/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 05:41:09,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 05:41:09,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 05:41:09,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 05:41:09,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 05:41:09,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 05:41:09,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 05:41:09,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 05:41:09,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 05:41:09,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 05:41:09,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 05:41:09,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 05:41:09,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 05:41:09,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 05:41:09,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 05:41:09,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 05:41:09,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 05:41:09,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 05:41:09,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 05:41:09,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 05:41:09,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 05:41:09,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 05:41:09,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 05:41:09,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 05:41:09,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 05:41:09,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 05:41:09,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 05:41:09,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 05:41:09,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 05:41:09,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 05:41:09,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 05:41:09,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 05:41:09,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 05:41:09,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 05:41:09,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 05:41:09,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 05:41:09,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 05:41:09,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 05:41:09,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 05:41:09,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 05:41:09,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 05:41:09,337 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-RepeatedSemanticLbeWithPredicates.epf [2022-12-06 05:41:09,365 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 05:41:09,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 05:41:09,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 05:41:09,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 05:41:09,367 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 05:41:09,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 05:41:09,367 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 05:41:09,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 05:41:09,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 05:41:09,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 05:41:09,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 05:41:09,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 05:41:09,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 05:41:09,369 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 05:41:09,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 05:41:09,369 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 05:41:09,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 05:41:09,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 05:41:09,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 05:41:09,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 05:41:09,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 05:41:09,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 05:41:09,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 05:41:09,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 05:41:09,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 05:41:09,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 05:41:09,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 05:41:09,370 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-06 05:41:09,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-06 05:41:09,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 05:41:09,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 05:41:09,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 05:41:09,667 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 05:41:09,669 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 05:41:09,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2022-12-06 05:41:10,792 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 05:41:10,989 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 05:41:10,990 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2022-12-06 05:41:10,996 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97972cd92/89b4cefbc75942b19f9f553a2e55b96e/FLAG1e3ca7cf6 [2022-12-06 05:41:11,011 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97972cd92/89b4cefbc75942b19f9f553a2e55b96e [2022-12-06 05:41:11,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 05:41:11,014 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 05:41:11,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 05:41:11,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 05:41:11,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 05:41:11,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0ebf15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11, skipping insertion in model container [2022-12-06 05:41:11,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 05:41:11,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 05:41:11,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 05:41:11,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 05:41:11,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 05:41:11,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 05:41:11,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 05:41:11,189 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 05:41:11,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 05:41:11,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 05:41:11,206 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-simple-array-sum.wvr.c[2690,2703] [2022-12-06 05:41:11,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 05:41:11,226 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 05:41:11,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 05:41:11,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 05:41:11,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 05:41:11,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 05:41:11,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 05:41:11,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 05:41:11,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 05:41:11,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 05:41:11,260 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-simple-array-sum.wvr.c[2690,2703] [2022-12-06 05:41:11,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 05:41:11,273 INFO L208 MainTranslator]: Completed translation [2022-12-06 05:41:11,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11 WrapperNode [2022-12-06 05:41:11,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 05:41:11,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 05:41:11,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 05:41:11,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 05:41:11,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,310 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 121 [2022-12-06 05:41:11,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 05:41:11,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 05:41:11,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 05:41:11,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 05:41:11,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,336 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 05:41:11,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 05:41:11,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 05:41:11,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 05:41:11,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11" (1/1) ... [2022-12-06 05:41:11,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 05:41:11,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 05:41:11,366 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) [2022-12-06 05:41:11,399 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 [2022-12-06 05:41:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 05:41:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 05:41:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 05:41:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 05:41:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 05:41:11,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 05:41:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 05:41:11,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 05:41:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 05:41:11,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 05:41:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 05:41:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 05:41:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 05:41:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 05:41:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 05:41:11,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 05:41:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 05:41:11,421 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 05:41:11,486 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 05:41:11,487 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 05:41:11,793 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 05:41:11,815 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 05:41:11,815 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-06 05:41:11,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:41:11 BoogieIcfgContainer [2022-12-06 05:41:11,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 05:41:11,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 05:41:11,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 05:41:11,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 05:41:11,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:41:11" (1/3) ... [2022-12-06 05:41:11,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f56eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:41:11, skipping insertion in model container [2022-12-06 05:41:11,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:41:11" (2/3) ... [2022-12-06 05:41:11,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f56eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:41:11, skipping insertion in model container [2022-12-06 05:41:11,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:41:11" (3/3) ... [2022-12-06 05:41:11,822 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2022-12-06 05:41:11,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 05:41:11,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 05:41:11,835 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 05:41:11,910 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-06 05:41:11,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 171 transitions, 366 flow [2022-12-06 05:41:12,026 INFO L130 PetriNetUnfolder]: 16/168 cut-off events. [2022-12-06 05:41:12,027 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 05:41:12,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 168 events. 16/168 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 129. Up to 3 conditions per place. [2022-12-06 05:41:12,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 171 transitions, 366 flow [2022-12-06 05:41:12,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 158 transitions, 334 flow [2022-12-06 05:41:12,039 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:41:12,054 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 158 transitions, 334 flow [2022-12-06 05:41:12,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 158 transitions, 334 flow [2022-12-06 05:41:12,101 INFO L130 PetriNetUnfolder]: 16/158 cut-off events. [2022-12-06 05:41:12,101 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 05:41:12,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 158 events. 16/158 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 129. Up to 3 conditions per place. [2022-12-06 05:41:12,106 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 158 transitions, 334 flow [2022-12-06 05:41:12,106 INFO L188 LiptonReduction]: Number of co-enabled transitions 1720 [2022-12-06 05:41:17,094 INFO L203 LiptonReduction]: Total number of compositions: 129 [2022-12-06 05:41:17,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 05:41:17,108 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=REPEATED_LIPTON_PN, 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;@796f2a07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 05:41:17,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-06 05:41:17,112 INFO L130 PetriNetUnfolder]: 6/28 cut-off events. [2022-12-06 05:41:17,112 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 05:41:17,112 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:41:17,112 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] [2022-12-06 05:41:17,113 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 1 more)] === [2022-12-06 05:41:17,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:41:17,116 INFO L85 PathProgramCache]: Analyzing trace with hash -662271631, now seen corresponding path program 1 times [2022-12-06 05:41:17,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:41:17,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097570351] [2022-12-06 05:41:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:41:17,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:41:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:41:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 05:41:17,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:41:17,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097570351] [2022-12-06 05:41:17,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097570351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 05:41:17,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 05:41:17,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 05:41:17,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293984394] [2022-12-06 05:41:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 05:41:17,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 05:41:17,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:41:17,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 05:41:17,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 05:41:17,670 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 29 [2022-12-06 05:41:17,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 05:41:17,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:41:17,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 29 [2022-12-06 05:41:17,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:41:17,838 INFO L130 PetriNetUnfolder]: 853/1153 cut-off events. [2022-12-06 05:41:17,838 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-12-06 05:41:17,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 1153 events. 853/1153 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4243 event pairs, 310 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 1073. Up to 740 conditions per place. [2022-12-06 05:41:17,847 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 5 changer transitions 1/53 dead transitions. [2022-12-06 05:41:17,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 242 flow [2022-12-06 05:41:17,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 05:41:17,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 05:41:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2022-12-06 05:41:17,857 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2022-12-06 05:41:17,858 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 4 states and 63 transitions. [2022-12-06 05:41:17,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 242 flow [2022-12-06 05:41:17,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 53 transitions, 218 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-06 05:41:17,865 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 98 flow [2022-12-06 05:41:17,866 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2022-12-06 05:41:17,869 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2022-12-06 05:41:17,869 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 05:41:17,870 INFO L89 Accepts]: Start accepts. Operand has 32 places, 33 transitions, 98 flow [2022-12-06 05:41:17,872 INFO L95 Accepts]: Finished accepts. [2022-12-06 05:41:17,872 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:41:17,872 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 33 transitions, 98 flow [2022-12-06 05:41:17,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 33 transitions, 98 flow [2022-12-06 05:41:17,889 INFO L130 PetriNetUnfolder]: 11/56 cut-off events. [2022-12-06 05:41:17,889 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 05:41:17,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 56 events. 11/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 121 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 36. Up to 6 conditions per place. [2022-12-06 05:41:17,890 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 33 transitions, 98 flow [2022-12-06 05:41:17,891 INFO L188 LiptonReduction]: Number of co-enabled transitions 260 [2022-12-06 05:41:19,967 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-06 05:41:19,971 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2102 [2022-12-06 05:41:19,973 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 95 flow [2022-12-06 05:41:19,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 05:41:19,975 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:41:19,975 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] [2022-12-06 05:41:19,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 05:41:19,976 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 1 more)] === [2022-12-06 05:41:19,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:41:19,976 INFO L85 PathProgramCache]: Analyzing trace with hash 977102354, now seen corresponding path program 1 times [2022-12-06 05:41:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:41:19,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924663933] [2022-12-06 05:41:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:41:19,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:41:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:41:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 05:41:20,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:41:20,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924663933] [2022-12-06 05:41:20,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924663933] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 05:41:20,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 05:41:20,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 05:41:20,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681014754] [2022-12-06 05:41:20,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 05:41:20,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 05:41:20,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:41:20,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 05:41:20,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 05:41:20,090 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2022-12-06 05:41:20,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 05:41:20,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:41:20,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2022-12-06 05:41:20,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:41:20,270 INFO L130 PetriNetUnfolder]: 1269/1719 cut-off events. [2022-12-06 05:41:20,270 INFO L131 PetriNetUnfolder]: For 248/248 co-relation queries the response was YES. [2022-12-06 05:41:20,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3792 conditions, 1719 events. 1269/1719 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6893 event pairs, 601 based on Foata normal form. 0/1193 useless extension candidates. Maximal degree in co-relation 2340. Up to 1041 conditions per place. [2022-12-06 05:41:20,278 INFO L137 encePairwiseOnDemand]: 26/30 looper letters, 50 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2022-12-06 05:41:20,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 56 transitions, 261 flow [2022-12-06 05:41:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 05:41:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 05:41:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2022-12-06 05:41:20,281 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2022-12-06 05:41:20,281 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 95 flow. Second operand 4 states and 64 transitions. [2022-12-06 05:41:20,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 56 transitions, 261 flow [2022-12-06 05:41:20,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 56 transitions, 248 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-06 05:41:20,283 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 96 flow [2022-12-06 05:41:20,283 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2022-12-06 05:41:20,284 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-12-06 05:41:20,284 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 05:41:20,284 INFO L89 Accepts]: Start accepts. Operand has 33 places, 33 transitions, 96 flow [2022-12-06 05:41:20,285 INFO L95 Accepts]: Finished accepts. [2022-12-06 05:41:20,285 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:41:20,285 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 33 transitions, 96 flow [2022-12-06 05:41:20,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 33 transitions, 96 flow [2022-12-06 05:41:20,291 INFO L130 PetriNetUnfolder]: 18/77 cut-off events. [2022-12-06 05:41:20,291 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 05:41:20,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 77 events. 18/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 206 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 62. Up to 13 conditions per place. [2022-12-06 05:41:20,292 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 33 transitions, 96 flow [2022-12-06 05:41:20,292 INFO L188 LiptonReduction]: Number of co-enabled transitions 260 [2022-12-06 05:41:20,494 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-06 05:41:20,495 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 211 [2022-12-06 05:41:20,495 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 92 flow [2022-12-06 05:41:20,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 05:41:20,495 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:41:20,495 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] [2022-12-06 05:41:20,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 05:41:20,495 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 1 more)] === [2022-12-06 05:41:20,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:41:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1369961760, now seen corresponding path program 1 times [2022-12-06 05:41:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:41:20,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32401306] [2022-12-06 05:41:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:41:20,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:41:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:41:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 05:41:20,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:41:20,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32401306] [2022-12-06 05:41:20,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32401306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 05:41:20,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 05:41:20,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 05:41:20,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751690775] [2022-12-06 05:41:20,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 05:41:20,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 05:41:20,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:41:20,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 05:41:20,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-06 05:41:20,555 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 30 [2022-12-06 05:41:20,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 05:41:20,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:41:20,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 30 [2022-12-06 05:41:20,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:41:20,698 INFO L130 PetriNetUnfolder]: 1173/1617 cut-off events. [2022-12-06 05:41:20,698 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-12-06 05:41:20,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 1617 events. 1173/1617 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6655 event pairs, 291 based on Foata normal form. 66/1167 useless extension candidates. Maximal degree in co-relation 2062. Up to 793 conditions per place. [2022-12-06 05:41:20,706 INFO L137 encePairwiseOnDemand]: 27/30 looper letters, 63 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2022-12-06 05:41:20,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 67 transitions, 310 flow [2022-12-06 05:41:20,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 05:41:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 05:41:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2022-12-06 05:41:20,707 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6 [2022-12-06 05:41:20,707 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 92 flow. Second operand 4 states and 72 transitions. [2022-12-06 05:41:20,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 67 transitions, 310 flow [2022-12-06 05:41:20,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 67 transitions, 296 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-06 05:41:20,709 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 91 flow [2022-12-06 05:41:20,709 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2022-12-06 05:41:20,710 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2022-12-06 05:41:20,710 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 05:41:20,710 INFO L89 Accepts]: Start accepts. Operand has 34 places, 32 transitions, 91 flow [2022-12-06 05:41:20,710 INFO L95 Accepts]: Finished accepts. [2022-12-06 05:41:20,710 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:41:20,711 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 32 transitions, 91 flow [2022-12-06 05:41:20,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 32 transitions, 91 flow [2022-12-06 05:41:20,715 INFO L130 PetriNetUnfolder]: 11/60 cut-off events. [2022-12-06 05:41:20,715 INFO L131 PetriNetUnfolder]: For 2/3 co-relation queries the response was YES. [2022-12-06 05:41:20,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 60 events. 11/60 cut-off events. For 2/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 0 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 63. Up to 8 conditions per place. [2022-12-06 05:41:20,715 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 32 transitions, 91 flow [2022-12-06 05:41:20,715 INFO L188 LiptonReduction]: Number of co-enabled transitions 262 [2022-12-06 05:41:20,718 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 05:41:20,718 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 8 [2022-12-06 05:41:20,719 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 91 flow [2022-12-06 05:41:20,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 05:41:20,719 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:41:20,719 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] [2022-12-06 05:41:20,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 05:41:20,719 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 1 more)] === [2022-12-06 05:41:20,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:41:20,719 INFO L85 PathProgramCache]: Analyzing trace with hash 236161011, now seen corresponding path program 1 times [2022-12-06 05:41:20,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:41:20,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144954838] [2022-12-06 05:41:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:41:20,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:41:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:41:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 05:41:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:41:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144954838] [2022-12-06 05:41:20,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144954838] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 05:41:20,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 05:41:20,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 05:41:20,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609156988] [2022-12-06 05:41:20,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 05:41:20,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 05:41:20,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:41:20,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 05:41:20,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-06 05:41:20,767 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 30 [2022-12-06 05:41:20,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 05:41:20,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:41:20,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 30 [2022-12-06 05:41:20,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:41:20,916 INFO L130 PetriNetUnfolder]: 1182/1637 cut-off events. [2022-12-06 05:41:20,917 INFO L131 PetriNetUnfolder]: For 481/505 co-relation queries the response was YES. [2022-12-06 05:41:20,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3648 conditions, 1637 events. 1182/1637 cut-off events. For 481/505 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6667 event pairs, 475 based on Foata normal form. 24/1232 useless extension candidates. Maximal degree in co-relation 2239. Up to 666 conditions per place. [2022-12-06 05:41:20,923 INFO L137 encePairwiseOnDemand]: 26/30 looper letters, 62 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2022-12-06 05:41:20,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 68 transitions, 311 flow [2022-12-06 05:41:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 05:41:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 05:41:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2022-12-06 05:41:20,925 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2022-12-06 05:41:20,925 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 91 flow. Second operand 4 states and 73 transitions. [2022-12-06 05:41:20,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 68 transitions, 311 flow [2022-12-06 05:41:20,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 68 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-06 05:41:20,926 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 111 flow [2022-12-06 05:41:20,927 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2022-12-06 05:41:20,927 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2022-12-06 05:41:20,927 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 05:41:20,927 INFO L89 Accepts]: Start accepts. Operand has 38 places, 34 transitions, 111 flow [2022-12-06 05:41:20,928 INFO L95 Accepts]: Finished accepts. [2022-12-06 05:41:20,928 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:41:20,928 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 34 transitions, 111 flow [2022-12-06 05:41:20,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 34 transitions, 111 flow [2022-12-06 05:41:20,933 INFO L130 PetriNetUnfolder]: 11/62 cut-off events. [2022-12-06 05:41:20,933 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2022-12-06 05:41:20,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 62 events. 11/62 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 149 event pairs, 0 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 75. Up to 8 conditions per place. [2022-12-06 05:41:20,934 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 34 transitions, 111 flow [2022-12-06 05:41:20,934 INFO L188 LiptonReduction]: Number of co-enabled transitions 310 [2022-12-06 05:41:20,939 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-06 05:41:20,939 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 12 [2022-12-06 05:41:20,940 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 105 flow [2022-12-06 05:41:20,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 05:41:20,940 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:41:20,940 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] [2022-12-06 05:41:20,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 05:41:20,940 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 1 more)] === [2022-12-06 05:41:20,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:41:20,940 INFO L85 PathProgramCache]: Analyzing trace with hash -691636313, now seen corresponding path program 1 times [2022-12-06 05:41:20,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:41:20,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281494401] [2022-12-06 05:41:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:41:20,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:41:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:41:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 05:41:20,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:41:20,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281494401] [2022-12-06 05:41:20,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281494401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 05:41:20,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 05:41:20,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 05:41:20,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129359954] [2022-12-06 05:41:20,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 05:41:20,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 05:41:20,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:41:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 05:41:20,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-06 05:41:20,999 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 30 [2022-12-06 05:41:20,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 05:41:20,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:41:20,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 30 [2022-12-06 05:41:20,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:41:21,078 INFO L130 PetriNetUnfolder]: 352/541 cut-off events. [2022-12-06 05:41:21,078 INFO L131 PetriNetUnfolder]: For 200/236 co-relation queries the response was YES. [2022-12-06 05:41:21,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 541 events. 352/541 cut-off events. For 200/236 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2203 event pairs, 144 based on Foata normal form. 36/535 useless extension candidates. Maximal degree in co-relation 639. Up to 268 conditions per place. [2022-12-06 05:41:21,079 INFO L137 encePairwiseOnDemand]: 26/30 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2022-12-06 05:41:21,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 253 flow [2022-12-06 05:41:21,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 05:41:21,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 05:41:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2022-12-06 05:41:21,080 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-06 05:41:21,080 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 105 flow. Second operand 4 states and 60 transitions. [2022-12-06 05:41:21,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 253 flow [2022-12-06 05:41:21,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 249 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-06 05:41:21,082 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2022-12-06 05:41:21,082 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2022-12-06 05:41:21,082 INFO L294 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2022-12-06 05:41:21,082 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:41:21,082 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 0 transitions, 0 flow [2022-12-06 05:41:21,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2022-12-06 05:41:21,083 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-06 05:41:21,083 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 05:41:21,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2022-12-06 05:41:21,083 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 0 places, 0 transitions, 0 flow [2022-12-06 05:41:21,083 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 05:41:21,083 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 05:41:21,084 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2 [2022-12-06 05:41:21,084 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-06 05:41:21,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 05:41:21,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-06 05:41:21,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-06 05:41:21,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-06 05:41:21,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-06 05:41:21,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 05:41:21,086 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-06 05:41:21,088 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 05:41:21,088 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 05:41:21,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:41:21 BasicIcfg [2022-12-06 05:41:21,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 05:41:21,091 INFO L158 Benchmark]: Toolchain (without parser) took 10076.98ms. Allocated memory was 186.6MB in the beginning and 312.5MB in the end (delta: 125.8MB). Free memory was 163.0MB in the beginning and 255.5MB in the end (delta: -92.4MB). Peak memory consumption was 33.1MB. Max. memory is 8.0GB. [2022-12-06 05:41:21,091 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 162.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 05:41:21,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.22ms. Allocated memory is still 186.6MB. Free memory was 162.7MB in the beginning and 150.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-06 05:41:21,091 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.38ms. Allocated memory is still 186.6MB. Free memory was 150.1MB in the beginning and 148.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 05:41:21,091 INFO L158 Benchmark]: Boogie Preprocessor took 27.41ms. Allocated memory is still 186.6MB. Free memory was 148.5MB in the beginning and 146.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 05:41:21,092 INFO L158 Benchmark]: RCFGBuilder took 477.62ms. Allocated memory is still 186.6MB. Free memory was 146.4MB in the beginning and 127.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-06 05:41:21,092 INFO L158 Benchmark]: TraceAbstraction took 9271.92ms. Allocated memory was 186.6MB in the beginning and 312.5MB in the end (delta: 125.8MB). Free memory was 127.0MB in the beginning and 255.5MB in the end (delta: -128.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 05:41:21,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 162.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 259.22ms. Allocated memory is still 186.6MB. Free memory was 162.7MB in the beginning and 150.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.38ms. Allocated memory is still 186.6MB. Free memory was 150.1MB in the beginning and 148.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.41ms. Allocated memory is still 186.6MB. Free memory was 148.5MB in the beginning and 146.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 477.62ms. Allocated memory is still 186.6MB. Free memory was 146.4MB in the beginning and 127.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 9271.92ms. Allocated memory was 186.6MB in the beginning and 312.5MB in the end (delta: 125.8MB). Free memory was 127.0MB in the beginning and 255.5MB in the end (delta: -128.4MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 152 PlacesBefore, 33 PlacesAfterwards, 158 TransitionsBefore, 29 TransitionsAfterwards, 1720 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 86 TrivialYvCompositions, 33 ConcurrentYvCompositions, 10 ChoiceCompositions, 129 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 927, independent: 907, independent conditional: 907, independent unconditional: 0, dependent: 20, dependent conditional: 20, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 927, independent: 907, independent conditional: 0, independent unconditional: 907, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 927, independent: 907, independent conditional: 0, independent unconditional: 907, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 927, independent: 907, independent conditional: 0, independent unconditional: 907, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 889, independent: 876, independent conditional: 0, independent unconditional: 876, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 889, independent: 876, independent conditional: 0, independent unconditional: 876, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 927, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 889, unknown conditional: 0, unknown unconditional: 889] , Statistics on independence cache: Total cache size (in pairs): 1385, Positive cache size: 1372, Positive conditional cache size: 0, Positive unconditional cache size: 1372, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 32 PlacesBefore, 31 PlacesAfterwards, 33 TransitionsBefore, 32 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 60, independent: 52, independent conditional: 52, independent unconditional: 0, dependent: 8, dependent conditional: 8, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 60, independent: 52, independent conditional: 6, independent unconditional: 46, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 60, independent: 52, independent conditional: 6, independent unconditional: 46, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 60, independent: 52, independent conditional: 6, independent unconditional: 46, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 20, independent: 18, independent conditional: 2, independent unconditional: 16, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 20, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 1, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 23, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 23, dependent conditional: 22, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 60, independent: 34, independent conditional: 4, independent unconditional: 30, dependent: 6, dependent conditional: 1, dependent unconditional: 5, unknown: 20, unknown conditional: 3, unknown unconditional: 17] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 18, Positive conditional cache size: 2, Positive unconditional cache size: 16, Negative cache size: 2, Negative conditional cache size: 1, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 33 PlacesBefore, 32 PlacesAfterwards, 33 TransitionsBefore, 32 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 42, independent: 36, independent conditional: 36, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 42, independent: 36, independent conditional: 4, independent unconditional: 32, dependent: 6, dependent conditional: 2, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 42, independent: 36, independent conditional: 4, independent unconditional: 32, dependent: 6, dependent conditional: 2, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 42, independent: 36, independent conditional: 4, independent unconditional: 32, dependent: 6, dependent conditional: 2, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 42, independent: 36, independent conditional: 4, independent unconditional: 32, dependent: 6, dependent conditional: 2, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 18, Positive conditional cache size: 2, Positive unconditional cache size: 16, Negative cache size: 2, Negative conditional cache size: 1, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 34 PlacesBefore, 34 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 262 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, independent: 19, independent conditional: 19, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 22, independent: 19, independent conditional: 3, independent unconditional: 16, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 22, independent: 19, independent conditional: 2, independent unconditional: 17, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 22, independent: 19, independent conditional: 2, independent unconditional: 17, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22, independent: 19, independent conditional: 2, independent unconditional: 17, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 2, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 1, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 1, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 38 PlacesBefore, 38 PlacesAfterwards, 34 TransitionsBefore, 33 TransitionsAfterwards, 310 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 67, independent: 60, independent conditional: 60, independent unconditional: 0, dependent: 7, dependent conditional: 7, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 67, independent: 60, independent conditional: 28, independent unconditional: 32, dependent: 7, dependent conditional: 2, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 67, independent: 60, independent conditional: 18, independent unconditional: 42, dependent: 7, dependent conditional: 2, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 67, independent: 60, independent conditional: 18, independent unconditional: 42, dependent: 7, dependent conditional: 2, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 21, independent: 19, independent conditional: 11, independent unconditional: 8, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 21, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 67, independent: 41, independent conditional: 7, independent unconditional: 34, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 21, unknown conditional: 13, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 37, Positive conditional cache size: 13, Positive unconditional cache size: 24, Negative cache size: 5, Negative conditional cache size: 3, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 10, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 0 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 37, Positive conditional cache size: 13, Positive unconditional cache size: 24, Negative cache size: 5, Negative conditional cache size: 3, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 103]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 191 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 146 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 146 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 493 IncrementalHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 4 mSDtfsCounter, 493 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=4, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 667 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-06 05:41:21,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...