/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 19:10:22,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 19:10:22,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 19:10:22,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 19:10:22,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 19:10:22,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 19:10:22,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 19:10:22,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 19:10:22,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 19:10:22,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 19:10:22,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 19:10:22,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 19:10:22,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 19:10:22,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 19:10:22,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 19:10:22,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 19:10:22,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 19:10:22,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 19:10:22,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 19:10:22,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 19:10:22,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 19:10:22,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 19:10:22,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 19:10:22,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 19:10:22,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 19:10:22,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 19:10:22,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 19:10:22,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 19:10:22,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 19:10:22,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 19:10:22,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 19:10:22,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 19:10:22,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 19:10:22,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 19:10:22,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 19:10:22,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 19:10:22,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 19:10:22,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 19:10:22,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 19:10:22,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 19:10:22,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 19:10:22,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-05 19:10:22,375 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 19:10:22,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 19:10:22,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 19:10:22,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 19:10:22,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 19:10:22,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 19:10:22,379 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 19:10:22,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 19:10:22,379 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 19:10:22,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 19:10:22,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 19:10:22,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 19:10:22,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 19:10:22,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 19:10:22,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 19:10:22,381 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 19:10:22,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 19:10:22,381 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 19:10:22,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 19:10:22,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 19:10:22,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 19:10:22,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 19:10:22,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 19:10:22,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:10:22,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 19:10:22,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 19:10:22,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 19:10:22,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 19:10:22,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 19:10:22,383 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 19:10:22,383 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 19:10:22,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 19:10:22,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 19:10:22,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 19:10:22,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 19:10:22,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 19:10:22,732 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 19:10:22,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2022-12-05 19:10:23,956 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 19:10:24,191 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 19:10:24,191 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2022-12-05 19:10:24,197 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56734220f/49460316cf71439b944906c225785ca1/FLAGf7d633bca [2022-12-05 19:10:24,207 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56734220f/49460316cf71439b944906c225785ca1 [2022-12-05 19:10:24,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 19:10:24,210 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 19:10:24,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 19:10:24,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 19:10:24,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 19:10:24,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1904f1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24, skipping insertion in model container [2022-12-05 19:10:24,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 19:10:24,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 19:10:24,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,357 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,358 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,359 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,359 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,369 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,374 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,385 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-12-05 19:10:24,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:10:24,400 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 19:10:24,412 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,423 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,428 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:10:24,428 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:10:24,433 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-12-05 19:10:24,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:10:24,449 INFO L208 MainTranslator]: Completed translation [2022-12-05 19:10:24,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24 WrapperNode [2022-12-05 19:10:24,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 19:10:24,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 19:10:24,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 19:10:24,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 19:10:24,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,498 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 460 [2022-12-05 19:10:24,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 19:10:24,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 19:10:24,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 19:10:24,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 19:10:24,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,557 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 19:10:24,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 19:10:24,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 19:10:24,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 19:10:24,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24" (1/1) ... [2022-12-05 19:10:24,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:10:24,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:10:24,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 19:10:24,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 19:10:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 19:10:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 19:10:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 19:10:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 19:10:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 19:10:24,649 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 19:10:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 19:10:24,649 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 19:10:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 19:10:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 19:10:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-05 19:10:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-05 19:10:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 19:10:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 19:10:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 19:10:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 19:10:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 19:10:24,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 19:10:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 19:10:24,653 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 19:10:24,785 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 19:10:24,787 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 19:10:25,375 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 19:10:25,642 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 19:10:25,643 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-05 19:10:25,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:10:25 BoogieIcfgContainer [2022-12-05 19:10:25,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 19:10:25,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 19:10:25,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 19:10:25,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 19:10:25,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 07:10:24" (1/3) ... [2022-12-05 19:10:25,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331363db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:10:25, skipping insertion in model container [2022-12-05 19:10:25,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:10:24" (2/3) ... [2022-12-05 19:10:25,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331363db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:10:25, skipping insertion in model container [2022-12-05 19:10:25,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:10:25" (3/3) ... [2022-12-05 19:10:25,657 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-12-05 19:10:25,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 19:10:25,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 19:10:25,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 19:10:25,817 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-05 19:10:25,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 331 transitions, 694 flow [2022-12-05 19:10:25,973 INFO L130 PetriNetUnfolder]: 37/327 cut-off events. [2022-12-05 19:10:25,973 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 19:10:25,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 327 events. 37/327 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 285. Up to 8 conditions per place. [2022-12-05 19:10:25,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 331 transitions, 694 flow [2022-12-05 19:10:25,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 315 transitions, 654 flow [2022-12-05 19:10:26,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 19:10:26,013 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=LoopsAndPotentialCycles, 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;@dc16a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 19:10:26,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 19:10:26,093 INFO L130 PetriNetUnfolder]: 37/314 cut-off events. [2022-12-05 19:10:26,093 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 19:10:26,093 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:10:26,094 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:10:26,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:10:26,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:10:26,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1523517568, now seen corresponding path program 1 times [2022-12-05 19:10:26,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:10:26,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369078401] [2022-12-05 19:10:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:10:26,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:10:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:10:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:10:26,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:10:26,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369078401] [2022-12-05 19:10:26,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369078401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:10:26,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:10:26,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 19:10:26,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653552747] [2022-12-05 19:10:26,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:10:26,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-05 19:10:26,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:10:26,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-05 19:10:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-05 19:10:26,579 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 331 [2022-12-05 19:10:26,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 315 transitions, 654 flow. Second operand has 2 states, 2 states have (on average 299.0) internal successors, (598), 2 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:26,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:10:26,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 331 [2022-12-05 19:10:26,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:10:26,689 INFO L130 PetriNetUnfolder]: 56/334 cut-off events. [2022-12-05 19:10:26,692 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-05 19:10:26,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 334 events. 56/334 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 261 event pairs, 0 based on Foata normal form. 29/331 useless extension candidates. Maximal degree in co-relation 311. Up to 57 conditions per place. [2022-12-05 19:10:26,699 INFO L137 encePairwiseOnDemand]: 314/331 looper letters, 20 selfloop transitions, 0 changer transitions 9/298 dead transitions. [2022-12-05 19:10:26,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 298 transitions, 660 flow [2022-12-05 19:10:26,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-05 19:10:26,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-05 19:10:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 623 transitions. [2022-12-05 19:10:26,718 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9410876132930514 [2022-12-05 19:10:26,720 INFO L175 Difference]: Start difference. First operand has 291 places, 315 transitions, 654 flow. Second operand 2 states and 623 transitions. [2022-12-05 19:10:26,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 298 transitions, 660 flow [2022-12-05 19:10:26,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 298 transitions, 644 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 19:10:26,734 INFO L231 Difference]: Finished difference. Result has 284 places, 289 transitions, 586 flow [2022-12-05 19:10:26,737 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=586, PETRI_PLACES=284, PETRI_TRANSITIONS=289} [2022-12-05 19:10:26,742 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, -7 predicate places. [2022-12-05 19:10:26,742 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 289 transitions, 586 flow [2022-12-05 19:10:26,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 299.0) internal successors, (598), 2 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:26,743 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:10:26,744 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:10:26,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 19:10:26,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:10:26,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:10:26,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1562130048, now seen corresponding path program 1 times [2022-12-05 19:10:26,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:10:26,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265000374] [2022-12-05 19:10:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:10:26,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:10:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:10:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:10:27,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:10:27,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265000374] [2022-12-05 19:10:27,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265000374] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:10:27,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:10:27,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 19:10:27,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528083419] [2022-12-05 19:10:27,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:10:27,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 19:10:27,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:10:27,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 19:10:27,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 19:10:27,503 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 331 [2022-12-05 19:10:27,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 289 transitions, 586 flow. Second operand has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:27,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:10:27,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 331 [2022-12-05 19:10:27,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:10:27,763 INFO L130 PetriNetUnfolder]: 107/462 cut-off events. [2022-12-05 19:10:27,763 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-05 19:10:27,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 462 events. 107/462 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 744 event pairs, 0 based on Foata normal form. 1/412 useless extension candidates. Maximal degree in co-relation 621. Up to 85 conditions per place. [2022-12-05 19:10:27,769 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 69 selfloop transitions, 7 changer transitions 4/311 dead transitions. [2022-12-05 19:10:27,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 311 transitions, 797 flow [2022-12-05 19:10:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 19:10:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 19:10:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1311 transitions. [2022-12-05 19:10:27,774 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7921450151057402 [2022-12-05 19:10:27,774 INFO L175 Difference]: Start difference. First operand has 284 places, 289 transitions, 586 flow. Second operand 5 states and 1311 transitions. [2022-12-05 19:10:27,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 311 transitions, 797 flow [2022-12-05 19:10:27,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 311 transitions, 797 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 19:10:27,783 INFO L231 Difference]: Finished difference. Result has 282 places, 295 transitions, 637 flow [2022-12-05 19:10:27,783 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=637, PETRI_PLACES=282, PETRI_TRANSITIONS=295} [2022-12-05 19:10:27,784 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, -9 predicate places. [2022-12-05 19:10:27,785 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 295 transitions, 637 flow [2022-12-05 19:10:27,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:27,786 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:10:27,786 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:10:27,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 19:10:27,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:10:27,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:10:27,789 INFO L85 PathProgramCache]: Analyzing trace with hash -363728430, now seen corresponding path program 1 times [2022-12-05 19:10:27,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:10:27,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005308416] [2022-12-05 19:10:27,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:10:27,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:10:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:10:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:10:28,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:10:28,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005308416] [2022-12-05 19:10:28,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005308416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:10:28,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:10:28,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:10:28,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967731786] [2022-12-05 19:10:28,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:10:28,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:10:28,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:10:28,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:10:28,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:10:28,237 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 331 [2022-12-05 19:10:28,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 295 transitions, 637 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:28,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:10:28,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 331 [2022-12-05 19:10:28,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:10:28,410 INFO L130 PetriNetUnfolder]: 171/621 cut-off events. [2022-12-05 19:10:28,411 INFO L131 PetriNetUnfolder]: For 86/90 co-relation queries the response was YES. [2022-12-05 19:10:28,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 621 events. 171/621 cut-off events. For 86/90 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1488 event pairs, 3 based on Foata normal form. 19/563 useless extension candidates. Maximal degree in co-relation 923. Up to 124 conditions per place. [2022-12-05 19:10:28,420 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 43 selfloop transitions, 8 changer transitions 0/313 dead transitions. [2022-12-05 19:10:28,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 313 transitions, 796 flow [2022-12-05 19:10:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:10:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:10:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 903 transitions. [2022-12-05 19:10:28,423 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9093655589123867 [2022-12-05 19:10:28,423 INFO L175 Difference]: Start difference. First operand has 282 places, 295 transitions, 637 flow. Second operand 3 states and 903 transitions. [2022-12-05 19:10:28,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 313 transitions, 796 flow [2022-12-05 19:10:28,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 313 transitions, 782 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 19:10:28,430 INFO L231 Difference]: Finished difference. Result has 280 places, 298 transitions, 674 flow [2022-12-05 19:10:28,430 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=674, PETRI_PLACES=280, PETRI_TRANSITIONS=298} [2022-12-05 19:10:28,432 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, -11 predicate places. [2022-12-05 19:10:28,432 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 298 transitions, 674 flow [2022-12-05 19:10:28,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:28,433 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:10:28,433 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:10:28,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 19:10:28,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:10:28,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:10:28,434 INFO L85 PathProgramCache]: Analyzing trace with hash -50464878, now seen corresponding path program 1 times [2022-12-05 19:10:28,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:10:28,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720788507] [2022-12-05 19:10:28,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:10:28,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:10:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:10:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:10:28,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:10:28,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720788507] [2022-12-05 19:10:28,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720788507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:10:28,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:10:28,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:10:28,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492842819] [2022-12-05 19:10:28,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:10:28,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:10:28,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:10:28,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:10:28,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:10:28,757 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 331 [2022-12-05 19:10:28,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 298 transitions, 674 flow. Second operand has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:28,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:10:28,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 331 [2022-12-05 19:10:28,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:10:29,047 INFO L130 PetriNetUnfolder]: 317/1036 cut-off events. [2022-12-05 19:10:29,048 INFO L131 PetriNetUnfolder]: For 274/286 co-relation queries the response was YES. [2022-12-05 19:10:29,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 1036 events. 317/1036 cut-off events. For 274/286 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3971 event pairs, 15 based on Foata normal form. 15/895 useless extension candidates. Maximal degree in co-relation 1700. Up to 194 conditions per place. [2022-12-05 19:10:29,064 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 57 selfloop transitions, 2 changer transitions 0/324 dead transitions. [2022-12-05 19:10:29,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 324 transitions, 898 flow [2022-12-05 19:10:29,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:10:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:10:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2022-12-05 19:10:29,067 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9164149043303121 [2022-12-05 19:10:29,067 INFO L175 Difference]: Start difference. First operand has 280 places, 298 transitions, 674 flow. Second operand 3 states and 910 transitions. [2022-12-05 19:10:29,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 324 transitions, 898 flow [2022-12-05 19:10:29,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 324 transitions, 887 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:10:29,074 INFO L231 Difference]: Finished difference. Result has 282 places, 299 transitions, 680 flow [2022-12-05 19:10:29,075 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=680, PETRI_PLACES=282, PETRI_TRANSITIONS=299} [2022-12-05 19:10:29,075 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, -9 predicate places. [2022-12-05 19:10:29,076 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 299 transitions, 680 flow [2022-12-05 19:10:29,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:29,076 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:10:29,077 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:10:29,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 19:10:29,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:10:29,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:10:29,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1103148154, now seen corresponding path program 1 times [2022-12-05 19:10:29,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:10:29,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914065346] [2022-12-05 19:10:29,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:10:29,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:10:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:10:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:10:29,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:10:29,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914065346] [2022-12-05 19:10:29,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914065346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:10:29,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:10:29,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:10:29,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188345439] [2022-12-05 19:10:29,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:10:29,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:10:29,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:10:29,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:10:29,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:10:29,311 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 331 [2022-12-05 19:10:29,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 299 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:29,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:10:29,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 331 [2022-12-05 19:10:29,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:10:29,678 INFO L130 PetriNetUnfolder]: 579/1827 cut-off events. [2022-12-05 19:10:29,679 INFO L131 PetriNetUnfolder]: For 682/698 co-relation queries the response was YES. [2022-12-05 19:10:29,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 1827 events. 579/1827 cut-off events. For 682/698 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 10022 event pairs, 29 based on Foata normal form. 33/1530 useless extension candidates. Maximal degree in co-relation 3077. Up to 363 conditions per place. [2022-12-05 19:10:29,712 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 59 selfloop transitions, 2 changer transitions 0/326 dead transitions. [2022-12-05 19:10:29,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 326 transitions, 916 flow [2022-12-05 19:10:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:10:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:10:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2022-12-05 19:10:29,749 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9164149043303121 [2022-12-05 19:10:29,749 INFO L175 Difference]: Start difference. First operand has 282 places, 299 transitions, 680 flow. Second operand 3 states and 910 transitions. [2022-12-05 19:10:29,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 326 transitions, 916 flow [2022-12-05 19:10:29,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 326 transitions, 913 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:10:29,756 INFO L231 Difference]: Finished difference. Result has 284 places, 300 transitions, 692 flow [2022-12-05 19:10:29,756 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=284, PETRI_TRANSITIONS=300} [2022-12-05 19:10:29,757 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, -7 predicate places. [2022-12-05 19:10:29,757 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 300 transitions, 692 flow [2022-12-05 19:10:29,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:29,758 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:10:29,758 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:10:29,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 19:10:29,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:10:29,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:10:29,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1478225685, now seen corresponding path program 1 times [2022-12-05 19:10:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:10:29,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254869612] [2022-12-05 19:10:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:10:29,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:10:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:10:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:10:29,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:10:29,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254869612] [2022-12-05 19:10:29,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254869612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:10:29,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:10:29,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:10:29,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438028872] [2022-12-05 19:10:29,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:10:29,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:10:29,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:10:29,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:10:29,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:10:29,853 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 331 [2022-12-05 19:10:29,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 300 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:29,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:10:29,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 331 [2022-12-05 19:10:29,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:10:30,423 INFO L130 PetriNetUnfolder]: 1212/3021 cut-off events. [2022-12-05 19:10:30,423 INFO L131 PetriNetUnfolder]: For 1595/1721 co-relation queries the response was YES. [2022-12-05 19:10:30,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5775 conditions, 3021 events. 1212/3021 cut-off events. For 1595/1721 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18520 event pairs, 155 based on Foata normal form. 27/2480 useless extension candidates. Maximal degree in co-relation 5767. Up to 847 conditions per place. [2022-12-05 19:10:30,478 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 52 selfloop transitions, 6 changer transitions 0/322 dead transitions. [2022-12-05 19:10:30,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 322 transitions, 909 flow [2022-12-05 19:10:30,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:10:30,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:10:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 905 transitions. [2022-12-05 19:10:30,481 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9113796576032226 [2022-12-05 19:10:30,481 INFO L175 Difference]: Start difference. First operand has 284 places, 300 transitions, 692 flow. Second operand 3 states and 905 transitions. [2022-12-05 19:10:30,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 322 transitions, 909 flow [2022-12-05 19:10:30,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 322 transitions, 906 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:10:30,490 INFO L231 Difference]: Finished difference. Result has 287 places, 301 transitions, 720 flow [2022-12-05 19:10:30,490 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=720, PETRI_PLACES=287, PETRI_TRANSITIONS=301} [2022-12-05 19:10:30,493 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, -4 predicate places. [2022-12-05 19:10:30,494 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 301 transitions, 720 flow [2022-12-05 19:10:30,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:30,494 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:10:30,495 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:10:30,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 19:10:30,495 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:10:30,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:10:30,495 INFO L85 PathProgramCache]: Analyzing trace with hash -62537064, now seen corresponding path program 1 times [2022-12-05 19:10:30,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:10:30,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905248819] [2022-12-05 19:10:30,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:10:30,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:10:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:10:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:10:30,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:10:30,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905248819] [2022-12-05 19:10:30,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905248819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:10:30,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:10:30,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:10:30,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323513802] [2022-12-05 19:10:30,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:10:30,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:10:30,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:10:30,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:10:30,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:10:30,749 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 331 [2022-12-05 19:10:30,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 301 transitions, 720 flow. Second operand has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:30,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:10:30,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 331 [2022-12-05 19:10:30,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:10:31,394 INFO L130 PetriNetUnfolder]: 807/2853 cut-off events. [2022-12-05 19:10:31,394 INFO L131 PetriNetUnfolder]: For 1871/2060 co-relation queries the response was YES. [2022-12-05 19:10:31,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5067 conditions, 2853 events. 807/2853 cut-off events. For 1871/2060 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18323 event pairs, 117 based on Foata normal form. 95/2423 useless extension candidates. Maximal degree in co-relation 5058. Up to 794 conditions per place. [2022-12-05 19:10:31,435 INFO L137 encePairwiseOnDemand]: 319/331 looper letters, 128 selfloop transitions, 11 changer transitions 0/359 dead transitions. [2022-12-05 19:10:31,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 359 transitions, 1146 flow [2022-12-05 19:10:31,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:10:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:10:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2314 transitions. [2022-12-05 19:10:31,440 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7767707284323598 [2022-12-05 19:10:31,440 INFO L175 Difference]: Start difference. First operand has 287 places, 301 transitions, 720 flow. Second operand 9 states and 2314 transitions. [2022-12-05 19:10:31,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 359 transitions, 1146 flow [2022-12-05 19:10:31,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 359 transitions, 1134 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 19:10:31,449 INFO L231 Difference]: Finished difference. Result has 295 places, 305 transitions, 754 flow [2022-12-05 19:10:31,449 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=754, PETRI_PLACES=295, PETRI_TRANSITIONS=305} [2022-12-05 19:10:31,450 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, 4 predicate places. [2022-12-05 19:10:31,450 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 305 transitions, 754 flow [2022-12-05 19:10:31,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:31,452 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:10:31,452 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:10:31,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 19:10:31,453 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:10:31,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:10:31,453 INFO L85 PathProgramCache]: Analyzing trace with hash -894263996, now seen corresponding path program 1 times [2022-12-05 19:10:31,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:10:31,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814059612] [2022-12-05 19:10:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:10:31,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:10:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:10:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:10:31,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:10:31,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814059612] [2022-12-05 19:10:31,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814059612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:10:31,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:10:31,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:10:31,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685109941] [2022-12-05 19:10:31,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:10:31,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:10:31,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:10:31,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:10:31,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:10:31,561 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 331 [2022-12-05 19:10:31,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 305 transitions, 754 flow. Second operand has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:31,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:10:31,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 331 [2022-12-05 19:10:31,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:10:32,022 INFO L130 PetriNetUnfolder]: 1134/2401 cut-off events. [2022-12-05 19:10:32,022 INFO L131 PetriNetUnfolder]: For 1903/2070 co-relation queries the response was YES. [2022-12-05 19:10:32,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5516 conditions, 2401 events. 1134/2401 cut-off events. For 1903/2070 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9867 event pairs, 43 based on Foata normal form. 2/2191 useless extension candidates. Maximal degree in co-relation 5505. Up to 1047 conditions per place. [2022-12-05 19:10:32,065 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 48 selfloop transitions, 5 changer transitions 3/314 dead transitions. [2022-12-05 19:10:32,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 314 transitions, 888 flow [2022-12-05 19:10:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:10:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:10:32,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 887 transitions. [2022-12-05 19:10:32,068 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8932527693856999 [2022-12-05 19:10:32,068 INFO L175 Difference]: Start difference. First operand has 295 places, 305 transitions, 754 flow. Second operand 3 states and 887 transitions. [2022-12-05 19:10:32,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 314 transitions, 888 flow [2022-12-05 19:10:32,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 314 transitions, 879 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 19:10:32,075 INFO L231 Difference]: Finished difference. Result has 296 places, 299 transitions, 734 flow [2022-12-05 19:10:32,075 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=734, PETRI_PLACES=296, PETRI_TRANSITIONS=299} [2022-12-05 19:10:32,078 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, 5 predicate places. [2022-12-05 19:10:32,078 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 299 transitions, 734 flow [2022-12-05 19:10:32,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:32,079 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:10:32,079 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:10:32,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 19:10:32,079 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:10:32,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:10:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2058419274, now seen corresponding path program 1 times [2022-12-05 19:10:32,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:10:32,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213415574] [2022-12-05 19:10:32,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:10:32,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:10:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:10:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:10:33,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:10:33,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213415574] [2022-12-05 19:10:33,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213415574] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:10:33,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609673420] [2022-12-05 19:10:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:10:33,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:10:33,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:10:33,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:10:33,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 19:10:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:10:33,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-05 19:10:33,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:10:34,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-05 19:10:36,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 19:10:36,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 19:10:36,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 19:10:36,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 19:10:36,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:10:36,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:10:38,837 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:10:38,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 56 [2022-12-05 19:10:38,851 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-05 19:10:38,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1606 treesize of output 1549 [2022-12-05 19:10:38,874 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-05 19:10:38,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1542 treesize of output 1158 [2022-12-05 19:10:38,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-05 19:10:38,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 579 treesize of output 531 [2022-12-05 19:10:38,903 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-05 19:10:38,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1110 treesize of output 918 [2022-12-05 19:10:38,918 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-05 19:10:38,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 918 treesize of output 822 [2022-12-05 19:10:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:10:42,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609673420] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:10:42,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:10:42,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 30, 24] total 64 [2022-12-05 19:10:42,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203649325] [2022-12-05 19:10:42,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:10:42,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-05 19:10:42,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:10:42,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-05 19:10:42,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=3287, Unknown=34, NotChecked=0, Total=4032 [2022-12-05 19:10:42,175 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 331 [2022-12-05 19:10:42,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 299 transitions, 734 flow. Second operand has 64 states, 64 states have (on average 152.15625) internal successors, (9738), 64 states have internal predecessors, (9738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:42,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:10:42,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 331 [2022-12-05 19:10:42,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:10:47,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:10:53,537 INFO L130 PetriNetUnfolder]: 6014/15927 cut-off events. [2022-12-05 19:10:53,537 INFO L131 PetriNetUnfolder]: For 11952/13232 co-relation queries the response was YES. [2022-12-05 19:10:53,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34354 conditions, 15927 events. 6014/15927 cut-off events. For 11952/13232 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 150049 event pairs, 22 based on Foata normal form. 48/14001 useless extension candidates. Maximal degree in co-relation 34342. Up to 3520 conditions per place. [2022-12-05 19:10:53,789 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 451 selfloop transitions, 124 changer transitions 16/733 dead transitions. [2022-12-05 19:10:53,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 733 transitions, 3476 flow [2022-12-05 19:10:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-05 19:10:53,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-05 19:10:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 8650 transitions. [2022-12-05 19:10:53,810 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.47514419115627576 [2022-12-05 19:10:53,810 INFO L175 Difference]: Start difference. First operand has 296 places, 299 transitions, 734 flow. Second operand 55 states and 8650 transitions. [2022-12-05 19:10:53,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 733 transitions, 3476 flow [2022-12-05 19:10:53,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 733 transitions, 3403 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 19:10:53,830 INFO L231 Difference]: Finished difference. Result has 365 places, 413 transitions, 1787 flow [2022-12-05 19:10:53,830 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=1787, PETRI_PLACES=365, PETRI_TRANSITIONS=413} [2022-12-05 19:10:53,831 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, 74 predicate places. [2022-12-05 19:10:53,831 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 413 transitions, 1787 flow [2022-12-05 19:10:53,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 152.15625) internal successors, (9738), 64 states have internal predecessors, (9738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:53,836 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:10:53,837 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:10:53,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 19:10:54,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:10:54,045 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:10:54,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:10:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1027631031, now seen corresponding path program 1 times [2022-12-05 19:10:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:10:54,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222641184] [2022-12-05 19:10:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:10:54,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:10:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:10:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:10:54,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:10:54,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222641184] [2022-12-05 19:10:54,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222641184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:10:54,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:10:54,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:10:54,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975057418] [2022-12-05 19:10:54,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:10:54,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:10:54,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:10:54,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:10:54,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:10:54,172 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 331 [2022-12-05 19:10:54,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 413 transitions, 1787 flow. Second operand has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:54,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:10:54,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 331 [2022-12-05 19:10:54,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:10:57,602 INFO L130 PetriNetUnfolder]: 7053/17796 cut-off events. [2022-12-05 19:10:57,603 INFO L131 PetriNetUnfolder]: For 39278/42329 co-relation queries the response was YES. [2022-12-05 19:10:57,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48494 conditions, 17796 events. 7053/17796 cut-off events. For 39278/42329 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 174072 event pairs, 893 based on Foata normal form. 62/15362 useless extension candidates. Maximal degree in co-relation 48461. Up to 5044 conditions per place. [2022-12-05 19:10:57,962 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 148 selfloop transitions, 14 changer transitions 0/442 dead transitions. [2022-12-05 19:10:57,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 442 transitions, 2329 flow [2022-12-05 19:10:57,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:10:57,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:10:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 906 transitions. [2022-12-05 19:10:57,965 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9123867069486404 [2022-12-05 19:10:57,965 INFO L175 Difference]: Start difference. First operand has 365 places, 413 transitions, 1787 flow. Second operand 3 states and 906 transitions. [2022-12-05 19:10:57,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 442 transitions, 2329 flow [2022-12-05 19:10:58,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 442 transitions, 2022 flow, removed 125 selfloop flow, removed 28 redundant places. [2022-12-05 19:10:58,048 INFO L231 Difference]: Finished difference. Result has 333 places, 389 transitions, 1424 flow [2022-12-05 19:10:58,049 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1424, PETRI_PLACES=333, PETRI_TRANSITIONS=389} [2022-12-05 19:10:58,050 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, 42 predicate places. [2022-12-05 19:10:58,050 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 389 transitions, 1424 flow [2022-12-05 19:10:58,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:58,050 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:10:58,051 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:10:58,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 19:10:58,051 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:10:58,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:10:58,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1126486844, now seen corresponding path program 1 times [2022-12-05 19:10:58,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:10:58,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926406246] [2022-12-05 19:10:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:10:58,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:10:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:10:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:10:58,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:10:58,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926406246] [2022-12-05 19:10:58,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926406246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:10:58,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:10:58,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:10:58,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446312837] [2022-12-05 19:10:58,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:10:58,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:10:58,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:10:58,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:10:58,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:10:58,154 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 331 [2022-12-05 19:10:58,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 389 transitions, 1424 flow. Second operand has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:10:58,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:10:58,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 331 [2022-12-05 19:10:58,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:11:02,130 INFO L130 PetriNetUnfolder]: 8290/22332 cut-off events. [2022-12-05 19:11:02,130 INFO L131 PetriNetUnfolder]: For 54271/58806 co-relation queries the response was YES. [2022-12-05 19:11:02,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57907 conditions, 22332 events. 8290/22332 cut-off events. For 54271/58806 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 243006 event pairs, 1355 based on Foata normal form. 65/19487 useless extension candidates. Maximal degree in co-relation 57882. Up to 5966 conditions per place. [2022-12-05 19:11:02,594 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 127 selfloop transitions, 13 changer transitions 0/420 dead transitions. [2022-12-05 19:11:02,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 420 transitions, 1941 flow [2022-12-05 19:11:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:11:02,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:11:02,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 905 transitions. [2022-12-05 19:11:02,601 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9113796576032226 [2022-12-05 19:11:02,601 INFO L175 Difference]: Start difference. First operand has 333 places, 389 transitions, 1424 flow. Second operand 3 states and 905 transitions. [2022-12-05 19:11:02,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 420 transitions, 1941 flow [2022-12-05 19:11:02,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 420 transitions, 1841 flow, removed 18 selfloop flow, removed 3 redundant places. [2022-12-05 19:11:02,644 INFO L231 Difference]: Finished difference. Result has 333 places, 373 transitions, 1314 flow [2022-12-05 19:11:02,645 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1314, PETRI_PLACES=333, PETRI_TRANSITIONS=373} [2022-12-05 19:11:02,645 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, 42 predicate places. [2022-12-05 19:11:02,645 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 373 transitions, 1314 flow [2022-12-05 19:11:02,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:11:02,646 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:11:02,646 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:11:02,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 19:11:02,646 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:11:02,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:11:02,647 INFO L85 PathProgramCache]: Analyzing trace with hash 962878931, now seen corresponding path program 1 times [2022-12-05 19:11:02,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:11:02,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471749576] [2022-12-05 19:11:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:11:02,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:11:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:11:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 19:11:02,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:11:02,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471749576] [2022-12-05 19:11:02,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471749576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:11:02,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:11:02,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:11:02,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949799619] [2022-12-05 19:11:02,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:11:02,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:11:02,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:11:02,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:11:02,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:11:02,911 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 331 [2022-12-05 19:11:02,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 373 transitions, 1314 flow. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:11:02,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:11:02,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 331 [2022-12-05 19:11:02,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:11:05,510 INFO L130 PetriNetUnfolder]: 4016/14156 cut-off events. [2022-12-05 19:11:05,510 INFO L131 PetriNetUnfolder]: For 33796/35990 co-relation queries the response was YES. [2022-12-05 19:11:05,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35119 conditions, 14156 events. 4016/14156 cut-off events. For 33796/35990 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 153697 event pairs, 470 based on Foata normal form. 267/12862 useless extension candidates. Maximal degree in co-relation 35094. Up to 3901 conditions per place. [2022-12-05 19:11:05,636 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 143 selfloop transitions, 2 changer transitions 0/427 dead transitions. [2022-12-05 19:11:05,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 427 transitions, 1988 flow [2022-12-05 19:11:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:11:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:11:05,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 907 transitions. [2022-12-05 19:11:05,638 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9133937562940584 [2022-12-05 19:11:05,639 INFO L175 Difference]: Start difference. First operand has 333 places, 373 transitions, 1314 flow. Second operand 3 states and 907 transitions. [2022-12-05 19:11:05,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 427 transitions, 1988 flow [2022-12-05 19:11:05,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 427 transitions, 1940 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 19:11:05,663 INFO L231 Difference]: Finished difference. Result has 333 places, 369 transitions, 1270 flow [2022-12-05 19:11:05,664 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1270, PETRI_PLACES=333, PETRI_TRANSITIONS=369} [2022-12-05 19:11:05,664 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, 42 predicate places. [2022-12-05 19:11:05,664 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 369 transitions, 1270 flow [2022-12-05 19:11:05,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:11:05,665 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:11:05,665 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:11:05,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 19:11:05,665 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:11:05,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:11:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash -770933704, now seen corresponding path program 2 times [2022-12-05 19:11:05,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:11:05,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937601313] [2022-12-05 19:11:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:11:05,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:11:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:11:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:11:05,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:11:05,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937601313] [2022-12-05 19:11:05,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937601313] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:11:05,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:11:05,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:11:05,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498481217] [2022-12-05 19:11:05,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:11:05,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:11:05,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:11:05,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:11:05,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:11:05,764 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 331 [2022-12-05 19:11:05,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 369 transitions, 1270 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:11:05,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:11:05,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 331 [2022-12-05 19:11:05,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:11:09,587 INFO L130 PetriNetUnfolder]: 8998/22330 cut-off events. [2022-12-05 19:11:09,588 INFO L131 PetriNetUnfolder]: For 83447/87461 co-relation queries the response was YES. [2022-12-05 19:11:09,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69108 conditions, 22330 events. 8998/22330 cut-off events. For 83447/87461 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 222443 event pairs, 1023 based on Foata normal form. 36/19691 useless extension candidates. Maximal degree in co-relation 69082. Up to 8652 conditions per place. [2022-12-05 19:11:09,819 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 121 selfloop transitions, 15 changer transitions 0/408 dead transitions. [2022-12-05 19:11:09,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 408 transitions, 1811 flow [2022-12-05 19:11:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:11:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:11:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 887 transitions. [2022-12-05 19:11:09,822 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8932527693856999 [2022-12-05 19:11:09,822 INFO L175 Difference]: Start difference. First operand has 333 places, 369 transitions, 1270 flow. Second operand 3 states and 887 transitions. [2022-12-05 19:11:09,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 408 transitions, 1811 flow [2022-12-05 19:11:09,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 408 transitions, 1807 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-05 19:11:09,850 INFO L231 Difference]: Finished difference. Result has 336 places, 370 transitions, 1334 flow [2022-12-05 19:11:09,850 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1334, PETRI_PLACES=336, PETRI_TRANSITIONS=370} [2022-12-05 19:11:09,851 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, 45 predicate places. [2022-12-05 19:11:09,851 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 370 transitions, 1334 flow [2022-12-05 19:11:09,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:11:09,851 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:11:09,851 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:11:09,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-05 19:11:09,852 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:11:09,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:11:09,852 INFO L85 PathProgramCache]: Analyzing trace with hash -467919542, now seen corresponding path program 1 times [2022-12-05 19:11:09,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:11:09,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984369354] [2022-12-05 19:11:09,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:11:09,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:11:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:11:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 19:11:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:11:09,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984369354] [2022-12-05 19:11:09,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984369354] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:11:09,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:11:09,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:11:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420919827] [2022-12-05 19:11:09,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:11:09,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:11:09,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:11:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:11:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:11:09,941 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 331 [2022-12-05 19:11:09,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 370 transitions, 1334 flow. Second operand has 3 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:11:09,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:11:09,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 331 [2022-12-05 19:11:09,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:11:13,227 INFO L130 PetriNetUnfolder]: 8199/19121 cut-off events. [2022-12-05 19:11:13,227 INFO L131 PetriNetUnfolder]: For 84026/87932 co-relation queries the response was YES. [2022-12-05 19:11:13,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63339 conditions, 19121 events. 8199/19121 cut-off events. For 84026/87932 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 173495 event pairs, 957 based on Foata normal form. 154/17579 useless extension candidates. Maximal degree in co-relation 63312. Up to 7754 conditions per place. [2022-12-05 19:11:13,435 INFO L137 encePairwiseOnDemand]: 325/331 looper letters, 133 selfloop transitions, 5 changer transitions 0/410 dead transitions. [2022-12-05 19:11:13,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 410 transitions, 1883 flow [2022-12-05 19:11:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:11:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:11:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2022-12-05 19:11:13,438 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8952668680765358 [2022-12-05 19:11:13,438 INFO L175 Difference]: Start difference. First operand has 336 places, 370 transitions, 1334 flow. Second operand 3 states and 889 transitions. [2022-12-05 19:11:13,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 410 transitions, 1883 flow [2022-12-05 19:11:13,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 410 transitions, 1853 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 19:11:13,470 INFO L231 Difference]: Finished difference. Result has 338 places, 371 transitions, 1334 flow [2022-12-05 19:11:13,470 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1334, PETRI_PLACES=338, PETRI_TRANSITIONS=371} [2022-12-05 19:11:13,471 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, 47 predicate places. [2022-12-05 19:11:13,471 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 371 transitions, 1334 flow [2022-12-05 19:11:13,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:11:13,471 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:11:13,472 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:11:13,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-05 19:11:13,472 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:11:13,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:11:13,472 INFO L85 PathProgramCache]: Analyzing trace with hash 228399862, now seen corresponding path program 1 times [2022-12-05 19:11:13,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:11:13,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139710502] [2022-12-05 19:11:13,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:11:13,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:11:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:11:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-05 19:11:13,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:11:13,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139710502] [2022-12-05 19:11:13,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139710502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:11:13,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:11:13,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:11:13,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908025870] [2022-12-05 19:11:13,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:11:13,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:11:13,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:11:13,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:11:13,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:11:13,654 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 331 [2022-12-05 19:11:13,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 371 transitions, 1334 flow. Second operand has 6 states, 6 states have (on average 251.33333333333334) internal successors, (1508), 6 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:11:13,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:11:13,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 331 [2022-12-05 19:11:13,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:11:16,062 INFO L130 PetriNetUnfolder]: 4009/14134 cut-off events. [2022-12-05 19:11:16,062 INFO L131 PetriNetUnfolder]: For 33231/35178 co-relation queries the response was YES. [2022-12-05 19:11:16,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36001 conditions, 14134 events. 4009/14134 cut-off events. For 33231/35178 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 148259 event pairs, 618 based on Foata normal form. 3/12598 useless extension candidates. Maximal degree in co-relation 35973. Up to 4856 conditions per place. [2022-12-05 19:11:16,176 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 136 selfloop transitions, 8 changer transitions 31/406 dead transitions. [2022-12-05 19:11:16,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 406 transitions, 1821 flow [2022-12-05 19:11:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:11:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:11:16,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2285 transitions. [2022-12-05 19:11:16,183 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.76703591809332 [2022-12-05 19:11:16,183 INFO L175 Difference]: Start difference. First operand has 338 places, 371 transitions, 1334 flow. Second operand 9 states and 2285 transitions. [2022-12-05 19:11:16,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 406 transitions, 1821 flow [2022-12-05 19:11:16,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 406 transitions, 1811 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 19:11:16,206 INFO L231 Difference]: Finished difference. Result has 346 places, 372 transitions, 1352 flow [2022-12-05 19:11:16,207 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1352, PETRI_PLACES=346, PETRI_TRANSITIONS=372} [2022-12-05 19:11:16,207 INFO L294 CegarLoopForPetriNet]: 291 programPoint places, 55 predicate places. [2022-12-05 19:11:16,207 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 372 transitions, 1352 flow [2022-12-05 19:11:16,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 251.33333333333334) internal successors, (1508), 6 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:11:16,208 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:11:16,208 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:11:16,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-05 19:11:16,208 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:11:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:11:16,209 INFO L85 PathProgramCache]: Analyzing trace with hash 701943867, now seen corresponding path program 1 times [2022-12-05 19:11:16,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:11:16,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015855500] [2022-12-05 19:11:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:11:16,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:11:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:11:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:11:17,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:11:17,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015855500] [2022-12-05 19:11:17,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015855500] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:11:17,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541591407] [2022-12-05 19:11:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:11:17,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:11:17,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:11:17,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:11:17,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 19:11:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:11:17,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-05 19:11:17,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:11:18,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-05 19:11:19,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 19:11:19,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 19:11:19,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 19:11:19,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 19:11:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 19:11:20,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:11:21,688 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:11:21,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 56 [2022-12-05 19:11:21,703 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-05 19:11:21,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 394 treesize of output 385 [2022-12-05 19:11:21,714 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-05 19:11:21,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 378 treesize of output 282 [2022-12-05 19:11:21,727 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-05 19:11:21,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 282 treesize of output 234 [2022-12-05 19:11:21,737 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-05 19:11:21,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 234 treesize of output 210 [2022-12-05 19:11:21,754 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-05 19:11:21,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 98 [2022-12-05 19:11:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 19:11:22,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541591407] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:11:22,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:11:22,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 21] total 58 [2022-12-05 19:11:22,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660474529] [2022-12-05 19:11:22,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:11:22,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-12-05 19:11:22,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:11:22,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-12-05 19:11:22,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=2742, Unknown=25, NotChecked=0, Total=3306 [2022-12-05 19:11:22,326 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 331 [2022-12-05 19:11:22,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 372 transitions, 1352 flow. Second operand has 58 states, 58 states have (on average 139.6551724137931) internal successors, (8100), 58 states have internal predecessors, (8100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:11:22,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:11:22,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 331 [2022-12-05 19:11:22,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand