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (1/1) ... [2024-06-28 02:22:33,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (1/1) ... [2024-06-28 02:22:33,155 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (1/1) ... [2024-06-28 02:22:33,155 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (1/1) ... [2024-06-28 02:22:33,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:22:33,158 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:22:33,158 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:22:33,158 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:22:33,158 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (1/1) ... [2024-06-28 02:22:33,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:22:33,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:22:33,191 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) [2024-06-28 02:22:33,232 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 [2024-06-28 02:22:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:22:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:22:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:22:33,268 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:22:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:22:33,269 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:22:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:22:33,275 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:22:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:22:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:22:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:22:33,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:22:33,276 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:22:33,364 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:22:33,366 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:22:33,516 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:22:33,516 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:22:33,612 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:22:33,619 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:22:33,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:22:33 BoogieIcfgContainer [2024-06-28 02:22:33,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:22:33,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:22:33,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:22:33,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:22:33,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:31" (1/4) ... [2024-06-28 02:22:33,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d0ec0f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:22:33, skipping insertion in model container [2024-06-28 02:22:33,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:22:32" (2/4) ... [2024-06-28 02:22:33,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d0ec0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:22:33, skipping insertion in model container [2024-06-28 02:22:33,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:33" (3/4) ... [2024-06-28 02:22:33,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d0ec0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:22:33, skipping insertion in model container [2024-06-28 02:22:33,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:22:33" (4/4) ... [2024-06-28 02:22:33,626 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2024-06-28 02:22:33,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:22:33,638 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 02:22:33,638 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:22:33,663 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:22:33,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 02:22:33,704 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-28 02:22:33,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:22:33,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:22:33,705 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 02:22:33,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-28 02:22:33,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:22:33,720 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;@7282d967, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:22:33,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 02:22:33,723 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:22:33,724 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:22:33,724 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:22:33,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:33,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:22:33,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:33,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:33,730 INFO L85 PathProgramCache]: Analyzing trace with hash 218856700, now seen corresponding path program 1 times [2024-06-28 02:22:33,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:33,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579158600] [2024-06-28 02:22:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:33,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:34,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:34,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579158600] [2024-06-28 02:22:34,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579158600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:34,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:34,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:22:34,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320924316] [2024-06-28 02:22:34,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:34,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:22:34,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:34,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:22:34,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:22:34,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-06-28 02:22:34,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:34,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:34,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-06-28 02:22:34,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:34,343 INFO L124 PetriNetUnfolderBase]: 606/1001 cut-off events. [2024-06-28 02:22:34,343 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 02:22:34,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 1001 events. 606/1001 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5021 event pairs, 384 based on Foata normal form. 1/957 useless extension candidates. Maximal degree in co-relation 2005. Up to 941 conditions per place. [2024-06-28 02:22:34,354 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 28 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-06-28 02:22:34,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 161 flow [2024-06-28 02:22:34,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:22:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:22:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-06-28 02:22:34,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-06-28 02:22:34,366 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 83 transitions. [2024-06-28 02:22:34,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 161 flow [2024-06-28 02:22:34,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:34,370 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-28 02:22:34,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-28 02:22:34,375 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-28 02:22:34,375 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-28 02:22:34,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:34,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:34,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:34,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:22:34,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:34,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:34,378 INFO L85 PathProgramCache]: Analyzing trace with hash -131900529, now seen corresponding path program 1 times [2024-06-28 02:22:34,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:34,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502579869] [2024-06-28 02:22:34,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:34,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:34,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:34,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502579869] [2024-06-28 02:22:34,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502579869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:34,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:34,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:22:34,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731345908] [2024-06-28 02:22:34,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:34,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:34,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:34,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:34,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:34,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:34,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 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) [2024-06-28 02:22:34,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:34,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:34,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:34,719 INFO L124 PetriNetUnfolderBase]: 934/1509 cut-off events. [2024-06-28 02:22:34,719 INFO L125 PetriNetUnfolderBase]: For 300/348 co-relation queries the response was YES. [2024-06-28 02:22:34,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 1509 events. 934/1509 cut-off events. For 300/348 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7384 event pairs, 530 based on Foata normal form. 3/1482 useless extension candidates. Maximal degree in co-relation 3413. Up to 1399 conditions per place. [2024-06-28 02:22:34,729 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 40 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 02:22:34,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 248 flow [2024-06-28 02:22:34,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:22:34,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:22:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-28 02:22:34,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-06-28 02:22:34,733 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 103 transitions. [2024-06-28 02:22:34,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 248 flow [2024-06-28 02:22:34,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:34,736 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 150 flow [2024-06-28 02:22:34,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-28 02:22:34,737 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-28 02:22:34,737 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 150 flow [2024-06-28 02:22:34,737 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) [2024-06-28 02:22:34,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:34,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:34,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:22:34,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:34,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash 206052061, now seen corresponding path program 1 times [2024-06-28 02:22:34,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:34,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607292688] [2024-06-28 02:22:34,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:34,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:34,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607292688] [2024-06-28 02:22:34,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607292688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:34,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:34,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:34,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847434330] [2024-06-28 02:22:34,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:34,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:34,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:34,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:34,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:34,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:34,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:34,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:34,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:34,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:35,054 INFO L124 PetriNetUnfolderBase]: 972/1587 cut-off events. [2024-06-28 02:22:35,055 INFO L125 PetriNetUnfolderBase]: For 837/837 co-relation queries the response was YES. [2024-06-28 02:22:35,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 1587 events. 972/1587 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7859 event pairs, 304 based on Foata normal form. 7/1585 useless extension candidates. Maximal degree in co-relation 3986. Up to 1312 conditions per place. [2024-06-28 02:22:35,063 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 55 selfloop transitions, 19 changer transitions 0/81 dead transitions. [2024-06-28 02:22:35,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 81 transitions, 424 flow [2024-06-28 02:22:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:35,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:35,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-06-28 02:22:35,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-06-28 02:22:35,068 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 150 flow. Second operand 5 states and 140 transitions. [2024-06-28 02:22:35,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 81 transitions, 424 flow [2024-06-28 02:22:35,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 81 transitions, 422 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:35,071 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 276 flow [2024-06-28 02:22:35,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=52, PETRI_TRANSITIONS=54} [2024-06-28 02:22:35,072 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-06-28 02:22:35,072 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 276 flow [2024-06-28 02:22:35,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:35,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:35,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:35,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:22:35,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:35,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:35,074 INFO L85 PathProgramCache]: Analyzing trace with hash -410706608, now seen corresponding path program 1 times [2024-06-28 02:22:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:35,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777946522] [2024-06-28 02:22:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:35,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:35,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:35,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777946522] [2024-06-28 02:22:35,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777946522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:35,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:35,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:35,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657432325] [2024-06-28 02:22:35,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:35,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:35,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:35,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:35,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:35,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:35,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2024-06-28 02:22:35,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:35,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:35,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:35,434 INFO L124 PetriNetUnfolderBase]: 1054/1741 cut-off events. [2024-06-28 02:22:35,434 INFO L125 PetriNetUnfolderBase]: For 2375/2375 co-relation queries the response was YES. [2024-06-28 02:22:35,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5472 conditions, 1741 events. 1054/1741 cut-off events. For 2375/2375 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8907 event pairs, 197 based on Foata normal form. 26/1758 useless extension candidates. Maximal degree in co-relation 5452. Up to 1290 conditions per place. [2024-06-28 02:22:35,444 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 62 selfloop transitions, 22 changer transitions 0/91 dead transitions. [2024-06-28 02:22:35,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 91 transitions, 576 flow [2024-06-28 02:22:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-28 02:22:35,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-06-28 02:22:35,446 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 276 flow. Second operand 6 states and 164 transitions. [2024-06-28 02:22:35,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 91 transitions, 576 flow [2024-06-28 02:22:35,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 91 transitions, 566 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:35,451 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 337 flow [2024-06-28 02:22:35,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=337, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-06-28 02:22:35,452 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-28 02:22:35,452 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 337 flow [2024-06-28 02:22:35,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2024-06-28 02:22:35,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:35,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:35,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:22:35,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:35,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1224206505, now seen corresponding path program 1 times [2024-06-28 02:22:35,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:35,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316326777] [2024-06-28 02:22:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:35,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:35,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:35,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316326777] [2024-06-28 02:22:35,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316326777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:35,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:35,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:22:35,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416216152] [2024-06-28 02:22:35,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:35,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:35,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:35,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:35,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:35,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-06-28 02:22:35,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:35,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:35,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-06-28 02:22:35,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:35,689 INFO L124 PetriNetUnfolderBase]: 801/1435 cut-off events. [2024-06-28 02:22:35,690 INFO L125 PetriNetUnfolderBase]: For 2705/2739 co-relation queries the response was YES. [2024-06-28 02:22:35,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4817 conditions, 1435 events. 801/1435 cut-off events. For 2705/2739 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7864 event pairs, 231 based on Foata normal form. 4/1396 useless extension candidates. Maximal degree in co-relation 4794. Up to 1191 conditions per place. [2024-06-28 02:22:35,711 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 46 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2024-06-28 02:22:35,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 505 flow [2024-06-28 02:22:35,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:22:35,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:22:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-06-28 02:22:35,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-28 02:22:35,712 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 337 flow. Second operand 4 states and 104 transitions. [2024-06-28 02:22:35,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 505 flow [2024-06-28 02:22:35,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 71 transitions, 454 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:35,720 INFO L231 Difference]: Finished difference. Result has 57 places, 60 transitions, 352 flow [2024-06-28 02:22:35,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=57, PETRI_TRANSITIONS=60} [2024-06-28 02:22:35,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-28 02:22:35,723 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 352 flow [2024-06-28 02:22:35,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:35,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:35,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:35,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:22:35,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:35,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:35,724 INFO L85 PathProgramCache]: Analyzing trace with hash 703353189, now seen corresponding path program 1 times [2024-06-28 02:22:35,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:35,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050137443] [2024-06-28 02:22:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:35,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:35,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:35,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050137443] [2024-06-28 02:22:35,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050137443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:35,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:35,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274053947] [2024-06-28 02:22:35,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:35,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:35,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:35,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:35,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:35,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 352 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:35,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:35,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:35,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:36,011 INFO L124 PetriNetUnfolderBase]: 1050/1746 cut-off events. [2024-06-28 02:22:36,011 INFO L125 PetriNetUnfolderBase]: For 3995/3995 co-relation queries the response was YES. [2024-06-28 02:22:36,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6097 conditions, 1746 events. 1050/1746 cut-off events. For 3995/3995 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9025 event pairs, 307 based on Foata normal form. 6/1746 useless extension candidates. Maximal degree in co-relation 6073. Up to 1463 conditions per place. [2024-06-28 02:22:36,021 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 54 selfloop transitions, 24 changer transitions 0/85 dead transitions. [2024-06-28 02:22:36,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 635 flow [2024-06-28 02:22:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:36,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-28 02:22:36,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.66 [2024-06-28 02:22:36,023 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 352 flow. Second operand 5 states and 132 transitions. [2024-06-28 02:22:36,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 635 flow [2024-06-28 02:22:36,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 85 transitions, 602 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:36,028 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 434 flow [2024-06-28 02:22:36,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2024-06-28 02:22:36,031 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-06-28 02:22:36,031 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 434 flow [2024-06-28 02:22:36,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:36,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:36,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:22:36,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:36,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:36,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1439788116, now seen corresponding path program 1 times [2024-06-28 02:22:36,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:36,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206843939] [2024-06-28 02:22:36,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:36,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:36,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:36,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206843939] [2024-06-28 02:22:36,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206843939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:36,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:36,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:36,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031440355] [2024-06-28 02:22:36,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:36,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:36,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:36,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:36,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:36,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:36,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 434 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:36,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:36,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:36,326 INFO L124 PetriNetUnfolderBase]: 1053/1743 cut-off events. [2024-06-28 02:22:36,327 INFO L125 PetriNetUnfolderBase]: For 4867/4867 co-relation queries the response was YES. [2024-06-28 02:22:36,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6522 conditions, 1743 events. 1053/1743 cut-off events. For 4867/4867 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8960 event pairs, 333 based on Foata normal form. 4/1739 useless extension candidates. Maximal degree in co-relation 6496. Up to 1457 conditions per place. [2024-06-28 02:22:36,338 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 58 selfloop transitions, 26 changer transitions 0/91 dead transitions. [2024-06-28 02:22:36,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 735 flow [2024-06-28 02:22:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-06-28 02:22:36,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.67 [2024-06-28 02:22:36,339 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 434 flow. Second operand 5 states and 134 transitions. [2024-06-28 02:22:36,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 735 flow [2024-06-28 02:22:36,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 702 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:36,345 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 496 flow [2024-06-28 02:22:36,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=65, PETRI_TRANSITIONS=69} [2024-06-28 02:22:36,346 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-06-28 02:22:36,346 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 496 flow [2024-06-28 02:22:36,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:36,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:36,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:22:36,347 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:36,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:36,348 INFO L85 PathProgramCache]: Analyzing trace with hash 255447820, now seen corresponding path program 2 times [2024-06-28 02:22:36,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:36,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760481414] [2024-06-28 02:22:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:36,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:36,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760481414] [2024-06-28 02:22:36,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760481414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:36,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:36,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:36,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293290783] [2024-06-28 02:22:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:36,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:36,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:36,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:36,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 496 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:36,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:36,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:36,586 INFO L124 PetriNetUnfolderBase]: 1018/1668 cut-off events. [2024-06-28 02:22:36,586 INFO L125 PetriNetUnfolderBase]: For 5967/5967 co-relation queries the response was YES. [2024-06-28 02:22:36,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6404 conditions, 1668 events. 1018/1668 cut-off events. For 5967/5967 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8366 event pairs, 335 based on Foata normal form. 4/1665 useless extension candidates. Maximal degree in co-relation 6376. Up to 1406 conditions per place. [2024-06-28 02:22:36,601 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 53 selfloop transitions, 26 changer transitions 0/86 dead transitions. [2024-06-28 02:22:36,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 86 transitions, 724 flow [2024-06-28 02:22:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-28 02:22:36,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-06-28 02:22:36,603 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 496 flow. Second operand 5 states and 129 transitions. [2024-06-28 02:22:36,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 86 transitions, 724 flow [2024-06-28 02:22:36,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 688 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:36,610 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 522 flow [2024-06-28 02:22:36,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-06-28 02:22:36,611 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-28 02:22:36,611 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 522 flow [2024-06-28 02:22:36,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:36,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:36,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:22:36,612 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:36,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:36,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1612568420, now seen corresponding path program 1 times [2024-06-28 02:22:36,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:36,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108803230] [2024-06-28 02:22:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:36,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:36,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:36,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:36,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108803230] [2024-06-28 02:22:36,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108803230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:36,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:36,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:36,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209624027] [2024-06-28 02:22:36,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:36,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:36,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:36,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:36,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:36,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:36,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:36,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:36,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:36,919 INFO L124 PetriNetUnfolderBase]: 1085/1783 cut-off events. [2024-06-28 02:22:36,920 INFO L125 PetriNetUnfolderBase]: For 7650/7650 co-relation queries the response was YES. [2024-06-28 02:22:36,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6860 conditions, 1783 events. 1085/1783 cut-off events. For 7650/7650 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9130 event pairs, 299 based on Foata normal form. 24/1800 useless extension candidates. Maximal degree in co-relation 6831. Up to 1391 conditions per place. [2024-06-28 02:22:36,930 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 60 selfloop transitions, 30 changer transitions 0/97 dead transitions. [2024-06-28 02:22:36,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 820 flow [2024-06-28 02:22:36,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 02:22:36,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-28 02:22:36,932 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 522 flow. Second operand 6 states and 155 transitions. [2024-06-28 02:22:36,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 820 flow [2024-06-28 02:22:36,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 758 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:36,939 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 557 flow [2024-06-28 02:22:36,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=557, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-06-28 02:22:36,940 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-28 02:22:36,940 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 557 flow [2024-06-28 02:22:36,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:36,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:36,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:22:36,940 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:36,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:36,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1574007728, now seen corresponding path program 1 times [2024-06-28 02:22:36,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:36,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701494491] [2024-06-28 02:22:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:36,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:37,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:37,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701494491] [2024-06-28 02:22:37,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701494491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:37,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:37,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:37,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472317638] [2024-06-28 02:22:37,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:37,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:37,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:37,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:37,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:37,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:37,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 557 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:37,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:37,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:37,193 INFO L124 PetriNetUnfolderBase]: 1096/1818 cut-off events. [2024-06-28 02:22:37,193 INFO L125 PetriNetUnfolderBase]: For 8490/8493 co-relation queries the response was YES. [2024-06-28 02:22:37,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7304 conditions, 1818 events. 1096/1818 cut-off events. For 8490/8493 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9533 event pairs, 358 based on Foata normal form. 4/1813 useless extension candidates. Maximal degree in co-relation 7274. Up to 1531 conditions per place. [2024-06-28 02:22:37,204 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 59 selfloop transitions, 26 changer transitions 0/92 dead transitions. [2024-06-28 02:22:37,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 92 transitions, 831 flow [2024-06-28 02:22:37,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:37,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-28 02:22:37,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-06-28 02:22:37,206 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 557 flow. Second operand 5 states and 127 transitions. [2024-06-28 02:22:37,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 92 transitions, 831 flow [2024-06-28 02:22:37,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 92 transitions, 756 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:37,215 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 568 flow [2024-06-28 02:22:37,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2024-06-28 02:22:37,216 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-28 02:22:37,216 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 568 flow [2024-06-28 02:22:37,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:37,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:37,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:22:37,216 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:37,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:37,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1572995888, now seen corresponding path program 2 times [2024-06-28 02:22:37,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:37,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935568099] [2024-06-28 02:22:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:37,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:37,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:37,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935568099] [2024-06-28 02:22:37,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935568099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:37,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:37,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:37,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031546882] [2024-06-28 02:22:37,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:37,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:37,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:37,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:37,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 568 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:37,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:37,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:37,466 INFO L124 PetriNetUnfolderBase]: 1091/1802 cut-off events. [2024-06-28 02:22:37,466 INFO L125 PetriNetUnfolderBase]: For 9379/9386 co-relation queries the response was YES. [2024-06-28 02:22:37,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7247 conditions, 1802 events. 1091/1802 cut-off events. For 9379/9386 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9350 event pairs, 350 based on Foata normal form. 8/1802 useless extension candidates. Maximal degree in co-relation 7216. Up to 1526 conditions per place. [2024-06-28 02:22:37,476 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 60 selfloop transitions, 26 changer transitions 0/93 dead transitions. [2024-06-28 02:22:37,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 786 flow [2024-06-28 02:22:37,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:37,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-28 02:22:37,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-06-28 02:22:37,477 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 568 flow. Second operand 5 states and 128 transitions. [2024-06-28 02:22:37,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 786 flow [2024-06-28 02:22:37,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 93 transitions, 740 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:37,486 INFO L231 Difference]: Finished difference. Result has 73 places, 75 transitions, 582 flow [2024-06-28 02:22:37,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=582, PETRI_PLACES=73, PETRI_TRANSITIONS=75} [2024-06-28 02:22:37,486 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2024-06-28 02:22:37,487 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 75 transitions, 582 flow [2024-06-28 02:22:37,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:37,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:22:37,487 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:37,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1228387191, now seen corresponding path program 1 times [2024-06-28 02:22:37,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:37,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107124169] [2024-06-28 02:22:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:37,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:37,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:37,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107124169] [2024-06-28 02:22:37,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107124169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:37,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:37,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:37,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202910989] [2024-06-28 02:22:37,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:37,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:37,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:37,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:37,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:37,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:37,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 582 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:37,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:37,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:37,797 INFO L124 PetriNetUnfolderBase]: 1194/1960 cut-off events. [2024-06-28 02:22:37,797 INFO L125 PetriNetUnfolderBase]: For 11861/11861 co-relation queries the response was YES. [2024-06-28 02:22:37,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8103 conditions, 1960 events. 1194/1960 cut-off events. For 11861/11861 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10256 event pairs, 259 based on Foata normal form. 4/1954 useless extension candidates. Maximal degree in co-relation 8072. Up to 1385 conditions per place. [2024-06-28 02:22:37,809 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 69 selfloop transitions, 33 changer transitions 0/109 dead transitions. [2024-06-28 02:22:37,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 109 transitions, 950 flow [2024-06-28 02:22:37,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 02:22:37,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6541666666666667 [2024-06-28 02:22:37,810 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 582 flow. Second operand 6 states and 157 transitions. [2024-06-28 02:22:37,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 109 transitions, 950 flow [2024-06-28 02:22:37,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 109 transitions, 872 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:37,828 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 617 flow [2024-06-28 02:22:37,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=617, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-06-28 02:22:37,829 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2024-06-28 02:22:37,829 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 617 flow [2024-06-28 02:22:37,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:37,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:37,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:22:37,830 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:37,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1937222135, now seen corresponding path program 2 times [2024-06-28 02:22:37,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:37,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655006982] [2024-06-28 02:22:37,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:37,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:37,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:37,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655006982] [2024-06-28 02:22:37,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655006982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:37,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:37,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:37,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189294327] [2024-06-28 02:22:37,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:37,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:37,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:37,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:37,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:37,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:37,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:37,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:37,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:38,186 INFO L124 PetriNetUnfolderBase]: 1186/1953 cut-off events. [2024-06-28 02:22:38,186 INFO L125 PetriNetUnfolderBase]: For 13181/13181 co-relation queries the response was YES. [2024-06-28 02:22:38,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8304 conditions, 1953 events. 1186/1953 cut-off events. For 13181/13181 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10294 event pairs, 343 based on Foata normal form. 4/1947 useless extension candidates. Maximal degree in co-relation 8273. Up to 1665 conditions per place. [2024-06-28 02:22:38,198 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 65 selfloop transitions, 31 changer transitions 0/103 dead transitions. [2024-06-28 02:22:38,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 877 flow [2024-06-28 02:22:38,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:38,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:38,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 02:22:38,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6291666666666667 [2024-06-28 02:22:38,200 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 617 flow. Second operand 6 states and 151 transitions. [2024-06-28 02:22:38,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 877 flow [2024-06-28 02:22:38,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 831 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:38,217 INFO L231 Difference]: Finished difference. Result has 78 places, 80 transitions, 652 flow [2024-06-28 02:22:38,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=652, PETRI_PLACES=78, PETRI_TRANSITIONS=80} [2024-06-28 02:22:38,218 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-28 02:22:38,218 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 80 transitions, 652 flow [2024-06-28 02:22:38,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:38,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:38,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:38,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:22:38,219 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:38,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:38,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1246913772, now seen corresponding path program 1 times [2024-06-28 02:22:38,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:38,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450477836] [2024-06-28 02:22:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:38,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:38,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:38,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450477836] [2024-06-28 02:22:38,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450477836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:38,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:38,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:38,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962077094] [2024-06-28 02:22:38,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:38,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:38,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:38,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:38,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:38,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:38,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 80 transitions, 652 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:38,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:38,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:38,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:38,495 INFO L124 PetriNetUnfolderBase]: 1191/1979 cut-off events. [2024-06-28 02:22:38,495 INFO L125 PetriNetUnfolderBase]: For 14374/14374 co-relation queries the response was YES. [2024-06-28 02:22:38,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8605 conditions, 1979 events. 1191/1979 cut-off events. For 14374/14374 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10511 event pairs, 324 based on Foata normal form. 1/1979 useless extension candidates. Maximal degree in co-relation 8572. Up to 1813 conditions per place. [2024-06-28 02:22:38,506 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 83 selfloop transitions, 15 changer transitions 0/105 dead transitions. [2024-06-28 02:22:38,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 105 transitions, 974 flow [2024-06-28 02:22:38,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:38,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 02:22:38,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.605 [2024-06-28 02:22:38,507 INFO L175 Difference]: Start difference. First operand has 78 places, 80 transitions, 652 flow. Second operand 5 states and 121 transitions. [2024-06-28 02:22:38,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 105 transitions, 974 flow [2024-06-28 02:22:38,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 105 transitions, 901 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:38,523 INFO L231 Difference]: Finished difference. Result has 80 places, 89 transitions, 691 flow [2024-06-28 02:22:38,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=691, PETRI_PLACES=80, PETRI_TRANSITIONS=89} [2024-06-28 02:22:38,524 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-28 02:22:38,524 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 89 transitions, 691 flow [2024-06-28 02:22:38,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:38,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:38,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:38,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:22:38,525 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:38,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:38,525 INFO L85 PathProgramCache]: Analyzing trace with hash -813502781, now seen corresponding path program 1 times [2024-06-28 02:22:38,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:38,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356746001] [2024-06-28 02:22:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:38,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:38,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:38,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356746001] [2024-06-28 02:22:38,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356746001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:38,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:38,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:38,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246314657] [2024-06-28 02:22:38,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:38,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:38,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:38,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:38,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:38,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:38,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 89 transitions, 691 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:38,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:38,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:38,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:38,838 INFO L124 PetriNetUnfolderBase]: 1183/1942 cut-off events. [2024-06-28 02:22:38,839 INFO L125 PetriNetUnfolderBase]: For 16315/16315 co-relation queries the response was YES. [2024-06-28 02:22:38,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8653 conditions, 1942 events. 1183/1942 cut-off events. For 16315/16315 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10162 event pairs, 337 based on Foata normal form. 4/1939 useless extension candidates. Maximal degree in co-relation 8618. Up to 1660 conditions per place. [2024-06-28 02:22:38,852 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 73 selfloop transitions, 31 changer transitions 0/111 dead transitions. [2024-06-28 02:22:38,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 111 transitions, 973 flow [2024-06-28 02:22:38,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 02:22:38,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-28 02:22:38,854 INFO L175 Difference]: Start difference. First operand has 80 places, 89 transitions, 691 flow. Second operand 6 states and 148 transitions. [2024-06-28 02:22:38,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 111 transitions, 973 flow [2024-06-28 02:22:38,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 111 transitions, 953 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:38,916 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 768 flow [2024-06-28 02:22:38,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=768, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2024-06-28 02:22:38,917 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 45 predicate places. [2024-06-28 02:22:38,917 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 768 flow [2024-06-28 02:22:38,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:38,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:38,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:38,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:22:38,918 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:38,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1134391939, now seen corresponding path program 2 times [2024-06-28 02:22:38,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:38,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778049748] [2024-06-28 02:22:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:38,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:39,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:39,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778049748] [2024-06-28 02:22:39,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778049748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:39,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:39,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:39,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713859312] [2024-06-28 02:22:39,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:39,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:39,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:39,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:39,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:39,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 768 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:39,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:39,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:39,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:39,223 INFO L124 PetriNetUnfolderBase]: 1236/2048 cut-off events. [2024-06-28 02:22:39,223 INFO L125 PetriNetUnfolderBase]: For 19721/19721 co-relation queries the response was YES. [2024-06-28 02:22:39,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9413 conditions, 2048 events. 1236/2048 cut-off events. For 19721/19721 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10939 event pairs, 307 based on Foata normal form. 4/2045 useless extension candidates. Maximal degree in co-relation 9375. Up to 1487 conditions per place. [2024-06-28 02:22:39,238 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 78 selfloop transitions, 35 changer transitions 0/120 dead transitions. [2024-06-28 02:22:39,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 1152 flow [2024-06-28 02:22:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 02:22:39,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-06-28 02:22:39,240 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 768 flow. Second operand 6 states and 154 transitions. [2024-06-28 02:22:39,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 1152 flow [2024-06-28 02:22:39,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 120 transitions, 1075 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:39,266 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 806 flow [2024-06-28 02:22:39,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=806, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2024-06-28 02:22:39,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2024-06-28 02:22:39,267 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 806 flow [2024-06-28 02:22:39,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:39,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:39,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:39,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:22:39,268 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:39,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1246585482, now seen corresponding path program 2 times [2024-06-28 02:22:39,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:39,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750606243] [2024-06-28 02:22:39,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:39,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:39,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:39,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750606243] [2024-06-28 02:22:39,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750606243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:39,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:39,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:39,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899513354] [2024-06-28 02:22:39,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:39,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:39,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:39,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:39,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:39,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:39,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 806 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:39,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:39,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:39,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:39,556 INFO L124 PetriNetUnfolderBase]: 1238/2061 cut-off events. [2024-06-28 02:22:39,556 INFO L125 PetriNetUnfolderBase]: For 21687/21687 co-relation queries the response was YES. [2024-06-28 02:22:39,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9666 conditions, 2061 events. 1238/2061 cut-off events. For 21687/21687 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11052 event pairs, 341 based on Foata normal form. 2/2062 useless extension candidates. Maximal degree in co-relation 9627. Up to 1893 conditions per place. [2024-06-28 02:22:39,570 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 87 selfloop transitions, 17 changer transitions 0/111 dead transitions. [2024-06-28 02:22:39,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 111 transitions, 1084 flow [2024-06-28 02:22:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:22:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:22:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-06-28 02:22:39,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-28 02:22:39,571 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 806 flow. Second operand 4 states and 104 transitions. [2024-06-28 02:22:39,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 111 transitions, 1084 flow [2024-06-28 02:22:39,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 1022 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:39,596 INFO L231 Difference]: Finished difference. Result has 90 places, 97 transitions, 832 flow [2024-06-28 02:22:39,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=832, PETRI_PLACES=90, PETRI_TRANSITIONS=97} [2024-06-28 02:22:39,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2024-06-28 02:22:39,597 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 97 transitions, 832 flow [2024-06-28 02:22:39,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:39,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:39,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:39,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:22:39,598 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:39,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:39,598 INFO L85 PathProgramCache]: Analyzing trace with hash -632660391, now seen corresponding path program 1 times [2024-06-28 02:22:39,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:39,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004764569] [2024-06-28 02:22:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:39,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:39,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:39,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004764569] [2024-06-28 02:22:39,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004764569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:39,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:39,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:39,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240229743] [2024-06-28 02:22:39,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:39,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:39,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:39,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:39,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:39,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 97 transitions, 832 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:39,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:39,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:39,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:39,929 INFO L124 PetriNetUnfolderBase]: 1279/2130 cut-off events. [2024-06-28 02:22:39,929 INFO L125 PetriNetUnfolderBase]: For 25618/25618 co-relation queries the response was YES. [2024-06-28 02:22:39,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10138 conditions, 2130 events. 1279/2130 cut-off events. For 25618/25618 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11644 event pairs, 286 based on Foata normal form. 12/2132 useless extension candidates. Maximal degree in co-relation 10097. Up to 1066 conditions per place. [2024-06-28 02:22:39,944 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 84 selfloop transitions, 32 changer transitions 0/123 dead transitions. [2024-06-28 02:22:39,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 123 transitions, 1174 flow [2024-06-28 02:22:39,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:39,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 02:22:39,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-28 02:22:39,946 INFO L175 Difference]: Start difference. First operand has 90 places, 97 transitions, 832 flow. Second operand 6 states and 148 transitions. [2024-06-28 02:22:39,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 123 transitions, 1174 flow [2024-06-28 02:22:39,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 123 transitions, 1134 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:39,970 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 874 flow [2024-06-28 02:22:39,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=874, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2024-06-28 02:22:39,970 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-28 02:22:39,970 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 874 flow [2024-06-28 02:22:39,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:39,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:39,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:39,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:22:39,971 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:39,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:39,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1721396175, now seen corresponding path program 2 times [2024-06-28 02:22:39,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:39,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681561473] [2024-06-28 02:22:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:39,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:40,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:40,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681561473] [2024-06-28 02:22:40,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681561473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:40,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:40,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:40,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710122621] [2024-06-28 02:22:40,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:40,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:40,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:40,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:40,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:40,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:40,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 874 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:40,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:40,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:40,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:40,283 INFO L124 PetriNetUnfolderBase]: 1259/2094 cut-off events. [2024-06-28 02:22:40,283 INFO L125 PetriNetUnfolderBase]: For 26149/26149 co-relation queries the response was YES. [2024-06-28 02:22:40,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10177 conditions, 2094 events. 1259/2094 cut-off events. For 26149/26149 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11304 event pairs, 292 based on Foata normal form. 12/2099 useless extension candidates. Maximal degree in co-relation 10135. Up to 1555 conditions per place. [2024-06-28 02:22:40,298 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 82 selfloop transitions, 35 changer transitions 0/124 dead transitions. [2024-06-28 02:22:40,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 124 transitions, 1176 flow [2024-06-28 02:22:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:40,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 02:22:40,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-06-28 02:22:40,299 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 874 flow. Second operand 6 states and 153 transitions. [2024-06-28 02:22:40,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 124 transitions, 1176 flow [2024-06-28 02:22:40,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 124 transitions, 1123 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:40,326 INFO L231 Difference]: Finished difference. Result has 97 places, 98 transitions, 897 flow [2024-06-28 02:22:40,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=897, PETRI_PLACES=97, PETRI_TRANSITIONS=98} [2024-06-28 02:22:40,327 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-28 02:22:40,327 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 98 transitions, 897 flow [2024-06-28 02:22:40,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:40,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:40,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:40,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:22:40,328 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:40,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:40,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1176641722, now seen corresponding path program 1 times [2024-06-28 02:22:40,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:40,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866484283] [2024-06-28 02:22:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:40,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:40,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:40,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866484283] [2024-06-28 02:22:40,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866484283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:40,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:40,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:40,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83094044] [2024-06-28 02:22:40,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:40,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:40,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:40,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:40,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:40,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 98 transitions, 897 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:40,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:40,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:40,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:40,663 INFO L124 PetriNetUnfolderBase]: 1298/2171 cut-off events. [2024-06-28 02:22:40,663 INFO L125 PetriNetUnfolderBase]: For 28287/28287 co-relation queries the response was YES. [2024-06-28 02:22:40,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 2171 events. 1298/2171 cut-off events. For 28287/28287 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11933 event pairs, 357 based on Foata normal form. 3/2164 useless extension candidates. Maximal degree in co-relation 10550. Up to 1766 conditions per place. [2024-06-28 02:22:40,681 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 90 selfloop transitions, 48 changer transitions 0/145 dead transitions. [2024-06-28 02:22:40,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 145 transitions, 1519 flow [2024-06-28 02:22:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:40,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 02:22:40,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-06-28 02:22:40,683 INFO L175 Difference]: Start difference. First operand has 97 places, 98 transitions, 897 flow. Second operand 6 states and 159 transitions. [2024-06-28 02:22:40,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 145 transitions, 1519 flow [2024-06-28 02:22:40,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 145 transitions, 1436 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:40,713 INFO L231 Difference]: Finished difference. Result has 100 places, 118 transitions, 1128 flow [2024-06-28 02:22:40,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1128, PETRI_PLACES=100, PETRI_TRANSITIONS=118} [2024-06-28 02:22:40,713 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 59 predicate places. [2024-06-28 02:22:40,714 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 118 transitions, 1128 flow [2024-06-28 02:22:40,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:40,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:40,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:40,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:22:40,714 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:40,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:40,715 INFO L85 PathProgramCache]: Analyzing trace with hash 413521959, now seen corresponding path program 3 times [2024-06-28 02:22:40,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:40,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858942224] [2024-06-28 02:22:40,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:40,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:40,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:40,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858942224] [2024-06-28 02:22:40,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858942224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:40,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:40,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:40,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540191695] [2024-06-28 02:22:40,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:40,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:40,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:40,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:40,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:40,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:40,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 118 transitions, 1128 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:40,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:40,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:40,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:41,068 INFO L124 PetriNetUnfolderBase]: 1400/2369 cut-off events. [2024-06-28 02:22:41,069 INFO L125 PetriNetUnfolderBase]: For 36322/36333 co-relation queries the response was YES. [2024-06-28 02:22:41,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12151 conditions, 2369 events. 1400/2369 cut-off events. For 36322/36333 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 13422 event pairs, 318 based on Foata normal form. 22/2383 useless extension candidates. Maximal degree in co-relation 12105. Up to 1692 conditions per place. [2024-06-28 02:22:41,085 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 114 selfloop transitions, 30 changer transitions 0/151 dead transitions. [2024-06-28 02:22:41,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 151 transitions, 1602 flow [2024-06-28 02:22:41,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 02:22:41,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-28 02:22:41,086 INFO L175 Difference]: Start difference. First operand has 100 places, 118 transitions, 1128 flow. Second operand 6 states and 156 transitions. [2024-06-28 02:22:41,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 151 transitions, 1602 flow [2024-06-28 02:22:41,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 151 transitions, 1564 flow, removed 19 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:41,123 INFO L231 Difference]: Finished difference. Result has 106 places, 120 transitions, 1184 flow [2024-06-28 02:22:41,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1184, PETRI_PLACES=106, PETRI_TRANSITIONS=120} [2024-06-28 02:22:41,123 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-06-28 02:22:41,124 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 120 transitions, 1184 flow [2024-06-28 02:22:41,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:41,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:41,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:41,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:22:41,124 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:41,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:41,125 INFO L85 PathProgramCache]: Analyzing trace with hash -179426513, now seen corresponding path program 4 times [2024-06-28 02:22:41,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:41,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126820583] [2024-06-28 02:22:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:41,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:41,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:41,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126820583] [2024-06-28 02:22:41,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126820583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:41,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:41,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:41,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067578731] [2024-06-28 02:22:41,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:41,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:41,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:41,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:41,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:41,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:41,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 120 transitions, 1184 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:41,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:41,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:41,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:41,499 INFO L124 PetriNetUnfolderBase]: 1458/2467 cut-off events. [2024-06-28 02:22:41,500 INFO L125 PetriNetUnfolderBase]: For 41061/41072 co-relation queries the response was YES. [2024-06-28 02:22:41,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12788 conditions, 2467 events. 1458/2467 cut-off events. For 41061/41072 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14168 event pairs, 423 based on Foata normal form. 26/2485 useless extension candidates. Maximal degree in co-relation 12739. Up to 2045 conditions per place. [2024-06-28 02:22:41,516 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 113 selfloop transitions, 27 changer transitions 0/147 dead transitions. [2024-06-28 02:22:41,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 147 transitions, 1551 flow [2024-06-28 02:22:41,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 02:22:41,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6291666666666667 [2024-06-28 02:22:41,517 INFO L175 Difference]: Start difference. First operand has 106 places, 120 transitions, 1184 flow. Second operand 6 states and 151 transitions. [2024-06-28 02:22:41,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 147 transitions, 1551 flow [2024-06-28 02:22:41,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 147 transitions, 1509 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:41,556 INFO L231 Difference]: Finished difference. Result has 110 places, 121 transitions, 1220 flow [2024-06-28 02:22:41,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1220, PETRI_PLACES=110, PETRI_TRANSITIONS=121} [2024-06-28 02:22:41,557 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-06-28 02:22:41,557 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 121 transitions, 1220 flow [2024-06-28 02:22:41,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:41,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:41,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:41,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:22:41,557 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:41,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:41,558 INFO L85 PathProgramCache]: Analyzing trace with hash -174064133, now seen corresponding path program 5 times [2024-06-28 02:22:41,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:41,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664987246] [2024-06-28 02:22:41,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:41,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:41,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:41,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664987246] [2024-06-28 02:22:41,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664987246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:41,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:41,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:41,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832518251] [2024-06-28 02:22:41,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:41,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:41,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:41,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:41,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:41,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:41,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 121 transitions, 1220 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:41,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:41,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:41,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:41,923 INFO L124 PetriNetUnfolderBase]: 1430/2422 cut-off events. [2024-06-28 02:22:41,924 INFO L125 PetriNetUnfolderBase]: For 40573/40576 co-relation queries the response was YES. [2024-06-28 02:22:41,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12523 conditions, 2422 events. 1430/2422 cut-off events. For 40573/40576 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13841 event pairs, 410 based on Foata normal form. 18/2431 useless extension candidates. Maximal degree in co-relation 12472. Up to 2001 conditions per place. [2024-06-28 02:22:41,940 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 110 selfloop transitions, 27 changer transitions 0/144 dead transitions. [2024-06-28 02:22:41,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 144 transitions, 1558 flow [2024-06-28 02:22:41,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:41,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 02:22:41,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-28 02:22:41,941 INFO L175 Difference]: Start difference. First operand has 110 places, 121 transitions, 1220 flow. Second operand 6 states and 148 transitions. [2024-06-28 02:22:41,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 144 transitions, 1558 flow [2024-06-28 02:22:41,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 144 transitions, 1499 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:41,986 INFO L231 Difference]: Finished difference. Result has 112 places, 121 transitions, 1222 flow [2024-06-28 02:22:41,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1222, PETRI_PLACES=112, PETRI_TRANSITIONS=121} [2024-06-28 02:22:41,987 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-28 02:22:41,987 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 121 transitions, 1222 flow [2024-06-28 02:22:41,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:41,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:41,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:41,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:22:41,988 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:41,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:41,988 INFO L85 PathProgramCache]: Analyzing trace with hash -173848931, now seen corresponding path program 1 times [2024-06-28 02:22:41,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:41,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948708595] [2024-06-28 02:22:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:41,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:42,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:42,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948708595] [2024-06-28 02:22:42,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948708595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:42,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:42,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:42,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596547957] [2024-06-28 02:22:42,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:42,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:42,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:42,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:42,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:42,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:42,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 121 transitions, 1222 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:42,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:42,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:42,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:42,364 INFO L124 PetriNetUnfolderBase]: 1471/2503 cut-off events. [2024-06-28 02:22:42,364 INFO L125 PetriNetUnfolderBase]: For 42662/42665 co-relation queries the response was YES. [2024-06-28 02:22:42,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12861 conditions, 2503 events. 1471/2503 cut-off events. For 42662/42665 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 14512 event pairs, 348 based on Foata normal form. 14/2508 useless extension candidates. Maximal degree in co-relation 12809. Up to 1783 conditions per place. [2024-06-28 02:22:42,378 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 110 selfloop transitions, 31 changer transitions 0/148 dead transitions. [2024-06-28 02:22:42,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 148 transitions, 1593 flow [2024-06-28 02:22:42,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:42,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 02:22:42,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6291666666666667 [2024-06-28 02:22:42,380 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 1222 flow. Second operand 6 states and 151 transitions. [2024-06-28 02:22:42,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 148 transitions, 1593 flow [2024-06-28 02:22:42,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 148 transitions, 1525 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:42,420 INFO L231 Difference]: Finished difference. Result has 113 places, 122 transitions, 1239 flow [2024-06-28 02:22:42,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1239, PETRI_PLACES=113, PETRI_TRANSITIONS=122} [2024-06-28 02:22:42,421 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2024-06-28 02:22:42,421 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 122 transitions, 1239 flow [2024-06-28 02:22:42,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:42,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:42,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:42,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:22:42,422 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:42,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash 979984476, now seen corresponding path program 2 times [2024-06-28 02:22:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:42,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084378146] [2024-06-28 02:22:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:42,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:42,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084378146] [2024-06-28 02:22:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084378146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:42,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:42,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:42,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735572123] [2024-06-28 02:22:42,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:42,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:42,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:42,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:42,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:42,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:42,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 122 transitions, 1239 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:42,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:42,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:42,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:42,727 INFO L124 PetriNetUnfolderBase]: 1514/2558 cut-off events. [2024-06-28 02:22:42,727 INFO L125 PetriNetUnfolderBase]: For 43664/43664 co-relation queries the response was YES. [2024-06-28 02:22:42,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13391 conditions, 2558 events. 1514/2558 cut-off events. For 43664/43664 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14820 event pairs, 408 based on Foata normal form. 3/2551 useless extension candidates. Maximal degree in co-relation 13338. Up to 2099 conditions per place. [2024-06-28 02:22:42,744 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 93 selfloop transitions, 53 changer transitions 0/153 dead transitions. [2024-06-28 02:22:42,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 153 transitions, 1849 flow [2024-06-28 02:22:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 02:22:42,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-06-28 02:22:42,745 INFO L175 Difference]: Start difference. First operand has 113 places, 122 transitions, 1239 flow. Second operand 6 states and 153 transitions. [2024-06-28 02:22:42,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 153 transitions, 1849 flow [2024-06-28 02:22:42,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 153 transitions, 1779 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:42,807 INFO L231 Difference]: Finished difference. Result has 116 places, 132 transitions, 1406 flow [2024-06-28 02:22:42,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1406, PETRI_PLACES=116, PETRI_TRANSITIONS=132} [2024-06-28 02:22:42,807 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-06-28 02:22:42,807 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 132 transitions, 1406 flow [2024-06-28 02:22:42,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:42,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:42,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:42,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:22:42,808 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:42,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:42,808 INFO L85 PathProgramCache]: Analyzing trace with hash 379698, now seen corresponding path program 1 times [2024-06-28 02:22:42,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:42,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274120438] [2024-06-28 02:22:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:42,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:42,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:42,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274120438] [2024-06-28 02:22:42,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274120438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:42,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:42,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:42,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648445500] [2024-06-28 02:22:42,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:42,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:42,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:42,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:42,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:42,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:42,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 132 transitions, 1406 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:42,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:42,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:42,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:43,118 INFO L124 PetriNetUnfolderBase]: 1519/2576 cut-off events. [2024-06-28 02:22:43,118 INFO L125 PetriNetUnfolderBase]: For 45748/45748 co-relation queries the response was YES. [2024-06-28 02:22:43,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13655 conditions, 2576 events. 1519/2576 cut-off events. For 45748/45748 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14918 event pairs, 386 based on Foata normal form. 1/2576 useless extension candidates. Maximal degree in co-relation 13600. Up to 2342 conditions per place. [2024-06-28 02:22:43,135 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 123 selfloop transitions, 25 changer transitions 0/155 dead transitions. [2024-06-28 02:22:43,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 155 transitions, 1882 flow [2024-06-28 02:22:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 02:22:43,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-06-28 02:22:43,137 INFO L175 Difference]: Start difference. First operand has 116 places, 132 transitions, 1406 flow. Second operand 6 states and 141 transitions. [2024-06-28 02:22:43,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 155 transitions, 1882 flow [2024-06-28 02:22:43,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 155 transitions, 1793 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:43,198 INFO L231 Difference]: Finished difference. Result has 120 places, 138 transitions, 1467 flow [2024-06-28 02:22:43,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1467, PETRI_PLACES=120, PETRI_TRANSITIONS=138} [2024-06-28 02:22:43,198 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-06-28 02:22:43,198 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 138 transitions, 1467 flow [2024-06-28 02:22:43,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:43,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:43,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:43,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:22:43,199 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:43,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:43,199 INFO L85 PathProgramCache]: Analyzing trace with hash 807718459, now seen corresponding path program 2 times [2024-06-28 02:22:43,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:43,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317817442] [2024-06-28 02:22:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:43,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:43,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:43,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317817442] [2024-06-28 02:22:43,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317817442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:43,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:43,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:43,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527504369] [2024-06-28 02:22:43,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:43,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:43,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:43,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:43,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:43,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:43,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 138 transitions, 1467 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:43,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:43,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:43,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:43,582 INFO L124 PetriNetUnfolderBase]: 1499/2535 cut-off events. [2024-06-28 02:22:43,583 INFO L125 PetriNetUnfolderBase]: For 48842/48842 co-relation queries the response was YES. [2024-06-28 02:22:43,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13324 conditions, 2535 events. 1499/2535 cut-off events. For 48842/48842 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14578 event pairs, 274 based on Foata normal form. 12/2537 useless extension candidates. Maximal degree in co-relation 13268. Up to 1931 conditions per place. [2024-06-28 02:22:43,603 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 125 selfloop transitions, 35 changer transitions 0/167 dead transitions. [2024-06-28 02:22:43,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 167 transitions, 1869 flow [2024-06-28 02:22:43,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 02:22:43,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-28 02:22:43,605 INFO L175 Difference]: Start difference. First operand has 120 places, 138 transitions, 1467 flow. Second operand 6 states and 156 transitions. [2024-06-28 02:22:43,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 167 transitions, 1869 flow [2024-06-28 02:22:43,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 167 transitions, 1817 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:43,685 INFO L231 Difference]: Finished difference. Result has 124 places, 138 transitions, 1491 flow [2024-06-28 02:22:43,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1491, PETRI_PLACES=124, PETRI_TRANSITIONS=138} [2024-06-28 02:22:43,685 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-28 02:22:43,686 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 138 transitions, 1491 flow [2024-06-28 02:22:43,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:43,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:43,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:43,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:22:43,686 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:43,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:43,687 INFO L85 PathProgramCache]: Analyzing trace with hash -377706113, now seen corresponding path program 3 times [2024-06-28 02:22:43,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:43,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710386216] [2024-06-28 02:22:43,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:43,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:43,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:43,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710386216] [2024-06-28 02:22:43,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710386216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:43,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:43,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:43,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615025873] [2024-06-28 02:22:43,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:43,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:43,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:43,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:43,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 138 transitions, 1491 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:43,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:43,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:43,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:44,061 INFO L124 PetriNetUnfolderBase]: 1479/2514 cut-off events. [2024-06-28 02:22:44,061 INFO L125 PetriNetUnfolderBase]: For 49649/49649 co-relation queries the response was YES. [2024-06-28 02:22:44,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13231 conditions, 2514 events. 1479/2514 cut-off events. For 49649/49649 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14564 event pairs, 254 based on Foata normal form. 12/2516 useless extension candidates. Maximal degree in co-relation 13173. Up to 1219 conditions per place. [2024-06-28 02:22:44,078 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 118 selfloop transitions, 36 changer transitions 0/161 dead transitions. [2024-06-28 02:22:44,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 161 transitions, 1821 flow [2024-06-28 02:22:44,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:44,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 02:22:44,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-06-28 02:22:44,079 INFO L175 Difference]: Start difference. First operand has 124 places, 138 transitions, 1491 flow. Second operand 6 states and 146 transitions. [2024-06-28 02:22:44,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 161 transitions, 1821 flow [2024-06-28 02:22:44,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 161 transitions, 1720 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:44,156 INFO L231 Difference]: Finished difference. Result has 124 places, 137 transitions, 1420 flow [2024-06-28 02:22:44,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1420, PETRI_PLACES=124, PETRI_TRANSITIONS=137} [2024-06-28 02:22:44,156 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-28 02:22:44,156 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 137 transitions, 1420 flow [2024-06-28 02:22:44,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2024-06-28 02:22:44,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:44,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:44,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:22:44,157 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:44,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:44,158 INFO L85 PathProgramCache]: Analyzing trace with hash -909435510, now seen corresponding path program 2 times [2024-06-28 02:22:44,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:44,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640044410] [2024-06-28 02:22:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:44,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:44,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:44,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640044410] [2024-06-28 02:22:44,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640044410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:44,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:44,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233122991] [2024-06-28 02:22:44,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:44,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:44,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:44,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:44,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 137 transitions, 1420 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:44,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:44,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:44,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:44,546 INFO L124 PetriNetUnfolderBase]: 1476/2508 cut-off events. [2024-06-28 02:22:44,546 INFO L125 PetriNetUnfolderBase]: For 44157/44157 co-relation queries the response was YES. [2024-06-28 02:22:44,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13073 conditions, 2508 events. 1476/2508 cut-off events. For 44157/44157 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14540 event pairs, 358 based on Foata normal form. 1/2508 useless extension candidates. Maximal degree in co-relation 13014. Up to 2281 conditions per place. [2024-06-28 02:22:44,566 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 125 selfloop transitions, 20 changer transitions 0/152 dead transitions. [2024-06-28 02:22:44,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 152 transitions, 1748 flow [2024-06-28 02:22:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 02:22:44,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.605 [2024-06-28 02:22:44,568 INFO L175 Difference]: Start difference. First operand has 124 places, 137 transitions, 1420 flow. Second operand 5 states and 121 transitions. [2024-06-28 02:22:44,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 152 transitions, 1748 flow [2024-06-28 02:22:44,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 152 transitions, 1578 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:44,643 INFO L231 Difference]: Finished difference. Result has 122 places, 137 transitions, 1296 flow [2024-06-28 02:22:44,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1296, PETRI_PLACES=122, PETRI_TRANSITIONS=137} [2024-06-28 02:22:44,644 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2024-06-28 02:22:44,644 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 137 transitions, 1296 flow [2024-06-28 02:22:44,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:44,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:44,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:44,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:22:44,645 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:44,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:44,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1347882524, now seen corresponding path program 3 times [2024-06-28 02:22:44,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:44,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209913655] [2024-06-28 02:22:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:44,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:44,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:44,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209913655] [2024-06-28 02:22:44,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209913655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:44,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:44,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:44,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054898218] [2024-06-28 02:22:44,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:44,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:44,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:44,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:44,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:44,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:44,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 137 transitions, 1296 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:44,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:44,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:44,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:45,067 INFO L124 PetriNetUnfolderBase]: 1578/2676 cut-off events. [2024-06-28 02:22:45,067 INFO L125 PetriNetUnfolderBase]: For 50495/50498 co-relation queries the response was YES. [2024-06-28 02:22:45,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13519 conditions, 2676 events. 1578/2676 cut-off events. For 50495/50498 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 15696 event pairs, 362 based on Foata normal form. 8/2682 useless extension candidates. Maximal degree in co-relation 13461. Up to 2191 conditions per place. [2024-06-28 02:22:45,084 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 115 selfloop transitions, 68 changer transitions 0/190 dead transitions. [2024-06-28 02:22:45,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 190 transitions, 2101 flow [2024-06-28 02:22:45,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-28 02:22:45,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-28 02:22:45,087 INFO L175 Difference]: Start difference. First operand has 122 places, 137 transitions, 1296 flow. Second operand 6 states and 162 transitions. [2024-06-28 02:22:45,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 190 transitions, 2101 flow [2024-06-28 02:22:45,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 190 transitions, 2035 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:45,168 INFO L231 Difference]: Finished difference. Result has 126 places, 161 transitions, 1719 flow [2024-06-28 02:22:45,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1719, PETRI_PLACES=126, PETRI_TRANSITIONS=161} [2024-06-28 02:22:45,168 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 85 predicate places. [2024-06-28 02:22:45,169 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 161 transitions, 1719 flow [2024-06-28 02:22:45,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:45,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:45,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:45,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:22:45,169 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:45,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1179730858, now seen corresponding path program 1 times [2024-06-28 02:22:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:45,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442497428] [2024-06-28 02:22:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:45,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:45,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:45,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442497428] [2024-06-28 02:22:45,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442497428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:45,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:45,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:45,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506572436] [2024-06-28 02:22:45,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:45,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:45,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:45,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:45,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:45,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 161 transitions, 1719 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:45,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:45,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:45,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:45,538 INFO L124 PetriNetUnfolderBase]: 1601/2701 cut-off events. [2024-06-28 02:22:45,538 INFO L125 PetriNetUnfolderBase]: For 56967/56967 co-relation queries the response was YES. [2024-06-28 02:22:45,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14960 conditions, 2701 events. 1601/2701 cut-off events. For 56967/56967 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 15830 event pairs, 395 based on Foata normal form. 3/2697 useless extension candidates. Maximal degree in co-relation 14899. Up to 2191 conditions per place. [2024-06-28 02:22:45,559 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 109 selfloop transitions, 77 changer transitions 0/193 dead transitions. [2024-06-28 02:22:45,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 193 transitions, 2457 flow [2024-06-28 02:22:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:45,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 02:22:45,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-28 02:22:45,561 INFO L175 Difference]: Start difference. First operand has 126 places, 161 transitions, 1719 flow. Second operand 6 states and 152 transitions. [2024-06-28 02:22:45,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 193 transitions, 2457 flow [2024-06-28 02:22:45,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 193 transitions, 2407 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:45,646 INFO L231 Difference]: Finished difference. Result has 132 places, 174 transitions, 2015 flow [2024-06-28 02:22:45,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2015, PETRI_PLACES=132, PETRI_TRANSITIONS=174} [2024-06-28 02:22:45,646 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-06-28 02:22:45,646 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 174 transitions, 2015 flow [2024-06-28 02:22:45,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:45,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:45,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:45,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:22:45,647 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:45,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1147698722, now seen corresponding path program 2 times [2024-06-28 02:22:45,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:45,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216420396] [2024-06-28 02:22:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:45,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:45,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:45,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216420396] [2024-06-28 02:22:45,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216420396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:45,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:45,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:45,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535155416] [2024-06-28 02:22:45,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:45,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:45,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:45,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:45,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:45,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:45,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 174 transitions, 2015 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:45,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:45,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:45,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:46,027 INFO L124 PetriNetUnfolderBase]: 1667/2816 cut-off events. [2024-06-28 02:22:46,027 INFO L125 PetriNetUnfolderBase]: For 63471/63471 co-relation queries the response was YES. [2024-06-28 02:22:46,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16449 conditions, 2816 events. 1667/2816 cut-off events. For 63471/63471 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 16618 event pairs, 359 based on Foata normal form. 4/2819 useless extension candidates. Maximal degree in co-relation 16385. Up to 2518 conditions per place. [2024-06-28 02:22:46,049 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 167 selfloop transitions, 37 changer transitions 0/211 dead transitions. [2024-06-28 02:22:46,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 211 transitions, 2850 flow [2024-06-28 02:22:46,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 02:22:46,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 02:22:46,050 INFO L175 Difference]: Start difference. First operand has 132 places, 174 transitions, 2015 flow. Second operand 7 states and 160 transitions. [2024-06-28 02:22:46,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 211 transitions, 2850 flow [2024-06-28 02:22:46,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 211 transitions, 2754 flow, removed 48 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:46,155 INFO L231 Difference]: Finished difference. Result has 140 places, 195 transitions, 2374 flow [2024-06-28 02:22:46,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2374, PETRI_PLACES=140, PETRI_TRANSITIONS=195} [2024-06-28 02:22:46,155 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-28 02:22:46,156 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 195 transitions, 2374 flow [2024-06-28 02:22:46,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:46,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:46,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:46,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:22:46,156 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:46,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:46,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1348067222, now seen corresponding path program 3 times [2024-06-28 02:22:46,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:46,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935708648] [2024-06-28 02:22:46,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:46,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:46,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:46,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935708648] [2024-06-28 02:22:46,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935708648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:46,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:46,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:46,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985954160] [2024-06-28 02:22:46,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:46,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:46,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:46,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 195 transitions, 2374 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:46,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:46,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:46,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:46,613 INFO L124 PetriNetUnfolderBase]: 1665/2822 cut-off events. [2024-06-28 02:22:46,613 INFO L125 PetriNetUnfolderBase]: For 66488/66488 co-relation queries the response was YES. [2024-06-28 02:22:46,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16572 conditions, 2822 events. 1665/2822 cut-off events. For 66488/66488 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 16672 event pairs, 354 based on Foata normal form. 6/2827 useless extension candidates. Maximal degree in co-relation 16504. Up to 2266 conditions per place. [2024-06-28 02:22:46,633 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 122 selfloop transitions, 99 changer transitions 0/228 dead transitions. [2024-06-28 02:22:46,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 228 transitions, 3087 flow [2024-06-28 02:22:46,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 02:22:46,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6464285714285715 [2024-06-28 02:22:46,635 INFO L175 Difference]: Start difference. First operand has 140 places, 195 transitions, 2374 flow. Second operand 7 states and 181 transitions. [2024-06-28 02:22:46,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 228 transitions, 3087 flow [2024-06-28 02:22:46,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 228 transitions, 2957 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:46,742 INFO L231 Difference]: Finished difference. Result has 144 places, 200 transitions, 2559 flow [2024-06-28 02:22:46,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2559, PETRI_PLACES=144, PETRI_TRANSITIONS=200} [2024-06-28 02:22:46,743 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-28 02:22:46,743 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 200 transitions, 2559 flow [2024-06-28 02:22:46,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:46,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:46,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:46,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:22:46,744 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:46,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1348313486, now seen corresponding path program 1 times [2024-06-28 02:22:46,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:46,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447972222] [2024-06-28 02:22:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:46,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:46,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:46,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447972222] [2024-06-28 02:22:46,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447972222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:46,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:46,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:46,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953153064] [2024-06-28 02:22:46,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:46,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:46,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:46,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 200 transitions, 2559 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:46,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:46,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:46,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:47,137 INFO L124 PetriNetUnfolderBase]: 1660/2798 cut-off events. [2024-06-28 02:22:47,137 INFO L125 PetriNetUnfolderBase]: For 68146/68146 co-relation queries the response was YES. [2024-06-28 02:22:47,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16921 conditions, 2798 events. 1660/2798 cut-off events. For 68146/68146 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 16438 event pairs, 355 based on Foata normal form. 2/2799 useless extension candidates. Maximal degree in co-relation 16852. Up to 2557 conditions per place. [2024-06-28 02:22:47,159 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 194 selfloop transitions, 10 changer transitions 0/211 dead transitions. [2024-06-28 02:22:47,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 211 transitions, 3019 flow [2024-06-28 02:22:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:22:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:22:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-28 02:22:47,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-28 02:22:47,160 INFO L175 Difference]: Start difference. First operand has 144 places, 200 transitions, 2559 flow. Second operand 4 states and 95 transitions. [2024-06-28 02:22:47,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 211 transitions, 3019 flow [2024-06-28 02:22:47,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 211 transitions, 2841 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:47,283 INFO L231 Difference]: Finished difference. Result has 144 places, 202 transitions, 2440 flow [2024-06-28 02:22:47,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2381, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2440, PETRI_PLACES=144, PETRI_TRANSITIONS=202} [2024-06-28 02:22:47,284 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-28 02:22:47,284 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 202 transitions, 2440 flow [2024-06-28 02:22:47,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:47,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:47,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:47,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:22:47,285 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:47,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1547518576, now seen corresponding path program 1 times [2024-06-28 02:22:47,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:47,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110766131] [2024-06-28 02:22:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:47,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:47,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:47,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110766131] [2024-06-28 02:22:47,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110766131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:47,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:47,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:47,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111339583] [2024-06-28 02:22:47,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:47,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:47,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:47,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:47,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:47,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 202 transitions, 2440 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:47,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:47,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:47,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:47,724 INFO L124 PetriNetUnfolderBase]: 1699/2858 cut-off events. [2024-06-28 02:22:47,725 INFO L125 PetriNetUnfolderBase]: For 74731/74731 co-relation queries the response was YES. [2024-06-28 02:22:47,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17154 conditions, 2858 events. 1699/2858 cut-off events. For 74731/74731 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16899 event pairs, 389 based on Foata normal form. 3/2851 useless extension candidates. Maximal degree in co-relation 17084. Up to 2080 conditions per place. [2024-06-28 02:22:47,748 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 117 selfloop transitions, 124 changer transitions 0/248 dead transitions. [2024-06-28 02:22:47,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 248 transitions, 3454 flow [2024-06-28 02:22:47,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:47,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 02:22:47,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6464285714285715 [2024-06-28 02:22:47,749 INFO L175 Difference]: Start difference. First operand has 144 places, 202 transitions, 2440 flow. Second operand 7 states and 181 transitions. [2024-06-28 02:22:47,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 248 transitions, 3454 flow [2024-06-28 02:22:47,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 248 transitions, 3407 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:47,895 INFO L231 Difference]: Finished difference. Result has 151 places, 221 transitions, 3031 flow [2024-06-28 02:22:47,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2393, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3031, PETRI_PLACES=151, PETRI_TRANSITIONS=221} [2024-06-28 02:22:47,895 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-06-28 02:22:47,896 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 221 transitions, 3031 flow [2024-06-28 02:22:47,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:47,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:47,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:47,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:22:47,896 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:47,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:47,896 INFO L85 PathProgramCache]: Analyzing trace with hash 6049779, now seen corresponding path program 1 times [2024-06-28 02:22:47,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:47,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369378836] [2024-06-28 02:22:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:47,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:47,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:47,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369378836] [2024-06-28 02:22:47,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369378836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:47,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:47,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:47,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118949592] [2024-06-28 02:22:47,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:47,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:47,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:47,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:47,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:47,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 221 transitions, 3031 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:47,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:47,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:47,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:48,382 INFO L124 PetriNetUnfolderBase]: 1725/2889 cut-off events. [2024-06-28 02:22:48,382 INFO L125 PetriNetUnfolderBase]: For 83486/83486 co-relation queries the response was YES. [2024-06-28 02:22:48,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18991 conditions, 2889 events. 1725/2889 cut-off events. For 83486/83486 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17003 event pairs, 386 based on Foata normal form. 2/2881 useless extension candidates. Maximal degree in co-relation 18918. Up to 2320 conditions per place. [2024-06-28 02:22:48,408 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 155 selfloop transitions, 91 changer transitions 0/253 dead transitions. [2024-06-28 02:22:48,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 253 transitions, 3982 flow [2024-06-28 02:22:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:48,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 02:22:48,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-06-28 02:22:48,409 INFO L175 Difference]: Start difference. First operand has 151 places, 221 transitions, 3031 flow. Second operand 6 states and 153 transitions. [2024-06-28 02:22:48,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 253 transitions, 3982 flow [2024-06-28 02:22:48,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 253 transitions, 3898 flow, removed 39 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:48,583 INFO L231 Difference]: Finished difference. Result has 157 places, 231 transitions, 3360 flow [2024-06-28 02:22:48,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3360, PETRI_PLACES=157, PETRI_TRANSITIONS=231} [2024-06-28 02:22:48,584 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2024-06-28 02:22:48,584 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 231 transitions, 3360 flow [2024-06-28 02:22:48,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:48,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:48,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:48,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:22:48,585 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:48,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash 11763699, now seen corresponding path program 2 times [2024-06-28 02:22:48,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:48,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014005755] [2024-06-28 02:22:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:48,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:48,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:48,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014005755] [2024-06-28 02:22:48,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014005755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:48,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:48,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468241936] [2024-06-28 02:22:48,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:48,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:48,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:48,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:48,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 231 transitions, 3360 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:48,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:48,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:48,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:49,078 INFO L124 PetriNetUnfolderBase]: 1719/2883 cut-off events. [2024-06-28 02:22:49,078 INFO L125 PetriNetUnfolderBase]: For 85285/85285 co-relation queries the response was YES. [2024-06-28 02:22:49,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18855 conditions, 2883 events. 1719/2883 cut-off events. For 85285/85285 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17036 event pairs, 386 based on Foata normal form. 2/2875 useless extension candidates. Maximal degree in co-relation 18778. Up to 2317 conditions per place. [2024-06-28 02:22:49,106 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 156 selfloop transitions, 87 changer transitions 0/250 dead transitions. [2024-06-28 02:22:49,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 250 transitions, 4102 flow [2024-06-28 02:22:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 02:22:49,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6291666666666667 [2024-06-28 02:22:49,107 INFO L175 Difference]: Start difference. First operand has 157 places, 231 transitions, 3360 flow. Second operand 6 states and 151 transitions. [2024-06-28 02:22:49,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 250 transitions, 4102 flow [2024-06-28 02:22:49,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 250 transitions, 3975 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:49,278 INFO L231 Difference]: Finished difference. Result has 161 places, 231 transitions, 3416 flow [2024-06-28 02:22:49,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3233, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3416, PETRI_PLACES=161, PETRI_TRANSITIONS=231} [2024-06-28 02:22:49,279 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 120 predicate places. [2024-06-28 02:22:49,279 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 231 transitions, 3416 flow [2024-06-28 02:22:49,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:49,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:49,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:49,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:22:49,279 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:49,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1556773006, now seen corresponding path program 2 times [2024-06-28 02:22:49,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:49,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345994254] [2024-06-28 02:22:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:49,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:49,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:49,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345994254] [2024-06-28 02:22:49,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345994254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:49,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:49,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:49,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610285356] [2024-06-28 02:22:49,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:49,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:49,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:49,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:49,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:49,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:49,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 231 transitions, 3416 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:49,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:49,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:49,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:49,772 INFO L124 PetriNetUnfolderBase]: 1786/2993 cut-off events. [2024-06-28 02:22:49,772 INFO L125 PetriNetUnfolderBase]: For 95134/95134 co-relation queries the response was YES. [2024-06-28 02:22:49,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19909 conditions, 2993 events. 1786/2993 cut-off events. For 95134/95134 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17799 event pairs, 393 based on Foata normal form. 3/2986 useless extension candidates. Maximal degree in co-relation 19831. Up to 2136 conditions per place. [2024-06-28 02:22:49,797 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 131 selfloop transitions, 130 changer transitions 0/268 dead transitions. [2024-06-28 02:22:49,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 268 transitions, 4526 flow [2024-06-28 02:22:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:49,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:22:49,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6321428571428571 [2024-06-28 02:22:49,798 INFO L175 Difference]: Start difference. First operand has 161 places, 231 transitions, 3416 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:22:49,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 268 transitions, 4526 flow [2024-06-28 02:22:49,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 268 transitions, 4366 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:49,990 INFO L231 Difference]: Finished difference. Result has 166 places, 246 transitions, 3783 flow [2024-06-28 02:22:49,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3256, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3783, PETRI_PLACES=166, PETRI_TRANSITIONS=246} [2024-06-28 02:22:49,990 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-28 02:22:49,991 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 246 transitions, 3783 flow [2024-06-28 02:22:49,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:49,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:49,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:49,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:22:49,991 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:49,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:49,991 INFO L85 PathProgramCache]: Analyzing trace with hash 11771232, now seen corresponding path program 3 times [2024-06-28 02:22:49,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:49,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225220200] [2024-06-28 02:22:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:49,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:50,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:50,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225220200] [2024-06-28 02:22:50,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225220200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:50,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:50,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:50,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984691759] [2024-06-28 02:22:50,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:50,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:50,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:50,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:50,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:50,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:50,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 246 transitions, 3783 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:50,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:50,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:50,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:50,467 INFO L124 PetriNetUnfolderBase]: 1781/2990 cut-off events. [2024-06-28 02:22:50,467 INFO L125 PetriNetUnfolderBase]: For 98204/98204 co-relation queries the response was YES. [2024-06-28 02:22:50,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20201 conditions, 2990 events. 1781/2990 cut-off events. For 98204/98204 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17792 event pairs, 393 based on Foata normal form. 3/2983 useless extension candidates. Maximal degree in co-relation 20121. Up to 2134 conditions per place. [2024-06-28 02:22:50,494 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 132 selfloop transitions, 129 changer transitions 0/268 dead transitions. [2024-06-28 02:22:50,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 268 transitions, 4677 flow [2024-06-28 02:22:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:22:50,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-28 02:22:50,496 INFO L175 Difference]: Start difference. First operand has 166 places, 246 transitions, 3783 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:22:50,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 268 transitions, 4677 flow [2024-06-28 02:22:50,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 268 transitions, 4425 flow, removed 52 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:50,708 INFO L231 Difference]: Finished difference. Result has 171 places, 246 transitions, 3798 flow [2024-06-28 02:22:50,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3531, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3798, PETRI_PLACES=171, PETRI_TRANSITIONS=246} [2024-06-28 02:22:50,709 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-28 02:22:50,709 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 246 transitions, 3798 flow [2024-06-28 02:22:50,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:50,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:50,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:50,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:22:50,710 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:50,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:50,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1218339395, now seen corresponding path program 3 times [2024-06-28 02:22:50,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:50,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158731430] [2024-06-28 02:22:50,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:50,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:50,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:50,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158731430] [2024-06-28 02:22:50,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158731430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:50,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:50,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:50,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860196020] [2024-06-28 02:22:50,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:50,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:50,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:50,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:50,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:50,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:50,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 246 transitions, 3798 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:50,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:50,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:50,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:51,178 INFO L124 PetriNetUnfolderBase]: 1767/2963 cut-off events. [2024-06-28 02:22:51,179 INFO L125 PetriNetUnfolderBase]: For 102400/102400 co-relation queries the response was YES. [2024-06-28 02:22:51,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19973 conditions, 2963 events. 1767/2963 cut-off events. For 102400/102400 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17593 event pairs, 393 based on Foata normal form. 2/2958 useless extension candidates. Maximal degree in co-relation 19892. Up to 2390 conditions per place. [2024-06-28 02:22:51,203 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 165 selfloop transitions, 93 changer transitions 0/265 dead transitions. [2024-06-28 02:22:51,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 265 transitions, 4588 flow [2024-06-28 02:22:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:51,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:51,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 02:22:51,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 02:22:51,204 INFO L175 Difference]: Start difference. First operand has 171 places, 246 transitions, 3798 flow. Second operand 6 states and 150 transitions. [2024-06-28 02:22:51,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 265 transitions, 4588 flow [2024-06-28 02:22:51,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 265 transitions, 4307 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:51,400 INFO L231 Difference]: Finished difference. Result has 172 places, 246 transitions, 3710 flow [2024-06-28 02:22:51,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3710, PETRI_PLACES=172, PETRI_TRANSITIONS=246} [2024-06-28 02:22:51,400 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 131 predicate places. [2024-06-28 02:22:51,400 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 246 transitions, 3710 flow [2024-06-28 02:22:51,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:51,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:51,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:51,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:22:51,401 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:51,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:51,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1202487893, now seen corresponding path program 4 times [2024-06-28 02:22:51,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:51,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13843897] [2024-06-28 02:22:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:51,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:51,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13843897] [2024-06-28 02:22:51,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13843897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:51,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:51,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:51,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302349003] [2024-06-28 02:22:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:51,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:51,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:51,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:51,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:51,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 246 transitions, 3710 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:51,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:51,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:51,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:51,862 INFO L124 PetriNetUnfolderBase]: 1751/2949 cut-off events. [2024-06-28 02:22:51,862 INFO L125 PetriNetUnfolderBase]: For 100621/100621 co-relation queries the response was YES. [2024-06-28 02:22:51,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19508 conditions, 2949 events. 1751/2949 cut-off events. For 100621/100621 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 17512 event pairs, 351 based on Foata normal form. 4/2952 useless extension candidates. Maximal degree in co-relation 19426. Up to 2643 conditions per place. [2024-06-28 02:22:51,889 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 217 selfloop transitions, 37 changer transitions 0/261 dead transitions. [2024-06-28 02:22:51,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 261 transitions, 4262 flow [2024-06-28 02:22:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 02:22:51,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5678571428571428 [2024-06-28 02:22:51,890 INFO L175 Difference]: Start difference. First operand has 172 places, 246 transitions, 3710 flow. Second operand 7 states and 159 transitions. [2024-06-28 02:22:51,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 261 transitions, 4262 flow [2024-06-28 02:22:52,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 261 transitions, 3916 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 02:22:52,081 INFO L231 Difference]: Finished difference. Result has 171 places, 246 transitions, 3453 flow [2024-06-28 02:22:52,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3453, PETRI_PLACES=171, PETRI_TRANSITIONS=246} [2024-06-28 02:22:52,081 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-28 02:22:52,082 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 246 transitions, 3453 flow [2024-06-28 02:22:52,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:52,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:52,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:52,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:22:52,082 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:52,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:52,082 INFO L85 PathProgramCache]: Analyzing trace with hash -746037595, now seen corresponding path program 5 times [2024-06-28 02:22:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:52,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050388990] [2024-06-28 02:22:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:52,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:52,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:52,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050388990] [2024-06-28 02:22:52,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050388990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:52,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:52,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:52,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530872896] [2024-06-28 02:22:52,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:52,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:52,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:52,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:52,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 246 transitions, 3453 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:52,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:52,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:52,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:52,546 INFO L124 PetriNetUnfolderBase]: 1743/2939 cut-off events. [2024-06-28 02:22:52,547 INFO L125 PetriNetUnfolderBase]: For 100877/100877 co-relation queries the response was YES. [2024-06-28 02:22:52,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18915 conditions, 2939 events. 1743/2939 cut-off events. For 100877/100877 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 17495 event pairs, 350 based on Foata normal form. 4/2942 useless extension candidates. Maximal degree in co-relation 18834. Up to 2381 conditions per place. [2024-06-28 02:22:52,571 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 168 selfloop transitions, 102 changer transitions 0/277 dead transitions. [2024-06-28 02:22:52,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 277 transitions, 4293 flow [2024-06-28 02:22:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 02:22:52,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6464285714285715 [2024-06-28 02:22:52,572 INFO L175 Difference]: Start difference. First operand has 171 places, 246 transitions, 3453 flow. Second operand 7 states and 181 transitions. [2024-06-28 02:22:52,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 277 transitions, 4293 flow [2024-06-28 02:22:52,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 277 transitions, 4231 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:52,801 INFO L231 Difference]: Finished difference. Result has 173 places, 249 transitions, 3699 flow [2024-06-28 02:22:52,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3699, PETRI_PLACES=173, PETRI_TRANSITIONS=249} [2024-06-28 02:22:52,802 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-06-28 02:22:52,802 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 249 transitions, 3699 flow [2024-06-28 02:22:52,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:52,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:52,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:52,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:22:52,803 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:52,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1429463815, now seen corresponding path program 6 times [2024-06-28 02:22:52,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:52,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274764881] [2024-06-28 02:22:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:52,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:52,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274764881] [2024-06-28 02:22:52,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274764881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:52,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:52,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:52,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508036421] [2024-06-28 02:22:52,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:52,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:52,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:52,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:52,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:52,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:52,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 249 transitions, 3699 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:52,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:52,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:52,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:53,274 INFO L124 PetriNetUnfolderBase]: 1719/2897 cut-off events. [2024-06-28 02:22:53,274 INFO L125 PetriNetUnfolderBase]: For 102814/102817 co-relation queries the response was YES. [2024-06-28 02:22:53,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18893 conditions, 2897 events. 1719/2897 cut-off events. For 102814/102817 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17171 event pairs, 358 based on Foata normal form. 6/2901 useless extension candidates. Maximal degree in co-relation 18811. Up to 2361 conditions per place. [2024-06-28 02:22:53,300 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 170 selfloop transitions, 95 changer transitions 0/272 dead transitions. [2024-06-28 02:22:53,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 272 transitions, 4369 flow [2024-06-28 02:22:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 02:22:53,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6541666666666667 [2024-06-28 02:22:53,301 INFO L175 Difference]: Start difference. First operand has 173 places, 249 transitions, 3699 flow. Second operand 6 states and 157 transitions. [2024-06-28 02:22:53,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 272 transitions, 4369 flow [2024-06-28 02:22:53,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 272 transitions, 4141 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:53,576 INFO L231 Difference]: Finished difference. Result has 173 places, 249 transitions, 3685 flow [2024-06-28 02:22:53,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3475, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3685, PETRI_PLACES=173, PETRI_TRANSITIONS=249} [2024-06-28 02:22:53,576 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-06-28 02:22:53,577 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 249 transitions, 3685 flow [2024-06-28 02:22:53,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:53,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:53,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:53,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:22:53,577 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:53,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:53,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1429467442, now seen corresponding path program 4 times [2024-06-28 02:22:53,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:53,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161763000] [2024-06-28 02:22:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:53,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:53,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:53,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161763000] [2024-06-28 02:22:53,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161763000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:53,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:53,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:53,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931334840] [2024-06-28 02:22:53,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:53,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:53,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:53,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:53,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:53,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:53,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 249 transitions, 3685 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:53,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:53,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:53,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:54,104 INFO L124 PetriNetUnfolderBase]: 1774/2986 cut-off events. [2024-06-28 02:22:54,104 INFO L125 PetriNetUnfolderBase]: For 101625/101628 co-relation queries the response was YES. [2024-06-28 02:22:54,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19490 conditions, 2986 events. 1774/2986 cut-off events. For 101625/101628 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17764 event pairs, 358 based on Foata normal form. 5/2989 useless extension candidates. Maximal degree in co-relation 19409. Up to 2350 conditions per place. [2024-06-28 02:22:54,134 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 173 selfloop transitions, 114 changer transitions 0/294 dead transitions. [2024-06-28 02:22:54,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 294 transitions, 4823 flow [2024-06-28 02:22:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:54,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 02:22:54,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6535714285714286 [2024-06-28 02:22:54,135 INFO L175 Difference]: Start difference. First operand has 173 places, 249 transitions, 3685 flow. Second operand 7 states and 183 transitions. [2024-06-28 02:22:54,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 294 transitions, 4823 flow [2024-06-28 02:22:54,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 294 transitions, 4533 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:54,345 INFO L231 Difference]: Finished difference. Result has 175 places, 264 transitions, 3993 flow [2024-06-28 02:22:54,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3993, PETRI_PLACES=175, PETRI_TRANSITIONS=264} [2024-06-28 02:22:54,346 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-28 02:22:54,346 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 264 transitions, 3993 flow [2024-06-28 02:22:54,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:54,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:54,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:54,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:22:54,347 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:54,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1165302590, now seen corresponding path program 5 times [2024-06-28 02:22:54,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:54,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932170432] [2024-06-28 02:22:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:54,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:54,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:54,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932170432] [2024-06-28 02:22:54,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932170432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:54,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:54,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:54,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327879696] [2024-06-28 02:22:54,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:54,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:54,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:54,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:54,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:54,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:54,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 264 transitions, 3993 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:54,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:54,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:54,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:54,897 INFO L124 PetriNetUnfolderBase]: 1785/3011 cut-off events. [2024-06-28 02:22:54,897 INFO L125 PetriNetUnfolderBase]: For 102254/102257 co-relation queries the response was YES. [2024-06-28 02:22:54,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19967 conditions, 3011 events. 1785/3011 cut-off events. For 102254/102257 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 18038 event pairs, 358 based on Foata normal form. 5/3014 useless extension candidates. Maximal degree in co-relation 19884. Up to 2363 conditions per place. [2024-06-28 02:22:54,928 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 179 selfloop transitions, 108 changer transitions 0/294 dead transitions. [2024-06-28 02:22:54,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 294 transitions, 5000 flow [2024-06-28 02:22:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:22:54,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-28 02:22:54,934 INFO L175 Difference]: Start difference. First operand has 175 places, 264 transitions, 3993 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:22:54,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 294 transitions, 5000 flow [2024-06-28 02:22:55,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 294 transitions, 4929 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:55,164 INFO L231 Difference]: Finished difference. Result has 182 places, 270 transitions, 4277 flow [2024-06-28 02:22:55,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4277, PETRI_PLACES=182, PETRI_TRANSITIONS=270} [2024-06-28 02:22:55,165 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-06-28 02:22:55,165 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 270 transitions, 4277 flow [2024-06-28 02:22:55,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:55,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:55,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:55,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:22:55,166 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:55,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:55,166 INFO L85 PathProgramCache]: Analyzing trace with hash 2083050032, now seen corresponding path program 1 times [2024-06-28 02:22:55,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:55,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566310504] [2024-06-28 02:22:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:55,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:55,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:55,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566310504] [2024-06-28 02:22:55,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566310504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:55,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:55,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:55,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114251382] [2024-06-28 02:22:55,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:55,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:55,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:55,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:55,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:55,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:55,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 270 transitions, 4277 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:55,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:55,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:55,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:55,657 INFO L124 PetriNetUnfolderBase]: 1808/3026 cut-off events. [2024-06-28 02:22:55,658 INFO L125 PetriNetUnfolderBase]: For 112148/112148 co-relation queries the response was YES. [2024-06-28 02:22:55,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20777 conditions, 3026 events. 1808/3026 cut-off events. For 112148/112148 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 17964 event pairs, 415 based on Foata normal form. 3/3022 useless extension candidates. Maximal degree in co-relation 20691. Up to 2186 conditions per place. [2024-06-28 02:22:55,694 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 116 selfloop transitions, 178 changer transitions 0/301 dead transitions. [2024-06-28 02:22:55,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 301 transitions, 5349 flow [2024-06-28 02:22:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 02:22:55,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 02:22:55,696 INFO L175 Difference]: Start difference. First operand has 182 places, 270 transitions, 4277 flow. Second operand 7 states and 175 transitions. [2024-06-28 02:22:55,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 301 transitions, 5349 flow [2024-06-28 02:22:55,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 301 transitions, 5131 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:55,967 INFO L231 Difference]: Finished difference. Result has 186 places, 281 transitions, 4615 flow [2024-06-28 02:22:55,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4065, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4615, PETRI_PLACES=186, PETRI_TRANSITIONS=281} [2024-06-28 02:22:55,968 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-28 02:22:55,968 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 281 transitions, 4615 flow [2024-06-28 02:22:55,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:55,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:55,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:55,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:22:55,969 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:55,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:55,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1883160192, now seen corresponding path program 2 times [2024-06-28 02:22:55,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:55,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846571342] [2024-06-28 02:22:55,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:55,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:56,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:56,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846571342] [2024-06-28 02:22:56,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846571342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:56,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:56,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:56,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369974247] [2024-06-28 02:22:56,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:56,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:56,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:56,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:56,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:56,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:56,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 281 transitions, 4615 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:56,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:56,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:56,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:56,504 INFO L124 PetriNetUnfolderBase]: 1850/3115 cut-off events. [2024-06-28 02:22:56,504 INFO L125 PetriNetUnfolderBase]: For 118289/118289 co-relation queries the response was YES. [2024-06-28 02:22:56,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21918 conditions, 3115 events. 1850/3115 cut-off events. For 118289/118289 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 18699 event pairs, 352 based on Foata normal form. 2/3116 useless extension candidates. Maximal degree in co-relation 21831. Up to 2757 conditions per place. [2024-06-28 02:22:56,539 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 256 selfloop transitions, 50 changer transitions 0/313 dead transitions. [2024-06-28 02:22:56,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 313 transitions, 5761 flow [2024-06-28 02:22:56,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:56,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 02:22:56,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 02:22:56,540 INFO L175 Difference]: Start difference. First operand has 186 places, 281 transitions, 4615 flow. Second operand 8 states and 180 transitions. [2024-06-28 02:22:56,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 313 transitions, 5761 flow [2024-06-28 02:22:56,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 313 transitions, 5526 flow, removed 66 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:56,849 INFO L231 Difference]: Finished difference. Result has 193 places, 295 transitions, 4845 flow [2024-06-28 02:22:56,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4418, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4845, PETRI_PLACES=193, PETRI_TRANSITIONS=295} [2024-06-28 02:22:56,849 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-28 02:22:56,850 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 295 transitions, 4845 flow [2024-06-28 02:22:56,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:56,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:56,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:56,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:22:56,850 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:56,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:56,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1159588112, now seen corresponding path program 3 times [2024-06-28 02:22:56,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:56,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289968079] [2024-06-28 02:22:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:56,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:56,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:56,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289968079] [2024-06-28 02:22:56,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289968079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:56,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:56,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:56,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959602144] [2024-06-28 02:22:56,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:56,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:56,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:56,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:56,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:56,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:56,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 295 transitions, 4845 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:56,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:56,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:56,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:57,382 INFO L124 PetriNetUnfolderBase]: 1857/3136 cut-off events. [2024-06-28 02:22:57,383 INFO L125 PetriNetUnfolderBase]: For 122121/122121 co-relation queries the response was YES. [2024-06-28 02:22:57,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21778 conditions, 3136 events. 1857/3136 cut-off events. For 122121/122121 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 18953 event pairs, 349 based on Foata normal form. 3/3138 useless extension candidates. Maximal degree in co-relation 21688. Up to 2430 conditions per place. [2024-06-28 02:22:57,415 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 177 selfloop transitions, 146 changer transitions 0/330 dead transitions. [2024-06-28 02:22:57,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 330 transitions, 5921 flow [2024-06-28 02:22:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 02:22:57,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-06-28 02:22:57,416 INFO L175 Difference]: Start difference. First operand has 193 places, 295 transitions, 4845 flow. Second operand 8 states and 202 transitions. [2024-06-28 02:22:57,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 330 transitions, 5921 flow [2024-06-28 02:22:57,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 330 transitions, 5857 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:57,718 INFO L231 Difference]: Finished difference. Result has 199 places, 300 transitions, 5186 flow [2024-06-28 02:22:57,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4781, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5186, PETRI_PLACES=199, PETRI_TRANSITIONS=300} [2024-06-28 02:22:57,719 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 158 predicate places. [2024-06-28 02:22:57,719 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 300 transitions, 5186 flow [2024-06-28 02:22:57,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:57,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:57,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:57,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:22:57,719 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:57,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:57,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1114328531, now seen corresponding path program 1 times [2024-06-28 02:22:57,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:57,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098758402] [2024-06-28 02:22:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:57,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:57,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:57,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098758402] [2024-06-28 02:22:57,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098758402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:57,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:57,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:57,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428944760] [2024-06-28 02:22:57,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:57,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:57,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:57,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:57,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:57,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:57,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 300 transitions, 5186 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:57,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:57,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:57,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:58,367 INFO L124 PetriNetUnfolderBase]: 1960/3279 cut-off events. [2024-06-28 02:22:58,367 INFO L125 PetriNetUnfolderBase]: For 149453/149453 co-relation queries the response was YES. [2024-06-28 02:22:58,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23416 conditions, 3279 events. 1960/3279 cut-off events. For 149453/149453 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 19731 event pairs, 305 based on Foata normal form. 12/3281 useless extension candidates. Maximal degree in co-relation 23324. Up to 2400 conditions per place. [2024-06-28 02:22:58,396 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 233 selfloop transitions, 104 changer transitions 0/344 dead transitions. [2024-06-28 02:22:58,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 344 transitions, 6414 flow [2024-06-28 02:22:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:58,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-28 02:22:58,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6678571428571428 [2024-06-28 02:22:58,398 INFO L175 Difference]: Start difference. First operand has 199 places, 300 transitions, 5186 flow. Second operand 7 states and 187 transitions. [2024-06-28 02:22:58,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 344 transitions, 6414 flow [2024-06-28 02:22:58,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 344 transitions, 6260 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:58,727 INFO L231 Difference]: Finished difference. Result has 203 places, 306 transitions, 5348 flow [2024-06-28 02:22:58,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5040, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5348, PETRI_PLACES=203, PETRI_TRANSITIONS=306} [2024-06-28 02:22:58,727 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-28 02:22:58,727 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 306 transitions, 5348 flow [2024-06-28 02:22:58,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:58,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:58,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:58,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:22:58,728 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:58,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:58,728 INFO L85 PathProgramCache]: Analyzing trace with hash 77664987, now seen corresponding path program 2 times [2024-06-28 02:22:58,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:58,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963070725] [2024-06-28 02:22:58,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:58,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:58,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:58,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963070725] [2024-06-28 02:22:58,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963070725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:58,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:58,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:58,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203038020] [2024-06-28 02:22:58,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:58,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:58,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:58,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:58,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:58,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:58,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 306 transitions, 5348 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:58,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:58,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:58,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:59,404 INFO L124 PetriNetUnfolderBase]: 2004/3347 cut-off events. [2024-06-28 02:22:59,404 INFO L125 PetriNetUnfolderBase]: For 151809/151809 co-relation queries the response was YES. [2024-06-28 02:22:59,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24231 conditions, 3347 events. 2004/3347 cut-off events. For 151809/151809 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 20220 event pairs, 421 based on Foata normal form. 12/3349 useless extension candidates. Maximal degree in co-relation 24137. Up to 2714 conditions per place. [2024-06-28 02:22:59,442 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 233 selfloop transitions, 99 changer transitions 0/339 dead transitions. [2024-06-28 02:22:59,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 339 transitions, 6410 flow [2024-06-28 02:22:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:59,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 02:22:59,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-28 02:22:59,442 INFO L175 Difference]: Start difference. First operand has 203 places, 306 transitions, 5348 flow. Second operand 7 states and 180 transitions. [2024-06-28 02:22:59,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 339 transitions, 6410 flow [2024-06-28 02:22:59,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 339 transitions, 6234 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:59,798 INFO L231 Difference]: Finished difference. Result has 207 places, 309 transitions, 5433 flow [2024-06-28 02:22:59,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5180, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5433, PETRI_PLACES=207, PETRI_TRANSITIONS=309} [2024-06-28 02:22:59,798 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-28 02:22:59,799 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 309 transitions, 5433 flow [2024-06-28 02:22:59,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:59,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:59,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:59,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:22:59,799 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:59,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:59,800 INFO L85 PathProgramCache]: Analyzing trace with hash 364552317, now seen corresponding path program 3 times [2024-06-28 02:22:59,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:59,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334272080] [2024-06-28 02:22:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:59,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:59,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:59,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334272080] [2024-06-28 02:22:59,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334272080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:59,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:59,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:59,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966043075] [2024-06-28 02:22:59,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:59,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:59,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:59,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:59,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:59,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:22:59,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 309 transitions, 5433 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:59,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:59,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:22:59,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:00,405 INFO L124 PetriNetUnfolderBase]: 2048/3414 cut-off events. [2024-06-28 02:23:00,405 INFO L125 PetriNetUnfolderBase]: For 157500/157500 co-relation queries the response was YES. [2024-06-28 02:23:00,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24850 conditions, 3414 events. 2048/3414 cut-off events. For 157500/157500 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 20664 event pairs, 426 based on Foata normal form. 12/3416 useless extension candidates. Maximal degree in co-relation 24754. Up to 2782 conditions per place. [2024-06-28 02:23:00,442 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 237 selfloop transitions, 91 changer transitions 0/335 dead transitions. [2024-06-28 02:23:00,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 335 transitions, 6383 flow [2024-06-28 02:23:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:23:00,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178571428571429 [2024-06-28 02:23:00,443 INFO L175 Difference]: Start difference. First operand has 207 places, 309 transitions, 5433 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:23:00,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 335 transitions, 6383 flow [2024-06-28 02:23:00,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 335 transitions, 6170 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:00,908 INFO L231 Difference]: Finished difference. Result has 209 places, 312 transitions, 5463 flow [2024-06-28 02:23:00,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5220, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5463, PETRI_PLACES=209, PETRI_TRANSITIONS=312} [2024-06-28 02:23:00,909 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-28 02:23:00,909 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 312 transitions, 5463 flow [2024-06-28 02:23:00,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:00,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:00,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:00,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:23:00,909 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:00,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:00,910 INFO L85 PathProgramCache]: Analyzing trace with hash 187544115, now seen corresponding path program 1 times [2024-06-28 02:23:00,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:00,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575567964] [2024-06-28 02:23:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:00,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:00,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:00,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575567964] [2024-06-28 02:23:00,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575567964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:00,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:00,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:00,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252579109] [2024-06-28 02:23:00,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:00,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:00,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:00,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:00,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:01,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:01,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 312 transitions, 5463 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:01,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:01,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:01,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:01,472 INFO L124 PetriNetUnfolderBase]: 2074/3457 cut-off events. [2024-06-28 02:23:01,473 INFO L125 PetriNetUnfolderBase]: For 156257/156257 co-relation queries the response was YES. [2024-06-28 02:23:01,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25400 conditions, 3457 events. 2074/3457 cut-off events. For 156257/156257 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 20897 event pairs, 447 based on Foata normal form. 2/3449 useless extension candidates. Maximal degree in co-relation 25303. Up to 2528 conditions per place. [2024-06-28 02:23:01,511 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 147 selfloop transitions, 191 changer transitions 0/345 dead transitions. [2024-06-28 02:23:01,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 345 transitions, 6666 flow [2024-06-28 02:23:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:01,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 02:23:01,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 02:23:01,512 INFO L175 Difference]: Start difference. First operand has 209 places, 312 transitions, 5463 flow. Second operand 7 states and 175 transitions. [2024-06-28 02:23:01,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 345 transitions, 6666 flow [2024-06-28 02:23:01,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 345 transitions, 6463 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:01,896 INFO L231 Difference]: Finished difference. Result has 212 places, 322 transitions, 5886 flow [2024-06-28 02:23:01,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5260, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5886, PETRI_PLACES=212, PETRI_TRANSITIONS=322} [2024-06-28 02:23:01,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-28 02:23:01,897 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 322 transitions, 5886 flow [2024-06-28 02:23:01,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:01,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:01,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:01,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:23:01,897 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:01,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1351171189, now seen corresponding path program 1 times [2024-06-28 02:23:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:01,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873063824] [2024-06-28 02:23:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:01,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:01,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:01,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:01,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873063824] [2024-06-28 02:23:01,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873063824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:01,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:01,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:01,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466616544] [2024-06-28 02:23:01,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:01,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:01,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:01,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:01,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:01,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:01,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 322 transitions, 5886 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:01,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:01,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:01,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:02,511 INFO L124 PetriNetUnfolderBase]: 2084/3473 cut-off events. [2024-06-28 02:23:02,511 INFO L125 PetriNetUnfolderBase]: For 164128/164128 co-relation queries the response was YES. [2024-06-28 02:23:02,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26013 conditions, 3473 events. 2084/3473 cut-off events. For 164128/164128 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 21054 event pairs, 421 based on Foata normal form. 2/3465 useless extension candidates. Maximal degree in co-relation 25914. Up to 2872 conditions per place. [2024-06-28 02:23:02,550 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 246 selfloop transitions, 95 changer transitions 0/348 dead transitions. [2024-06-28 02:23:02,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 348 transitions, 6882 flow [2024-06-28 02:23:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 02:23:02,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6107142857142858 [2024-06-28 02:23:02,556 INFO L175 Difference]: Start difference. First operand has 212 places, 322 transitions, 5886 flow. Second operand 7 states and 171 transitions. [2024-06-28 02:23:02,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 348 transitions, 6882 flow [2024-06-28 02:23:03,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 348 transitions, 6625 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:03,033 INFO L231 Difference]: Finished difference. Result has 216 places, 326 transitions, 5900 flow [2024-06-28 02:23:03,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5633, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5900, PETRI_PLACES=216, PETRI_TRANSITIONS=326} [2024-06-28 02:23:03,034 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 175 predicate places. [2024-06-28 02:23:03,034 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 326 transitions, 5900 flow [2024-06-28 02:23:03,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:03,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:03,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:03,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:23:03,035 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:03,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:03,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1015673483, now seen corresponding path program 2 times [2024-06-28 02:23:03,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:03,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590440104] [2024-06-28 02:23:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:03,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:03,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590440104] [2024-06-28 02:23:03,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590440104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:03,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:03,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:03,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367808983] [2024-06-28 02:23:03,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:03,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:03,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:03,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:03,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:03,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:03,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 326 transitions, 5900 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:03,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:03,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:03,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:03,599 INFO L124 PetriNetUnfolderBase]: 2094/3486 cut-off events. [2024-06-28 02:23:03,600 INFO L125 PetriNetUnfolderBase]: For 169674/169674 co-relation queries the response was YES. [2024-06-28 02:23:03,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25986 conditions, 3486 events. 2094/3486 cut-off events. For 169674/169674 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 21094 event pairs, 447 based on Foata normal form. 2/3478 useless extension candidates. Maximal degree in co-relation 25886. Up to 2540 conditions per place. [2024-06-28 02:23:03,641 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 158 selfloop transitions, 185 changer transitions 0/350 dead transitions. [2024-06-28 02:23:03,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 350 transitions, 6996 flow [2024-06-28 02:23:03,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:23:03,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2024-06-28 02:23:03,642 INFO L175 Difference]: Start difference. First operand has 216 places, 326 transitions, 5900 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:23:03,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 350 transitions, 6996 flow [2024-06-28 02:23:04,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 350 transitions, 6784 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:04,177 INFO L231 Difference]: Finished difference. Result has 218 places, 330 transitions, 6144 flow [2024-06-28 02:23:04,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5688, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6144, PETRI_PLACES=218, PETRI_TRANSITIONS=330} [2024-06-28 02:23:04,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-28 02:23:04,178 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 330 transitions, 6144 flow [2024-06-28 02:23:04,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:04,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:04,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:04,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:23:04,178 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:04,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:04,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1104077513, now seen corresponding path program 3 times [2024-06-28 02:23:04,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:04,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957344932] [2024-06-28 02:23:04,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:04,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:04,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:04,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:04,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957344932] [2024-06-28 02:23:04,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957344932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:04,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:04,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:04,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870862218] [2024-06-28 02:23:04,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:04,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:04,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:04,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:04,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:04,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:04,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 330 transitions, 6144 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:04,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:04,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:04,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:04,748 INFO L124 PetriNetUnfolderBase]: 2088/3478 cut-off events. [2024-06-28 02:23:04,749 INFO L125 PetriNetUnfolderBase]: For 175048/175048 co-relation queries the response was YES. [2024-06-28 02:23:04,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26258 conditions, 3478 events. 2088/3478 cut-off events. For 175048/175048 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 21079 event pairs, 446 based on Foata normal form. 2/3470 useless extension candidates. Maximal degree in co-relation 26157. Up to 2537 conditions per place. [2024-06-28 02:23:04,787 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 158 selfloop transitions, 185 changer transitions 0/350 dead transitions. [2024-06-28 02:23:04,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 350 transitions, 7172 flow [2024-06-28 02:23:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:04,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:23:04,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2024-06-28 02:23:04,788 INFO L175 Difference]: Start difference. First operand has 218 places, 330 transitions, 6144 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:23:04,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 350 transitions, 7172 flow [2024-06-28 02:23:05,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 350 transitions, 6817 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:05,304 INFO L231 Difference]: Finished difference. Result has 221 places, 330 transitions, 6166 flow [2024-06-28 02:23:05,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5789, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6166, PETRI_PLACES=221, PETRI_TRANSITIONS=330} [2024-06-28 02:23:05,304 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-28 02:23:05,304 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 330 transitions, 6166 flow [2024-06-28 02:23:05,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:05,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:05,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:05,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:23:05,305 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:05,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1088011421, now seen corresponding path program 2 times [2024-06-28 02:23:05,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:05,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308743891] [2024-06-28 02:23:05,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:05,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:05,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:05,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308743891] [2024-06-28 02:23:05,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308743891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:05,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:05,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:05,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034635496] [2024-06-28 02:23:05,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:05,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:05,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:05,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:05,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:05,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:05,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 330 transitions, 6166 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:05,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:05,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:05,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:05,985 INFO L124 PetriNetUnfolderBase]: 2098/3502 cut-off events. [2024-06-28 02:23:05,985 INFO L125 PetriNetUnfolderBase]: For 181190/181190 co-relation queries the response was YES. [2024-06-28 02:23:06,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26515 conditions, 3502 events. 2098/3502 cut-off events. For 181190/181190 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 21255 event pairs, 420 based on Foata normal form. 2/3494 useless extension candidates. Maximal degree in co-relation 26413. Up to 2888 conditions per place. [2024-06-28 02:23:06,033 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 254 selfloop transitions, 96 changer transitions 0/357 dead transitions. [2024-06-28 02:23:06,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 357 transitions, 7320 flow [2024-06-28 02:23:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:23:06,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.590625 [2024-06-28 02:23:06,034 INFO L175 Difference]: Start difference. First operand has 221 places, 330 transitions, 6166 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:23:06,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 357 transitions, 7320 flow [2024-06-28 02:23:06,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 357 transitions, 6964 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:06,614 INFO L231 Difference]: Finished difference. Result has 225 places, 336 transitions, 6115 flow [2024-06-28 02:23:06,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5816, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6115, PETRI_PLACES=225, PETRI_TRANSITIONS=336} [2024-06-28 02:23:06,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-28 02:23:06,615 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 336 transitions, 6115 flow [2024-06-28 02:23:06,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:06,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:06,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:06,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:23:06,616 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:06,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:06,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1388352423, now seen corresponding path program 1 times [2024-06-28 02:23:06,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:06,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291060614] [2024-06-28 02:23:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:06,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:06,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:06,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291060614] [2024-06-28 02:23:06,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291060614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:06,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:06,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:06,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025913304] [2024-06-28 02:23:06,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:06,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:06,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:06,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:06,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:06,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:06,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 336 transitions, 6115 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:06,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:06,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:06,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:07,230 INFO L124 PetriNetUnfolderBase]: 2106/3523 cut-off events. [2024-06-28 02:23:07,230 INFO L125 PetriNetUnfolderBase]: For 184002/184002 co-relation queries the response was YES. [2024-06-28 02:23:07,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26435 conditions, 3523 events. 2106/3523 cut-off events. For 184002/184002 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 21496 event pairs, 389 based on Foata normal form. 2/3524 useless extension candidates. Maximal degree in co-relation 26332. Up to 3176 conditions per place. [2024-06-28 02:23:07,271 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 322 selfloop transitions, 27 changer transitions 0/356 dead transitions. [2024-06-28 02:23:07,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 356 transitions, 6905 flow [2024-06-28 02:23:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 02:23:07,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607142857142857 [2024-06-28 02:23:07,272 INFO L175 Difference]: Start difference. First operand has 225 places, 336 transitions, 6115 flow. Second operand 7 states and 157 transitions. [2024-06-28 02:23:07,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 356 transitions, 6905 flow [2024-06-28 02:23:07,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 356 transitions, 6726 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:07,681 INFO L231 Difference]: Finished difference. Result has 228 places, 338 transitions, 6047 flow [2024-06-28 02:23:07,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5936, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6047, PETRI_PLACES=228, PETRI_TRANSITIONS=338} [2024-06-28 02:23:07,681 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 187 predicate places. [2024-06-28 02:23:07,681 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 338 transitions, 6047 flow [2024-06-28 02:23:07,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:07,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:07,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:07,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:23:07,682 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:07,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:07,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1764997797, now seen corresponding path program 4 times [2024-06-28 02:23:07,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:07,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060607426] [2024-06-28 02:23:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:07,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:07,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:07,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060607426] [2024-06-28 02:23:07,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060607426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:07,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:07,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:07,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540289553] [2024-06-28 02:23:07,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:07,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:07,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:07,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:07,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 338 transitions, 6047 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:07,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:07,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:07,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:08,398 INFO L124 PetriNetUnfolderBase]: 2256/3770 cut-off events. [2024-06-28 02:23:08,398 INFO L125 PetriNetUnfolderBase]: For 258385/258388 co-relation queries the response was YES. [2024-06-28 02:23:08,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27207 conditions, 3770 events. 2256/3770 cut-off events. For 258385/258388 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 23127 event pairs, 331 based on Foata normal form. 56/3824 useless extension candidates. Maximal degree in co-relation 27102. Up to 2792 conditions per place. [2024-06-28 02:23:08,437 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 262 selfloop transitions, 107 changer transitions 1/377 dead transitions. [2024-06-28 02:23:08,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 377 transitions, 7055 flow [2024-06-28 02:23:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-28 02:23:08,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-28 02:23:08,438 INFO L175 Difference]: Start difference. First operand has 228 places, 338 transitions, 6047 flow. Second operand 7 states and 189 transitions. [2024-06-28 02:23:08,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 377 transitions, 7055 flow [2024-06-28 02:23:08,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 377 transitions, 6960 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:08,930 INFO L231 Difference]: Finished difference. Result has 230 places, 340 transitions, 6221 flow [2024-06-28 02:23:08,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5952, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6221, PETRI_PLACES=230, PETRI_TRANSITIONS=340} [2024-06-28 02:23:08,931 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-28 02:23:08,931 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 340 transitions, 6221 flow [2024-06-28 02:23:08,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:08,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:08,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:08,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:23:08,931 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:08,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:08,931 INFO L85 PathProgramCache]: Analyzing trace with hash 150028661, now seen corresponding path program 3 times [2024-06-28 02:23:08,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:08,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645219924] [2024-06-28 02:23:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:08,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:09,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:09,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645219924] [2024-06-28 02:23:09,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645219924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:09,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:09,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:09,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111931452] [2024-06-28 02:23:09,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:09,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:09,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:09,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:09,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 340 transitions, 6221 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:09,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:09,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:09,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:09,565 INFO L124 PetriNetUnfolderBase]: 2243/3732 cut-off events. [2024-06-28 02:23:09,565 INFO L125 PetriNetUnfolderBase]: For 195747/195747 co-relation queries the response was YES. [2024-06-28 02:23:09,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27668 conditions, 3732 events. 2243/3732 cut-off events. For 195747/195747 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 22815 event pairs, 473 based on Foata normal form. 1/3726 useless extension candidates. Maximal degree in co-relation 27562. Up to 3130 conditions per place. [2024-06-28 02:23:09,605 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 245 selfloop transitions, 107 changer transitions 0/359 dead transitions. [2024-06-28 02:23:09,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 359 transitions, 7183 flow [2024-06-28 02:23:09,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:23:09,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-06-28 02:23:09,606 INFO L175 Difference]: Start difference. First operand has 230 places, 340 transitions, 6221 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:23:09,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 359 transitions, 7183 flow [2024-06-28 02:23:10,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 359 transitions, 6939 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:10,198 INFO L231 Difference]: Finished difference. Result has 232 places, 340 transitions, 6197 flow [2024-06-28 02:23:10,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5977, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6197, PETRI_PLACES=232, PETRI_TRANSITIONS=340} [2024-06-28 02:23:10,199 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-28 02:23:10,199 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 340 transitions, 6197 flow [2024-06-28 02:23:10,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:10,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:10,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:10,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:23:10,199 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:10,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:10,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1387757191, now seen corresponding path program 4 times [2024-06-28 02:23:10,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:10,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374667443] [2024-06-28 02:23:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:10,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:10,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:10,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374667443] [2024-06-28 02:23:10,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374667443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:10,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:10,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:10,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797206015] [2024-06-28 02:23:10,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:10,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:10,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:10,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:10,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:10,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:10,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 340 transitions, 6197 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:10,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:10,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:10,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:10,850 INFO L124 PetriNetUnfolderBase]: 2240/3734 cut-off events. [2024-06-28 02:23:10,851 INFO L125 PetriNetUnfolderBase]: For 198756/198756 co-relation queries the response was YES. [2024-06-28 02:23:10,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27461 conditions, 3734 events. 2240/3734 cut-off events. For 198756/198756 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 22932 event pairs, 474 based on Foata normal form. 1/3728 useless extension candidates. Maximal degree in co-relation 27354. Up to 3128 conditions per place. [2024-06-28 02:23:10,889 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 248 selfloop transitions, 103 changer transitions 0/358 dead transitions. [2024-06-28 02:23:10,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 358 transitions, 7051 flow [2024-06-28 02:23:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 02:23:10,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-06-28 02:23:10,891 INFO L175 Difference]: Start difference. First operand has 232 places, 340 transitions, 6197 flow. Second operand 7 states and 166 transitions. [2024-06-28 02:23:10,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 358 transitions, 7051 flow [2024-06-28 02:23:11,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 358 transitions, 6791 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:11,382 INFO L231 Difference]: Finished difference. Result has 234 places, 340 transitions, 6151 flow [2024-06-28 02:23:11,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5939, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6151, PETRI_PLACES=234, PETRI_TRANSITIONS=340} [2024-06-28 02:23:11,382 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-06-28 02:23:11,383 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 340 transitions, 6151 flow [2024-06-28 02:23:11,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:11,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:11,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:11,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:23:11,383 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:11,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:11,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1397063297, now seen corresponding path program 4 times [2024-06-28 02:23:11,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:11,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281886594] [2024-06-28 02:23:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:11,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:11,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:11,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281886594] [2024-06-28 02:23:11,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281886594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:11,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:11,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:11,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807233018] [2024-06-28 02:23:11,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:11,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:11,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:11,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:11,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:11,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:11,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 340 transitions, 6151 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:11,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:11,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:11,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:11,999 INFO L124 PetriNetUnfolderBase]: 2230/3708 cut-off events. [2024-06-28 02:23:11,999 INFO L125 PetriNetUnfolderBase]: For 197393/197393 co-relation queries the response was YES. [2024-06-28 02:23:12,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27135 conditions, 3708 events. 2230/3708 cut-off events. For 197393/197393 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 22663 event pairs, 499 based on Foata normal form. 2/3703 useless extension candidates. Maximal degree in co-relation 27027. Up to 2777 conditions per place. [2024-06-28 02:23:12,040 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 145 selfloop transitions, 208 changer transitions 0/360 dead transitions. [2024-06-28 02:23:12,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 360 transitions, 7229 flow [2024-06-28 02:23:12,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:12,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:23:12,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-06-28 02:23:12,041 INFO L175 Difference]: Start difference. First operand has 234 places, 340 transitions, 6151 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:23:12,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 360 transitions, 7229 flow [2024-06-28 02:23:12,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 360 transitions, 7009 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:12,618 INFO L231 Difference]: Finished difference. Result has 237 places, 340 transitions, 6354 flow [2024-06-28 02:23:12,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5931, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6354, PETRI_PLACES=237, PETRI_TRANSITIONS=340} [2024-06-28 02:23:12,619 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-28 02:23:12,619 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 340 transitions, 6354 flow [2024-06-28 02:23:12,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:12,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:12,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:12,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:23:12,620 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:12,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1407240287, now seen corresponding path program 5 times [2024-06-28 02:23:12,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:12,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498311771] [2024-06-28 02:23:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:12,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:12,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:12,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498311771] [2024-06-28 02:23:12,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498311771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:12,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:12,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:12,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503777159] [2024-06-28 02:23:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:12,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:12,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:12,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:12,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:12,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:12,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 340 transitions, 6354 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:12,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:12,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:12,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:13,329 INFO L124 PetriNetUnfolderBase]: 2224/3721 cut-off events. [2024-06-28 02:23:13,330 INFO L125 PetriNetUnfolderBase]: For 197702/197702 co-relation queries the response was YES. [2024-06-28 02:23:13,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27386 conditions, 3721 events. 2224/3721 cut-off events. For 197702/197702 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 22864 event pairs, 431 based on Foata normal form. 2/3722 useless extension candidates. Maximal degree in co-relation 27277. Up to 3347 conditions per place. [2024-06-28 02:23:13,374 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 301 selfloop transitions, 50 changer transitions 0/358 dead transitions. [2024-06-28 02:23:13,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 358 transitions, 7327 flow [2024-06-28 02:23:13,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 02:23:13,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 02:23:13,376 INFO L175 Difference]: Start difference. First operand has 237 places, 340 transitions, 6354 flow. Second operand 8 states and 180 transitions. [2024-06-28 02:23:13,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 358 transitions, 7327 flow [2024-06-28 02:23:13,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 358 transitions, 6387 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 02:23:13,909 INFO L231 Difference]: Finished difference. Result has 232 places, 340 transitions, 5521 flow [2024-06-28 02:23:13,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5414, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5521, PETRI_PLACES=232, PETRI_TRANSITIONS=340} [2024-06-28 02:23:13,910 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-28 02:23:13,910 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 340 transitions, 5521 flow [2024-06-28 02:23:13,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:13,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:13,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:13,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:23:13,910 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:13,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:13,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1764874479, now seen corresponding path program 6 times [2024-06-28 02:23:13,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:13,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901742119] [2024-06-28 02:23:13,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:13,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:13,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:13,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901742119] [2024-06-28 02:23:13,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901742119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:13,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:13,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:13,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618837558] [2024-06-28 02:23:13,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:13,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:13,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:13,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:13,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:14,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:14,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 340 transitions, 5521 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:14,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:14,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:14,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:14,550 INFO L124 PetriNetUnfolderBase]: 2234/3740 cut-off events. [2024-06-28 02:23:14,551 INFO L125 PetriNetUnfolderBase]: For 196881/196884 co-relation queries the response was YES. [2024-06-28 02:23:14,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26595 conditions, 3740 events. 2234/3740 cut-off events. For 196881/196884 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 22995 event pairs, 438 based on Foata normal form. 4/3742 useless extension candidates. Maximal degree in co-relation 26487. Up to 3010 conditions per place. [2024-06-28 02:23:14,595 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 228 selfloop transitions, 135 changer transitions 0/370 dead transitions. [2024-06-28 02:23:14,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 370 transitions, 6722 flow [2024-06-28 02:23:14,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:14,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:23:14,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-06-28 02:23:14,597 INFO L175 Difference]: Start difference. First operand has 232 places, 340 transitions, 5521 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:23:14,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 370 transitions, 6722 flow [2024-06-28 02:23:15,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 370 transitions, 6598 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:15,205 INFO L231 Difference]: Finished difference. Result has 233 places, 344 transitions, 5749 flow [2024-06-28 02:23:15,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5397, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5749, PETRI_PLACES=233, PETRI_TRANSITIONS=344} [2024-06-28 02:23:15,206 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-28 02:23:15,206 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 344 transitions, 5749 flow [2024-06-28 02:23:15,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:15,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:15,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:15,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:23:15,207 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:15,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:15,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1652327999, now seen corresponding path program 7 times [2024-06-28 02:23:15,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:15,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469890027] [2024-06-28 02:23:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:15,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:15,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:15,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469890027] [2024-06-28 02:23:15,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469890027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:15,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:15,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:15,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485622935] [2024-06-28 02:23:15,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:15,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:15,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:15,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:15,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:15,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:15,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 344 transitions, 5749 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:15,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:15,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:15,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:15,906 INFO L124 PetriNetUnfolderBase]: 2226/3725 cut-off events. [2024-06-28 02:23:15,906 INFO L125 PetriNetUnfolderBase]: For 200941/200941 co-relation queries the response was YES. [2024-06-28 02:23:15,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26801 conditions, 3725 events. 2226/3725 cut-off events. For 200941/200941 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 22894 event pairs, 430 based on Foata normal form. 2/3726 useless extension candidates. Maximal degree in co-relation 26692. Up to 3004 conditions per place. [2024-06-28 02:23:15,943 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 220 selfloop transitions, 147 changer transitions 0/374 dead transitions. [2024-06-28 02:23:15,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 374 transitions, 6899 flow [2024-06-28 02:23:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:23:15,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.628125 [2024-06-28 02:23:15,944 INFO L175 Difference]: Start difference. First operand has 233 places, 344 transitions, 5749 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:23:15,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 374 transitions, 6899 flow [2024-06-28 02:23:16,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 374 transitions, 6653 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:16,483 INFO L231 Difference]: Finished difference. Result has 236 places, 344 transitions, 5809 flow [2024-06-28 02:23:16,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5503, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5809, PETRI_PLACES=236, PETRI_TRANSITIONS=344} [2024-06-28 02:23:16,484 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-28 02:23:16,484 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 344 transitions, 5809 flow [2024-06-28 02:23:16,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:16,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:16,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:16,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:23:16,484 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:16,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1764867969, now seen corresponding path program 8 times [2024-06-28 02:23:16,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:16,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952827378] [2024-06-28 02:23:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:16,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:16,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:16,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952827378] [2024-06-28 02:23:16,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952827378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:16,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:16,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:16,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140691865] [2024-06-28 02:23:16,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:16,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:16,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:16,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:16,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:16,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:16,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 344 transitions, 5809 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:16,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:16,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:16,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:17,137 INFO L124 PetriNetUnfolderBase]: 2218/3716 cut-off events. [2024-06-28 02:23:17,137 INFO L125 PetriNetUnfolderBase]: For 204841/204844 co-relation queries the response was YES. [2024-06-28 02:23:17,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26756 conditions, 3716 events. 2218/3716 cut-off events. For 204841/204844 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 22881 event pairs, 438 based on Foata normal form. 4/3718 useless extension candidates. Maximal degree in co-relation 26646. Up to 2999 conditions per place. [2024-06-28 02:23:17,179 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 230 selfloop transitions, 129 changer transitions 0/366 dead transitions. [2024-06-28 02:23:17,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 366 transitions, 6813 flow [2024-06-28 02:23:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:17,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:23:17,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2024-06-28 02:23:17,180 INFO L175 Difference]: Start difference. First operand has 236 places, 344 transitions, 5809 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:23:17,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 366 transitions, 6813 flow [2024-06-28 02:23:17,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 366 transitions, 6330 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:17,691 INFO L231 Difference]: Finished difference. Result has 234 places, 344 transitions, 5597 flow [2024-06-28 02:23:17,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5330, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5597, PETRI_PLACES=234, PETRI_TRANSITIONS=344} [2024-06-28 02:23:17,692 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-06-28 02:23:17,692 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 344 transitions, 5597 flow [2024-06-28 02:23:17,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:17,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:17,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:17,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:23:17,692 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:17,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:17,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1365131091, now seen corresponding path program 2 times [2024-06-28 02:23:17,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:17,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432221618] [2024-06-28 02:23:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:17,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:17,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:17,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432221618] [2024-06-28 02:23:17,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432221618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:17,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:17,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:17,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160315303] [2024-06-28 02:23:17,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:17,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:17,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:17,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:17,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 344 transitions, 5597 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:17,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:17,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:17,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:18,317 INFO L124 PetriNetUnfolderBase]: 2226/3725 cut-off events. [2024-06-28 02:23:18,317 INFO L125 PetriNetUnfolderBase]: For 203575/203575 co-relation queries the response was YES. [2024-06-28 02:23:18,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26602 conditions, 3725 events. 2226/3725 cut-off events. For 203575/203575 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 22853 event pairs, 432 based on Foata normal form. 2/3726 useless extension candidates. Maximal degree in co-relation 26493. Up to 3391 conditions per place. [2024-06-28 02:23:18,357 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 336 selfloop transitions, 19 changer transitions 0/362 dead transitions. [2024-06-28 02:23:18,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 362 transitions, 6399 flow [2024-06-28 02:23:18,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:23:18,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:23:18,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 02:23:18,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.605 [2024-06-28 02:23:18,358 INFO L175 Difference]: Start difference. First operand has 234 places, 344 transitions, 5597 flow. Second operand 5 states and 121 transitions. [2024-06-28 02:23:18,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 362 transitions, 6399 flow [2024-06-28 02:23:18,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 362 transitions, 6087 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:18,881 INFO L231 Difference]: Finished difference. Result has 232 places, 346 transitions, 5384 flow [2024-06-28 02:23:18,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5287, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5384, PETRI_PLACES=232, PETRI_TRANSITIONS=346} [2024-06-28 02:23:18,882 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-28 02:23:18,882 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 346 transitions, 5384 flow [2024-06-28 02:23:18,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:18,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:18,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:18,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:23:18,882 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:18,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:18,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1350846291, now seen corresponding path program 3 times [2024-06-28 02:23:18,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:18,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440814806] [2024-06-28 02:23:18,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:18,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:18,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:18,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440814806] [2024-06-28 02:23:18,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440814806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:18,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:18,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:18,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196344568] [2024-06-28 02:23:18,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:18,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:18,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:18,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:18,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 346 transitions, 5384 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:18,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:18,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:18,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:19,511 INFO L124 PetriNetUnfolderBase]: 2234/3737 cut-off events. [2024-06-28 02:23:19,512 INFO L125 PetriNetUnfolderBase]: For 201802/201802 co-relation queries the response was YES. [2024-06-28 02:23:19,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26283 conditions, 3737 events. 2234/3737 cut-off events. For 201802/201802 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 22920 event pairs, 430 based on Foata normal form. 2/3738 useless extension candidates. Maximal degree in co-relation 26173. Up to 3389 conditions per place. [2024-06-28 02:23:19,556 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 336 selfloop transitions, 23 changer transitions 0/366 dead transitions. [2024-06-28 02:23:19,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 366 transitions, 6200 flow [2024-06-28 02:23:19,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:23:19,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:23:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 02:23:19,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 02:23:19,557 INFO L175 Difference]: Start difference. First operand has 232 places, 346 transitions, 5384 flow. Second operand 6 states and 140 transitions. [2024-06-28 02:23:19,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 366 transitions, 6200 flow [2024-06-28 02:23:20,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 366 transitions, 6115 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:20,093 INFO L231 Difference]: Finished difference. Result has 235 places, 348 transitions, 5408 flow [2024-06-28 02:23:20,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5299, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5408, PETRI_PLACES=235, PETRI_TRANSITIONS=348} [2024-06-28 02:23:20,094 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-28 02:23:20,094 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 348 transitions, 5408 flow [2024-06-28 02:23:20,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:20,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:20,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:20,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:23:20,094 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:20,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:20,094 INFO L85 PathProgramCache]: Analyzing trace with hash 809616605, now seen corresponding path program 4 times [2024-06-28 02:23:20,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:20,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62952663] [2024-06-28 02:23:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:20,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:20,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:20,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62952663] [2024-06-28 02:23:20,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62952663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:20,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:20,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:20,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649851607] [2024-06-28 02:23:20,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:20,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:20,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:20,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:20,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 348 transitions, 5408 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:20,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:20,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:20,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:20,728 INFO L124 PetriNetUnfolderBase]: 2229/3732 cut-off events. [2024-06-28 02:23:20,728 INFO L125 PetriNetUnfolderBase]: For 204384/204384 co-relation queries the response was YES. [2024-06-28 02:23:20,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26177 conditions, 3732 events. 2229/3732 cut-off events. For 204384/204384 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 22903 event pairs, 431 based on Foata normal form. 2/3733 useless extension candidates. Maximal degree in co-relation 26066. Up to 3393 conditions per place. [2024-06-28 02:23:20,769 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 338 selfloop transitions, 22 changer transitions 0/367 dead transitions. [2024-06-28 02:23:20,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 367 transitions, 6228 flow [2024-06-28 02:23:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:23:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:23:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 02:23:20,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2024-06-28 02:23:20,770 INFO L175 Difference]: Start difference. First operand has 235 places, 348 transitions, 5408 flow. Second operand 6 states and 139 transitions. [2024-06-28 02:23:20,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 367 transitions, 6228 flow [2024-06-28 02:23:21,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 367 transitions, 6135 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:21,330 INFO L231 Difference]: Finished difference. Result has 237 places, 350 transitions, 5426 flow [2024-06-28 02:23:21,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5315, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5426, PETRI_PLACES=237, PETRI_TRANSITIONS=350} [2024-06-28 02:23:21,331 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-28 02:23:21,331 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 350 transitions, 5426 flow [2024-06-28 02:23:21,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:21,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:21,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:21,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:23:21,331 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:21,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:21,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1151396203, now seen corresponding path program 1 times [2024-06-28 02:23:21,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:21,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855842926] [2024-06-28 02:23:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:21,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:21,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:21,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855842926] [2024-06-28 02:23:21,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855842926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:21,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:21,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:21,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368637807] [2024-06-28 02:23:21,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:21,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:21,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:21,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:21,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:21,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:21,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 350 transitions, 5426 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:21,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:21,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:21,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:22,002 INFO L124 PetriNetUnfolderBase]: 2332/3875 cut-off events. [2024-06-28 02:23:22,002 INFO L125 PetriNetUnfolderBase]: For 250061/250061 co-relation queries the response was YES. [2024-06-28 02:23:22,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27523 conditions, 3875 events. 2332/3875 cut-off events. For 250061/250061 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 23815 event pairs, 411 based on Foata normal form. 12/3880 useless extension candidates. Maximal degree in co-relation 27411. Up to 2990 conditions per place. [2024-06-28 02:23:22,048 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 264 selfloop transitions, 115 changer transitions 0/386 dead transitions. [2024-06-28 02:23:22,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 386 transitions, 6618 flow [2024-06-28 02:23:22,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 02:23:22,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2024-06-28 02:23:22,049 INFO L175 Difference]: Start difference. First operand has 237 places, 350 transitions, 5426 flow. Second operand 7 states and 179 transitions. [2024-06-28 02:23:22,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 386 transitions, 6618 flow [2024-06-28 02:23:22,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 386 transitions, 6523 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:22,691 INFO L231 Difference]: Finished difference. Result has 240 places, 356 transitions, 5673 flow [2024-06-28 02:23:22,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5331, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5673, PETRI_PLACES=240, PETRI_TRANSITIONS=356} [2024-06-28 02:23:22,692 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-06-28 02:23:22,692 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 356 transitions, 5673 flow [2024-06-28 02:23:22,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:22,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:22,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:22,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:23:22,692 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:22,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:22,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1636281059, now seen corresponding path program 2 times [2024-06-28 02:23:22,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:22,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561160771] [2024-06-28 02:23:22,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:22,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:22,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:22,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561160771] [2024-06-28 02:23:22,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561160771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:22,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:22,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:22,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297370291] [2024-06-28 02:23:22,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:22,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:22,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:22,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:22,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:22,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:22,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 356 transitions, 5673 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:22,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:22,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:22,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:23,377 INFO L124 PetriNetUnfolderBase]: 2376/3945 cut-off events. [2024-06-28 02:23:23,377 INFO L125 PetriNetUnfolderBase]: For 259716/259716 co-relation queries the response was YES. [2024-06-28 02:23:23,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28458 conditions, 3945 events. 2376/3945 cut-off events. For 259716/259716 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 24266 event pairs, 501 based on Foata normal form. 12/3950 useless extension candidates. Maximal degree in co-relation 28345. Up to 3296 conditions per place. [2024-06-28 02:23:23,422 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 264 selfloop transitions, 110 changer transitions 0/381 dead transitions. [2024-06-28 02:23:23,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 381 transitions, 6663 flow [2024-06-28 02:23:23,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:23:23,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-06-28 02:23:23,423 INFO L175 Difference]: Start difference. First operand has 240 places, 356 transitions, 5673 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:23:23,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 381 transitions, 6663 flow [2024-06-28 02:23:23,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 381 transitions, 6447 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:23,974 INFO L231 Difference]: Finished difference. Result has 244 places, 359 transitions, 5746 flow [2024-06-28 02:23:23,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5471, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5746, PETRI_PLACES=244, PETRI_TRANSITIONS=359} [2024-06-28 02:23:23,974 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-06-28 02:23:23,975 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 359 transitions, 5746 flow [2024-06-28 02:23:23,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:23,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:23,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:23,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:23:23,975 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:23,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:23,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1751572229, now seen corresponding path program 3 times [2024-06-28 02:23:23,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:23,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268971499] [2024-06-28 02:23:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:23,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:24,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:24,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268971499] [2024-06-28 02:23:24,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268971499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:24,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:24,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:24,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904414045] [2024-06-28 02:23:24,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:24,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:24,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:24,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:24,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 359 transitions, 5746 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:24,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:24,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:24,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:24,727 INFO L124 PetriNetUnfolderBase]: 2448/4077 cut-off events. [2024-06-28 02:23:24,728 INFO L125 PetriNetUnfolderBase]: For 281524/281524 co-relation queries the response was YES. [2024-06-28 02:23:24,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29396 conditions, 4077 events. 2448/4077 cut-off events. For 281524/281524 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 25337 event pairs, 468 based on Foata normal form. 20/4096 useless extension candidates. Maximal degree in co-relation 29281. Up to 3637 conditions per place. [2024-06-28 02:23:24,774 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 335 selfloop transitions, 42 changer transitions 0/384 dead transitions. [2024-06-28 02:23:24,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 384 transitions, 6668 flow [2024-06-28 02:23:24,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:24,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 02:23:24,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565625 [2024-06-28 02:23:24,775 INFO L175 Difference]: Start difference. First operand has 244 places, 359 transitions, 5746 flow. Second operand 8 states and 181 transitions. [2024-06-28 02:23:24,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 384 transitions, 6668 flow [2024-06-28 02:23:25,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 384 transitions, 6423 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:25,374 INFO L231 Difference]: Finished difference. Result has 247 places, 364 transitions, 5701 flow [2024-06-28 02:23:25,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5503, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5701, PETRI_PLACES=247, PETRI_TRANSITIONS=364} [2024-06-28 02:23:25,374 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-06-28 02:23:25,374 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 364 transitions, 5701 flow [2024-06-28 02:23:25,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:25,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:25,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:25,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:23:25,375 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:25,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:25,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1033063375, now seen corresponding path program 1 times [2024-06-28 02:23:25,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:25,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170799099] [2024-06-28 02:23:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:25,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:25,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:25,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170799099] [2024-06-28 02:23:25,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170799099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:25,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:25,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:25,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659180885] [2024-06-28 02:23:25,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:25,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:25,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:25,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:25,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:25,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:25,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 364 transitions, 5701 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:25,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:25,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:25,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:26,079 INFO L124 PetriNetUnfolderBase]: 2456/4087 cut-off events. [2024-06-28 02:23:26,080 INFO L125 PetriNetUnfolderBase]: For 253657/253657 co-relation queries the response was YES. [2024-06-28 02:23:26,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29424 conditions, 4087 events. 2456/4087 cut-off events. For 253657/253657 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 25324 event pairs, 468 based on Foata normal form. 2/4088 useless extension candidates. Maximal degree in co-relation 29308. Up to 3743 conditions per place. [2024-06-28 02:23:26,128 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 351 selfloop transitions, 24 changer transitions 0/382 dead transitions. [2024-06-28 02:23:26,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 382 transitions, 6533 flow [2024-06-28 02:23:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:26,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 02:23:26,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 02:23:26,129 INFO L175 Difference]: Start difference. First operand has 247 places, 364 transitions, 5701 flow. Second operand 7 states and 154 transitions. [2024-06-28 02:23:26,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 382 transitions, 6533 flow [2024-06-28 02:23:26,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 382 transitions, 6399 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:26,775 INFO L231 Difference]: Finished difference. Result has 249 places, 367 transitions, 5676 flow [2024-06-28 02:23:26,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5567, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5676, PETRI_PLACES=249, PETRI_TRANSITIONS=367} [2024-06-28 02:23:26,776 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-28 02:23:26,776 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 367 transitions, 5676 flow [2024-06-28 02:23:26,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:26,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:26,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:26,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:23:26,776 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:26,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:26,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1587497067, now seen corresponding path program 4 times [2024-06-28 02:23:26,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:26,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386229897] [2024-06-28 02:23:26,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:26,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:26,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:26,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386229897] [2024-06-28 02:23:26,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386229897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:26,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:26,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:26,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983051754] [2024-06-28 02:23:26,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:26,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:26,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:26,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:26,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:26,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:26,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 367 transitions, 5676 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:26,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:26,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:26,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:27,568 INFO L124 PetriNetUnfolderBase]: 2619/4349 cut-off events. [2024-06-28 02:23:27,568 INFO L125 PetriNetUnfolderBase]: For 365225/365225 co-relation queries the response was YES. [2024-06-28 02:23:27,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30408 conditions, 4349 events. 2619/4349 cut-off events. For 365225/365225 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 27286 event pairs, 430 based on Foata normal form. 54/4402 useless extension candidates. Maximal degree in co-relation 30290. Up to 3307 conditions per place. [2024-06-28 02:23:27,615 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 284 selfloop transitions, 116 changer transitions 1/408 dead transitions. [2024-06-28 02:23:27,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 408 transitions, 6808 flow [2024-06-28 02:23:27,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:27,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 02:23:27,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-28 02:23:27,616 INFO L175 Difference]: Start difference. First operand has 249 places, 367 transitions, 5676 flow. Second operand 8 states and 208 transitions. [2024-06-28 02:23:27,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 408 transitions, 6808 flow [2024-06-28 02:23:28,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 408 transitions, 6731 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:28,235 INFO L231 Difference]: Finished difference. Result has 253 places, 370 transitions, 5932 flow [2024-06-28 02:23:28,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5599, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5932, PETRI_PLACES=253, PETRI_TRANSITIONS=370} [2024-06-28 02:23:28,236 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-28 02:23:28,236 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 370 transitions, 5932 flow [2024-06-28 02:23:28,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:28,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:28,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:28,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:23:28,237 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:28,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:28,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1587312369, now seen corresponding path program 2 times [2024-06-28 02:23:28,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:28,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387841215] [2024-06-28 02:23:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:28,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:28,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:28,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387841215] [2024-06-28 02:23:28,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387841215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:28,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:28,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401385149] [2024-06-28 02:23:28,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:28,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:28,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:28,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:28,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:28,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:28,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 370 transitions, 5932 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:28,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:28,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:28,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:28,960 INFO L124 PetriNetUnfolderBase]: 2622/4359 cut-off events. [2024-06-28 02:23:28,960 INFO L125 PetriNetUnfolderBase]: For 268674/268674 co-relation queries the response was YES. [2024-06-28 02:23:28,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31284 conditions, 4359 events. 2622/4359 cut-off events. For 268674/268674 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 27319 event pairs, 515 based on Foata normal form. 2/4360 useless extension candidates. Maximal degree in co-relation 31165. Up to 4006 conditions per place. [2024-06-28 02:23:29,011 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 353 selfloop transitions, 29 changer transitions 0/389 dead transitions. [2024-06-28 02:23:29,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 389 transitions, 6823 flow [2024-06-28 02:23:29,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:23:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:23:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 02:23:29,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-28 02:23:29,012 INFO L175 Difference]: Start difference. First operand has 253 places, 370 transitions, 5932 flow. Second operand 6 states and 136 transitions. [2024-06-28 02:23:29,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 389 transitions, 6823 flow [2024-06-28 02:23:29,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 389 transitions, 6543 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:29,696 INFO L231 Difference]: Finished difference. Result has 253 places, 375 transitions, 5815 flow [2024-06-28 02:23:29,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5660, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5815, PETRI_PLACES=253, PETRI_TRANSITIONS=375} [2024-06-28 02:23:29,697 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-28 02:23:29,697 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 375 transitions, 5815 flow [2024-06-28 02:23:29,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:29,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:29,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:29,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:23:29,698 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:29,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:29,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1359411219, now seen corresponding path program 3 times [2024-06-28 02:23:29,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:29,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74432090] [2024-06-28 02:23:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:29,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:29,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:29,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74432090] [2024-06-28 02:23:29,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74432090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:29,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:29,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:29,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132700332] [2024-06-28 02:23:29,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:29,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:29,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:29,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:29,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:29,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 375 transitions, 5815 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:29,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:29,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:29,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:30,454 INFO L124 PetriNetUnfolderBase]: 2630/4371 cut-off events. [2024-06-28 02:23:30,454 INFO L125 PetriNetUnfolderBase]: For 264710/264710 co-relation queries the response was YES. [2024-06-28 02:23:30,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30656 conditions, 4371 events. 2630/4371 cut-off events. For 264710/264710 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 27440 event pairs, 517 based on Foata normal form. 2/4372 useless extension candidates. Maximal degree in co-relation 30536. Up to 4012 conditions per place. [2024-06-28 02:23:30,504 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 354 selfloop transitions, 29 changer transitions 0/390 dead transitions. [2024-06-28 02:23:30,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 390 transitions, 6655 flow [2024-06-28 02:23:30,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:23:30,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:23:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 02:23:30,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-06-28 02:23:30,505 INFO L175 Difference]: Start difference. First operand has 253 places, 375 transitions, 5815 flow. Second operand 5 states and 118 transitions. [2024-06-28 02:23:30,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 390 transitions, 6655 flow [2024-06-28 02:23:31,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 390 transitions, 6581 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 02:23:31,148 INFO L231 Difference]: Finished difference. Result has 256 places, 377 transitions, 5856 flow [2024-06-28 02:23:31,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5745, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5856, PETRI_PLACES=256, PETRI_TRANSITIONS=377} [2024-06-28 02:23:31,148 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 215 predicate places. [2024-06-28 02:23:31,148 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 377 transitions, 5856 flow [2024-06-28 02:23:31,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:31,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:31,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:31,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:23:31,149 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:31,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:31,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1350840339, now seen corresponding path program 4 times [2024-06-28 02:23:31,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:31,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094576615] [2024-06-28 02:23:31,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:31,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:31,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:31,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:31,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094576615] [2024-06-28 02:23:31,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094576615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:31,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:31,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:31,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344124636] [2024-06-28 02:23:31,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:31,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:31,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:31,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:31,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:31,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:31,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 377 transitions, 5856 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:31,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:31,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:31,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:31,887 INFO L124 PetriNetUnfolderBase]: 2625/4357 cut-off events. [2024-06-28 02:23:31,888 INFO L125 PetriNetUnfolderBase]: For 260687/260690 co-relation queries the response was YES. [2024-06-28 02:23:31,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30441 conditions, 4357 events. 2625/4357 cut-off events. For 260687/260690 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 27243 event pairs, 521 based on Foata normal form. 4/4359 useless extension candidates. Maximal degree in co-relation 30320. Up to 3991 conditions per place. [2024-06-28 02:23:31,941 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 353 selfloop transitions, 30 changer transitions 0/390 dead transitions. [2024-06-28 02:23:31,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 390 transitions, 6690 flow [2024-06-28 02:23:31,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:23:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:23:31,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 02:23:31,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-28 02:23:31,942 INFO L175 Difference]: Start difference. First operand has 256 places, 377 transitions, 5856 flow. Second operand 5 states and 115 transitions. [2024-06-28 02:23:31,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 390 transitions, 6690 flow [2024-06-28 02:23:32,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 390 transitions, 6601 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:32,562 INFO L231 Difference]: Finished difference. Result has 258 places, 379 transitions, 5878 flow [2024-06-28 02:23:32,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5771, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5878, PETRI_PLACES=258, PETRI_TRANSITIONS=379} [2024-06-28 02:23:32,563 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 217 predicate places. [2024-06-28 02:23:32,563 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 379 transitions, 5878 flow [2024-06-28 02:23:32,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:32,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:32,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:32,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:23:32,564 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:32,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2141918283, now seen corresponding path program 1 times [2024-06-28 02:23:32,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:32,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356104485] [2024-06-28 02:23:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:32,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:32,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:32,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356104485] [2024-06-28 02:23:32,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356104485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:32,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:32,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:32,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961829113] [2024-06-28 02:23:32,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:32,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:32,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:32,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:32,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:32,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:32,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 379 transitions, 5878 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:32,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:32,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:32,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:33,505 INFO L124 PetriNetUnfolderBase]: 2939/4889 cut-off events. [2024-06-28 02:23:33,505 INFO L125 PetriNetUnfolderBase]: For 420280/420280 co-relation queries the response was YES. [2024-06-28 02:23:33,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35365 conditions, 4889 events. 2939/4889 cut-off events. For 420280/420280 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 31141 event pairs, 590 based on Foata normal form. 36/4915 useless extension candidates. Maximal degree in co-relation 35243. Up to 2682 conditions per place. [2024-06-28 02:23:33,565 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 184 selfloop transitions, 232 changer transitions 7/430 dead transitions. [2024-06-28 02:23:33,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 430 transitions, 7516 flow [2024-06-28 02:23:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 02:23:33,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.671875 [2024-06-28 02:23:33,566 INFO L175 Difference]: Start difference. First operand has 258 places, 379 transitions, 5878 flow. Second operand 8 states and 215 transitions. [2024-06-28 02:23:33,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 430 transitions, 7516 flow [2024-06-28 02:23:34,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 430 transitions, 7425 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:34,363 INFO L231 Difference]: Finished difference. Result has 263 places, 382 transitions, 6338 flow [2024-06-28 02:23:34,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5787, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6338, PETRI_PLACES=263, PETRI_TRANSITIONS=382} [2024-06-28 02:23:34,364 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-06-28 02:23:34,364 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 382 transitions, 6338 flow [2024-06-28 02:23:34,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:34,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:34,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:34,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:23:34,365 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:34,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:34,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1887351733, now seen corresponding path program 2 times [2024-06-28 02:23:34,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:34,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57721593] [2024-06-28 02:23:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:34,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:34,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:34,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57721593] [2024-06-28 02:23:34,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57721593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:34,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:34,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:34,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586625301] [2024-06-28 02:23:34,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:34,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:34,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:34,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:34,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:34,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 382 transitions, 6338 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:34,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:34,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:34,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:35,363 INFO L124 PetriNetUnfolderBase]: 3216/5338 cut-off events. [2024-06-28 02:23:35,363 INFO L125 PetriNetUnfolderBase]: For 536264/536264 co-relation queries the response was YES. [2024-06-28 02:23:35,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41359 conditions, 5338 events. 3216/5338 cut-off events. For 536264/536264 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 34521 event pairs, 832 based on Foata normal form. 36/5364 useless extension candidates. Maximal degree in co-relation 41236. Up to 3825 conditions per place. [2024-06-28 02:23:35,537 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 194 selfloop transitions, 221 changer transitions 4/426 dead transitions. [2024-06-28 02:23:35,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 426 transitions, 7956 flow [2024-06-28 02:23:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:35,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 02:23:35,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-06-28 02:23:35,538 INFO L175 Difference]: Start difference. First operand has 263 places, 382 transitions, 6338 flow. Second operand 8 states and 210 transitions. [2024-06-28 02:23:35,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 426 transitions, 7956 flow [2024-06-28 02:23:36,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 426 transitions, 7606 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:36,394 INFO L231 Difference]: Finished difference. Result has 267 places, 385 transitions, 6540 flow [2024-06-28 02:23:36,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5996, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6540, PETRI_PLACES=267, PETRI_TRANSITIONS=385} [2024-06-28 02:23:36,395 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-28 02:23:36,395 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 385 transitions, 6540 flow [2024-06-28 02:23:36,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:36,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:36,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:36,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:23:36,396 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:36,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1887025303, now seen corresponding path program 3 times [2024-06-28 02:23:36,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:36,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385256789] [2024-06-28 02:23:36,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:36,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:36,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:36,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385256789] [2024-06-28 02:23:36,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385256789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:36,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:36,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:36,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391156846] [2024-06-28 02:23:36,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:36,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:36,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:36,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:36,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:36,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:36,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 385 transitions, 6540 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:36,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:36,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:36,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:37,351 INFO L124 PetriNetUnfolderBase]: 3099/5163 cut-off events. [2024-06-28 02:23:37,352 INFO L125 PetriNetUnfolderBase]: For 469366/469366 co-relation queries the response was YES. [2024-06-28 02:23:37,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38265 conditions, 5163 events. 3099/5163 cut-off events. For 469366/469366 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 33347 event pairs, 828 based on Foata normal form. 42/5195 useless extension candidates. Maximal degree in co-relation 38140. Up to 3987 conditions per place. [2024-06-28 02:23:37,415 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 192 selfloop transitions, 216 changer transitions 3/418 dead transitions. [2024-06-28 02:23:37,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 418 transitions, 7864 flow [2024-06-28 02:23:37,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 02:23:37,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.634375 [2024-06-28 02:23:37,416 INFO L175 Difference]: Start difference. First operand has 267 places, 385 transitions, 6540 flow. Second operand 8 states and 203 transitions. [2024-06-28 02:23:37,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 418 transitions, 7864 flow [2024-06-28 02:23:38,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 418 transitions, 7507 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:38,277 INFO L231 Difference]: Finished difference. Result has 271 places, 384 transitions, 6612 flow [2024-06-28 02:23:38,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6183, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6612, PETRI_PLACES=271, PETRI_TRANSITIONS=384} [2024-06-28 02:23:38,278 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-28 02:23:38,278 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 384 transitions, 6612 flow [2024-06-28 02:23:38,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:38,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:38,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:38,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:23:38,279 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:38,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:38,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1572727905, now seen corresponding path program 4 times [2024-06-28 02:23:38,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:38,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679729303] [2024-06-28 02:23:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:38,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:38,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:38,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679729303] [2024-06-28 02:23:38,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679729303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:38,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:38,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:38,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869301882] [2024-06-28 02:23:38,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:38,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:38,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:38,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:38,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:38,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:38,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 384 transitions, 6612 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:38,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:38,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:38,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:39,297 INFO L124 PetriNetUnfolderBase]: 3221/5363 cut-off events. [2024-06-28 02:23:39,297 INFO L125 PetriNetUnfolderBase]: For 483408/483408 co-relation queries the response was YES. [2024-06-28 02:23:39,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39605 conditions, 5363 events. 3221/5363 cut-off events. For 483408/483408 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 34966 event pairs, 874 based on Foata normal form. 42/5395 useless extension candidates. Maximal degree in co-relation 39478. Up to 4189 conditions per place. [2024-06-28 02:23:39,362 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 212 selfloop transitions, 190 changer transitions 3/412 dead transitions. [2024-06-28 02:23:39,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 412 transitions, 7834 flow [2024-06-28 02:23:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:23:39,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615625 [2024-06-28 02:23:39,363 INFO L175 Difference]: Start difference. First operand has 271 places, 384 transitions, 6612 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:23:39,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 412 transitions, 7834 flow [2024-06-28 02:23:40,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 412 transitions, 7394 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:40,348 INFO L231 Difference]: Finished difference. Result has 272 places, 385 transitions, 6610 flow [2024-06-28 02:23:40,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6172, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6610, PETRI_PLACES=272, PETRI_TRANSITIONS=385} [2024-06-28 02:23:40,349 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 231 predicate places. [2024-06-28 02:23:40,349 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 385 transitions, 6610 flow [2024-06-28 02:23:40,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:40,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:40,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:40,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:23:40,349 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:40,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1583452665, now seen corresponding path program 5 times [2024-06-28 02:23:40,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:40,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636292117] [2024-06-28 02:23:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:40,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:40,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:40,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:40,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636292117] [2024-06-28 02:23:40,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636292117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:40,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:40,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:40,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246131099] [2024-06-28 02:23:40,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:40,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:40,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:40,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:40,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:40,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:40,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 385 transitions, 6610 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:40,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:40,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:40,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:41,457 INFO L124 PetriNetUnfolderBase]: 3343/5587 cut-off events. [2024-06-28 02:23:41,457 INFO L125 PetriNetUnfolderBase]: For 496092/496092 co-relation queries the response was YES. [2024-06-28 02:23:41,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40808 conditions, 5587 events. 3343/5587 cut-off events. For 496092/496092 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 36840 event pairs, 934 based on Foata normal form. 42/5619 useless extension candidates. Maximal degree in co-relation 40680. Up to 4391 conditions per place. [2024-06-28 02:23:41,518 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 213 selfloop transitions, 190 changer transitions 3/413 dead transitions. [2024-06-28 02:23:41,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 413 transitions, 7842 flow [2024-06-28 02:23:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 02:23:41,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.61875 [2024-06-28 02:23:41,519 INFO L175 Difference]: Start difference. First operand has 272 places, 385 transitions, 6610 flow. Second operand 8 states and 198 transitions. [2024-06-28 02:23:41,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 413 transitions, 7842 flow [2024-06-28 02:23:42,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 413 transitions, 7432 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:42,504 INFO L231 Difference]: Finished difference. Result has 274 places, 386 transitions, 6642 flow [2024-06-28 02:23:42,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6200, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6642, PETRI_PLACES=274, PETRI_TRANSITIONS=386} [2024-06-28 02:23:42,504 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-28 02:23:42,504 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 386 transitions, 6642 flow [2024-06-28 02:23:42,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:42,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:42,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:42,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:23:42,505 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:42,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1583779095, now seen corresponding path program 6 times [2024-06-28 02:23:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:42,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046772211] [2024-06-28 02:23:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:42,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:42,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:42,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046772211] [2024-06-28 02:23:42,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046772211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:42,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:42,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:42,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339913231] [2024-06-28 02:23:42,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:42,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:42,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:42,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:42,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:42,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:42,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 386 transitions, 6642 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:42,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:42,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:42,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:43,536 INFO L124 PetriNetUnfolderBase]: 3441/5753 cut-off events. [2024-06-28 02:23:43,537 INFO L125 PetriNetUnfolderBase]: For 497249/497249 co-relation queries the response was YES. [2024-06-28 02:23:43,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41622 conditions, 5753 events. 3441/5753 cut-off events. For 497249/497249 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 38152 event pairs, 918 based on Foata normal form. 36/5779 useless extension candidates. Maximal degree in co-relation 41493. Up to 4163 conditions per place. [2024-06-28 02:23:43,608 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 212 selfloop transitions, 195 changer transitions 6/420 dead transitions. [2024-06-28 02:23:43,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 420 transitions, 7930 flow [2024-06-28 02:23:43,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 02:23:43,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-06-28 02:23:43,609 INFO L175 Difference]: Start difference. First operand has 274 places, 386 transitions, 6642 flow. Second operand 8 states and 202 transitions. [2024-06-28 02:23:43,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 420 transitions, 7930 flow [2024-06-28 02:23:44,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 420 transitions, 7516 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:44,904 INFO L231 Difference]: Finished difference. Result has 276 places, 387 transitions, 6675 flow [2024-06-28 02:23:44,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6228, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6675, PETRI_PLACES=276, PETRI_TRANSITIONS=387} [2024-06-28 02:23:44,905 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-28 02:23:44,905 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 387 transitions, 6675 flow [2024-06-28 02:23:44,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:44,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:44,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:44,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:23:44,905 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:44,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:44,906 INFO L85 PathProgramCache]: Analyzing trace with hash 26816525, now seen corresponding path program 1 times [2024-06-28 02:23:44,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:44,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154692823] [2024-06-28 02:23:44,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:44,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:44,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:44,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:44,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154692823] [2024-06-28 02:23:44,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154692823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:44,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:44,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:23:44,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935790831] [2024-06-28 02:23:44,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:44,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:23:44,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:44,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:23:44,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:23:45,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:45,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 387 transitions, 6675 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:45,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:45,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:45,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:45,950 INFO L124 PetriNetUnfolderBase]: 3440/5770 cut-off events. [2024-06-28 02:23:45,951 INFO L125 PetriNetUnfolderBase]: For 432065/432068 co-relation queries the response was YES. [2024-06-28 02:23:46,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42119 conditions, 5770 events. 3440/5770 cut-off events. For 432065/432068 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 38512 event pairs, 975 based on Foata normal form. 3/5764 useless extension candidates. Maximal degree in co-relation 41989. Up to 5076 conditions per place. [2024-06-28 02:23:46,025 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 308 selfloop transitions, 103 changer transitions 0/418 dead transitions. [2024-06-28 02:23:46,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 418 transitions, 8211 flow [2024-06-28 02:23:46,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:23:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:23:46,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 02:23:46,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-06-28 02:23:46,026 INFO L175 Difference]: Start difference. First operand has 276 places, 387 transitions, 6675 flow. Second operand 6 states and 147 transitions. [2024-06-28 02:23:46,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 418 transitions, 8211 flow [2024-06-28 02:23:47,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 418 transitions, 7766 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:47,288 INFO L231 Difference]: Finished difference. Result has 276 places, 399 transitions, 6684 flow [2024-06-28 02:23:47,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6246, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6684, PETRI_PLACES=276, PETRI_TRANSITIONS=399} [2024-06-28 02:23:47,288 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-28 02:23:47,288 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 399 transitions, 6684 flow [2024-06-28 02:23:47,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:47,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:47,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:47,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:23:47,290 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:47,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:47,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1502596925, now seen corresponding path program 2 times [2024-06-28 02:23:47,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:47,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871273799] [2024-06-28 02:23:47,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:47,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:47,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:47,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871273799] [2024-06-28 02:23:47,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871273799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:47,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:47,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:23:47,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302012176] [2024-06-28 02:23:47,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:47,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:23:47,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:47,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:23:47,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:23:47,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:47,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 399 transitions, 6684 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:47,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:47,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:47,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:48,329 INFO L124 PetriNetUnfolderBase]: 3437/5764 cut-off events. [2024-06-28 02:23:48,330 INFO L125 PetriNetUnfolderBase]: For 434861/434864 co-relation queries the response was YES. [2024-06-28 02:23:48,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41505 conditions, 5764 events. 3437/5764 cut-off events. For 434861/434864 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 38425 event pairs, 976 based on Foata normal form. 3/5758 useless extension candidates. Maximal degree in co-relation 41374. Up to 5073 conditions per place. [2024-06-28 02:23:48,397 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 309 selfloop transitions, 99 changer transitions 0/415 dead transitions. [2024-06-28 02:23:48,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 415 transitions, 7970 flow [2024-06-28 02:23:48,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:23:48,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:23:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 02:23:48,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-06-28 02:23:48,397 INFO L175 Difference]: Start difference. First operand has 276 places, 399 transitions, 6684 flow. Second operand 6 states and 145 transitions. [2024-06-28 02:23:48,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 415 transitions, 7970 flow [2024-06-28 02:23:49,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 415 transitions, 7826 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 02:23:49,379 INFO L231 Difference]: Finished difference. Result has 280 places, 399 transitions, 6744 flow [2024-06-28 02:23:49,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6540, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6744, PETRI_PLACES=280, PETRI_TRANSITIONS=399} [2024-06-28 02:23:49,379 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 239 predicate places. [2024-06-28 02:23:49,380 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 399 transitions, 6744 flow [2024-06-28 02:23:49,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:49,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:49,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:49,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:23:49,380 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:49,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1496936015, now seen corresponding path program 3 times [2024-06-28 02:23:49,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:49,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727609668] [2024-06-28 02:23:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:49,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:49,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:49,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727609668] [2024-06-28 02:23:49,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727609668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:49,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:49,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:23:49,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396442499] [2024-06-28 02:23:49,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:49,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:23:49,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:49,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:23:49,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:23:49,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:49,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 399 transitions, 6744 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:49,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:49,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:49,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:50,352 INFO L124 PetriNetUnfolderBase]: 3434/5761 cut-off events. [2024-06-28 02:23:50,352 INFO L125 PetriNetUnfolderBase]: For 443825/443836 co-relation queries the response was YES. [2024-06-28 02:23:50,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41596 conditions, 5761 events. 3434/5761 cut-off events. For 443825/443836 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 38481 event pairs, 970 based on Foata normal form. 11/5764 useless extension candidates. Maximal degree in co-relation 41464. Up to 5070 conditions per place. [2024-06-28 02:23:50,432 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 309 selfloop transitions, 104 changer transitions 0/420 dead transitions. [2024-06-28 02:23:50,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 420 transitions, 7914 flow [2024-06-28 02:23:50,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:23:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:23:50,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 02:23:50,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6208333333333333 [2024-06-28 02:23:50,433 INFO L175 Difference]: Start difference. First operand has 280 places, 399 transitions, 6744 flow. Second operand 6 states and 149 transitions. [2024-06-28 02:23:50,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 420 transitions, 7914 flow [2024-06-28 02:23:51,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 420 transitions, 7717 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:51,487 INFO L231 Difference]: Finished difference. Result has 283 places, 399 transitions, 6761 flow [2024-06-28 02:23:51,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6547, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6761, PETRI_PLACES=283, PETRI_TRANSITIONS=399} [2024-06-28 02:23:51,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-28 02:23:51,487 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 399 transitions, 6761 flow [2024-06-28 02:23:51,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:51,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:51,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:51,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:23:51,488 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:51,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:51,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1497055985, now seen corresponding path program 4 times [2024-06-28 02:23:51,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:51,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057758660] [2024-06-28 02:23:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:51,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:51,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:51,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057758660] [2024-06-28 02:23:51,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057758660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:51,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:51,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:51,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62245491] [2024-06-28 02:23:51,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:51,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:51,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:51,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:51,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:51,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:51,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 399 transitions, 6761 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:23:51,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:51,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:51,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:52,514 INFO L124 PetriNetUnfolderBase]: 3439/5752 cut-off events. [2024-06-28 02:23:52,514 INFO L125 PetriNetUnfolderBase]: For 454474/454474 co-relation queries the response was YES. [2024-06-28 02:23:52,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41729 conditions, 5752 events. 3439/5752 cut-off events. For 454474/454474 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 38244 event pairs, 953 based on Foata normal form. 1/5743 useless extension candidates. Maximal degree in co-relation 41597. Up to 5076 conditions per place. [2024-06-28 02:23:52,589 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 303 selfloop transitions, 117 changer transitions 0/427 dead transitions. [2024-06-28 02:23:52,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 427 transitions, 8015 flow [2024-06-28 02:23:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:52,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:23:52,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2024-06-28 02:23:52,590 INFO L175 Difference]: Start difference. First operand has 283 places, 399 transitions, 6761 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:23:52,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 427 transitions, 8015 flow [2024-06-28 02:23:53,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 427 transitions, 7613 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:53,702 INFO L231 Difference]: Finished difference. Result has 283 places, 402 transitions, 6655 flow [2024-06-28 02:23:53,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6371, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6655, PETRI_PLACES=283, PETRI_TRANSITIONS=402} [2024-06-28 02:23:53,702 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-28 02:23:53,702 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 402 transitions, 6655 flow [2024-06-28 02:23:53,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:23:53,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:53,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:53,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:23:53,703 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:53,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash 943767667, now seen corresponding path program 5 times [2024-06-28 02:23:53,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:53,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853708452] [2024-06-28 02:23:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:53,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:53,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:53,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853708452] [2024-06-28 02:23:53,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853708452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:53,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:53,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:53,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692817207] [2024-06-28 02:23:53,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:53,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:53,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:53,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:53,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:53,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:53,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 402 transitions, 6655 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:23:53,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:53,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:53,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:54,720 INFO L124 PetriNetUnfolderBase]: 3436/5752 cut-off events. [2024-06-28 02:23:54,720 INFO L125 PetriNetUnfolderBase]: For 458929/458929 co-relation queries the response was YES. [2024-06-28 02:23:54,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41681 conditions, 5752 events. 3436/5752 cut-off events. For 458929/458929 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 38289 event pairs, 946 based on Foata normal form. 1/5743 useless extension candidates. Maximal degree in co-relation 41550. Up to 5073 conditions per place. [2024-06-28 02:23:54,915 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 305 selfloop transitions, 112 changer transitions 0/424 dead transitions. [2024-06-28 02:23:54,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 424 transitions, 7991 flow [2024-06-28 02:23:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-28 02:23:54,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5722222222222222 [2024-06-28 02:23:54,916 INFO L175 Difference]: Start difference. First operand has 283 places, 402 transitions, 6655 flow. Second operand 9 states and 206 transitions. [2024-06-28 02:23:54,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 424 transitions, 7991 flow [2024-06-28 02:23:55,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 424 transitions, 7828 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:56,004 INFO L231 Difference]: Finished difference. Result has 288 places, 402 transitions, 6722 flow [2024-06-28 02:23:56,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6492, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6722, PETRI_PLACES=288, PETRI_TRANSITIONS=402} [2024-06-28 02:23:56,004 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-28 02:23:56,005 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 402 transitions, 6722 flow [2024-06-28 02:23:56,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:23:56,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:56,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:56,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:23:56,005 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:56,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:56,005 INFO L85 PathProgramCache]: Analyzing trace with hash 217646207, now seen corresponding path program 1 times [2024-06-28 02:23:56,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:56,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245482312] [2024-06-28 02:23:56,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:56,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:56,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:56,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245482312] [2024-06-28 02:23:56,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245482312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:56,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:56,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:56,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117833846] [2024-06-28 02:23:56,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:56,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:56,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:56,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:56,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:56,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:56,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 402 transitions, 6722 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:56,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:56,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:56,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:57,044 INFO L124 PetriNetUnfolderBase]: 3446/5765 cut-off events. [2024-06-28 02:23:57,044 INFO L125 PetriNetUnfolderBase]: For 475335/475335 co-relation queries the response was YES. [2024-06-28 02:23:57,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41989 conditions, 5765 events. 3446/5765 cut-off events. For 475335/475335 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 38341 event pairs, 976 based on Foata normal form. 2/5757 useless extension candidates. Maximal degree in co-relation 41856. Up to 4739 conditions per place. [2024-06-28 02:23:57,123 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 210 selfloop transitions, 212 changer transitions 0/429 dead transitions. [2024-06-28 02:23:57,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 429 transitions, 7999 flow [2024-06-28 02:23:57,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 02:23:57,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.603125 [2024-06-28 02:23:57,124 INFO L175 Difference]: Start difference. First operand has 288 places, 402 transitions, 6722 flow. Second operand 8 states and 193 transitions. [2024-06-28 02:23:57,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 429 transitions, 7999 flow [2024-06-28 02:23:58,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 429 transitions, 7737 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:58,368 INFO L231 Difference]: Finished difference. Result has 289 places, 406 transitions, 6966 flow [2024-06-28 02:23:58,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6460, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6966, PETRI_PLACES=289, PETRI_TRANSITIONS=406} [2024-06-28 02:23:58,368 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 248 predicate places. [2024-06-28 02:23:58,368 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 406 transitions, 6966 flow [2024-06-28 02:23:58,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:58,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:58,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:58,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:23:58,369 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:58,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:58,369 INFO L85 PathProgramCache]: Analyzing trace with hash 642108981, now seen corresponding path program 2 times [2024-06-28 02:23:58,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:58,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205291626] [2024-06-28 02:23:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:58,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:58,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205291626] [2024-06-28 02:23:58,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205291626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:58,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:58,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:58,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601383246] [2024-06-28 02:23:58,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:58,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:58,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:58,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:58,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:58,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:23:58,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 406 transitions, 6966 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:58,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:58,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:23:58,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:59,503 INFO L124 PetriNetUnfolderBase]: 3456/5782 cut-off events. [2024-06-28 02:23:59,503 INFO L125 PetriNetUnfolderBase]: For 487304/487304 co-relation queries the response was YES. [2024-06-28 02:23:59,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42610 conditions, 5782 events. 3456/5782 cut-off events. For 487304/487304 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 38513 event pairs, 974 based on Foata normal form. 2/5774 useless extension candidates. Maximal degree in co-relation 42477. Up to 4749 conditions per place. [2024-06-28 02:23:59,575 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 209 selfloop transitions, 217 changer transitions 0/433 dead transitions. [2024-06-28 02:23:59,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 433 transitions, 8263 flow [2024-06-28 02:23:59,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:59,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:23:59,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-06-28 02:23:59,576 INFO L175 Difference]: Start difference. First operand has 289 places, 406 transitions, 6966 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:23:59,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 433 transitions, 8263 flow [2024-06-28 02:24:01,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 433 transitions, 7793 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:01,195 INFO L231 Difference]: Finished difference. Result has 291 places, 410 transitions, 7020 flow [2024-06-28 02:24:01,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6502, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7020, PETRI_PLACES=291, PETRI_TRANSITIONS=410} [2024-06-28 02:24:01,196 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-28 02:24:01,196 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 410 transitions, 7020 flow [2024-06-28 02:24:01,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:01,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:01,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:01,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:24:01,197 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:01,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:01,197 INFO L85 PathProgramCache]: Analyzing trace with hash 642131859, now seen corresponding path program 6 times [2024-06-28 02:24:01,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:01,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442190804] [2024-06-28 02:24:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:01,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:01,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:01,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442190804] [2024-06-28 02:24:01,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442190804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:01,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:01,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:24:01,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728891991] [2024-06-28 02:24:01,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:01,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:24:01,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:01,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:24:01,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:24:01,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:01,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 410 transitions, 7020 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:24:01,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:01,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:01,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:02,199 INFO L124 PetriNetUnfolderBase]: 3453/5786 cut-off events. [2024-06-28 02:24:02,199 INFO L125 PetriNetUnfolderBase]: For 492370/492370 co-relation queries the response was YES. [2024-06-28 02:24:02,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42614 conditions, 5786 events. 3453/5786 cut-off events. For 492370/492370 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 38588 event pairs, 946 based on Foata normal form. 1/5777 useless extension candidates. Maximal degree in co-relation 42480. Up to 5098 conditions per place. [2024-06-28 02:24:02,274 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 315 selfloop transitions, 107 changer transitions 0/429 dead transitions. [2024-06-28 02:24:02,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 429 transitions, 8222 flow [2024-06-28 02:24:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:24:02,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:24:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:24:02,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 02:24:02,275 INFO L175 Difference]: Start difference. First operand has 291 places, 410 transitions, 7020 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:24:02,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 429 transitions, 8222 flow [2024-06-28 02:24:03,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 429 transitions, 7745 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:03,750 INFO L231 Difference]: Finished difference. Result has 292 places, 410 transitions, 6765 flow [2024-06-28 02:24:03,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6543, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6765, PETRI_PLACES=292, PETRI_TRANSITIONS=410} [2024-06-28 02:24:03,756 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-28 02:24:03,756 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 410 transitions, 6765 flow [2024-06-28 02:24:03,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:24:03,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:03,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:03,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:24:03,757 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:03,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:03,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2047076799, now seen corresponding path program 3 times [2024-06-28 02:24:03,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:03,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506927377] [2024-06-28 02:24:03,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:03,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:03,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:03,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:03,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506927377] [2024-06-28 02:24:03,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506927377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:03,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:03,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:03,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430704900] [2024-06-28 02:24:03,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:03,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:03,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:03,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:03,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:03,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:03,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 410 transitions, 6765 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:03,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:03,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:03,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:04,901 INFO L124 PetriNetUnfolderBase]: 3487/5836 cut-off events. [2024-06-28 02:24:04,901 INFO L125 PetriNetUnfolderBase]: For 516116/516116 co-relation queries the response was YES. [2024-06-28 02:24:04,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43073 conditions, 5836 events. 3487/5836 cut-off events. For 516116/516116 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 38986 event pairs, 978 based on Foata normal form. 2/5828 useless extension candidates. Maximal degree in co-relation 42938. Up to 4781 conditions per place. [2024-06-28 02:24:04,978 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 225 selfloop transitions, 211 changer transitions 0/443 dead transitions. [2024-06-28 02:24:04,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 443 transitions, 8372 flow [2024-06-28 02:24:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:04,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 02:24:04,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-28 02:24:04,979 INFO L175 Difference]: Start difference. First operand has 292 places, 410 transitions, 6765 flow. Second operand 9 states and 212 transitions. [2024-06-28 02:24:04,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 443 transitions, 8372 flow [2024-06-28 02:24:06,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 443 transitions, 8169 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:06,688 INFO L231 Difference]: Finished difference. Result has 295 places, 420 transitions, 7178 flow [2024-06-28 02:24:06,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6562, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7178, PETRI_PLACES=295, PETRI_TRANSITIONS=420} [2024-06-28 02:24:06,689 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-28 02:24:06,689 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 420 transitions, 7178 flow [2024-06-28 02:24:06,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:06,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:06,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:06,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:24:06,689 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:06,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:06,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1903436221, now seen corresponding path program 4 times [2024-06-28 02:24:06,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:06,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079898509] [2024-06-28 02:24:06,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:06,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:06,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:06,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:06,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079898509] [2024-06-28 02:24:06,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079898509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:06,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:06,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:06,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323264054] [2024-06-28 02:24:06,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:06,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:06,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:06,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:06,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:06,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:06,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 420 transitions, 7178 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:06,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:06,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:06,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:07,986 INFO L124 PetriNetUnfolderBase]: 3505/5874 cut-off events. [2024-06-28 02:24:07,986 INFO L125 PetriNetUnfolderBase]: For 534021/534021 co-relation queries the response was YES. [2024-06-28 02:24:08,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43975 conditions, 5874 events. 3505/5874 cut-off events. For 534021/534021 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 39346 event pairs, 966 based on Foata normal form. 2/5866 useless extension candidates. Maximal degree in co-relation 43838. Up to 4797 conditions per place. [2024-06-28 02:24:08,054 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 224 selfloop transitions, 221 changer transitions 0/452 dead transitions. [2024-06-28 02:24:08,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 452 transitions, 8955 flow [2024-06-28 02:24:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:08,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:08,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 02:24:08,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-06-28 02:24:08,055 INFO L175 Difference]: Start difference. First operand has 295 places, 420 transitions, 7178 flow. Second operand 9 states and 215 transitions. [2024-06-28 02:24:08,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 452 transitions, 8955 flow [2024-06-28 02:24:09,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 452 transitions, 8556 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-28 02:24:09,847 INFO L231 Difference]: Finished difference. Result has 299 places, 429 transitions, 7423 flow [2024-06-28 02:24:09,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6798, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7423, PETRI_PLACES=299, PETRI_TRANSITIONS=429} [2024-06-28 02:24:09,848 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-28 02:24:09,848 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 429 transitions, 7423 flow [2024-06-28 02:24:09,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:09,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:09,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:09,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:24:09,848 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:09,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:09,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1413756031, now seen corresponding path program 5 times [2024-06-28 02:24:09,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:09,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475017518] [2024-06-28 02:24:09,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:09,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:09,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:09,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475017518] [2024-06-28 02:24:09,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475017518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:09,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:09,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:09,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050455324] [2024-06-28 02:24:09,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:09,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:09,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:09,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:09,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:09,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:09,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 429 transitions, 7423 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:09,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:09,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:09,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:10,961 INFO L124 PetriNetUnfolderBase]: 3499/5859 cut-off events. [2024-06-28 02:24:10,961 INFO L125 PetriNetUnfolderBase]: For 541640/541640 co-relation queries the response was YES. [2024-06-28 02:24:11,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43835 conditions, 5859 events. 3499/5859 cut-off events. For 541640/541640 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 39113 event pairs, 990 based on Foata normal form. 2/5851 useless extension candidates. Maximal degree in co-relation 43696. Up to 4792 conditions per place. [2024-06-28 02:24:11,045 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 224 selfloop transitions, 218 changer transitions 0/449 dead transitions. [2024-06-28 02:24:11,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 449 transitions, 8679 flow [2024-06-28 02:24:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:24:11,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 02:24:11,046 INFO L175 Difference]: Start difference. First operand has 299 places, 429 transitions, 7423 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:24:11,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 449 transitions, 8679 flow [2024-06-28 02:24:12,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 449 transitions, 8196 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 02:24:12,728 INFO L231 Difference]: Finished difference. Result has 302 places, 429 transitions, 7383 flow [2024-06-28 02:24:12,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6940, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7383, PETRI_PLACES=302, PETRI_TRANSITIONS=429} [2024-06-28 02:24:12,728 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-28 02:24:12,728 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 429 transitions, 7383 flow [2024-06-28 02:24:12,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:12,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:12,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:12,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:24:12,729 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:12,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1421384263, now seen corresponding path program 1 times [2024-06-28 02:24:12,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:12,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119386242] [2024-06-28 02:24:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:12,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:12,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:12,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119386242] [2024-06-28 02:24:12,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119386242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:12,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:12,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:12,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479365154] [2024-06-28 02:24:12,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:12,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:12,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:12,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:12,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:12,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 429 transitions, 7383 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:12,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:12,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:12,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:13,956 INFO L124 PetriNetUnfolderBase]: 3741/6295 cut-off events. [2024-06-28 02:24:13,956 INFO L125 PetriNetUnfolderBase]: For 729048/729048 co-relation queries the response was YES. [2024-06-28 02:24:14,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47472 conditions, 6295 events. 3741/6295 cut-off events. For 729048/729048 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 42784 event pairs, 1021 based on Foata normal form. 36/6321 useless extension candidates. Maximal degree in co-relation 47332. Up to 4202 conditions per place. [2024-06-28 02:24:14,042 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 239 selfloop transitions, 220 changer transitions 0/466 dead transitions. [2024-06-28 02:24:14,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 466 transitions, 9027 flow [2024-06-28 02:24:14,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:14,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 02:24:14,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-06-28 02:24:14,043 INFO L175 Difference]: Start difference. First operand has 302 places, 429 transitions, 7383 flow. Second operand 8 states and 202 transitions. [2024-06-28 02:24:14,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 466 transitions, 9027 flow [2024-06-28 02:24:15,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 466 transitions, 8577 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:15,983 INFO L231 Difference]: Finished difference. Result has 304 places, 433 transitions, 7523 flow [2024-06-28 02:24:15,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6933, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7523, PETRI_PLACES=304, PETRI_TRANSITIONS=433} [2024-06-28 02:24:15,983 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-28 02:24:15,984 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 433 transitions, 7523 flow [2024-06-28 02:24:15,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:15,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:15,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:15,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:24:15,984 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:15,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:15,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1119970537, now seen corresponding path program 7 times [2024-06-28 02:24:15,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:15,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369839085] [2024-06-28 02:24:15,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:15,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:16,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:16,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369839085] [2024-06-28 02:24:16,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369839085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:16,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:16,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:16,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672502805] [2024-06-28 02:24:16,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:16,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:16,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:16,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:16,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:16,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:16,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 433 transitions, 7523 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:16,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:16,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:16,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:17,253 INFO L124 PetriNetUnfolderBase]: 3873/6537 cut-off events. [2024-06-28 02:24:17,254 INFO L125 PetriNetUnfolderBase]: For 776980/776983 co-relation queries the response was YES. [2024-06-28 02:24:17,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49228 conditions, 6537 events. 3873/6537 cut-off events. For 776980/776983 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 45122 event pairs, 1082 based on Foata normal form. 44/6579 useless extension candidates. Maximal degree in co-relation 49086. Up to 5473 conditions per place. [2024-06-28 02:24:17,344 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 313 selfloop transitions, 148 changer transitions 3/471 dead transitions. [2024-06-28 02:24:17,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 471 transitions, 9127 flow [2024-06-28 02:24:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:17,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 02:24:17,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-06-28 02:24:17,345 INFO L175 Difference]: Start difference. First operand has 304 places, 433 transitions, 7523 flow. Second operand 8 states and 206 transitions. [2024-06-28 02:24:17,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 471 transitions, 9127 flow [2024-06-28 02:24:19,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 471 transitions, 8806 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 02:24:19,449 INFO L231 Difference]: Finished difference. Result has 308 places, 434 transitions, 7564 flow [2024-06-28 02:24:19,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7202, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7564, PETRI_PLACES=308, PETRI_TRANSITIONS=434} [2024-06-28 02:24:19,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-06-28 02:24:19,450 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 434 transitions, 7564 flow [2024-06-28 02:24:19,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:19,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:19,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:19,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:24:19,450 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:19,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:19,450 INFO L85 PathProgramCache]: Analyzing trace with hash 671016559, now seen corresponding path program 8 times [2024-06-28 02:24:19,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:19,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847487078] [2024-06-28 02:24:19,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:19,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:19,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:19,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847487078] [2024-06-28 02:24:19,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847487078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:19,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:19,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:19,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301907749] [2024-06-28 02:24:19,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:19,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:19,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:19,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:19,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:19,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:19,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 434 transitions, 7564 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:19,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:19,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:19,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:20,816 INFO L124 PetriNetUnfolderBase]: 4098/6932 cut-off events. [2024-06-28 02:24:20,816 INFO L125 PetriNetUnfolderBase]: For 863522/863525 co-relation queries the response was YES. [2024-06-28 02:24:20,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53149 conditions, 6932 events. 4098/6932 cut-off events. For 863522/863525 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 48383 event pairs, 1027 based on Foata normal form. 38/6968 useless extension candidates. Maximal degree in co-relation 53005. Up to 5018 conditions per place. [2024-06-28 02:24:20,949 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 313 selfloop transitions, 158 changer transitions 4/482 dead transitions. [2024-06-28 02:24:20,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 482 transitions, 9412 flow [2024-06-28 02:24:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:20,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 02:24:20,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.671875 [2024-06-28 02:24:20,950 INFO L175 Difference]: Start difference. First operand has 308 places, 434 transitions, 7564 flow. Second operand 8 states and 215 transitions. [2024-06-28 02:24:20,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 482 transitions, 9412 flow [2024-06-28 02:24:23,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 482 transitions, 9074 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:23,314 INFO L231 Difference]: Finished difference. Result has 310 places, 435 transitions, 7593 flow [2024-06-28 02:24:23,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7226, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7593, PETRI_PLACES=310, PETRI_TRANSITIONS=435} [2024-06-28 02:24:23,315 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 269 predicate places. [2024-06-28 02:24:23,315 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 435 transitions, 7593 flow [2024-06-28 02:24:23,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:23,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:23,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:23,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:24:23,315 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:23,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1130695297, now seen corresponding path program 9 times [2024-06-28 02:24:23,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:23,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519943470] [2024-06-28 02:24:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:23,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:23,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:23,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519943470] [2024-06-28 02:24:23,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519943470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:23,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:23,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:23,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783948640] [2024-06-28 02:24:23,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:23,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:23,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:23,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:23,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:23,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:23,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 435 transitions, 7593 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:23,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:23,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:23,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:24,648 INFO L124 PetriNetUnfolderBase]: 4108/6957 cut-off events. [2024-06-28 02:24:24,648 INFO L125 PetriNetUnfolderBase]: For 847391/847394 co-relation queries the response was YES. [2024-06-28 02:24:24,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51609 conditions, 6957 events. 4108/6957 cut-off events. For 847391/847394 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 48872 event pairs, 1233 based on Foata normal form. 44/6999 useless extension candidates. Maximal degree in co-relation 51464. Up to 5874 conditions per place. [2024-06-28 02:24:24,744 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 321 selfloop transitions, 133 changer transitions 3/464 dead transitions. [2024-06-28 02:24:24,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 464 transitions, 8937 flow [2024-06-28 02:24:24,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 02:24:24,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.61875 [2024-06-28 02:24:24,745 INFO L175 Difference]: Start difference. First operand has 310 places, 435 transitions, 7593 flow. Second operand 8 states and 198 transitions. [2024-06-28 02:24:24,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 464 transitions, 8937 flow [2024-06-28 02:24:26,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 464 transitions, 8386 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:26,662 INFO L231 Difference]: Finished difference. Result has 311 places, 434 transitions, 7300 flow [2024-06-28 02:24:26,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7042, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7300, PETRI_PLACES=311, PETRI_TRANSITIONS=434} [2024-06-28 02:24:26,663 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-28 02:24:26,663 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 434 transitions, 7300 flow [2024-06-28 02:24:26,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:26,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:26,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:26,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:24:26,663 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:26,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:26,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1655449759, now seen corresponding path program 6 times [2024-06-28 02:24:26,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:26,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317086611] [2024-06-28 02:24:26,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:26,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:26,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:26,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317086611] [2024-06-28 02:24:26,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317086611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:26,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:26,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:26,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953943116] [2024-06-28 02:24:26,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:26,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:26,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:26,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:26,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:26,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:26,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 434 transitions, 7300 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:26,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:26,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:26,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:28,087 INFO L124 PetriNetUnfolderBase]: 4095/6910 cut-off events. [2024-06-28 02:24:28,087 INFO L125 PetriNetUnfolderBase]: For 707232/707232 co-relation queries the response was YES. [2024-06-28 02:24:28,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50423 conditions, 6910 events. 4095/6910 cut-off events. For 707232/707232 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 48390 event pairs, 1244 based on Foata normal form. 1/6904 useless extension candidates. Maximal degree in co-relation 50278. Up to 5791 conditions per place. [2024-06-28 02:24:28,195 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 209 selfloop transitions, 241 changer transitions 0/457 dead transitions. [2024-06-28 02:24:28,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 457 transitions, 8966 flow [2024-06-28 02:24:28,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:28,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:24:28,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 02:24:28,196 INFO L175 Difference]: Start difference. First operand has 311 places, 434 transitions, 7300 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:24:28,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 457 transitions, 8966 flow [2024-06-28 02:24:29,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 457 transitions, 8635 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:29,908 INFO L231 Difference]: Finished difference. Result has 312 places, 435 transitions, 7483 flow [2024-06-28 02:24:29,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6969, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7483, PETRI_PLACES=312, PETRI_TRANSITIONS=435} [2024-06-28 02:24:29,909 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 271 predicate places. [2024-06-28 02:24:29,909 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 435 transitions, 7483 flow [2024-06-28 02:24:29,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:29,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:29,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:29,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:24:29,910 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:29,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash 359290027, now seen corresponding path program 7 times [2024-06-28 02:24:29,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:29,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802729973] [2024-06-28 02:24:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:29,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:29,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:29,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802729973] [2024-06-28 02:24:29,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802729973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:29,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:29,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:29,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346934208] [2024-06-28 02:24:29,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:29,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:29,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:29,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:29,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:30,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:30,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 435 transitions, 7483 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:30,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:30,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:30,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:31,177 INFO L124 PetriNetUnfolderBase]: 3965/6696 cut-off events. [2024-06-28 02:24:31,178 INFO L125 PetriNetUnfolderBase]: For 615588/615588 co-relation queries the response was YES. [2024-06-28 02:24:31,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47391 conditions, 6696 events. 3965/6696 cut-off events. For 615588/615588 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 46596 event pairs, 1186 based on Foata normal form. 1/6690 useless extension candidates. Maximal degree in co-relation 47245. Up to 5584 conditions per place. [2024-06-28 02:24:31,267 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 208 selfloop transitions, 241 changer transitions 0/456 dead transitions. [2024-06-28 02:24:31,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 456 transitions, 8953 flow [2024-06-28 02:24:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:24:31,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-28 02:24:31,268 INFO L175 Difference]: Start difference. First operand has 312 places, 435 transitions, 7483 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:24:31,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 456 transitions, 8953 flow [2024-06-28 02:24:32,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 456 transitions, 8384 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 02:24:32,988 INFO L231 Difference]: Finished difference. Result has 315 places, 435 transitions, 7402 flow [2024-06-28 02:24:32,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6914, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7402, PETRI_PLACES=315, PETRI_TRANSITIONS=435} [2024-06-28 02:24:32,988 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 274 predicate places. [2024-06-28 02:24:32,988 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 435 transitions, 7402 flow [2024-06-28 02:24:32,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:32,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:32,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:32,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:24:32,989 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:32,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:32,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1245253967, now seen corresponding path program 8 times [2024-06-28 02:24:32,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:32,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383116470] [2024-06-28 02:24:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:32,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:33,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:33,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383116470] [2024-06-28 02:24:33,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383116470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:33,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:33,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:33,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715047881] [2024-06-28 02:24:33,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:33,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:33,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:33,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:33,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 435 transitions, 7402 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:33,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:33,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:33,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:34,383 INFO L124 PetriNetUnfolderBase]: 3970/6708 cut-off events. [2024-06-28 02:24:34,383 INFO L125 PetriNetUnfolderBase]: For 627070/627070 co-relation queries the response was YES. [2024-06-28 02:24:34,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47535 conditions, 6708 events. 3970/6708 cut-off events. For 627070/627070 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 46775 event pairs, 1190 based on Foata normal form. 1/6702 useless extension candidates. Maximal degree in co-relation 47388. Up to 5588 conditions per place. [2024-06-28 02:24:34,476 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 199 selfloop transitions, 254 changer transitions 0/460 dead transitions. [2024-06-28 02:24:34,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 460 transitions, 9132 flow [2024-06-28 02:24:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:24:34,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60625 [2024-06-28 02:24:34,479 INFO L175 Difference]: Start difference. First operand has 315 places, 435 transitions, 7402 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:24:34,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 460 transitions, 9132 flow [2024-06-28 02:24:36,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 460 transitions, 8638 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:36,269 INFO L231 Difference]: Finished difference. Result has 316 places, 438 transitions, 7490 flow [2024-06-28 02:24:36,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6914, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7490, PETRI_PLACES=316, PETRI_TRANSITIONS=438} [2024-06-28 02:24:36,270 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-28 02:24:36,270 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 438 transitions, 7490 flow [2024-06-28 02:24:36,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:36,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:36,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:36,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:24:36,270 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:36,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash 852845263, now seen corresponding path program 7 times [2024-06-28 02:24:36,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:36,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759133671] [2024-06-28 02:24:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:36,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:36,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759133671] [2024-06-28 02:24:36,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759133671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:36,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:36,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:24:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398959218] [2024-06-28 02:24:36,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:36,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:24:36,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:36,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:24:36,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:24:36,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:36,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 438 transitions, 7490 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:24:36,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:36,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:36,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:37,550 INFO L124 PetriNetUnfolderBase]: 3967/6734 cut-off events. [2024-06-28 02:24:37,550 INFO L125 PetriNetUnfolderBase]: For 636828/636831 co-relation queries the response was YES. [2024-06-28 02:24:37,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47640 conditions, 6734 events. 3967/6734 cut-off events. For 636828/636831 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 47100 event pairs, 1210 based on Foata normal form. 3/6728 useless extension candidates. Maximal degree in co-relation 47492. Up to 5954 conditions per place. [2024-06-28 02:24:37,649 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 345 selfloop transitions, 101 changer transitions 0/453 dead transitions. [2024-06-28 02:24:37,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 453 transitions, 8596 flow [2024-06-28 02:24:37,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:24:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:24:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 02:24:37,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-28 02:24:37,649 INFO L175 Difference]: Start difference. First operand has 316 places, 438 transitions, 7490 flow. Second operand 7 states and 161 transitions. [2024-06-28 02:24:37,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 453 transitions, 8596 flow [2024-06-28 02:24:39,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 453 transitions, 7859 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:39,605 INFO L231 Difference]: Finished difference. Result has 315 places, 438 transitions, 6961 flow [2024-06-28 02:24:39,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6753, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6961, PETRI_PLACES=315, PETRI_TRANSITIONS=438} [2024-06-28 02:24:39,606 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 274 predicate places. [2024-06-28 02:24:39,606 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 438 transitions, 6961 flow [2024-06-28 02:24:39,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:24:39,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:39,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:39,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:24:39,607 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:39,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:39,607 INFO L85 PathProgramCache]: Analyzing trace with hash 356337871, now seen corresponding path program 9 times [2024-06-28 02:24:39,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:39,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916162660] [2024-06-28 02:24:39,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:39,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:39,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:39,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916162660] [2024-06-28 02:24:39,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916162660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:39,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:39,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:39,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662540712] [2024-06-28 02:24:39,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:39,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:39,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:39,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:39,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:39,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 438 transitions, 6961 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:39,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:39,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:39,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:40,901 INFO L124 PetriNetUnfolderBase]: 3964/6694 cut-off events. [2024-06-28 02:24:40,901 INFO L125 PetriNetUnfolderBase]: For 642154/642154 co-relation queries the response was YES. [2024-06-28 02:24:40,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46839 conditions, 6694 events. 3964/6694 cut-off events. For 642154/642154 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 46540 event pairs, 1192 based on Foata normal form. 1/6688 useless extension candidates. Maximal degree in co-relation 46691. Up to 5584 conditions per place. [2024-06-28 02:24:41,022 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 198 selfloop transitions, 254 changer transitions 0/459 dead transitions. [2024-06-28 02:24:41,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 459 transitions, 8455 flow [2024-06-28 02:24:41,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 02:24:41,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.603125 [2024-06-28 02:24:41,024 INFO L175 Difference]: Start difference. First operand has 315 places, 438 transitions, 6961 flow. Second operand 8 states and 193 transitions. [2024-06-28 02:24:41,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 459 transitions, 8455 flow [2024-06-28 02:24:42,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 459 transitions, 8274 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 02:24:42,968 INFO L231 Difference]: Finished difference. Result has 319 places, 438 transitions, 7294 flow [2024-06-28 02:24:42,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6780, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7294, PETRI_PLACES=319, PETRI_TRANSITIONS=438} [2024-06-28 02:24:42,968 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2024-06-28 02:24:42,968 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 438 transitions, 7294 flow [2024-06-28 02:24:42,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:42,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:42,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:42,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:24:42,969 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:42,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:42,969 INFO L85 PathProgramCache]: Analyzing trace with hash -249593023, now seen corresponding path program 8 times [2024-06-28 02:24:42,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:42,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692961857] [2024-06-28 02:24:42,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:42,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:43,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:43,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692961857] [2024-06-28 02:24:43,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692961857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:43,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:43,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:24:43,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594069883] [2024-06-28 02:24:43,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:43,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:24:43,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:24:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:24:43,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:43,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 438 transitions, 7294 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:43,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:43,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:43,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:44,244 INFO L124 PetriNetUnfolderBase]: 3966/6726 cut-off events. [2024-06-28 02:24:44,244 INFO L125 PetriNetUnfolderBase]: For 655693/655696 co-relation queries the response was YES. [2024-06-28 02:24:44,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47436 conditions, 6726 events. 3966/6726 cut-off events. For 655693/655696 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 46957 event pairs, 1150 based on Foata normal form. 4/6728 useless extension candidates. Maximal degree in co-relation 47286. Up to 5973 conditions per place. [2024-06-28 02:24:44,340 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 363 selfloop transitions, 97 changer transitions 0/467 dead transitions. [2024-06-28 02:24:44,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 467 transitions, 8540 flow [2024-06-28 02:24:44,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:24:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:24:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-28 02:24:44,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 02:24:44,341 INFO L175 Difference]: Start difference. First operand has 319 places, 438 transitions, 7294 flow. Second operand 6 states and 160 transitions. [2024-06-28 02:24:44,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 467 transitions, 8540 flow [2024-06-28 02:24:46,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 467 transitions, 8016 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:46,481 INFO L231 Difference]: Finished difference. Result has 318 places, 441 transitions, 7056 flow [2024-06-28 02:24:46,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6776, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7056, PETRI_PLACES=318, PETRI_TRANSITIONS=441} [2024-06-28 02:24:46,481 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 277 predicate places. [2024-06-28 02:24:46,482 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 441 transitions, 7056 flow [2024-06-28 02:24:46,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:46,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:46,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:46,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:24:46,482 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:46,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:46,482 INFO L85 PathProgramCache]: Analyzing trace with hash 361070671, now seen corresponding path program 10 times [2024-06-28 02:24:46,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:46,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915310872] [2024-06-28 02:24:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:46,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:46,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915310872] [2024-06-28 02:24:46,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915310872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:46,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:46,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:46,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145052196] [2024-06-28 02:24:46,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:46,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:46,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:46,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:46,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:46,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:46,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 441 transitions, 7056 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:46,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:46,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:46,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:47,797 INFO L124 PetriNetUnfolderBase]: 3963/6721 cut-off events. [2024-06-28 02:24:47,797 INFO L125 PetriNetUnfolderBase]: For 658754/658754 co-relation queries the response was YES. [2024-06-28 02:24:47,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46986 conditions, 6721 events. 3963/6721 cut-off events. For 658754/658754 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 46883 event pairs, 1140 based on Foata normal form. 1/6721 useless extension candidates. Maximal degree in co-relation 46835. Up to 6193 conditions per place. [2024-06-28 02:24:47,893 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 398 selfloop transitions, 53 changer transitions 0/458 dead transitions. [2024-06-28 02:24:47,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 458 transitions, 8182 flow [2024-06-28 02:24:47,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-06-28 02:24:47,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5472222222222223 [2024-06-28 02:24:47,894 INFO L175 Difference]: Start difference. First operand has 318 places, 441 transitions, 7056 flow. Second operand 9 states and 197 transitions. [2024-06-28 02:24:47,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 458 transitions, 8182 flow [2024-06-28 02:24:50,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 458 transitions, 7952 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 02:24:50,156 INFO L231 Difference]: Finished difference. Result has 322 places, 441 transitions, 6940 flow [2024-06-28 02:24:50,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6828, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6940, PETRI_PLACES=322, PETRI_TRANSITIONS=441} [2024-06-28 02:24:50,156 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-28 02:24:50,156 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 441 transitions, 6940 flow [2024-06-28 02:24:50,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:50,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:50,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:50,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:24:50,156 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:50,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:50,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1543463573, now seen corresponding path program 9 times [2024-06-28 02:24:50,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:50,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438198997] [2024-06-28 02:24:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:50,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:50,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:50,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438198997] [2024-06-28 02:24:50,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438198997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:50,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:50,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:24:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580319400] [2024-06-28 02:24:50,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:50,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:24:50,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:50,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:24:50,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:24:50,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:50,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 441 transitions, 6940 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:50,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:50,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:50,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:51,460 INFO L124 PetriNetUnfolderBase]: 3957/6714 cut-off events. [2024-06-28 02:24:51,460 INFO L125 PetriNetUnfolderBase]: For 653584/653587 co-relation queries the response was YES. [2024-06-28 02:24:51,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46481 conditions, 6714 events. 3957/6714 cut-off events. For 653584/653587 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 46923 event pairs, 1149 based on Foata normal form. 4/6716 useless extension candidates. Maximal degree in co-relation 46330. Up to 5963 conditions per place. [2024-06-28 02:24:51,539 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 360 selfloop transitions, 96 changer transitions 0/463 dead transitions. [2024-06-28 02:24:51,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 463 transitions, 7908 flow [2024-06-28 02:24:51,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:24:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:24:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 02:24:51,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-28 02:24:51,540 INFO L175 Difference]: Start difference. First operand has 322 places, 441 transitions, 6940 flow. Second operand 6 states and 155 transitions. [2024-06-28 02:24:51,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 463 transitions, 7908 flow [2024-06-28 02:24:54,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 463 transitions, 7768 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:54,123 INFO L231 Difference]: Finished difference. Result has 320 places, 441 transitions, 7008 flow [2024-06-28 02:24:54,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6800, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7008, PETRI_PLACES=320, PETRI_TRANSITIONS=441} [2024-06-28 02:24:54,123 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-28 02:24:54,123 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 441 transitions, 7008 flow [2024-06-28 02:24:54,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:54,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:54,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:54,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:24:54,124 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:54,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash 353308891, now seen corresponding path program 11 times [2024-06-28 02:24:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:54,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897996460] [2024-06-28 02:24:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:54,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897996460] [2024-06-28 02:24:54,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897996460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:54,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:54,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:54,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265132665] [2024-06-28 02:24:54,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:54,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:54,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:54,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:54,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:54,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:54,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 441 transitions, 7008 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:54,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:54,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:54,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:55,411 INFO L124 PetriNetUnfolderBase]: 3954/6709 cut-off events. [2024-06-28 02:24:55,411 INFO L125 PetriNetUnfolderBase]: For 659309/659309 co-relation queries the response was YES. [2024-06-28 02:24:55,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46680 conditions, 6709 events. 3954/6709 cut-off events. For 659309/659309 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46898 event pairs, 1140 based on Foata normal form. 1/6709 useless extension candidates. Maximal degree in co-relation 46528. Up to 6182 conditions per place. [2024-06-28 02:24:55,506 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 397 selfloop transitions, 53 changer transitions 0/457 dead transitions. [2024-06-28 02:24:55,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 457 transitions, 7946 flow [2024-06-28 02:24:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:55,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 196 transitions. [2024-06-28 02:24:55,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-28 02:24:55,507 INFO L175 Difference]: Start difference. First operand has 320 places, 441 transitions, 7008 flow. Second operand 9 states and 196 transitions. [2024-06-28 02:24:55,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 457 transitions, 7946 flow [2024-06-28 02:24:57,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 457 transitions, 7645 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:57,955 INFO L231 Difference]: Finished difference. Result has 322 places, 441 transitions, 6819 flow [2024-06-28 02:24:57,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6707, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6819, PETRI_PLACES=322, PETRI_TRANSITIONS=441} [2024-06-28 02:24:57,955 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-28 02:24:57,955 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 441 transitions, 6819 flow [2024-06-28 02:24:57,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:57,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:57,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:57,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:24:57,956 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:57,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash -679316659, now seen corresponding path program 12 times [2024-06-28 02:24:57,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:57,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364524162] [2024-06-28 02:24:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:57,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:58,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:58,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364524162] [2024-06-28 02:24:58,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364524162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:58,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:58,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:58,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679832641] [2024-06-28 02:24:58,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:58,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:58,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:58,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:58,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:58,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:24:58,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 441 transitions, 6819 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:58,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:58,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:24:58,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:59,264 INFO L124 PetriNetUnfolderBase]: 3964/6728 cut-off events. [2024-06-28 02:24:59,264 INFO L125 PetriNetUnfolderBase]: For 647830/647833 co-relation queries the response was YES. [2024-06-28 02:24:59,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46301 conditions, 6728 events. 3964/6728 cut-off events. For 647830/647833 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 47108 event pairs, 1149 based on Foata normal form. 4/6730 useless extension candidates. Maximal degree in co-relation 46149. Up to 5849 conditions per place. [2024-06-28 02:24:59,358 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 322 selfloop transitions, 142 changer transitions 0/471 dead transitions. [2024-06-28 02:24:59,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 471 transitions, 8264 flow [2024-06-28 02:24:59,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:59,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:24:59,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-06-28 02:24:59,359 INFO L175 Difference]: Start difference. First operand has 322 places, 441 transitions, 6819 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:24:59,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 471 transitions, 8264 flow [2024-06-28 02:25:02,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 471 transitions, 8136 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:02,059 INFO L231 Difference]: Finished difference. Result has 322 places, 445 transitions, 7069 flow [2024-06-28 02:25:02,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6691, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7069, PETRI_PLACES=322, PETRI_TRANSITIONS=445} [2024-06-28 02:25:02,060 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-28 02:25:02,060 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 445 transitions, 7069 flow [2024-06-28 02:25:02,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:02,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:02,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:02,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:25:02,060 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:02,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:02,061 INFO L85 PathProgramCache]: Analyzing trace with hash 317440363, now seen corresponding path program 13 times [2024-06-28 02:25:02,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:02,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647364985] [2024-06-28 02:25:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:02,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:02,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:02,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647364985] [2024-06-28 02:25:02,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647364985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:02,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:02,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:02,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449397884] [2024-06-28 02:25:02,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:02,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:02,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:02,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:02,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:02,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:25:02,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 445 transitions, 7069 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:02,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:02,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:25:02,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:03,364 INFO L124 PetriNetUnfolderBase]: 3969/6736 cut-off events. [2024-06-28 02:25:03,364 INFO L125 PetriNetUnfolderBase]: For 658204/658204 co-relation queries the response was YES. [2024-06-28 02:25:03,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46869 conditions, 6736 events. 3969/6736 cut-off events. For 658204/658204 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 47117 event pairs, 1140 based on Foata normal form. 1/6736 useless extension candidates. Maximal degree in co-relation 46716. Up to 5853 conditions per place. [2024-06-28 02:25:03,461 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 315 selfloop transitions, 157 changer transitions 0/479 dead transitions. [2024-06-28 02:25:03,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 479 transitions, 8718 flow [2024-06-28 02:25:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:25:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:25:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-28 02:25:03,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-06-28 02:25:03,462 INFO L175 Difference]: Start difference. First operand has 322 places, 445 transitions, 7069 flow. Second operand 9 states and 219 transitions. [2024-06-28 02:25:03,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 479 transitions, 8718 flow [2024-06-28 02:25:06,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 479 transitions, 8394 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 02:25:06,267 INFO L231 Difference]: Finished difference. Result has 325 places, 448 transitions, 7140 flow [2024-06-28 02:25:06,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6749, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7140, PETRI_PLACES=325, PETRI_TRANSITIONS=448} [2024-06-28 02:25:06,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 284 predicate places. [2024-06-28 02:25:06,267 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 448 transitions, 7140 flow [2024-06-28 02:25:06,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:06,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:06,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:06,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:25:06,268 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:06,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:06,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1130818429, now seen corresponding path program 14 times [2024-06-28 02:25:06,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:06,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176646074] [2024-06-28 02:25:06,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:06,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:06,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:06,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176646074] [2024-06-28 02:25:06,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176646074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:06,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:06,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:06,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598114749] [2024-06-28 02:25:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:06,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:06,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:06,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:06,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:25:06,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 448 transitions, 7140 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:06,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:06,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:25:06,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:07,574 INFO L124 PetriNetUnfolderBase]: 3971/6742 cut-off events. [2024-06-28 02:25:07,575 INFO L125 PetriNetUnfolderBase]: For 671903/671906 co-relation queries the response was YES. [2024-06-28 02:25:07,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46951 conditions, 6742 events. 3971/6742 cut-off events. For 671903/671906 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 47176 event pairs, 1149 based on Foata normal form. 4/6744 useless extension candidates. Maximal degree in co-relation 46797. Up to 5857 conditions per place. [2024-06-28 02:25:07,676 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 328 selfloop transitions, 141 changer transitions 0/476 dead transitions. [2024-06-28 02:25:07,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 476 transitions, 8773 flow [2024-06-28 02:25:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:25:07,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:25:07,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 02:25:07,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-06-28 02:25:07,677 INFO L175 Difference]: Start difference. First operand has 325 places, 448 transitions, 7140 flow. Second operand 9 states and 213 transitions. [2024-06-28 02:25:07,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 476 transitions, 8773 flow [2024-06-28 02:25:10,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 476 transitions, 8478 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 02:25:10,700 INFO L231 Difference]: Finished difference. Result has 327 places, 451 transitions, 7211 flow [2024-06-28 02:25:10,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6857, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7211, PETRI_PLACES=327, PETRI_TRANSITIONS=451} [2024-06-28 02:25:10,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-28 02:25:10,700 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 451 transitions, 7211 flow [2024-06-28 02:25:10,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:10,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:10,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:10,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:25:10,701 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:10,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1967628913, now seen corresponding path program 15 times [2024-06-28 02:25:10,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:10,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060495138] [2024-06-28 02:25:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:10,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:10,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:10,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060495138] [2024-06-28 02:25:10,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060495138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:10,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:10,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:10,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038032882] [2024-06-28 02:25:10,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:10,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:10,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:10,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:10,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:10,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:25:10,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 451 transitions, 7211 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:10,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:10,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:25:10,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:12,132 INFO L124 PetriNetUnfolderBase]: 3968/6737 cut-off events. [2024-06-28 02:25:12,133 INFO L125 PetriNetUnfolderBase]: For 663509/663509 co-relation queries the response was YES. [2024-06-28 02:25:12,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46778 conditions, 6737 events. 3968/6737 cut-off events. For 663509/663509 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 47143 event pairs, 1140 based on Foata normal form. 1/6737 useless extension candidates. Maximal degree in co-relation 46624. Up to 5855 conditions per place. [2024-06-28 02:25:12,213 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 308 selfloop transitions, 165 changer transitions 0/480 dead transitions. [2024-06-28 02:25:12,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 480 transitions, 8417 flow [2024-06-28 02:25:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:25:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:25:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-28 02:25:12,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-06-28 02:25:12,214 INFO L175 Difference]: Start difference. First operand has 327 places, 451 transitions, 7211 flow. Second operand 9 states and 218 transitions. [2024-06-28 02:25:12,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 480 transitions, 8417 flow [2024-06-28 02:25:15,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 480 transitions, 8033 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 02:25:15,480 INFO L231 Difference]: Finished difference. Result has 329 places, 451 transitions, 7167 flow [2024-06-28 02:25:15,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6827, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7167, PETRI_PLACES=329, PETRI_TRANSITIONS=451} [2024-06-28 02:25:15,480 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-28 02:25:15,480 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 451 transitions, 7167 flow [2024-06-28 02:25:15,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:15,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:15,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:15,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:25:15,481 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:15,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:15,481 INFO L85 PathProgramCache]: Analyzing trace with hash 630609733, now seen corresponding path program 2 times [2024-06-28 02:25:15,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:15,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195575055] [2024-06-28 02:25:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:15,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:15,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:15,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195575055] [2024-06-28 02:25:15,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195575055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:15,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:15,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:15,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535002107] [2024-06-28 02:25:15,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:15,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:15,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:15,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:15,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:15,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:25:15,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 451 transitions, 7167 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:15,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:15,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:25:15,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:16,881 INFO L124 PetriNetUnfolderBase]: 4263/7251 cut-off events. [2024-06-28 02:25:16,881 INFO L125 PetriNetUnfolderBase]: For 958651/958654 co-relation queries the response was YES. [2024-06-28 02:25:16,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51887 conditions, 7251 events. 4263/7251 cut-off events. For 958651/958654 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 51419 event pairs, 980 based on Foata normal form. 44/7293 useless extension candidates. Maximal degree in co-relation 51732. Up to 5547 conditions per place. [2024-06-28 02:25:16,985 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 379 selfloop transitions, 110 changer transitions 0/496 dead transitions. [2024-06-28 02:25:16,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 496 transitions, 8613 flow [2024-06-28 02:25:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:25:16,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:25:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-28 02:25:16,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-06-28 02:25:16,986 INFO L175 Difference]: Start difference. First operand has 329 places, 451 transitions, 7167 flow. Second operand 7 states and 190 transitions. [2024-06-28 02:25:16,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 496 transitions, 8613 flow [2024-06-28 02:25:20,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 496 transitions, 8159 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 02:25:20,257 INFO L231 Difference]: Finished difference. Result has 327 places, 457 transitions, 7128 flow [2024-06-28 02:25:20,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6719, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7128, PETRI_PLACES=327, PETRI_TRANSITIONS=457} [2024-06-28 02:25:20,258 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-28 02:25:20,258 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 457 transitions, 7128 flow [2024-06-28 02:25:20,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:20,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:20,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:20,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:25:20,258 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:20,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1073438533, now seen corresponding path program 3 times [2024-06-28 02:25:20,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:20,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441246231] [2024-06-28 02:25:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:20,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:20,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:20,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441246231] [2024-06-28 02:25:20,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441246231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:20,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:20,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:20,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371950421] [2024-06-28 02:25:20,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:20,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:20,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:20,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:25:20,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 457 transitions, 7128 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:20,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:20,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:25:20,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:21,828 INFO L124 PetriNetUnfolderBase]: 4771/8135 cut-off events. [2024-06-28 02:25:21,829 INFO L125 PetriNetUnfolderBase]: For 1218145/1218148 co-relation queries the response was YES. [2024-06-28 02:25:21,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62221 conditions, 8135 events. 4771/8135 cut-off events. For 1218145/1218148 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 58924 event pairs, 1118 based on Foata normal form. 44/8177 useless extension candidates. Maximal degree in co-relation 62066. Up to 4357 conditions per place. [2024-06-28 02:25:21,954 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 388 selfloop transitions, 114 changer transitions 0/509 dead transitions. [2024-06-28 02:25:21,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 509 transitions, 8888 flow [2024-06-28 02:25:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:25:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:25:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-28 02:25:21,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6892857142857143 [2024-06-28 02:25:21,955 INFO L175 Difference]: Start difference. First operand has 327 places, 457 transitions, 7128 flow. Second operand 7 states and 193 transitions. [2024-06-28 02:25:21,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 509 transitions, 8888 flow [2024-06-28 02:25:26,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 509 transitions, 8684 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 02:25:26,150 INFO L231 Difference]: Finished difference. Result has 332 places, 465 transitions, 7449 flow [2024-06-28 02:25:26,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6932, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7449, PETRI_PLACES=332, PETRI_TRANSITIONS=465} [2024-06-28 02:25:26,150 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-28 02:25:26,150 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 465 transitions, 7449 flow [2024-06-28 02:25:26,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:26,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:26,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:26,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:25:26,151 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:26,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:26,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1131095011, now seen corresponding path program 4 times [2024-06-28 02:25:26,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:26,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295542145] [2024-06-28 02:25:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:26,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:26,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:26,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295542145] [2024-06-28 02:25:26,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295542145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:26,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:26,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:26,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942118755] [2024-06-28 02:25:26,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:26,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:26,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:26,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:25:26,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 465 transitions, 7449 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:26,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:26,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:25:26,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:27,920 INFO L124 PetriNetUnfolderBase]: 4954/8486 cut-off events. [2024-06-28 02:25:27,920 INFO L125 PetriNetUnfolderBase]: For 1242462/1242465 co-relation queries the response was YES. [2024-06-28 02:25:28,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65283 conditions, 8486 events. 4954/8486 cut-off events. For 1242462/1242465 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 62738 event pairs, 1568 based on Foata normal form. 38/8522 useless extension candidates. Maximal degree in co-relation 65125. Up to 6677 conditions per place. [2024-06-28 02:25:28,031 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 354 selfloop transitions, 143 changer transitions 0/504 dead transitions. [2024-06-28 02:25:28,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 504 transitions, 9225 flow [2024-06-28 02:25:28,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:25:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:25:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 02:25:28,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.634375 [2024-06-28 02:25:28,031 INFO L175 Difference]: Start difference. First operand has 332 places, 465 transitions, 7449 flow. Second operand 8 states and 203 transitions. [2024-06-28 02:25:28,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 504 transitions, 9225 flow [2024-06-28 02:25:31,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 504 transitions, 9033 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-28 02:25:31,921 INFO L231 Difference]: Finished difference. Result has 338 places, 468 transitions, 7670 flow [2024-06-28 02:25:31,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7267, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7670, PETRI_PLACES=338, PETRI_TRANSITIONS=468} [2024-06-28 02:25:31,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-06-28 02:25:31,921 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 468 transitions, 7670 flow [2024-06-28 02:25:31,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:31,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:31,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:31,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:25:31,922 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:31,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash 267633169, now seen corresponding path program 1 times [2024-06-28 02:25:31,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:31,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078223519] [2024-06-28 02:25:31,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:31,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:31,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:31,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078223519] [2024-06-28 02:25:31,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078223519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:31,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:31,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:31,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525985753] [2024-06-28 02:25:31,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:31,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:31,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:31,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:32,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:25:32,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 468 transitions, 7670 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:32,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:32,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:25:32,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:33,921 INFO L124 PetriNetUnfolderBase]: 5235/8958 cut-off events. [2024-06-28 02:25:33,921 INFO L125 PetriNetUnfolderBase]: For 1406608/1406608 co-relation queries the response was YES. [2024-06-28 02:25:34,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70530 conditions, 8958 events. 5235/8958 cut-off events. For 1406608/1406608 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 67246 event pairs, 1657 based on Foata normal form. 36/8987 useless extension candidates. Maximal degree in co-relation 70370. Up to 6372 conditions per place. [2024-06-28 02:25:34,027 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 211 selfloop transitions, 285 changer transitions 7/510 dead transitions. [2024-06-28 02:25:34,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 510 transitions, 9292 flow [2024-06-28 02:25:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:25:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:25:34,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 02:25:34,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.646875 [2024-06-28 02:25:34,028 INFO L175 Difference]: Start difference. First operand has 338 places, 468 transitions, 7670 flow. Second operand 8 states and 207 transitions. [2024-06-28 02:25:34,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 510 transitions, 9292 flow [2024-06-28 02:25:39,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 510 transitions, 9044 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 02:25:39,284 INFO L231 Difference]: Finished difference. Result has 342 places, 470 transitions, 8053 flow [2024-06-28 02:25:39,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7422, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8053, PETRI_PLACES=342, PETRI_TRANSITIONS=470} [2024-06-28 02:25:39,284 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-28 02:25:39,284 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 470 transitions, 8053 flow [2024-06-28 02:25:39,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:39,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:39,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:39,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:25:39,285 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:39,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:39,285 INFO L85 PathProgramCache]: Analyzing trace with hash -814893757, now seen corresponding path program 2 times [2024-06-28 02:25:39,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:39,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779642910] [2024-06-28 02:25:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:39,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:39,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779642910] [2024-06-28 02:25:39,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779642910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:39,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:39,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:39,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055019770] [2024-06-28 02:25:39,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:39,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:39,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:39,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:39,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:39,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:25:39,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 470 transitions, 8053 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:39,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:39,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:25:39,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:41,299 INFO L124 PetriNetUnfolderBase]: 5512/9405 cut-off events. [2024-06-28 02:25:41,299 INFO L125 PetriNetUnfolderBase]: For 1627945/1627945 co-relation queries the response was YES. [2024-06-28 02:25:41,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77363 conditions, 9405 events. 5512/9405 cut-off events. For 1627945/1627945 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 70961 event pairs, 1983 based on Foata normal form. 36/9434 useless extension candidates. Maximal degree in co-relation 77201. Up to 7574 conditions per place. [2024-06-28 02:25:41,671 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 224 selfloop transitions, 271 changer transitions 4/506 dead transitions. [2024-06-28 02:25:41,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 506 transitions, 9671 flow [2024-06-28 02:25:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:25:41,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:25:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 02:25:41,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-06-28 02:25:41,672 INFO L175 Difference]: Start difference. First operand has 342 places, 470 transitions, 8053 flow. Second operand 8 states and 202 transitions. [2024-06-28 02:25:41,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 506 transitions, 9671 flow [2024-06-28 02:25:46,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 506 transitions, 8898 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 02:25:46,399 INFO L231 Difference]: Finished difference. Result has 344 places, 473 transitions, 7934 flow [2024-06-28 02:25:46,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7312, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7934, PETRI_PLACES=344, PETRI_TRANSITIONS=473} [2024-06-28 02:25:46,400 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-28 02:25:46,400 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 473 transitions, 7934 flow [2024-06-28 02:25:46,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:46,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:46,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:46,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:25:46,401 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:46,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:46,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1244829329, now seen corresponding path program 3 times [2024-06-28 02:25:46,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:46,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862149339] [2024-06-28 02:25:46,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:46,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:46,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:46,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862149339] [2024-06-28 02:25:46,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862149339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:46,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:46,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:46,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472940026] [2024-06-28 02:25:46,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:46,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:46,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:46,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:25:46,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 473 transitions, 7934 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:46,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:46,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:25:46,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:48,632 INFO L124 PetriNetUnfolderBase]: 5395/9230 cut-off events. [2024-06-28 02:25:48,632 INFO L125 PetriNetUnfolderBase]: For 1488440/1488440 co-relation queries the response was YES. [2024-06-28 02:25:48,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71880 conditions, 9230 events. 5395/9230 cut-off events. For 1488440/1488440 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 69637 event pairs, 1982 based on Foata normal form. 42/9265 useless extension candidates. Maximal degree in co-relation 71718. Up to 7736 conditions per place. [2024-06-28 02:25:48,752 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 222 selfloop transitions, 266 changer transitions 3/498 dead transitions. [2024-06-28 02:25:48,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 498 transitions, 9188 flow [2024-06-28 02:25:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:25:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:25:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:25:48,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-06-28 02:25:48,753 INFO L175 Difference]: Start difference. First operand has 344 places, 473 transitions, 7934 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:25:48,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 498 transitions, 9188 flow [2024-06-28 02:25:53,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 498 transitions, 8767 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 02:25:53,597 INFO L231 Difference]: Finished difference. Result has 348 places, 472 transitions, 8039 flow [2024-06-28 02:25:53,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7513, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8039, PETRI_PLACES=348, PETRI_TRANSITIONS=472} [2024-06-28 02:25:53,598 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 307 predicate places. [2024-06-28 02:25:53,598 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 472 transitions, 8039 flow [2024-06-28 02:25:53,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:53,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:53,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:53,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:25:53,598 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:53,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:53,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1535686913, now seen corresponding path program 4 times [2024-06-28 02:25:53,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:53,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487788514] [2024-06-28 02:25:53,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:53,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:53,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:53,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487788514] [2024-06-28 02:25:53,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487788514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:53,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:53,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:53,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091952993] [2024-06-28 02:25:53,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:53,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:53,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:53,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:53,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:53,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:25:53,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 472 transitions, 8039 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:53,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:53,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:25:53,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:55,717 INFO L124 PetriNetUnfolderBase]: 5441/9340 cut-off events. [2024-06-28 02:25:55,717 INFO L125 PetriNetUnfolderBase]: For 1393217/1393217 co-relation queries the response was YES. [2024-06-28 02:25:55,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72949 conditions, 9340 events. 5441/9340 cut-off events. For 1393217/1393217 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 70829 event pairs, 1907 based on Foata normal form. 16/9355 useless extension candidates. Maximal degree in co-relation 72785. Up to 8551 conditions per place. [2024-06-28 02:25:55,853 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 432 selfloop transitions, 55 changer transitions 0/494 dead transitions. [2024-06-28 02:25:55,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 494 transitions, 9125 flow [2024-06-28 02:25:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:25:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:25:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-28 02:25:55,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527777777777778 [2024-06-28 02:25:55,854 INFO L175 Difference]: Start difference. First operand has 348 places, 472 transitions, 8039 flow. Second operand 9 states and 199 transitions. [2024-06-28 02:25:55,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 494 transitions, 9125 flow [2024-06-28 02:26:00,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 494 transitions, 8585 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 02:26:00,779 INFO L231 Difference]: Finished difference. Result has 350 places, 474 transitions, 7669 flow [2024-06-28 02:26:00,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7499, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7669, PETRI_PLACES=350, PETRI_TRANSITIONS=474} [2024-06-28 02:26:00,780 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2024-06-28 02:26:00,780 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 474 transitions, 7669 flow [2024-06-28 02:26:00,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:00,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:00,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:26:00,780 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:00,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:00,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1965918225, now seen corresponding path program 5 times [2024-06-28 02:26:00,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:00,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465220118] [2024-06-28 02:26:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:00,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:00,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465220118] [2024-06-28 02:26:00,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465220118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:00,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:00,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:00,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359869331] [2024-06-28 02:26:00,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:00,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:00,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:00,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:00,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:00,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:26:00,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 474 transitions, 7669 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:00,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:00,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:26:00,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:02,998 INFO L124 PetriNetUnfolderBase]: 5527/9474 cut-off events. [2024-06-28 02:26:02,998 INFO L125 PetriNetUnfolderBase]: For 1444494/1444494 co-relation queries the response was YES. [2024-06-28 02:26:03,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74344 conditions, 9474 events. 5527/9474 cut-off events. For 1444494/1444494 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 71879 event pairs, 1899 based on Foata normal form. 12/9485 useless extension candidates. Maximal degree in co-relation 74179. Up to 8511 conditions per place. [2024-06-28 02:26:03,134 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 432 selfloop transitions, 62 changer transitions 0/501 dead transitions. [2024-06-28 02:26:03,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 501 transitions, 9017 flow [2024-06-28 02:26:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:26:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:26:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-28 02:26:03,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611111111111111 [2024-06-28 02:26:03,135 INFO L175 Difference]: Start difference. First operand has 350 places, 474 transitions, 7669 flow. Second operand 9 states and 202 transitions. [2024-06-28 02:26:03,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 501 transitions, 9017 flow [2024-06-28 02:26:08,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 501 transitions, 8877 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:26:08,900 INFO L231 Difference]: Finished difference. Result has 352 places, 477 transitions, 7746 flow [2024-06-28 02:26:08,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7529, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7746, PETRI_PLACES=352, PETRI_TRANSITIONS=477} [2024-06-28 02:26:08,900 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-28 02:26:08,900 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 477 transitions, 7746 flow [2024-06-28 02:26:08,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:08,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:08,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:08,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:26:08,901 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:08,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:08,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1960192773, now seen corresponding path program 1 times [2024-06-28 02:26:08,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:08,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506042646] [2024-06-28 02:26:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:08,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:08,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:08,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506042646] [2024-06-28 02:26:08,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506042646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:08,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:08,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:08,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357015304] [2024-06-28 02:26:08,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:08,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:08,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:08,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:08,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:09,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:26:09,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 477 transitions, 7746 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:09,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:09,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:26:09,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:11,157 INFO L124 PetriNetUnfolderBase]: 5692/9699 cut-off events. [2024-06-28 02:26:11,157 INFO L125 PetriNetUnfolderBase]: For 1572529/1572529 co-relation queries the response was YES. [2024-06-28 02:26:11,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78384 conditions, 9699 events. 5692/9699 cut-off events. For 1572529/1572529 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 73406 event pairs, 1933 based on Foata normal form. 12/9710 useless extension candidates. Maximal degree in co-relation 78218. Up to 8757 conditions per place. [2024-06-28 02:26:11,303 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 461 selfloop transitions, 39 changer transitions 0/507 dead transitions. [2024-06-28 02:26:11,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 507 transitions, 9175 flow [2024-06-28 02:26:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:26:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:26:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-28 02:26:11,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527777777777778 [2024-06-28 02:26:11,304 INFO L175 Difference]: Start difference. First operand has 352 places, 477 transitions, 7746 flow. Second operand 9 states and 199 transitions. [2024-06-28 02:26:11,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 507 transitions, 9175 flow [2024-06-28 02:26:17,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 507 transitions, 9069 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 02:26:17,792 INFO L231 Difference]: Finished difference. Result has 357 places, 483 transitions, 7904 flow [2024-06-28 02:26:17,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7640, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7904, PETRI_PLACES=357, PETRI_TRANSITIONS=483} [2024-06-28 02:26:17,792 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-28 02:26:17,792 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 483 transitions, 7904 flow [2024-06-28 02:26:17,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:17,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:17,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:17,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:26:17,793 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:17,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1967619985, now seen corresponding path program 6 times [2024-06-28 02:26:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501707297] [2024-06-28 02:26:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:17,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:17,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:17,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501707297] [2024-06-28 02:26:17,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501707297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:17,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:17,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:17,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794489300] [2024-06-28 02:26:17,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:17,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:17,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:17,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:17,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:17,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:26:17,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 483 transitions, 7904 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:17,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:17,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:26:17,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:20,258 INFO L124 PetriNetUnfolderBase]: 5811/9940 cut-off events. [2024-06-28 02:26:20,258 INFO L125 PetriNetUnfolderBase]: For 1745912/1745912 co-relation queries the response was YES. [2024-06-28 02:26:20,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79744 conditions, 9940 events. 5811/9940 cut-off events. For 1745912/1745912 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 75975 event pairs, 2027 based on Foata normal form. 42/9981 useless extension candidates. Maximal degree in co-relation 79575. Up to 8592 conditions per place. [2024-06-28 02:26:20,396 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 343 selfloop transitions, 167 changer transitions 3/520 dead transitions. [2024-06-28 02:26:20,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 520 transitions, 9294 flow [2024-06-28 02:26:20,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:26:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:26:20,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 02:26:20,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6194444444444445 [2024-06-28 02:26:20,397 INFO L175 Difference]: Start difference. First operand has 357 places, 483 transitions, 7904 flow. Second operand 9 states and 223 transitions. [2024-06-28 02:26:20,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 520 transitions, 9294 flow [2024-06-28 02:26:26,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 520 transitions, 9185 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 02:26:26,204 INFO L231 Difference]: Finished difference. Result has 362 places, 484 transitions, 8184 flow [2024-06-28 02:26:26,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7795, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8184, PETRI_PLACES=362, PETRI_TRANSITIONS=484} [2024-06-28 02:26:26,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 321 predicate places. [2024-06-28 02:26:26,204 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 484 transitions, 8184 flow [2024-06-28 02:26:26,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:26,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:26,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:26,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 02:26:26,205 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:26,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:26,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1967767855, now seen corresponding path program 7 times [2024-06-28 02:26:26,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:26,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974331843] [2024-06-28 02:26:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:26,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:26,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:26,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974331843] [2024-06-28 02:26:26,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974331843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:26,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:26,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:26,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154910731] [2024-06-28 02:26:26,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:26,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:26,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:26,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:26,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:26,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:26:26,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 484 transitions, 8184 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:26,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:26,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:26:26,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:28,648 INFO L124 PetriNetUnfolderBase]: 6049/10354 cut-off events. [2024-06-28 02:26:28,648 INFO L125 PetriNetUnfolderBase]: For 1894820/1894820 co-relation queries the response was YES. [2024-06-28 02:26:28,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84722 conditions, 10354 events. 6049/10354 cut-off events. For 1894820/1894820 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 79817 event pairs, 1903 based on Foata normal form. 36/10389 useless extension candidates. Maximal degree in co-relation 84552. Up to 8039 conditions per place. [2024-06-28 02:26:28,925 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 337 selfloop transitions, 183 changer transitions 4/531 dead transitions. [2024-06-28 02:26:28,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 531 transitions, 9854 flow [2024-06-28 02:26:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:26:28,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:26:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 02:26:28,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-06-28 02:26:28,926 INFO L175 Difference]: Start difference. First operand has 362 places, 484 transitions, 8184 flow. Second operand 9 states and 232 transitions. [2024-06-28 02:26:28,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 531 transitions, 9854 flow [2024-06-28 02:26:37,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 531 transitions, 9566 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 02:26:37,380 INFO L231 Difference]: Finished difference. Result has 365 places, 485 transitions, 8305 flow [2024-06-28 02:26:37,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7896, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8305, PETRI_PLACES=365, PETRI_TRANSITIONS=485} [2024-06-28 02:26:37,381 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-28 02:26:37,381 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 485 transitions, 8305 flow [2024-06-28 02:26:37,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:37,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:37,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:37,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 02:26:37,382 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:37,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:37,382 INFO L85 PathProgramCache]: Analyzing trace with hash 807925951, now seen corresponding path program 2 times [2024-06-28 02:26:37,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:37,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310558126] [2024-06-28 02:26:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:37,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:37,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:37,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310558126] [2024-06-28 02:26:37,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310558126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:37,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:37,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:37,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812810039] [2024-06-28 02:26:37,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:37,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:37,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:37,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:37,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:26:37,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 485 transitions, 8305 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:37,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:37,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:26:37,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:39,958 INFO L124 PetriNetUnfolderBase]: 6301/10772 cut-off events. [2024-06-28 02:26:39,958 INFO L125 PetriNetUnfolderBase]: For 2069176/2069176 co-relation queries the response was YES. [2024-06-28 02:26:40,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89784 conditions, 10772 events. 6301/10772 cut-off events. For 2069176/2069176 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 83555 event pairs, 1864 based on Foata normal form. 42/10809 useless extension candidates. Maximal degree in co-relation 89613. Up to 8516 conditions per place. [2024-06-28 02:26:40,145 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 401 selfloop transitions, 128 changer transitions 0/536 dead transitions. [2024-06-28 02:26:40,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 536 transitions, 9907 flow [2024-06-28 02:26:40,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:26:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:26:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 02:26:40,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.665625 [2024-06-28 02:26:40,146 INFO L175 Difference]: Start difference. First operand has 365 places, 485 transitions, 8305 flow. Second operand 8 states and 213 transitions. [2024-06-28 02:26:40,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 536 transitions, 9907 flow [2024-06-28 02:26:48,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 536 transitions, 9548 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 02:26:48,191 INFO L231 Difference]: Finished difference. Result has 368 places, 493 transitions, 8480 flow [2024-06-28 02:26:48,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7952, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8480, PETRI_PLACES=368, PETRI_TRANSITIONS=493} [2024-06-28 02:26:48,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-28 02:26:48,191 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 493 transitions, 8480 flow [2024-06-28 02:26:48,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:48,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:48,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:48,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 02:26:48,192 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:48,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:48,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1073623231, now seen corresponding path program 3 times [2024-06-28 02:26:48,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:48,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444724951] [2024-06-28 02:26:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:48,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:48,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:48,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444724951] [2024-06-28 02:26:48,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444724951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:48,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:48,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:48,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834578944] [2024-06-28 02:26:48,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:48,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:48,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:48,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:48,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:48,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:26:48,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 493 transitions, 8480 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:48,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:48,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:26:48,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:50,803 INFO L124 PetriNetUnfolderBase]: 6399/10993 cut-off events. [2024-06-28 02:26:50,803 INFO L125 PetriNetUnfolderBase]: For 1995402/1995405 co-relation queries the response was YES. [2024-06-28 02:26:50,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89786 conditions, 10993 events. 6399/10993 cut-off events. For 1995402/1995405 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 85340 event pairs, 1819 based on Foata normal form. 44/11035 useless extension candidates. Maximal degree in co-relation 89613. Up to 6224 conditions per place. [2024-06-28 02:26:50,966 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 417 selfloop transitions, 114 changer transitions 0/538 dead transitions. [2024-06-28 02:26:50,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 538 transitions, 10172 flow [2024-06-28 02:26:50,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:26:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:26:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-28 02:26:50,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6892857142857143 [2024-06-28 02:26:50,967 INFO L175 Difference]: Start difference. First operand has 368 places, 493 transitions, 8480 flow. Second operand 7 states and 193 transitions. [2024-06-28 02:26:50,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 538 transitions, 10172 flow [2024-06-28 02:26:58,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 538 transitions, 9896 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 02:26:58,399 INFO L231 Difference]: Finished difference. Result has 369 places, 495 transitions, 8510 flow [2024-06-28 02:26:58,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8214, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8510, PETRI_PLACES=369, PETRI_TRANSITIONS=495} [2024-06-28 02:26:58,399 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-28 02:26:58,399 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 495 transitions, 8510 flow [2024-06-28 02:26:58,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:58,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:58,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:58,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 02:26:58,400 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:58,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:58,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1969236474, now seen corresponding path program 1 times [2024-06-28 02:26:58,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:58,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812602925] [2024-06-28 02:26:58,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:58,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:58,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:58,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812602925] [2024-06-28 02:26:58,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812602925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:58,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:58,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:26:58,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325534600] [2024-06-28 02:26:58,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:58,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:26:58,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:58,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:26:58,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:26:58,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:26:58,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 495 transitions, 8510 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:26:58,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:58,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:26:58,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:01,023 INFO L124 PetriNetUnfolderBase]: 6466/11071 cut-off events. [2024-06-28 02:27:01,023 INFO L125 PetriNetUnfolderBase]: For 1818795/1818795 co-relation queries the response was YES. [2024-06-28 02:27:01,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90700 conditions, 11071 events. 6466/11071 cut-off events. For 1818795/1818795 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 86168 event pairs, 2143 based on Foata normal form. 2/11060 useless extension candidates. Maximal degree in co-relation 90527. Up to 9435 conditions per place. [2024-06-28 02:27:01,181 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 404 selfloop transitions, 125 changer transitions 0/536 dead transitions. [2024-06-28 02:27:01,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 536 transitions, 10307 flow [2024-06-28 02:27:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:27:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:27:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:27:01,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6321428571428571 [2024-06-28 02:27:01,182 INFO L175 Difference]: Start difference. First operand has 369 places, 495 transitions, 8510 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:27:01,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 536 transitions, 10307 flow [2024-06-28 02:27:07,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 536 transitions, 10037 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 02:27:07,987 INFO L231 Difference]: Finished difference. Result has 373 places, 503 transitions, 8732 flow [2024-06-28 02:27:07,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8252, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8732, PETRI_PLACES=373, PETRI_TRANSITIONS=503} [2024-06-28 02:27:07,987 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-28 02:27:07,987 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 503 transitions, 8732 flow [2024-06-28 02:27:07,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:27:07,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:07,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:07,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 02:27:07,988 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:07,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:07,988 INFO L85 PathProgramCache]: Analyzing trace with hash 290755956, now seen corresponding path program 2 times [2024-06-28 02:27:07,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:07,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278717551] [2024-06-28 02:27:07,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:07,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:08,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:08,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278717551] [2024-06-28 02:27:08,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278717551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:08,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:08,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:27:08,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597832064] [2024-06-28 02:27:08,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:08,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:27:08,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:08,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:27:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:27:08,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:27:08,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 503 transitions, 8732 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:27:08,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:08,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:27:08,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:10,706 INFO L124 PetriNetUnfolderBase]: 6533/11180 cut-off events. [2024-06-28 02:27:10,706 INFO L125 PetriNetUnfolderBase]: For 1870413/1870413 co-relation queries the response was YES. [2024-06-28 02:27:10,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91992 conditions, 11180 events. 6533/11180 cut-off events. For 1870413/1870413 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 87094 event pairs, 2120 based on Foata normal form. 2/11169 useless extension candidates. Maximal degree in co-relation 91818. Up to 9479 conditions per place. [2024-06-28 02:27:10,868 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 404 selfloop transitions, 129 changer transitions 1/541 dead transitions. [2024-06-28 02:27:10,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 541 transitions, 10505 flow [2024-06-28 02:27:10,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:27:10,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:27:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:27:10,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-06-28 02:27:10,869 INFO L175 Difference]: Start difference. First operand has 373 places, 503 transitions, 8732 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:27:10,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 541 transitions, 10505 flow [2024-06-28 02:27:18,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 541 transitions, 10294 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-28 02:27:18,569 INFO L231 Difference]: Finished difference. Result has 378 places, 507 transitions, 8876 flow [2024-06-28 02:27:18,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8547, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8876, PETRI_PLACES=378, PETRI_TRANSITIONS=507} [2024-06-28 02:27:18,569 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-28 02:27:18,569 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 507 transitions, 8876 flow [2024-06-28 02:27:18,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:27:18,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:18,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:18,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 02:27:18,570 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:18,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:18,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2027328924, now seen corresponding path program 3 times [2024-06-28 02:27:18,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:18,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540288865] [2024-06-28 02:27:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:18,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540288865] [2024-06-28 02:27:18,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540288865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:18,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:18,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:27:18,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923269462] [2024-06-28 02:27:18,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:18,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:27:18,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:18,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:27:18,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:27:18,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:27:18,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 507 transitions, 8876 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:27:18,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:18,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:27:18,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:21,449 INFO L124 PetriNetUnfolderBase]: 6528/11195 cut-off events. [2024-06-28 02:27:21,449 INFO L125 PetriNetUnfolderBase]: For 1897125/1897125 co-relation queries the response was YES. [2024-06-28 02:27:21,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92492 conditions, 11195 events. 6528/11195 cut-off events. For 1897125/1897125 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 87821 event pairs, 2448 based on Foata normal form. 2/11179 useless extension candidates. Maximal degree in co-relation 92316. Up to 10095 conditions per place. [2024-06-28 02:27:21,607 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 414 selfloop transitions, 115 changer transitions 0/536 dead transitions. [2024-06-28 02:27:21,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 536 transitions, 10252 flow [2024-06-28 02:27:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:27:21,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:27:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:27:21,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-06-28 02:27:21,608 INFO L175 Difference]: Start difference. First operand has 378 places, 507 transitions, 8876 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:27:21,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 536 transitions, 10252 flow [2024-06-28 02:27:29,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 536 transitions, 10025 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 02:27:29,581 INFO L231 Difference]: Finished difference. Result has 383 places, 510 transitions, 8950 flow [2024-06-28 02:27:29,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8654, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8950, PETRI_PLACES=383, PETRI_TRANSITIONS=510} [2024-06-28 02:27:29,582 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-28 02:27:29,582 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 510 transitions, 8950 flow [2024-06-28 02:27:29,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:27:29,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:29,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:29,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 02:27:29,582 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:29,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:29,583 INFO L85 PathProgramCache]: Analyzing trace with hash 428378618, now seen corresponding path program 4 times [2024-06-28 02:27:29,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:29,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586449754] [2024-06-28 02:27:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:29,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:29,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:29,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586449754] [2024-06-28 02:27:29,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586449754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:29,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:29,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:27:29,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497944831] [2024-06-28 02:27:29,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:29,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:27:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:29,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:27:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:27:29,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:27:29,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 510 transitions, 8950 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:27:29,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:29,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:27:29,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:32,227 INFO L124 PetriNetUnfolderBase]: 6536/11215 cut-off events. [2024-06-28 02:27:32,228 INFO L125 PetriNetUnfolderBase]: For 1933254/1933254 co-relation queries the response was YES. [2024-06-28 02:27:32,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92856 conditions, 11215 events. 6536/11215 cut-off events. For 1933254/1933254 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 88113 event pairs, 2458 based on Foata normal form. 2/11207 useless extension candidates. Maximal degree in co-relation 92678. Up to 10147 conditions per place. [2024-06-28 02:27:32,386 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 416 selfloop transitions, 110 changer transitions 0/533 dead transitions. [2024-06-28 02:27:32,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 533 transitions, 10104 flow [2024-06-28 02:27:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:27:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:27:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:27:32,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 02:27:32,387 INFO L175 Difference]: Start difference. First operand has 383 places, 510 transitions, 8950 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:27:32,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 533 transitions, 10104 flow [2024-06-28 02:27:39,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 533 transitions, 9813 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 02:27:39,962 INFO L231 Difference]: Finished difference. Result has 386 places, 512 transitions, 8938 flow [2024-06-28 02:27:39,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8679, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8938, PETRI_PLACES=386, PETRI_TRANSITIONS=512} [2024-06-28 02:27:39,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-28 02:27:39,962 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 512 transitions, 8938 flow [2024-06-28 02:27:39,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:27:39,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:39,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:39,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 02:27:39,963 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:39,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:39,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1621691932, now seen corresponding path program 5 times [2024-06-28 02:27:39,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:39,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444415110] [2024-06-28 02:27:39,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:39,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:40,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444415110] [2024-06-28 02:27:40,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444415110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:40,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:40,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:27:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488007553] [2024-06-28 02:27:40,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:40,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:27:40,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:40,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:27:40,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:27:40,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:27:40,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 512 transitions, 8938 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:27:40,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:40,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:27:40,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:42,742 INFO L124 PetriNetUnfolderBase]: 6531/11208 cut-off events. [2024-06-28 02:27:42,742 INFO L125 PetriNetUnfolderBase]: For 1957440/1957440 co-relation queries the response was YES. [2024-06-28 02:27:42,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92775 conditions, 11208 events. 6531/11208 cut-off events. For 1957440/1957440 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 88021 event pairs, 2457 based on Foata normal form. 2/11200 useless extension candidates. Maximal degree in co-relation 92596. Up to 10140 conditions per place. [2024-06-28 02:27:42,930 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 417 selfloop transitions, 106 changer transitions 0/530 dead transitions. [2024-06-28 02:27:42,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 530 transitions, 10028 flow [2024-06-28 02:27:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:27:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:27:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 02:27:42,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-06-28 02:27:42,934 INFO L175 Difference]: Start difference. First operand has 386 places, 512 transitions, 8938 flow. Second operand 7 states and 166 transitions. [2024-06-28 02:27:42,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 530 transitions, 10028 flow [2024-06-28 02:27:49,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 530 transitions, 9816 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:27:49,898 INFO L231 Difference]: Finished difference. Result has 389 places, 512 transitions, 8943 flow [2024-06-28 02:27:49,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8726, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8943, PETRI_PLACES=389, PETRI_TRANSITIONS=512} [2024-06-28 02:27:49,899 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-28 02:27:49,899 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 512 transitions, 8943 flow [2024-06-28 02:27:49,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:27:49,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:49,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:49,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 02:27:49,900 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:49,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1621631482, now seen corresponding path program 6 times [2024-06-28 02:27:49,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:49,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721555797] [2024-06-28 02:27:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:49,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:49,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:49,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721555797] [2024-06-28 02:27:49,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721555797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:49,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:49,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:27:49,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172985120] [2024-06-28 02:27:49,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:49,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:27:49,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:49,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:27:49,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:27:50,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:27:50,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 512 transitions, 8943 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:27:50,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:50,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:27:50,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:52,554 INFO L124 PetriNetUnfolderBase]: 6572/11245 cut-off events. [2024-06-28 02:27:52,555 INFO L125 PetriNetUnfolderBase]: For 2025658/2025658 co-relation queries the response was YES. [2024-06-28 02:27:52,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94150 conditions, 11245 events. 6572/11245 cut-off events. For 2025658/2025658 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 88073 event pairs, 2452 based on Foata normal form. 2/11225 useless extension candidates. Maximal degree in co-relation 93970. Up to 10069 conditions per place. [2024-06-28 02:27:52,730 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 416 selfloop transitions, 113 changer transitions 1/537 dead transitions. [2024-06-28 02:27:52,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 537 transitions, 10339 flow [2024-06-28 02:27:52,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:27:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:27:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 02:27:52,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6107142857142858 [2024-06-28 02:27:52,731 INFO L175 Difference]: Start difference. First operand has 389 places, 512 transitions, 8943 flow. Second operand 7 states and 171 transitions. [2024-06-28 02:27:52,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 537 transitions, 10339 flow [2024-06-28 02:27:59,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 537 transitions, 10112 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:27:59,905 INFO L231 Difference]: Finished difference. Result has 392 places, 513 transitions, 8984 flow [2024-06-28 02:27:59,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8716, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8984, PETRI_PLACES=392, PETRI_TRANSITIONS=513} [2024-06-28 02:27:59,906 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-28 02:27:59,906 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 513 transitions, 8984 flow [2024-06-28 02:27:59,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:27:59,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:59,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:59,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 02:27:59,906 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:59,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:59,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1569462032, now seen corresponding path program 1 times [2024-06-28 02:27:59,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:59,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646687821] [2024-06-28 02:27:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:59,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:59,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:59,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646687821] [2024-06-28 02:27:59,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646687821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:59,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:59,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:27:59,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536099704] [2024-06-28 02:27:59,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:59,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:27:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:59,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:27:59,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:28:00,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:28:00,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 513 transitions, 8984 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:00,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:00,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:28:00,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:02,715 INFO L124 PetriNetUnfolderBase]: 6608/11332 cut-off events. [2024-06-28 02:28:02,715 INFO L125 PetriNetUnfolderBase]: For 2107753/2107753 co-relation queries the response was YES. [2024-06-28 02:28:02,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94980 conditions, 11332 events. 6608/11332 cut-off events. For 2107753/2107753 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 89064 event pairs, 2484 based on Foata normal form. 10/11332 useless extension candidates. Maximal degree in co-relation 94798. Up to 10227 conditions per place. [2024-06-28 02:28:02,880 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 422 selfloop transitions, 111 changer transitions 0/540 dead transitions. [2024-06-28 02:28:02,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 540 transitions, 10158 flow [2024-06-28 02:28:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:28:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:28:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:28:02,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-28 02:28:02,881 INFO L175 Difference]: Start difference. First operand has 392 places, 513 transitions, 8984 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:28:02,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 540 transitions, 10158 flow [2024-06-28 02:28:11,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 540 transitions, 9936 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 02:28:11,359 INFO L231 Difference]: Finished difference. Result has 396 places, 515 transitions, 9030 flow [2024-06-28 02:28:11,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8762, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9030, PETRI_PLACES=396, PETRI_TRANSITIONS=515} [2024-06-28 02:28:11,359 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-28 02:28:11,359 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 515 transitions, 9030 flow [2024-06-28 02:28:11,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:11,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:11,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:11,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 02:28:11,360 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:28:11,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:11,360 INFO L85 PathProgramCache]: Analyzing trace with hash -78291717, now seen corresponding path program 1 times [2024-06-28 02:28:11,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:11,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097509698] [2024-06-28 02:28:11,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:11,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:11,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:11,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097509698] [2024-06-28 02:28:11,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097509698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:11,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:11,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:28:11,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650044795] [2024-06-28 02:28:11,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:11,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:28:11,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:11,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:28:11,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:28:11,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:28:11,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 515 transitions, 9030 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:11,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:11,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:28:11,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:14,008 INFO L124 PetriNetUnfolderBase]: 6653/11425 cut-off events. [2024-06-28 02:28:14,008 INFO L125 PetriNetUnfolderBase]: For 2126009/2126012 co-relation queries the response was YES. [2024-06-28 02:28:14,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96457 conditions, 11425 events. 6653/11425 cut-off events. For 2126009/2126012 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 89986 event pairs, 2558 based on Foata normal form. 3/11419 useless extension candidates. Maximal degree in co-relation 96274. Up to 9952 conditions per place. [2024-06-28 02:28:14,170 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 299 selfloop transitions, 247 changer transitions 0/553 dead transitions. [2024-06-28 02:28:14,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 553 transitions, 11156 flow [2024-06-28 02:28:14,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:28:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:28:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:28:14,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 02:28:14,171 INFO L175 Difference]: Start difference. First operand has 396 places, 515 transitions, 9030 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:28:14,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 553 transitions, 11156 flow [2024-06-28 02:28:22,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 553 transitions, 10914 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:28:22,384 INFO L231 Difference]: Finished difference. Result has 397 places, 533 transitions, 9632 flow [2024-06-28 02:28:22,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8788, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9632, PETRI_PLACES=397, PETRI_TRANSITIONS=533} [2024-06-28 02:28:22,384 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 356 predicate places. [2024-06-28 02:28:22,384 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 533 transitions, 9632 flow [2024-06-28 02:28:22,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:22,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:22,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:22,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 02:28:22,385 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:28:22,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:22,385 INFO L85 PathProgramCache]: Analyzing trace with hash -839622825, now seen corresponding path program 2 times [2024-06-28 02:28:22,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:22,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866525770] [2024-06-28 02:28:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:22,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:22,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:22,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866525770] [2024-06-28 02:28:22,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866525770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:22,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:22,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:28:22,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715810855] [2024-06-28 02:28:22,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:22,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:28:22,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:22,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:28:22,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:28:22,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:28:22,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 533 transitions, 9632 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:22,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:22,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:28:22,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:25,089 INFO L124 PetriNetUnfolderBase]: 6650/11418 cut-off events. [2024-06-28 02:28:25,089 INFO L125 PetriNetUnfolderBase]: For 2159895/2159906 co-relation queries the response was YES. [2024-06-28 02:28:25,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96973 conditions, 11418 events. 6650/11418 cut-off events. For 2159895/2159906 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 89870 event pairs, 2544 based on Foata normal form. 11/11421 useless extension candidates. Maximal degree in co-relation 96789. Up to 9949 conditions per place. [2024-06-28 02:28:25,244 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 295 selfloop transitions, 253 changer transitions 0/555 dead transitions. [2024-06-28 02:28:25,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 555 transitions, 11214 flow [2024-06-28 02:28:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:28:25,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:28:25,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 02:28:25,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-06-28 02:28:25,245 INFO L175 Difference]: Start difference. First operand has 397 places, 533 transitions, 9632 flow. Second operand 7 states and 170 transitions. [2024-06-28 02:28:25,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 555 transitions, 11214 flow [2024-06-28 02:28:33,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 555 transitions, 10885 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 02:28:33,437 INFO L231 Difference]: Finished difference. Result has 401 places, 533 transitions, 9815 flow [2024-06-28 02:28:33,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9303, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9815, PETRI_PLACES=401, PETRI_TRANSITIONS=533} [2024-06-28 02:28:33,438 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 360 predicate places. [2024-06-28 02:28:33,438 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 533 transitions, 9815 flow [2024-06-28 02:28:33,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:33,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:33,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:33,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 02:28:33,438 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:28:33,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:33,438 INFO L85 PathProgramCache]: Analyzing trace with hash -835898175, now seen corresponding path program 3 times [2024-06-28 02:28:33,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:33,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932580403] [2024-06-28 02:28:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:33,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:33,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932580403] [2024-06-28 02:28:33,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932580403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:33,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:33,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:28:33,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426416147] [2024-06-28 02:28:33,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:33,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:28:33,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:33,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:28:33,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:28:33,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:28:33,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 533 transitions, 9815 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:33,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:33,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:28:33,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:36,267 INFO L124 PetriNetUnfolderBase]: 6655/11394 cut-off events. [2024-06-28 02:28:36,268 INFO L125 PetriNetUnfolderBase]: For 2201276/2201276 co-relation queries the response was YES. [2024-06-28 02:28:36,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97496 conditions, 11394 events. 6655/11394 cut-off events. For 2201276/2201276 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 89468 event pairs, 2517 based on Foata normal form. 1/11385 useless extension candidates. Maximal degree in co-relation 97311. Up to 9955 conditions per place. [2024-06-28 02:28:36,426 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 285 selfloop transitions, 270 changer transitions 0/562 dead transitions. [2024-06-28 02:28:36,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 562 transitions, 11473 flow [2024-06-28 02:28:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:28:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:28:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:28:36,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-06-28 02:28:36,427 INFO L175 Difference]: Start difference. First operand has 401 places, 533 transitions, 9815 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:28:36,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 562 transitions, 11473 flow [2024-06-28 02:28:44,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 562 transitions, 10518 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 02:28:44,932 INFO L231 Difference]: Finished difference. Result has 402 places, 536 transitions, 9454 flow [2024-06-28 02:28:44,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8872, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9454, PETRI_PLACES=402, PETRI_TRANSITIONS=536} [2024-06-28 02:28:44,933 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-28 02:28:44,933 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 536 transitions, 9454 flow [2024-06-28 02:28:44,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:44,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:44,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:44,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 02:28:44,933 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:28:44,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:44,933 INFO L85 PathProgramCache]: Analyzing trace with hash 932845203, now seen corresponding path program 4 times [2024-06-28 02:28:44,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:44,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157714929] [2024-06-28 02:28:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:44,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:44,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:44,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157714929] [2024-06-28 02:28:44,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157714929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:44,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:44,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:28:44,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130412727] [2024-06-28 02:28:44,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:44,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:28:44,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:44,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:28:44,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:28:45,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:28:45,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 536 transitions, 9454 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:45,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:45,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:28:45,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:47,664 INFO L124 PetriNetUnfolderBase]: 6660/11431 cut-off events. [2024-06-28 02:28:47,664 INFO L125 PetriNetUnfolderBase]: For 2235781/2235784 co-relation queries the response was YES. [2024-06-28 02:28:47,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97718 conditions, 11431 events. 6660/11431 cut-off events. For 2235781/2235784 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 90010 event pairs, 2544 based on Foata normal form. 3/11425 useless extension candidates. Maximal degree in co-relation 97534. Up to 9961 conditions per place. [2024-06-28 02:28:47,814 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 313 selfloop transitions, 236 changer transitions 0/556 dead transitions. [2024-06-28 02:28:47,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 556 transitions, 11314 flow [2024-06-28 02:28:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:28:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:28:47,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 02:28:47,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964285714285714 [2024-06-28 02:28:47,815 INFO L175 Difference]: Start difference. First operand has 402 places, 536 transitions, 9454 flow. Second operand 7 states and 167 transitions. [2024-06-28 02:28:47,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 556 transitions, 11314 flow [2024-06-28 02:28:56,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 556 transitions, 10927 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:28:56,993 INFO L231 Difference]: Finished difference. Result has 404 places, 539 transitions, 9607 flow [2024-06-28 02:28:56,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9070, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9607, PETRI_PLACES=404, PETRI_TRANSITIONS=539} [2024-06-28 02:28:56,993 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-28 02:28:56,993 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 539 transitions, 9607 flow [2024-06-28 02:28:56,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:56,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:56,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:56,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 02:28:56,994 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:28:56,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash -835903755, now seen corresponding path program 5 times [2024-06-28 02:28:56,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:56,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897930061] [2024-06-28 02:28:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:56,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:57,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:57,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897930061] [2024-06-28 02:28:57,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897930061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:57,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:57,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:28:57,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072170094] [2024-06-28 02:28:57,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:57,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:28:57,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:28:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:28:57,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:28:57,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 539 transitions, 9607 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:57,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:57,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:28:57,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:59,911 INFO L124 PetriNetUnfolderBase]: 6665/11417 cut-off events. [2024-06-28 02:28:59,911 INFO L125 PetriNetUnfolderBase]: For 2275953/2275953 co-relation queries the response was YES. [2024-06-28 02:29:00,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98088 conditions, 11417 events. 6665/11417 cut-off events. For 2275953/2275953 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 89714 event pairs, 2519 based on Foata normal form. 1/11408 useless extension candidates. Maximal degree in co-relation 97902. Up to 9967 conditions per place. [2024-06-28 02:29:00,092 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 285 selfloop transitions, 276 changer transitions 0/568 dead transitions. [2024-06-28 02:29:00,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 568 transitions, 11286 flow [2024-06-28 02:29:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:29:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:29:00,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:29:00,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615625 [2024-06-28 02:29:00,093 INFO L175 Difference]: Start difference. First operand has 404 places, 539 transitions, 9607 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:29:00,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 568 transitions, 11286 flow [2024-06-28 02:29:10,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 568 transitions, 10595 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 02:29:10,057 INFO L231 Difference]: Finished difference. Result has 406 places, 542 transitions, 9523 flow [2024-06-28 02:29:10,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8922, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9523, PETRI_PLACES=406, PETRI_TRANSITIONS=542} [2024-06-28 02:29:10,058 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-28 02:29:10,058 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 542 transitions, 9523 flow [2024-06-28 02:29:10,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:10,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:10,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:10,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 02:29:10,058 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:29:10,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:10,058 INFO L85 PathProgramCache]: Analyzing trace with hash 932834043, now seen corresponding path program 6 times [2024-06-28 02:29:10,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:10,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110519110] [2024-06-28 02:29:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:10,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:10,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:10,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110519110] [2024-06-28 02:29:10,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110519110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:10,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:10,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:29:10,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482702512] [2024-06-28 02:29:10,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:10,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:29:10,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:10,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:29:10,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:29:10,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:29:10,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 542 transitions, 9523 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:10,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:10,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:29:10,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:12,802 INFO L124 PetriNetUnfolderBase]: 6662/11444 cut-off events. [2024-06-28 02:29:12,802 INFO L125 PetriNetUnfolderBase]: For 2307510/2307513 co-relation queries the response was YES. [2024-06-28 02:29:12,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98156 conditions, 11444 events. 6662/11444 cut-off events. For 2307510/2307513 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 90158 event pairs, 2548 based on Foata normal form. 3/11438 useless extension candidates. Maximal degree in co-relation 97971. Up to 9964 conditions per place. [2024-06-28 02:29:12,971 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 314 selfloop transitions, 237 changer transitions 0/558 dead transitions. [2024-06-28 02:29:12,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 558 transitions, 11111 flow [2024-06-28 02:29:12,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:29:12,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:29:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 02:29:12,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-06-28 02:29:12,972 INFO L175 Difference]: Start difference. First operand has 406 places, 542 transitions, 9523 flow. Second operand 7 states and 166 transitions. [2024-06-28 02:29:12,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 558 transitions, 11111 flow [2024-06-28 02:29:23,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 558 transitions, 10535 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:29:23,124 INFO L231 Difference]: Finished difference. Result has 407 places, 542 transitions, 9427 flow [2024-06-28 02:29:23,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8947, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9427, PETRI_PLACES=407, PETRI_TRANSITIONS=542} [2024-06-28 02:29:23,125 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-28 02:29:23,125 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 542 transitions, 9427 flow [2024-06-28 02:29:23,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:23,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:23,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:23,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 02:29:23,125 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:29:23,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash 444588014, now seen corresponding path program 1 times [2024-06-28 02:29:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:23,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143858998] [2024-06-28 02:29:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:23,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:23,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143858998] [2024-06-28 02:29:23,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143858998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:23,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:23,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:29:23,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182687641] [2024-06-28 02:29:23,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:23,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:29:23,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:29:23,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:29:23,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:29:23,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 542 transitions, 9427 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:23,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:23,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:29:23,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:25,865 INFO L124 PetriNetUnfolderBase]: 6698/11461 cut-off events. [2024-06-28 02:29:25,865 INFO L125 PetriNetUnfolderBase]: For 2404501/2404501 co-relation queries the response was YES. [2024-06-28 02:29:26,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98725 conditions, 11461 events. 6698/11461 cut-off events. For 2404501/2404501 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 89913 event pairs, 2518 based on Foata normal form. 10/11461 useless extension candidates. Maximal degree in co-relation 98539. Up to 9982 conditions per place. [2024-06-28 02:29:26,224 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 300 selfloop transitions, 264 changer transitions 0/571 dead transitions. [2024-06-28 02:29:26,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 571 transitions, 11134 flow [2024-06-28 02:29:26,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:29:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:29:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:29:26,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-06-28 02:29:26,224 INFO L175 Difference]: Start difference. First operand has 407 places, 542 transitions, 9427 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:29:26,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 571 transitions, 11134 flow [2024-06-28 02:29:37,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 571 transitions, 10647 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:29:37,708 INFO L231 Difference]: Finished difference. Result has 409 places, 544 transitions, 9525 flow [2024-06-28 02:29:37,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8940, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9525, PETRI_PLACES=409, PETRI_TRANSITIONS=544} [2024-06-28 02:29:37,709 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 368 predicate places. [2024-06-28 02:29:37,709 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 544 transitions, 9525 flow [2024-06-28 02:29:37,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:37,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:37,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:37,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 02:29:37,709 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:29:37,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1573902875, now seen corresponding path program 7 times [2024-06-28 02:29:37,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:37,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28145394] [2024-06-28 02:29:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:37,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:37,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:37,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28145394] [2024-06-28 02:29:37,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28145394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:37,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:37,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:29:37,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469467525] [2024-06-28 02:29:37,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:37,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:29:37,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:37,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:29:37,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:29:37,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:29:37,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 544 transitions, 9525 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:37,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:37,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:29:37,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:40,631 INFO L124 PetriNetUnfolderBase]: 6703/11476 cut-off events. [2024-06-28 02:29:40,631 INFO L125 PetriNetUnfolderBase]: For 2384990/2384990 co-relation queries the response was YES. [2024-06-28 02:29:40,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99307 conditions, 11476 events. 6703/11476 cut-off events. For 2384990/2384990 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 90221 event pairs, 2532 based on Foata normal form. 1/11467 useless extension candidates. Maximal degree in co-relation 99120. Up to 10026 conditions per place. [2024-06-28 02:29:40,812 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 306 selfloop transitions, 254 changer transitions 0/567 dead transitions. [2024-06-28 02:29:40,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 567 transitions, 11194 flow [2024-06-28 02:29:40,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:29:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:29:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:29:40,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596875 [2024-06-28 02:29:40,813 INFO L175 Difference]: Start difference. First operand has 409 places, 544 transitions, 9525 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:29:40,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 567 transitions, 11194 flow [2024-06-28 02:29:52,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 567 transitions, 10638 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:29:52,341 INFO L231 Difference]: Finished difference. Result has 411 places, 547 transitions, 9528 flow [2024-06-28 02:29:52,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8975, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9528, PETRI_PLACES=411, PETRI_TRANSITIONS=547} [2024-06-28 02:29:52,341 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-28 02:29:52,341 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 547 transitions, 9528 flow [2024-06-28 02:29:52,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:52,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:52,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:52,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 02:29:52,342 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:29:52,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:52,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1563178115, now seen corresponding path program 8 times [2024-06-28 02:29:52,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:52,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182282389] [2024-06-28 02:29:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:52,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:52,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:52,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182282389] [2024-06-28 02:29:52,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182282389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:52,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:52,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:29:52,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171865260] [2024-06-28 02:29:52,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:52,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:29:52,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:52,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:29:52,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:29:52,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:29:52,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 547 transitions, 9528 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:52,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:52,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:29:52,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:55,408 INFO L124 PetriNetUnfolderBase]: 6700/11481 cut-off events. [2024-06-28 02:29:55,409 INFO L125 PetriNetUnfolderBase]: For 2421989/2421989 co-relation queries the response was YES. [2024-06-28 02:29:55,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99364 conditions, 11481 events. 6700/11481 cut-off events. For 2421989/2421989 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 90257 event pairs, 2512 based on Foata normal form. 1/11472 useless extension candidates. Maximal degree in co-relation 99176. Up to 10023 conditions per place. [2024-06-28 02:29:55,603 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 306 selfloop transitions, 257 changer transitions 0/570 dead transitions. [2024-06-28 02:29:55,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 570 transitions, 11398 flow [2024-06-28 02:29:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:29:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:29:55,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 229 transitions. [2024-06-28 02:29:55,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725 [2024-06-28 02:29:55,604 INFO L175 Difference]: Start difference. First operand has 411 places, 547 transitions, 9528 flow. Second operand 10 states and 229 transitions. [2024-06-28 02:29:55,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 570 transitions, 11398 flow [2024-06-28 02:30:05,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 570 transitions, 11055 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:30:05,777 INFO L231 Difference]: Finished difference. Result has 416 places, 547 transitions, 9705 flow [2024-06-28 02:30:05,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9185, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9705, PETRI_PLACES=416, PETRI_TRANSITIONS=547} [2024-06-28 02:30:05,778 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-28 02:30:05,778 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 547 transitions, 9705 flow [2024-06-28 02:30:05,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:05,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:05,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:05,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 02:30:05,779 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:30:05,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:05,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1569468635, now seen corresponding path program 9 times [2024-06-28 02:30:05,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:05,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809166216] [2024-06-28 02:30:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:05,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:05,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:05,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809166216] [2024-06-28 02:30:05,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809166216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:05,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:05,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:30:05,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380806710] [2024-06-28 02:30:05,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:05,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:30:05,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:05,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:30:05,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:30:05,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:30:05,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 547 transitions, 9705 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:05,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:05,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:30:05,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:08,668 INFO L124 PetriNetUnfolderBase]: 6705/11497 cut-off events. [2024-06-28 02:30:08,668 INFO L125 PetriNetUnfolderBase]: For 2464957/2464957 co-relation queries the response was YES. [2024-06-28 02:30:08,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99892 conditions, 11497 events. 6705/11497 cut-off events. For 2464957/2464957 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 90538 event pairs, 2498 based on Foata normal form. 1/11488 useless extension candidates. Maximal degree in co-relation 99702. Up to 10029 conditions per place. [2024-06-28 02:30:08,852 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 310 selfloop transitions, 255 changer transitions 0/572 dead transitions. [2024-06-28 02:30:08,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 572 transitions, 11867 flow [2024-06-28 02:30:08,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:30:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:30:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 02:30:08,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.603125 [2024-06-28 02:30:08,853 INFO L175 Difference]: Start difference. First operand has 416 places, 547 transitions, 9705 flow. Second operand 8 states and 193 transitions. [2024-06-28 02:30:08,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 572 transitions, 11867 flow [2024-06-28 02:30:21,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 572 transitions, 11155 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:30:21,663 INFO L231 Difference]: Finished difference. Result has 415 places, 550 transitions, 9561 flow [2024-06-28 02:30:21,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9002, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9561, PETRI_PLACES=415, PETRI_TRANSITIONS=550} [2024-06-28 02:30:21,664 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 374 predicate places. [2024-06-28 02:30:21,664 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 550 transitions, 9561 flow [2024-06-28 02:30:21,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:21,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:21,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:21,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 02:30:21,665 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:30:21,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:21,665 INFO L85 PathProgramCache]: Analyzing trace with hash -159064263, now seen corresponding path program 10 times [2024-06-28 02:30:21,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:21,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886415050] [2024-06-28 02:30:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:21,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:21,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:21,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886415050] [2024-06-28 02:30:21,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886415050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:21,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:21,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:30:21,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510952864] [2024-06-28 02:30:21,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:21,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:30:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:21,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:30:21,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:30:21,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:30:21,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 550 transitions, 9561 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:21,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:21,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:30:21,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:24,601 INFO L124 PetriNetUnfolderBase]: 6702/11489 cut-off events. [2024-06-28 02:30:24,601 INFO L125 PetriNetUnfolderBase]: For 2496400/2496400 co-relation queries the response was YES. [2024-06-28 02:30:24,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99971 conditions, 11489 events. 6702/11489 cut-off events. For 2496400/2496400 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 90475 event pairs, 2496 based on Foata normal form. 1/11480 useless extension candidates. Maximal degree in co-relation 99781. Up to 10026 conditions per place. [2024-06-28 02:30:24,785 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 299 selfloop transitions, 267 changer transitions 0/573 dead transitions. [2024-06-28 02:30:24,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 573 transitions, 11449 flow [2024-06-28 02:30:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:30:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:30:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 231 transitions. [2024-06-28 02:30:24,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775 [2024-06-28 02:30:24,786 INFO L175 Difference]: Start difference. First operand has 415 places, 550 transitions, 9561 flow. Second operand 10 states and 231 transitions. [2024-06-28 02:30:24,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 573 transitions, 11449 flow [2024-06-28 02:30:35,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 573 transitions, 11011 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 02:30:35,219 INFO L231 Difference]: Finished difference. Result has 421 places, 550 transitions, 9663 flow [2024-06-28 02:30:35,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9123, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9663, PETRI_PLACES=421, PETRI_TRANSITIONS=550} [2024-06-28 02:30:35,220 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-28 02:30:35,220 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 550 transitions, 9663 flow [2024-06-28 02:30:35,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:35,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:35,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:35,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 02:30:35,220 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:30:35,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash -158880123, now seen corresponding path program 11 times [2024-06-28 02:30:35,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:35,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683682610] [2024-06-28 02:30:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:35,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:35,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:35,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683682610] [2024-06-28 02:30:35,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683682610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:35,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:35,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:30:35,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634839789] [2024-06-28 02:30:35,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:35,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:30:35,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:35,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:30:35,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:30:35,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:30:35,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 550 transitions, 9663 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:35,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:35,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:30:35,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:38,083 INFO L124 PetriNetUnfolderBase]: 6699/11489 cut-off events. [2024-06-28 02:30:38,083 INFO L125 PetriNetUnfolderBase]: For 2531598/2531598 co-relation queries the response was YES. [2024-06-28 02:30:38,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100253 conditions, 11489 events. 6699/11489 cut-off events. For 2531598/2531598 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 90460 event pairs, 2496 based on Foata normal form. 1/11480 useless extension candidates. Maximal degree in co-relation 100062. Up to 10023 conditions per place. [2024-06-28 02:30:38,271 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 311 selfloop transitions, 253 changer transitions 0/571 dead transitions. [2024-06-28 02:30:38,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 571 transitions, 11549 flow [2024-06-28 02:30:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:30:38,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:30:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:30:38,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 02:30:38,272 INFO L175 Difference]: Start difference. First operand has 421 places, 550 transitions, 9663 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:30:38,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 571 transitions, 11549 flow [2024-06-28 02:30:49,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 571 transitions, 10730 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:30:49,078 INFO L231 Difference]: Finished difference. Result has 418 places, 550 transitions, 9358 flow [2024-06-28 02:30:49,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8844, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9358, PETRI_PLACES=418, PETRI_TRANSITIONS=550} [2024-06-28 02:30:49,079 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 377 predicate places. [2024-06-28 02:30:49,079 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 550 transitions, 9358 flow [2024-06-28 02:30:49,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:49,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:49,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:30:49,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 02:30:49,080 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:30:49,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:49,080 INFO L85 PathProgramCache]: Analyzing trace with hash 677570839, now seen corresponding path program 12 times [2024-06-28 02:30:49,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:49,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32418567] [2024-06-28 02:30:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:49,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:49,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:49,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32418567] [2024-06-28 02:30:49,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32418567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:49,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:49,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:30:49,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086147745] [2024-06-28 02:30:49,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:49,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:30:49,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:30:49,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:30:49,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:30:49,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 550 transitions, 9358 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:30:49,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:49,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:30:49,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:52,034 INFO L124 PetriNetUnfolderBase]: 6696/11478 cut-off events. [2024-06-28 02:30:52,034 INFO L125 PetriNetUnfolderBase]: For 2562255/2562255 co-relation queries the response was YES. [2024-06-28 02:30:52,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100275 conditions, 11478 events. 6696/11478 cut-off events. For 2562255/2562255 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 90374 event pairs, 2515 based on Foata normal form. 1/11469 useless extension candidates. Maximal degree in co-relation 100084. Up to 10020 conditions per place. [2024-06-28 02:30:52,213 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 309 selfloop transitions, 254 changer transitions 0/570 dead transitions. [2024-06-28 02:30:52,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 570 transitions, 11008 flow [2024-06-28 02:30:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:30:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:30:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:30:52,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596875 [2024-06-28 02:30:52,214 INFO L175 Difference]: Start difference. First operand has 418 places, 550 transitions, 9358 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:30:52,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 570 transitions, 11008 flow [2024-06-28 02:31:04,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 570 transitions, 10249 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 02:31:04,573 INFO L231 Difference]: Finished difference. Result has 417 places, 550 transitions, 9116 flow [2024-06-28 02:31:04,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8599, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9116, PETRI_PLACES=417, PETRI_TRANSITIONS=550} [2024-06-28 02:31:04,573 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2024-06-28 02:31:04,573 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 550 transitions, 9116 flow [2024-06-28 02:31:04,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:04,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:04,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:04,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 02:31:04,574 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:31:04,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:04,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1136733360, now seen corresponding path program 2 times [2024-06-28 02:31:04,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:04,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539644687] [2024-06-28 02:31:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:04,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:04,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:04,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539644687] [2024-06-28 02:31:04,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539644687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:04,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:04,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:31:04,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395249175] [2024-06-28 02:31:04,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:04,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:31:04,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:04,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:31:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:31:04,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:31:04,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 550 transitions, 9116 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:04,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:04,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:31:04,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:07,539 INFO L124 PetriNetUnfolderBase]: 6686/11471 cut-off events. [2024-06-28 02:31:07,539 INFO L125 PetriNetUnfolderBase]: For 2608615/2608615 co-relation queries the response was YES. [2024-06-28 02:31:07,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99494 conditions, 11471 events. 6686/11471 cut-off events. For 2608615/2608615 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 90437 event pairs, 2458 based on Foata normal form. 10/11471 useless extension candidates. Maximal degree in co-relation 99303. Up to 10342 conditions per place. [2024-06-28 02:31:07,734 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 461 selfloop transitions, 107 changer transitions 0/575 dead transitions. [2024-06-28 02:31:07,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 575 transitions, 10358 flow [2024-06-28 02:31:07,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:31:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:31:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-28 02:31:07,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-28 02:31:07,735 INFO L175 Difference]: Start difference. First operand has 417 places, 550 transitions, 9116 flow. Second operand 9 states and 207 transitions. [2024-06-28 02:31:07,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 575 transitions, 10358 flow [2024-06-28 02:31:19,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 575 transitions, 9846 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 02:31:19,387 INFO L231 Difference]: Finished difference. Result has 418 places, 552 transitions, 8868 flow [2024-06-28 02:31:19,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8604, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8868, PETRI_PLACES=418, PETRI_TRANSITIONS=552} [2024-06-28 02:31:19,387 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 377 predicate places. [2024-06-28 02:31:19,387 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 552 transitions, 8868 flow [2024-06-28 02:31:19,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:19,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:19,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:19,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 02:31:19,388 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:31:19,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:19,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1734001102, now seen corresponding path program 2 times [2024-06-28 02:31:19,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:19,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51263645] [2024-06-28 02:31:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:19,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:19,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:19,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51263645] [2024-06-28 02:31:19,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51263645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:19,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:19,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:31:19,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770629363] [2024-06-28 02:31:19,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:19,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:31:19,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:19,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:31:19,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:31:19,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:31:19,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 552 transitions, 8868 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:19,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:19,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:31:19,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:22,289 INFO L124 PetriNetUnfolderBase]: 6722/11510 cut-off events. [2024-06-28 02:31:22,289 INFO L125 PetriNetUnfolderBase]: For 2647387/2647387 co-relation queries the response was YES. [2024-06-28 02:31:22,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99860 conditions, 11510 events. 6722/11510 cut-off events. For 2647387/2647387 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 90479 event pairs, 2532 based on Foata normal form. 10/11510 useless extension candidates. Maximal degree in co-relation 99668. Up to 10024 conditions per place. [2024-06-28 02:31:22,464 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 314 selfloop transitions, 257 changer transitions 0/578 dead transitions. [2024-06-28 02:31:22,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 578 transitions, 10617 flow [2024-06-28 02:31:22,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:31:22,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:31:22,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:31:22,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60625 [2024-06-28 02:31:22,465 INFO L175 Difference]: Start difference. First operand has 418 places, 552 transitions, 8868 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:31:22,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 578 transitions, 10617 flow [2024-06-28 02:31:35,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 578 transitions, 10379 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:31:35,314 INFO L231 Difference]: Finished difference. Result has 419 places, 554 transitions, 9205 flow [2024-06-28 02:31:35,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8630, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9205, PETRI_PLACES=419, PETRI_TRANSITIONS=554} [2024-06-28 02:31:35,314 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-28 02:31:35,315 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 554 transitions, 9205 flow [2024-06-28 02:31:35,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:35,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:35,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:35,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 02:31:35,315 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:31:35,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:35,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1104672906, now seen corresponding path program 3 times [2024-06-28 02:31:35,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:35,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002620689] [2024-06-28 02:31:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:35,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:35,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:35,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002620689] [2024-06-28 02:31:35,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002620689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:35,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:35,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:31:35,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715988058] [2024-06-28 02:31:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:35,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:31:35,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:35,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:31:35,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:31:35,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:31:35,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 554 transitions, 9205 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:35,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:35,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:31:35,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:38,227 INFO L124 PetriNetUnfolderBase]: 6758/11566 cut-off events. [2024-06-28 02:31:38,227 INFO L125 PetriNetUnfolderBase]: For 2693627/2693627 co-relation queries the response was YES. [2024-06-28 02:31:38,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101053 conditions, 11566 events. 6758/11566 cut-off events. For 2693627/2693627 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 90979 event pairs, 2538 based on Foata normal form. 10/11566 useless extension candidates. Maximal degree in co-relation 100860. Up to 10080 conditions per place. [2024-06-28 02:31:38,416 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 316 selfloop transitions, 257 changer transitions 0/580 dead transitions. [2024-06-28 02:31:38,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 580 transitions, 10966 flow [2024-06-28 02:31:38,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:31:38,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:31:38,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:31:38,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60625 [2024-06-28 02:31:38,417 INFO L175 Difference]: Start difference. First operand has 419 places, 554 transitions, 9205 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:31:38,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 580 transitions, 10966 flow [2024-06-28 02:31:50,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 580 transitions, 10426 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 02:31:50,444 INFO L231 Difference]: Finished difference. Result has 421 places, 556 transitions, 9244 flow [2024-06-28 02:31:50,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8665, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9244, PETRI_PLACES=421, PETRI_TRANSITIONS=556} [2024-06-28 02:31:50,445 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-28 02:31:50,445 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 556 transitions, 9244 flow [2024-06-28 02:31:50,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:50,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:50,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:31:50,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 02:31:50,445 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:31:50,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1113243786, now seen corresponding path program 4 times [2024-06-28 02:31:50,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:50,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854473551] [2024-06-28 02:31:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:50,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:50,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:50,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854473551] [2024-06-28 02:31:50,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854473551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:50,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:50,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:31:50,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154513342] [2024-06-28 02:31:50,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:50,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:31:50,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:50,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:31:50,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:31:50,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:31:50,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 556 transitions, 9244 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:31:50,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:50,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:31:50,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:53,398 INFO L124 PetriNetUnfolderBase]: 6748/11539 cut-off events. [2024-06-28 02:31:53,398 INFO L125 PetriNetUnfolderBase]: For 2676171/2676171 co-relation queries the response was YES. [2024-06-28 02:31:53,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100309 conditions, 11539 events. 6748/11539 cut-off events. For 2676171/2676171 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 90443 event pairs, 2508 based on Foata normal form. 10/11539 useless extension candidates. Maximal degree in co-relation 100115. Up to 9018 conditions per place. [2024-06-28 02:31:53,594 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 317 selfloop transitions, 265 changer transitions 0/589 dead transitions. [2024-06-28 02:31:53,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 589 transitions, 11313 flow [2024-06-28 02:31:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:31:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:31:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 02:31:53,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 02:31:53,594 INFO L175 Difference]: Start difference. First operand has 421 places, 556 transitions, 9244 flow. Second operand 8 states and 200 transitions. [2024-06-28 02:31:53,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 589 transitions, 11313 flow [2024-06-28 02:32:05,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 589 transitions, 10769 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:32:05,074 INFO L231 Difference]: Finished difference. Result has 423 places, 558 transitions, 9300 flow [2024-06-28 02:32:05,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8700, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9300, PETRI_PLACES=423, PETRI_TRANSITIONS=558} [2024-06-28 02:32:05,074 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-28 02:32:05,074 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 558 transitions, 9300 flow [2024-06-28 02:32:05,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:32:05,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:05,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:05,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 02:32:05,075 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:32:05,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:05,075 INFO L85 PathProgramCache]: Analyzing trace with hash -670473130, now seen corresponding path program 7 times [2024-06-28 02:32:05,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:05,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130410863] [2024-06-28 02:32:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:05,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:05,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:05,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130410863] [2024-06-28 02:32:05,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130410863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:05,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:05,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:32:05,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668825596] [2024-06-28 02:32:05,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:05,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:32:05,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:05,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:32:05,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:32:05,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:32:05,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 558 transitions, 9300 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:32:05,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:05,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:32:05,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:07,985 INFO L124 PetriNetUnfolderBase]: 6704/11470 cut-off events. [2024-06-28 02:32:07,985 INFO L125 PetriNetUnfolderBase]: For 2656138/2656141 co-relation queries the response was YES. [2024-06-28 02:32:08,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99173 conditions, 11470 events. 6704/11470 cut-off events. For 2656138/2656141 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 89999 event pairs, 2396 based on Foata normal form. 14/11473 useless extension candidates. Maximal degree in co-relation 98978. Up to 10356 conditions per place. [2024-06-28 02:32:08,169 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 477 selfloop transitions, 102 changer transitions 4/590 dead transitions. [2024-06-28 02:32:08,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 590 transitions, 10613 flow [2024-06-28 02:32:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:32:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:32:08,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 02:32:08,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-28 02:32:08,170 INFO L175 Difference]: Start difference. First operand has 423 places, 558 transitions, 9300 flow. Second operand 7 states and 182 transitions. [2024-06-28 02:32:08,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 590 transitions, 10613 flow [2024-06-28 02:32:19,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 590 transitions, 10071 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:32:19,676 INFO L231 Difference]: Finished difference. Result has 425 places, 558 transitions, 8997 flow [2024-06-28 02:32:19,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8758, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8997, PETRI_PLACES=425, PETRI_TRANSITIONS=558} [2024-06-28 02:32:19,677 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 384 predicate places. [2024-06-28 02:32:19,677 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 558 transitions, 8997 flow [2024-06-28 02:32:19,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:32:19,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:19,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:19,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 02:32:19,678 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:32:19,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:19,678 INFO L85 PathProgramCache]: Analyzing trace with hash 349222010, now seen corresponding path program 8 times [2024-06-28 02:32:19,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:19,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219100688] [2024-06-28 02:32:19,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:19,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:19,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:19,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219100688] [2024-06-28 02:32:19,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219100688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:19,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:19,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:32:19,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492830657] [2024-06-28 02:32:19,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:19,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:32:19,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:19,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:32:19,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:32:19,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:32:19,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 558 transitions, 8997 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:32:19,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:19,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:32:19,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:22,505 INFO L124 PetriNetUnfolderBase]: 6488/11082 cut-off events. [2024-06-28 02:32:22,505 INFO L125 PetriNetUnfolderBase]: For 2603123/2603126 co-relation queries the response was YES. [2024-06-28 02:32:22,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95660 conditions, 11082 events. 6488/11082 cut-off events. For 2603123/2603126 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 85854 event pairs, 1999 based on Foata normal form. 14/11094 useless extension candidates. Maximal degree in co-relation 95464. Up to 9077 conditions per place. [2024-06-28 02:32:22,692 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 468 selfloop transitions, 114 changer transitions 6/595 dead transitions. [2024-06-28 02:32:22,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 595 transitions, 10549 flow [2024-06-28 02:32:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:32:22,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:32:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 02:32:22,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2024-06-28 02:32:22,694 INFO L175 Difference]: Start difference. First operand has 425 places, 558 transitions, 8997 flow. Second operand 7 states and 188 transitions. [2024-06-28 02:32:22,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 595 transitions, 10549 flow [2024-06-28 02:32:34,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 595 transitions, 10291 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 02:32:34,933 INFO L231 Difference]: Finished difference. Result has 426 places, 554 transitions, 8922 flow [2024-06-28 02:32:34,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8741, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8922, PETRI_PLACES=426, PETRI_TRANSITIONS=554} [2024-06-28 02:32:34,933 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 385 predicate places. [2024-06-28 02:32:34,933 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 554 transitions, 8922 flow [2024-06-28 02:32:34,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:32:34,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:34,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:34,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 02:32:34,934 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:32:34,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:34,934 INFO L85 PathProgramCache]: Analyzing trace with hash 48571828, now seen corresponding path program 3 times [2024-06-28 02:32:34,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:34,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727242967] [2024-06-28 02:32:34,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:34,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:35,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:35,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727242967] [2024-06-28 02:32:35,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727242967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:35,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:35,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:32:35,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976913762] [2024-06-28 02:32:35,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:35,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:32:35,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:35,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:32:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:32:35,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:32:35,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 554 transitions, 8922 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:32:35,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:35,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:32:35,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:37,657 INFO L124 PetriNetUnfolderBase]: 6378/10900 cut-off events. [2024-06-28 02:32:37,657 INFO L125 PetriNetUnfolderBase]: For 2511194/2511194 co-relation queries the response was YES. [2024-06-28 02:32:37,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94366 conditions, 10900 events. 6378/10900 cut-off events. For 2511194/2511194 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 84600 event pairs, 2288 based on Foata normal form. 2/10893 useless extension candidates. Maximal degree in co-relation 94170. Up to 9817 conditions per place. [2024-06-28 02:32:37,824 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 456 selfloop transitions, 120 changer transitions 0/583 dead transitions. [2024-06-28 02:32:37,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 583 transitions, 10549 flow [2024-06-28 02:32:37,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:32:37,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:32:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:32:37,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-06-28 02:32:37,825 INFO L175 Difference]: Start difference. First operand has 426 places, 554 transitions, 8922 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:32:37,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 583 transitions, 10549 flow [2024-06-28 02:32:49,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 583 transitions, 10315 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:32:49,154 INFO L231 Difference]: Finished difference. Result has 429 places, 560 transitions, 9126 flow [2024-06-28 02:32:49,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8690, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9126, PETRI_PLACES=429, PETRI_TRANSITIONS=560} [2024-06-28 02:32:49,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-28 02:32:49,154 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 560 transitions, 9126 flow [2024-06-28 02:32:49,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:32:49,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:49,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:32:49,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 02:32:49,155 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:32:49,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:49,155 INFO L85 PathProgramCache]: Analyzing trace with hash -145224750, now seen corresponding path program 4 times [2024-06-28 02:32:49,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:49,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649434587] [2024-06-28 02:32:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:49,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:49,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:49,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649434587] [2024-06-28 02:32:49,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649434587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:49,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:49,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:32:49,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690186709] [2024-06-28 02:32:49,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:49,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:32:49,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:49,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:32:49,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:32:49,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:32:49,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 560 transitions, 9126 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:32:49,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:49,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:32:49,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:51,957 INFO L124 PetriNetUnfolderBase]: 6373/10899 cut-off events. [2024-06-28 02:32:51,957 INFO L125 PetriNetUnfolderBase]: For 2497598/2497598 co-relation queries the response was YES. [2024-06-28 02:32:52,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94044 conditions, 10899 events. 6373/10899 cut-off events. For 2497598/2497598 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 84574 event pairs, 2311 based on Foata normal form. 2/10894 useless extension candidates. Maximal degree in co-relation 93847. Up to 9859 conditions per place. [2024-06-28 02:32:52,125 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 458 selfloop transitions, 114 changer transitions 0/579 dead transitions. [2024-06-28 02:32:52,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 579 transitions, 10359 flow [2024-06-28 02:32:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:32:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:32:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 02:32:52,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-06-28 02:32:52,126 INFO L175 Difference]: Start difference. First operand has 429 places, 560 transitions, 9126 flow. Second operand 7 states and 165 transitions. [2024-06-28 02:32:52,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 579 transitions, 10359 flow [2024-06-28 02:33:04,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 579 transitions, 10102 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-06-28 02:33:04,764 INFO L231 Difference]: Finished difference. Result has 433 places, 561 transitions, 9149 flow [2024-06-28 02:33:04,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8885, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9149, PETRI_PLACES=433, PETRI_TRANSITIONS=561} [2024-06-28 02:33:04,764 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-28 02:33:04,764 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 561 transitions, 9149 flow [2024-06-28 02:33:04,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:33:04,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:04,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:04,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 02:33:04,765 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:33:04,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:04,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1598400500, now seen corresponding path program 5 times [2024-06-28 02:33:04,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:04,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938344314] [2024-06-28 02:33:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:04,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:04,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:04,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938344314] [2024-06-28 02:33:04,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938344314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:04,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:04,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:33:04,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598298936] [2024-06-28 02:33:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:04,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:33:04,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:33:04,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:33:04,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:33:04,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 561 transitions, 9149 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:33:04,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:04,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:33:04,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:07,777 INFO L124 PetriNetUnfolderBase]: 6414/10966 cut-off events. [2024-06-28 02:33:07,778 INFO L125 PetriNetUnfolderBase]: For 2578200/2578200 co-relation queries the response was YES. [2024-06-28 02:33:07,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95505 conditions, 10966 events. 6414/10966 cut-off events. For 2578200/2578200 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 85266 event pairs, 2036 based on Foata normal form. 2/10945 useless extension candidates. Maximal degree in co-relation 95306. Up to 9308 conditions per place. [2024-06-28 02:33:08,113 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 445 selfloop transitions, 143 changer transitions 0/595 dead transitions. [2024-06-28 02:33:08,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 595 transitions, 11066 flow [2024-06-28 02:33:08,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:33:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:33:08,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:33:08,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2024-06-28 02:33:08,114 INFO L175 Difference]: Start difference. First operand has 433 places, 561 transitions, 9149 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:33:08,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 595 transitions, 11066 flow [2024-06-28 02:33:18,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 595 transitions, 10805 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 02:33:18,400 INFO L231 Difference]: Finished difference. Result has 436 places, 567 transitions, 9355 flow [2024-06-28 02:33:18,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8888, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9355, PETRI_PLACES=436, PETRI_TRANSITIONS=567} [2024-06-28 02:33:18,401 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 395 predicate places. [2024-06-28 02:33:18,401 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 567 transitions, 9355 flow [2024-06-28 02:33:18,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:33:18,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:18,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:18,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 02:33:18,401 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:33:18,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:18,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1147577854, now seen corresponding path program 6 times [2024-06-28 02:33:18,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:18,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248622713] [2024-06-28 02:33:18,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:18,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:18,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:18,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248622713] [2024-06-28 02:33:18,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248622713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:18,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:18,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:33:18,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388427280] [2024-06-28 02:33:18,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:18,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:33:18,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:18,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:33:18,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:33:18,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:33:18,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 567 transitions, 9355 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:18,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:18,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:33:18,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:21,333 INFO L124 PetriNetUnfolderBase]: 6409/10965 cut-off events. [2024-06-28 02:33:21,333 INFO L125 PetriNetUnfolderBase]: For 2605230/2605230 co-relation queries the response was YES. [2024-06-28 02:33:21,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95764 conditions, 10965 events. 6409/10965 cut-off events. For 2605230/2605230 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 85196 event pairs, 2348 based on Foata normal form. 2/10960 useless extension candidates. Maximal degree in co-relation 95563. Up to 9915 conditions per place. [2024-06-28 02:33:21,517 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 465 selfloop transitions, 114 changer transitions 0/586 dead transitions. [2024-06-28 02:33:21,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 586 transitions, 10559 flow [2024-06-28 02:33:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:33:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:33:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 02:33:21,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571875 [2024-06-28 02:33:21,518 INFO L175 Difference]: Start difference. First operand has 436 places, 567 transitions, 9355 flow. Second operand 8 states and 183 transitions. [2024-06-28 02:33:21,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 586 transitions, 10559 flow [2024-06-28 02:33:32,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 586 transitions, 10233 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-28 02:33:33,000 INFO L231 Difference]: Finished difference. Result has 441 places, 567 transitions, 9262 flow [2024-06-28 02:33:33,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9029, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9262, PETRI_PLACES=441, PETRI_TRANSITIONS=567} [2024-06-28 02:33:33,000 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 400 predicate places. [2024-06-28 02:33:33,000 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 567 transitions, 9262 flow [2024-06-28 02:33:33,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:33,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:33,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:33,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 02:33:33,001 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:33:33,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:33,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2057513154, now seen corresponding path program 7 times [2024-06-28 02:33:33,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:33,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156139133] [2024-06-28 02:33:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:33,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:33,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:33,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156139133] [2024-06-28 02:33:33,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156139133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:33,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:33,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:33:33,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441206161] [2024-06-28 02:33:33,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:33,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:33:33,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:33,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:33:33,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:33:33,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:33:33,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 567 transitions, 9262 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:33,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:33,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:33:33,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:35,915 INFO L124 PetriNetUnfolderBase]: 6417/10960 cut-off events. [2024-06-28 02:33:35,915 INFO L125 PetriNetUnfolderBase]: For 2643118/2643118 co-relation queries the response was YES. [2024-06-28 02:33:36,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95840 conditions, 10960 events. 6417/10960 cut-off events. For 2643118/2643118 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 85121 event pairs, 2074 based on Foata normal form. 2/10939 useless extension candidates. Maximal degree in co-relation 95638. Up to 9615 conditions per place. [2024-06-28 02:33:36,146 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 451 selfloop transitions, 138 changer transitions 2/598 dead transitions. [2024-06-28 02:33:36,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 598 transitions, 10566 flow [2024-06-28 02:33:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:33:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:33:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:33:36,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60625 [2024-06-28 02:33:36,147 INFO L175 Difference]: Start difference. First operand has 441 places, 567 transitions, 9262 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:33:36,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 598 transitions, 10566 flow [2024-06-28 02:33:48,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 598 transitions, 10323 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:33:48,164 INFO L231 Difference]: Finished difference. Result has 443 places, 569 transitions, 9340 flow [2024-06-28 02:33:48,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9019, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9340, PETRI_PLACES=443, PETRI_TRANSITIONS=569} [2024-06-28 02:33:48,165 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-28 02:33:48,165 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 569 transitions, 9340 flow [2024-06-28 02:33:48,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:48,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:48,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:33:48,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 02:33:48,165 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:33:48,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:48,166 INFO L85 PathProgramCache]: Analyzing trace with hash 508084418, now seen corresponding path program 8 times [2024-06-28 02:33:48,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:48,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242209110] [2024-06-28 02:33:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:48,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:48,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:48,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242209110] [2024-06-28 02:33:48,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242209110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:48,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:48,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:33:48,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401570163] [2024-06-28 02:33:48,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:48,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:33:48,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:48,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:33:48,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:33:48,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:33:48,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 569 transitions, 9340 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:33:48,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:48,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:33:48,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:51,082 INFO L124 PetriNetUnfolderBase]: 6412/10943 cut-off events. [2024-06-28 02:33:51,082 INFO L125 PetriNetUnfolderBase]: For 2671390/2671390 co-relation queries the response was YES. [2024-06-28 02:33:51,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96033 conditions, 10943 events. 6412/10943 cut-off events. For 2671390/2671390 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 84879 event pairs, 2309 based on Foata normal form. 2/10932 useless extension candidates. Maximal degree in co-relation 95830. Up to 9875 conditions per place. [2024-06-28 02:33:51,281 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 461 selfloop transitions, 123 changer transitions 2/593 dead transitions. [2024-06-28 02:33:51,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 593 transitions, 10832 flow [2024-06-28 02:33:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:33:51,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:33:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-28 02:33:51,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5722222222222222 [2024-06-28 02:33:51,281 INFO L175 Difference]: Start difference. First operand has 443 places, 569 transitions, 9340 flow. Second operand 9 states and 206 transitions. [2024-06-28 02:33:51,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 593 transitions, 10832 flow [2024-06-28 02:34:02,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 593 transitions, 10560 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:34:02,236 INFO L231 Difference]: Finished difference. Result has 447 places, 569 transitions, 9319 flow [2024-06-28 02:34:02,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9068, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9319, PETRI_PLACES=447, PETRI_TRANSITIONS=569} [2024-06-28 02:34:02,236 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2024-06-28 02:34:02,237 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 569 transitions, 9319 flow [2024-06-28 02:34:02,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:02,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:02,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:02,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 02:34:02,237 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:34:02,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:02,237 INFO L85 PathProgramCache]: Analyzing trace with hash 499513538, now seen corresponding path program 9 times [2024-06-28 02:34:02,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:02,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091453502] [2024-06-28 02:34:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:02,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:02,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:02,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091453502] [2024-06-28 02:34:02,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091453502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:02,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:02,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:34:02,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554870072] [2024-06-28 02:34:02,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:02,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:34:02,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:02,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:34:02,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:34:02,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:34:02,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 569 transitions, 9319 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:02,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:02,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:34:02,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:05,167 INFO L124 PetriNetUnfolderBase]: 6407/10949 cut-off events. [2024-06-28 02:34:05,167 INFO L125 PetriNetUnfolderBase]: For 2698747/2698747 co-relation queries the response was YES. [2024-06-28 02:34:05,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95892 conditions, 10949 events. 6407/10949 cut-off events. For 2698747/2698747 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 85016 event pairs, 2319 based on Foata normal form. 2/10944 useless extension candidates. Maximal degree in co-relation 95688. Up to 9913 conditions per place. [2024-06-28 02:34:05,348 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 463 selfloop transitions, 118 changer transitions 0/588 dead transitions. [2024-06-28 02:34:05,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 588 transitions, 10527 flow [2024-06-28 02:34:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:34:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:34:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 02:34:05,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-28 02:34:05,349 INFO L175 Difference]: Start difference. First operand has 447 places, 569 transitions, 9319 flow. Second operand 8 states and 184 transitions. [2024-06-28 02:34:05,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 588 transitions, 10527 flow [2024-06-28 02:34:17,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 588 transitions, 10231 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 02:34:17,092 INFO L231 Difference]: Finished difference. Result has 449 places, 569 transitions, 9264 flow [2024-06-28 02:34:17,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9023, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9264, PETRI_PLACES=449, PETRI_TRANSITIONS=569} [2024-06-28 02:34:17,092 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 408 predicate places. [2024-06-28 02:34:17,093 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 569 transitions, 9264 flow [2024-06-28 02:34:17,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:17,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:17,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:17,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 02:34:17,093 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:34:17,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:17,094 INFO L85 PathProgramCache]: Analyzing trace with hash 512405105, now seen corresponding path program 13 times [2024-06-28 02:34:17,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:17,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635294755] [2024-06-28 02:34:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:17,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:17,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:17,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635294755] [2024-06-28 02:34:17,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635294755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:17,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:17,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:34:17,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719512168] [2024-06-28 02:34:17,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:17,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:34:17,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:17,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:34:17,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:34:17,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:34:17,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 569 transitions, 9264 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:17,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:17,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:34:17,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:20,020 INFO L124 PetriNetUnfolderBase]: 6412/10986 cut-off events. [2024-06-28 02:34:20,021 INFO L125 PetriNetUnfolderBase]: For 2728860/2728863 co-relation queries the response was YES. [2024-06-28 02:34:20,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96153 conditions, 10986 events. 6412/10986 cut-off events. For 2728860/2728863 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 85472 event pairs, 2399 based on Foata normal form. 3/10980 useless extension candidates. Maximal degree in co-relation 95948. Up to 9560 conditions per place. [2024-06-28 02:34:20,198 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 335 selfloop transitions, 247 changer transitions 0/589 dead transitions. [2024-06-28 02:34:20,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 589 transitions, 11036 flow [2024-06-28 02:34:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:34:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:34:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 02:34:20,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-28 02:34:20,199 INFO L175 Difference]: Start difference. First operand has 449 places, 569 transitions, 9264 flow. Second operand 8 states and 184 transitions. [2024-06-28 02:34:20,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 589 transitions, 11036 flow [2024-06-28 02:34:31,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 589 transitions, 10830 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:34:31,233 INFO L231 Difference]: Finished difference. Result has 451 places, 572 transitions, 9602 flow [2024-06-28 02:34:31,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9058, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9602, PETRI_PLACES=451, PETRI_TRANSITIONS=572} [2024-06-28 02:34:31,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2024-06-28 02:34:31,234 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 572 transitions, 9602 flow [2024-06-28 02:34:31,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:31,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:31,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:31,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 02:34:31,235 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:34:31,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:31,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1143979491, now seen corresponding path program 14 times [2024-06-28 02:34:31,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:31,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033521374] [2024-06-28 02:34:31,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:31,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:31,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:31,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033521374] [2024-06-28 02:34:31,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033521374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:31,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:31,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:34:31,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827414956] [2024-06-28 02:34:31,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:31,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:34:31,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:31,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:34:31,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:34:31,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:34:31,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 572 transitions, 9602 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:31,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:31,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:34:31,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:34,184 INFO L124 PetriNetUnfolderBase]: 6417/10995 cut-off events. [2024-06-28 02:34:34,184 INFO L125 PetriNetUnfolderBase]: For 2772293/2772296 co-relation queries the response was YES. [2024-06-28 02:34:34,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96912 conditions, 10995 events. 6417/10995 cut-off events. For 2772293/2772296 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 85648 event pairs, 2395 based on Foata normal form. 3/10989 useless extension candidates. Maximal degree in co-relation 96706. Up to 9566 conditions per place. [2024-06-28 02:34:34,361 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 338 selfloop transitions, 248 changer transitions 0/593 dead transitions. [2024-06-28 02:34:34,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 593 transitions, 11658 flow [2024-06-28 02:34:34,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:34:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:34:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 02:34:34,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.584375 [2024-06-28 02:34:34,362 INFO L175 Difference]: Start difference. First operand has 451 places, 572 transitions, 9602 flow. Second operand 8 states and 187 transitions. [2024-06-28 02:34:34,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 593 transitions, 11658 flow [2024-06-28 02:34:46,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 593 transitions, 11256 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 02:34:46,844 INFO L231 Difference]: Finished difference. Result has 454 places, 575 transitions, 9752 flow [2024-06-28 02:34:46,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9203, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9752, PETRI_PLACES=454, PETRI_TRANSITIONS=575} [2024-06-28 02:34:46,844 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-28 02:34:46,844 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 575 transitions, 9752 flow [2024-06-28 02:34:46,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:46,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:46,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:34:46,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 02:34:46,845 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:34:46,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:46,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1864684807, now seen corresponding path program 15 times [2024-06-28 02:34:46,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:46,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596134503] [2024-06-28 02:34:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:46,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:46,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:46,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596134503] [2024-06-28 02:34:46,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596134503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:46,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:46,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:34:46,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603330225] [2024-06-28 02:34:46,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:46,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:34:46,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:46,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:34:46,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:34:46,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:34:46,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 575 transitions, 9752 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:34:46,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:46,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:34:46,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:49,987 INFO L124 PetriNetUnfolderBase]: 6414/10991 cut-off events. [2024-06-28 02:34:49,987 INFO L125 PetriNetUnfolderBase]: For 2807495/2807498 co-relation queries the response was YES. [2024-06-28 02:34:50,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97055 conditions, 10991 events. 6414/10991 cut-off events. For 2807495/2807498 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 85534 event pairs, 2385 based on Foata normal form. 3/10985 useless extension candidates. Maximal degree in co-relation 96847. Up to 9563 conditions per place. [2024-06-28 02:34:50,189 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 336 selfloop transitions, 249 changer transitions 0/592 dead transitions. [2024-06-28 02:34:50,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 592 transitions, 11494 flow [2024-06-28 02:34:50,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:34:50,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:34:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 02:34:50,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-06-28 02:34:50,190 INFO L175 Difference]: Start difference. First operand has 454 places, 575 transitions, 9752 flow. Second operand 8 states and 185 transitions. [2024-06-28 02:34:50,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 592 transitions, 11494 flow [2024-06-28 02:35:03,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 592 transitions, 10672 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 02:35:03,320 INFO L231 Difference]: Finished difference. Result has 454 places, 575 transitions, 9434 flow [2024-06-28 02:35:03,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8930, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9434, PETRI_PLACES=454, PETRI_TRANSITIONS=575} [2024-06-28 02:35:03,321 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-28 02:35:03,321 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 575 transitions, 9434 flow [2024-06-28 02:35:03,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:35:03,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:35:03,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:35:03,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 02:35:03,321 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:35:03,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:35:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1704206192, now seen corresponding path program 5 times [2024-06-28 02:35:03,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:35:03,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830527838] [2024-06-28 02:35:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:35:03,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:35:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:35:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:35:03,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:35:03,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830527838] [2024-06-28 02:35:03,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830527838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:35:03,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:35:03,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:35:03,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2575415] [2024-06-28 02:35:03,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:35:03,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:35:03,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:35:03,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:35:03,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:35:03,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:35:03,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 575 transitions, 9434 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:35:03,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:35:03,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:35:03,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:35:06,343 INFO L124 PetriNetUnfolderBase]: 6362/10840 cut-off events. [2024-06-28 02:35:06,343 INFO L125 PetriNetUnfolderBase]: For 2835414/2835414 co-relation queries the response was YES. [2024-06-28 02:35:06,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95045 conditions, 10840 events. 6362/10840 cut-off events. For 2835414/2835414 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 83755 event pairs, 2315 based on Foata normal form. 10/10843 useless extension candidates. Maximal degree in co-relation 94838. Up to 9433 conditions per place. [2024-06-28 02:35:06,531 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 297 selfloop transitions, 290 changer transitions 4/598 dead transitions. [2024-06-28 02:35:06,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 598 transitions, 10954 flow [2024-06-28 02:35:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:35:06,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:35:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:35:06,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596875 [2024-06-28 02:35:06,531 INFO L175 Difference]: Start difference. First operand has 454 places, 575 transitions, 9434 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:35:06,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 598 transitions, 10954 flow [2024-06-28 02:35:20,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 598 transitions, 10358 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 02:35:20,629 INFO L231 Difference]: Finished difference. Result has 454 places, 574 transitions, 9412 flow [2024-06-28 02:35:20,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8838, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9412, PETRI_PLACES=454, PETRI_TRANSITIONS=574} [2024-06-28 02:35:20,630 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-28 02:35:20,630 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 574 transitions, 9412 flow [2024-06-28 02:35:20,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:35:20,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:35:20,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:35:20,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 02:35:20,631 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:35:20,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:35:20,631 INFO L85 PathProgramCache]: Analyzing trace with hash -374821788, now seen corresponding path program 10 times [2024-06-28 02:35:20,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:35:20,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704743815] [2024-06-28 02:35:20,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:35:20,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:35:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:35:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:35:20,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:35:20,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704743815] [2024-06-28 02:35:20,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704743815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:35:20,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:35:20,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:35:20,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047751793] [2024-06-28 02:35:20,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:35:20,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:35:20,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:35:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:35:20,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:35:20,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:35:20,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 574 transitions, 9412 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:35:20,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:35:20,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:35:20,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:35:23,641 INFO L124 PetriNetUnfolderBase]: 6317/10796 cut-off events. [2024-06-28 02:35:23,642 INFO L125 PetriNetUnfolderBase]: For 2797294/2797294 co-relation queries the response was YES. [2024-06-28 02:35:23,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93535 conditions, 10796 events. 6317/10796 cut-off events. For 2797294/2797294 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 83460 event pairs, 2212 based on Foata normal form. 12/10807 useless extension candidates. Maximal degree in co-relation 93327. Up to 9987 conditions per place. [2024-06-28 02:35:23,821 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 542 selfloop transitions, 42 changer transitions 4/595 dead transitions. [2024-06-28 02:35:23,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 595 transitions, 10697 flow [2024-06-28 02:35:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:35:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:35:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 02:35:23,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565625 [2024-06-28 02:35:23,822 INFO L175 Difference]: Start difference. First operand has 454 places, 574 transitions, 9412 flow. Second operand 8 states and 181 transitions. [2024-06-28 02:35:23,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 595 transitions, 10697 flow [2024-06-28 02:35:42,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 595 transitions, 10031 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:35:42,574 INFO L231 Difference]: Finished difference. Result has 454 places, 574 transitions, 8846 flow [2024-06-28 02:35:42,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8746, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8846, PETRI_PLACES=454, PETRI_TRANSITIONS=574} [2024-06-28 02:35:42,574 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-28 02:35:42,574 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 574 transitions, 8846 flow [2024-06-28 02:35:42,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:35:42,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:35:42,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:35:42,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 02:35:42,575 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:35:42,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:35:42,575 INFO L85 PathProgramCache]: Analyzing trace with hash -813935722, now seen corresponding path program 11 times [2024-06-28 02:35:42,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:35:42,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928051496] [2024-06-28 02:35:42,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:35:42,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:35:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:35:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:35:42,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:35:42,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928051496] [2024-06-28 02:35:42,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928051496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:35:42,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:35:42,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:35:42,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071458567] [2024-06-28 02:35:42,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:35:42,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:35:42,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:35:42,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:35:42,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:35:42,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:35:42,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 574 transitions, 8846 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:35:42,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:35:42,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:35:42,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:35:45,630 INFO L124 PetriNetUnfolderBase]: 6260/10689 cut-off events. [2024-06-28 02:35:45,631 INFO L125 PetriNetUnfolderBase]: For 2742562/2742562 co-relation queries the response was YES. [2024-06-28 02:35:45,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90782 conditions, 10689 events. 6260/10689 cut-off events. For 2742562/2742562 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 82276 event pairs, 2150 based on Foata normal form. 12/10696 useless extension candidates. Maximal degree in co-relation 90573. Up to 9729 conditions per place. [2024-06-28 02:35:45,803 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 539 selfloop transitions, 47 changer transitions 6/599 dead transitions. [2024-06-28 02:35:45,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 599 transitions, 10152 flow [2024-06-28 02:35:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:35:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:35:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 02:35:45,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-06-28 02:35:45,804 INFO L175 Difference]: Start difference. First operand has 454 places, 574 transitions, 8846 flow. Second operand 8 states and 185 transitions. [2024-06-28 02:35:45,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 599 transitions, 10152 flow [2024-06-28 02:35:58,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 599 transitions, 10000 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 02:35:58,886 INFO L231 Difference]: Finished difference. Result has 456 places, 572 transitions, 8778 flow [2024-06-28 02:35:58,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8694, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8778, PETRI_PLACES=456, PETRI_TRANSITIONS=572} [2024-06-28 02:35:58,886 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 415 predicate places. [2024-06-28 02:35:58,886 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 572 transitions, 8778 flow [2024-06-28 02:35:58,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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) [2024-06-28 02:35:58,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:35:58,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:35:58,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 02:35:58,887 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:35:58,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:35:58,887 INFO L85 PathProgramCache]: Analyzing trace with hash -387323800, now seen corresponding path program 6 times [2024-06-28 02:35:58,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:35:58,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029907996] [2024-06-28 02:35:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:35:58,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:35:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:35:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:35:58,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:35:58,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029907996] [2024-06-28 02:35:58,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029907996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:35:58,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:35:58,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:35:58,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048459918] [2024-06-28 02:35:58,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:35:58,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:35:58,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:35:58,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:35:58,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:35:59,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 02:35:59,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 572 transitions, 8778 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:35:59,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:35:59,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 02:35:59,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:01,706 INFO L124 PetriNetUnfolderBase]: 6211/10630 cut-off events. [2024-06-28 02:36:01,706 INFO L125 PetriNetUnfolderBase]: For 2764455/2764455 co-relation queries the response was YES. [2024-06-28 02:36:01,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90568 conditions, 10630 events. 6211/10630 cut-off events. For 2764455/2764455 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 81879 event pairs, 2170 based on Foata normal form. 10/10639 useless extension candidates. Maximal degree in co-relation 90358. Up to 9819 conditions per place. [2024-06-28 02:36:01,872 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 532 selfloop transitions, 51 changer transitions 4/594 dead transitions. [2024-06-28 02:36:01,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 594 transitions, 10061 flow [2024-06-28 02:36:01,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:36:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:36:01,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-28 02:36:01,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527777777777778 [2024-06-28 02:36:01,873 INFO L175 Difference]: Start difference. First operand has 456 places, 572 transitions, 8778 flow. Second operand 9 states and 199 transitions. [2024-06-28 02:36:01,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 594 transitions, 10061 flow Killed by 15