/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:03:58,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:03:58,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:03:58,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:03:58,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:03:58,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:03:58,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:03:58,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:03:58,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:03:58,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:03:58,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:03:58,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:03:58,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:03:58,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:03:58,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:03:58,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:03:58,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:03:58,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:03:58,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:03:58,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:03:58,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:03:58,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:03:58,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:03:58,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:03:58,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:03:58,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:03:58,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:03:58,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:03:58,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:03:58,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:03:58,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:03:58,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:03:58,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:03:58,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:03:58,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:03:58,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:03:58,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:03:58,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:03:58,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:03:58,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:03:58,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:03:58,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 12:03:58,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:03:58,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:03:58,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:03:58,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:03:58,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:03:58,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:03:58,447 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:03:58,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:03:58,447 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:03:58,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:03:58,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:03:58,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:03:58,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:03:58,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:03:58,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:03:58,449 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:03:58,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:03:58,449 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:03:58,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:03:58,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:03:58,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:03:58,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:03:58,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:03:58,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:03:58,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:03:58,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:03:58,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:03:58,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:03:58,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:03:58,451 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:03:58,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 12:03:58,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:03:58,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:03:58,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:03:58,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:03:58,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:03:58,701 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:03:58,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c [2022-09-16 12:03:58,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a9ef0bbd/bd4ec843b1604b6abec6a4de7dff620e/FLAG5d4461bfd [2022-09-16 12:03:59,128 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:03:59,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c [2022-09-16 12:03:59,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a9ef0bbd/bd4ec843b1604b6abec6a4de7dff620e/FLAG5d4461bfd [2022-09-16 12:03:59,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a9ef0bbd/bd4ec843b1604b6abec6a4de7dff620e [2022-09-16 12:03:59,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:03:59,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:03:59,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:03:59,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:03:59,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:03:59,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588372a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59, skipping insertion in model container [2022-09-16 12:03:59,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:03:59,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:03:59,761 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c[2641,2654] [2022-09-16 12:03:59,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:03:59,781 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:03:59,798 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c[2641,2654] [2022-09-16 12:03:59,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:03:59,813 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:03:59,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59 WrapperNode [2022-09-16 12:03:59,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:03:59,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:03:59,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:03:59,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:03:59,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,873 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 164 [2022-09-16 12:03:59,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:03:59,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:03:59,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:03:59,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:03:59,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:03:59,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:03:59,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:03:59,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:03:59,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:03:59,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:59,957 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) [2022-09-16 12:03:59,964 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 [2022-09-16 12:03:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:03:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 12:03:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 12:03:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 12:03:59,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 12:03:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:03:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:03:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:03:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 12:03:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:03:59,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:03:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:03:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:03:59,997 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 12:04:00,086 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:04:00,088 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:04:00,410 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:04:00,421 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:04:00,421 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 12:04:00,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:04:00 BoogieIcfgContainer [2022-09-16 12:04:00,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:04:00,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:04:00,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:04:00,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:04:00,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:03:59" (1/3) ... [2022-09-16 12:04:00,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12261eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:04:00, skipping insertion in model container [2022-09-16 12:04:00,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:59" (2/3) ... [2022-09-16 12:04:00,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12261eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:04:00, skipping insertion in model container [2022-09-16 12:04:00,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:04:00" (3/3) ... [2022-09-16 12:04:00,432 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2022-09-16 12:04:00,449 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:04:00,450 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-09-16 12:04:00,450 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:04:00,542 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 12:04:00,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 212 transitions, 440 flow [2022-09-16 12:04:00,652 INFO L130 PetriNetUnfolder]: 18/210 cut-off events. [2022-09-16 12:04:00,653 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 12:04:00,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 210 events. 18/210 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 332 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2022-09-16 12:04:00,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 212 transitions, 440 flow [2022-09-16 12:04:00,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 68 transitions, 136 flow [2022-09-16 12:04:00,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:04:00,678 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@64da5226, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:04:00,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-16 12:04:00,692 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-09-16 12:04:00,692 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:04:00,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:00,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:04:00,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-16 12:04:00,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:00,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2075249711, now seen corresponding path program 1 times [2022-09-16 12:04:00,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:00,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240588790] [2022-09-16 12:04:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:00,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:00,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:00,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240588790] [2022-09-16 12:04:00,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240588790] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:00,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:04:00,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:04:00,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829099561] [2022-09-16 12:04:00,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:00,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:04:00,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:04:01,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:04:01,018 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 212 [2022-09-16 12:04:01,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 183.5) internal successors, (734), 4 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:01,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:01,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 212 [2022-09-16 12:04:01,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:01,150 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-09-16 12:04:01,150 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:04:01,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 3/72 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2022-09-16 12:04:01,153 INFO L137 encePairwiseOnDemand]: 203/212 looper letters, 14 selfloop transitions, 4 changer transitions 3/72 dead transitions. [2022-09-16 12:04:01,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 180 flow [2022-09-16 12:04:01,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:04:01,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:04:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 933 transitions. [2022-09-16 12:04:01,170 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.880188679245283 [2022-09-16 12:04:01,170 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 933 transitions. [2022-09-16 12:04:01,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 933 transitions. [2022-09-16 12:04:01,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:01,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 933 transitions. [2022-09-16 12:04:01,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.6) internal successors, (933), 5 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:01,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:01,193 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:01,195 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 136 flow. Second operand 5 states and 933 transitions. [2022-09-16 12:04:01,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 180 flow [2022-09-16 12:04:01,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:04:01,200 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 154 flow [2022-09-16 12:04:01,202 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2022-09-16 12:04:01,205 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2022-09-16 12:04:01,205 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 154 flow [2022-09-16 12:04:01,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.5) internal successors, (734), 4 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:01,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:01,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:04:01,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:04:01,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-16 12:04:01,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:01,208 INFO L85 PathProgramCache]: Analyzing trace with hash -6655179, now seen corresponding path program 1 times [2022-09-16 12:04:01,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:01,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106417541] [2022-09-16 12:04:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:01,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:01,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:01,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106417541] [2022-09-16 12:04:01,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106417541] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:04:01,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593613090] [2022-09-16 12:04:01,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:01,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:01,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:01,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:04:01,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 12:04:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:01,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:04:01,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:04:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:01,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:04:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:01,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593613090] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:04:01,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:04:01,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 12:04:01,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460022944] [2022-09-16 12:04:01,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:04:01,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 12:04:01,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 12:04:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 12:04:01,623 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 212 [2022-09-16 12:04:01,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 184.66666666666666) internal successors, (2216), 12 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:01,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:01,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 212 [2022-09-16 12:04:01,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:01,802 INFO L130 PetriNetUnfolder]: 1/100 cut-off events. [2022-09-16 12:04:01,802 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-09-16 12:04:01,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 100 events. 1/100 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 3/103 useless extension candidates. Maximal degree in co-relation 88. Up to 11 conditions per place. [2022-09-16 12:04:01,804 INFO L137 encePairwiseOnDemand]: 205/212 looper letters, 23 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2022-09-16 12:04:01,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 312 flow [2022-09-16 12:04:01,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 12:04:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 12:04:01,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3320 transitions. [2022-09-16 12:04:01,812 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.870020964360587 [2022-09-16 12:04:01,813 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3320 transitions. [2022-09-16 12:04:01,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3320 transitions. [2022-09-16 12:04:01,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:01,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3320 transitions. [2022-09-16 12:04:01,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.44444444444446) internal successors, (3320), 18 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:01,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 212.0) internal successors, (4028), 19 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:01,835 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 212.0) internal successors, (4028), 19 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:01,835 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 154 flow. Second operand 18 states and 3320 transitions. [2022-09-16 12:04:01,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 312 flow [2022-09-16 12:04:01,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:04:01,841 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 258 flow [2022-09-16 12:04:01,841 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=258, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2022-09-16 12:04:01,842 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2022-09-16 12:04:01,843 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 258 flow [2022-09-16 12:04:01,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 184.66666666666666) internal successors, (2216), 12 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:01,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:01,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:04:01,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 12:04:02,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:02,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-16 12:04:02,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:02,060 INFO L85 PathProgramCache]: Analyzing trace with hash -206310224, now seen corresponding path program 1 times [2022-09-16 12:04:02,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:02,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367441317] [2022-09-16 12:04:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:02,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:02,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:02,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367441317] [2022-09-16 12:04:02,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367441317] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:04:02,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419976777] [2022-09-16 12:04:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:02,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:02,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:02,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:04:02,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 12:04:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:02,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:04:02,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:04:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:02,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:04:02,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419976777] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:02,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:04:02,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:04:02,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513809455] [2022-09-16 12:04:02,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:02,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:04:02,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:04:02,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:04:02,288 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 212 [2022-09-16 12:04:02,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 184.33333333333334) internal successors, (1106), 6 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:02,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:02,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 212 [2022-09-16 12:04:02,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:02,363 INFO L130 PetriNetUnfolder]: 1/96 cut-off events. [2022-09-16 12:04:02,363 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-09-16 12:04:02,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 96 events. 1/96 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 72. Up to 17 conditions per place. [2022-09-16 12:04:02,364 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 15 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2022-09-16 12:04:02,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 293 flow [2022-09-16 12:04:02,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:04:02,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:04:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1292 transitions. [2022-09-16 12:04:02,368 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8706199460916442 [2022-09-16 12:04:02,368 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1292 transitions. [2022-09-16 12:04:02,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1292 transitions. [2022-09-16 12:04:02,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:02,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1292 transitions. [2022-09-16 12:04:02,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.57142857142858) internal successors, (1292), 7 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:02,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:02,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:02,375 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 258 flow. Second operand 7 states and 1292 transitions. [2022-09-16 12:04:02,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 293 flow [2022-09-16 12:04:02,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 261 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 12:04:02,382 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 221 flow [2022-09-16 12:04:02,382 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2022-09-16 12:04:02,383 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2022-09-16 12:04:02,384 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 221 flow [2022-09-16 12:04:02,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 184.33333333333334) internal successors, (1106), 6 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:02,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:02,384 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:04:02,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 12:04:02,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 12:04:02,585 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-16 12:04:02,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1441346769, now seen corresponding path program 2 times [2022-09-16 12:04:02,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:02,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816639559] [2022-09-16 12:04:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:02,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:02,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:02,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816639559] [2022-09-16 12:04:02,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816639559] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:04:02,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808155142] [2022-09-16 12:04:02,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:04:02,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:02,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:02,792 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:04:02,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 12:04:02,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:04:02,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:04:02,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 12:04:02,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:04:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 12:04:03,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:04:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 12:04:03,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808155142] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:04:03,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:04:03,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 12:04:03,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276748532] [2022-09-16 12:04:03,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:04:03,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:04:03,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:03,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:04:03,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:04:03,164 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 212 [2022-09-16 12:04:03,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 221 flow. Second operand has 18 states, 18 states have (on average 168.72222222222223) internal successors, (3037), 18 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:03,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:03,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 212 [2022-09-16 12:04:03,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:03,571 INFO L130 PetriNetUnfolder]: 1/106 cut-off events. [2022-09-16 12:04:03,572 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-09-16 12:04:03,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 106 events. 1/106 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/108 useless extension candidates. Maximal degree in co-relation 121. Up to 7 conditions per place. [2022-09-16 12:04:03,572 INFO L137 encePairwiseOnDemand]: 201/212 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2022-09-16 12:04:03,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 396 flow [2022-09-16 12:04:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 12:04:03,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 12:04:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4018 transitions. [2022-09-16 12:04:03,579 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7897012578616353 [2022-09-16 12:04:03,579 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4018 transitions. [2022-09-16 12:04:03,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4018 transitions. [2022-09-16 12:04:03,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:03,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4018 transitions. [2022-09-16 12:04:03,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 167.41666666666666) internal successors, (4018), 24 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:03,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 212.0) internal successors, (5300), 25 states have internal predecessors, (5300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:03,601 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 212.0) internal successors, (5300), 25 states have internal predecessors, (5300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:03,601 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 221 flow. Second operand 24 states and 4018 transitions. [2022-09-16 12:04:03,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 396 flow [2022-09-16 12:04:03,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 371 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 12:04:03,604 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2022-09-16 12:04:03,604 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2022-09-16 12:04:03,605 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 33 predicate places. [2022-09-16 12:04:03,605 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2022-09-16 12:04:03,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 168.72222222222223) internal successors, (3037), 18 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:03,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-09-16 12:04:03,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-09-16 12:04:03,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-16 12:04:03,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-16 12:04:03,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 12:04:03,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:03,834 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-09-16 12:04:03,837 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 12:04:03,837 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 12:04:03,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:04:03 BasicIcfg [2022-09-16 12:04:03,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 12:04:03,842 INFO L158 Benchmark]: Toolchain (without parser) took 4279.73ms. Allocated memory was 178.3MB in the beginning and 217.1MB in the end (delta: 38.8MB). Free memory was 120.5MB in the beginning and 132.9MB in the end (delta: -12.4MB). Peak memory consumption was 27.4MB. Max. memory is 8.0GB. [2022-09-16 12:04:03,842 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory was 137.9MB in the beginning and 137.9MB in the end (delta: 82.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 12:04:03,843 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.17ms. Allocated memory is still 178.3MB. Free memory was 120.4MB in the beginning and 151.3MB in the end (delta: -31.0MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. [2022-09-16 12:04:03,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.68ms. Allocated memory is still 178.3MB. Free memory was 151.3MB in the beginning and 149.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 12:04:03,843 INFO L158 Benchmark]: Boogie Preprocessor took 47.14ms. Allocated memory is still 178.3MB. Free memory was 149.3MB in the beginning and 147.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 12:04:03,844 INFO L158 Benchmark]: RCFGBuilder took 500.75ms. Allocated memory is still 178.3MB. Free memory was 147.7MB in the beginning and 130.7MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-09-16 12:04:03,844 INFO L158 Benchmark]: TraceAbstraction took 3416.16ms. Allocated memory was 178.3MB in the beginning and 217.1MB in the end (delta: 38.8MB). Free memory was 129.9MB in the beginning and 132.9MB in the end (delta: -3.0MB). Peak memory consumption was 37.1MB. Max. memory is 8.0GB. [2022-09-16 12:04:03,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory was 137.9MB in the beginning and 137.9MB in the end (delta: 82.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 250.17ms. Allocated memory is still 178.3MB. Free memory was 120.4MB in the beginning and 151.3MB in the end (delta: -31.0MB). Peak memory consumption was 13.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.68ms. Allocated memory is still 178.3MB. Free memory was 151.3MB in the beginning and 149.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.14ms. Allocated memory is still 178.3MB. Free memory was 149.3MB in the beginning and 147.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 500.75ms. Allocated memory is still 178.3MB. Free memory was 147.7MB in the beginning and 130.7MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3416.16ms. Allocated memory was 178.3MB in the beginning and 217.1MB in the end (delta: 38.8MB). Free memory was 129.9MB in the beginning and 132.9MB in the end (delta: -3.0MB). Peak memory consumption was 37.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 287 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: 3.3s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 212 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 212 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 243 IncrementalHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 20 mSDtfsCounter, 243 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 366 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=2, InterpolantAutomatonStates: 54, 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, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 509 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 659 ConstructedInterpolants, 0 QuantifiedInterpolants, 1193 SizeOfPredicates, 12 NumberOfNonLiveVariables, 424 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 123/266 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 12:04:03,876 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...