/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/pthread/sync01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:29:19,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:29:19,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:29:19,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:29:19,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:29:19,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:29:19,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:29:19,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:29:19,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:29:19,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:29:19,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:29:19,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:29:19,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:29:19,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:29:19,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:29:19,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:29:19,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:29:19,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:29:19,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:29:19,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:29:19,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:29:19,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:29:19,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:29:19,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:29:19,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:29:19,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:29:19,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:29:19,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:29:19,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:29:19,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:29:19,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:29:19,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:29:19,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:29:19,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:29:19,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:29:19,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:29:19,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:29:19,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:29:19,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:29:19,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:29:19,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:29:19,309 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 11:29:19,344 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:29:19,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:29:19,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:29:19,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:29:19,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:29:19,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:29:19,345 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:29:19,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:29:19,346 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:29:19,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:29:19,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:29:19,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:29:19,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:29:19,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:29:19,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:29:19,346 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:29:19,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:29:19,347 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:29:19,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:29:19,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:29:19,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:29:19,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:29:19,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:29:19,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:29:19,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:29:19,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:29:19,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:29:19,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:29:19,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:29:19,348 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:29:19,348 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:29:19,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:29:19,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:29:19,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:29:19,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:29:19,557 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:29:19,558 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:29:19,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2022-09-16 11:29:19,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dde27677/6fb470f6b2944b6892f72511daf3c3b2/FLAGc0e876be5 [2022-09-16 11:29:20,089 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:29:20,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2022-09-16 11:29:20,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dde27677/6fb470f6b2944b6892f72511daf3c3b2/FLAGc0e876be5 [2022-09-16 11:29:20,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dde27677/6fb470f6b2944b6892f72511daf3c3b2 [2022-09-16 11:29:20,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:29:20,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:29:20,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:29:20,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:29:20,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:29:20,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:29:20" (1/1) ... [2022-09-16 11:29:20,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58afff6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20, skipping insertion in model container [2022-09-16 11:29:20,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:29:20" (1/1) ... [2022-09-16 11:29:20,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:29:20,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:29:20,628 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i[42004,42017] [2022-09-16 11:29:20,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:29:20,640 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:29:20,694 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i[42004,42017] [2022-09-16 11:29:20,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:29:20,756 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:29:20,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20 WrapperNode [2022-09-16 11:29:20,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:29:20,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:29:20,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:29:20,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:29:20,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20" (1/1) ... [2022-09-16 11:29:20,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20" (1/1) ... [2022-09-16 11:29:20,826 INFO L138 Inliner]: procedures = 268, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2022-09-16 11:29:20,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:29:20,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:29:20,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:29:20,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:29:20,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20" (1/1) ... [2022-09-16 11:29:20,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20" (1/1) ... [2022-09-16 11:29:20,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20" (1/1) ... [2022-09-16 11:29:20,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20" (1/1) ... [2022-09-16 11:29:20,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20" (1/1) ... [2022-09-16 11:29:20,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20" (1/1) ... [2022-09-16 11:29:20,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20" (1/1) ... [2022-09-16 11:29:20,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:29:20,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:29:20,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:29:20,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:29:20,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20" (1/1) ... [2022-09-16 11:29:20,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:29:20,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:20,903 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 11:29:20,926 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 11:29:20,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:29:20,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:29:20,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:29:20,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:29:20,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:29:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:29:20,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:29:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:29:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:29:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:29:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:29:20,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:29:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:29:20,951 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 11:29:21,083 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:29:21,085 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:29:21,294 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:29:21,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:29:21,300 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 11:29:21,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:29:21 BoogieIcfgContainer [2022-09-16 11:29:21,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:29:21,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:29:21,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:29:21,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:29:21,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:29:20" (1/3) ... [2022-09-16 11:29:21,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d67b2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:29:21, skipping insertion in model container [2022-09-16 11:29:21,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:20" (2/3) ... [2022-09-16 11:29:21,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d67b2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:29:21, skipping insertion in model container [2022-09-16 11:29:21,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:29:21" (3/3) ... [2022-09-16 11:29:21,316 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2022-09-16 11:29:21,331 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:29:21,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-09-16 11:29:21,331 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:29:21,384 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:29:21,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 114 transitions, 244 flow [2022-09-16 11:29:21,459 INFO L130 PetriNetUnfolder]: 5/112 cut-off events. [2022-09-16 11:29:21,459 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:29:21,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 112 events. 5/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2022-09-16 11:29:21,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 114 transitions, 244 flow [2022-09-16 11:29:21,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 98 transitions, 205 flow [2022-09-16 11:29:21,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:29:21,481 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;@23f794a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:29:21,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-09-16 11:29:21,499 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-09-16 11:29:21,500 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:29:21,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:21,500 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] [2022-09-16 11:29:21,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 11:29:21,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:21,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1607780257, now seen corresponding path program 1 times [2022-09-16 11:29:21,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:21,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121331330] [2022-09-16 11:29:21,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:21,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:21,824 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 11:29:21,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:21,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121331330] [2022-09-16 11:29:21,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121331330] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:21,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:21,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904859833] [2022-09-16 11:29:21,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:21,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:29:21,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:21,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:29:21,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:29:21,875 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 114 [2022-09-16 11:29:21,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 11:29:21,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:21,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 114 [2022-09-16 11:29:21,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:21,967 INFO L130 PetriNetUnfolder]: 10/119 cut-off events. [2022-09-16 11:29:21,967 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-16 11:29:21,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 119 events. 10/119 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 141 event pairs, 3 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 93. Up to 15 conditions per place. [2022-09-16 11:29:21,970 INFO L137 encePairwiseOnDemand]: 108/114 looper letters, 9 selfloop transitions, 2 changer transitions 9/93 dead transitions. [2022-09-16 11:29:21,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 93 transitions, 221 flow [2022-09-16 11:29:21,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:29:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:29:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2022-09-16 11:29:21,987 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8771929824561403 [2022-09-16 11:29:21,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2022-09-16 11:29:21,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2022-09-16 11:29:21,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:21,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2022-09-16 11:29:21,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 11:29:22,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 11:29:22,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 11:29:22,008 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 205 flow. Second operand 3 states and 300 transitions. [2022-09-16 11:29:22,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 93 transitions, 221 flow [2022-09-16 11:29:22,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:29:22,015 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 177 flow [2022-09-16 11:29:22,017 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2022-09-16 11:29:22,023 INFO L287 CegarLoopForPetriNet]: 101 programPoint places, -3 predicate places. [2022-09-16 11:29:22,024 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 177 flow [2022-09-16 11:29:22,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 11:29:22,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:22,024 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, 1, 1, 1] [2022-09-16 11:29:22,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:29:22,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 11:29:22,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:22,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2089723124, now seen corresponding path program 1 times [2022-09-16 11:29:22,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:22,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431930556] [2022-09-16 11:29:22,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:22,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:22,117 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 11:29:22,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:22,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431930556] [2022-09-16 11:29:22,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431930556] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:22,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:22,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:22,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858609287] [2022-09-16 11:29:22,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:22,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:29:22,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:22,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:29:22,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:29:22,121 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2022-09-16 11:29:22,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 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 11:29:22,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:22,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2022-09-16 11:29:22,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:22,188 INFO L130 PetriNetUnfolder]: 19/123 cut-off events. [2022-09-16 11:29:22,190 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-09-16 11:29:22,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 123 events. 19/123 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 190 event pairs, 2 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 106. Up to 15 conditions per place. [2022-09-16 11:29:22,193 INFO L137 encePairwiseOnDemand]: 108/114 looper letters, 14 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2022-09-16 11:29:22,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 221 flow [2022-09-16 11:29:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:29:22,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:29:22,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 465 transitions. [2022-09-16 11:29:22,201 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8157894736842105 [2022-09-16 11:29:22,201 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 465 transitions. [2022-09-16 11:29:22,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 465 transitions. [2022-09-16 11:29:22,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:22,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 465 transitions. [2022-09-16 11:29:22,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 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 11:29:22,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 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 11:29:22,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 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 11:29:22,206 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 177 flow. Second operand 5 states and 465 transitions. [2022-09-16 11:29:22,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 221 flow [2022-09-16 11:29:22,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 217 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:29:22,209 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 177 flow [2022-09-16 11:29:22,209 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2022-09-16 11:29:22,210 INFO L287 CegarLoopForPetriNet]: 101 programPoint places, -12 predicate places. [2022-09-16 11:29:22,210 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 177 flow [2022-09-16 11:29:22,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 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 11:29:22,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:22,211 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:29:22,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:29:22,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 11:29:22,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:22,213 INFO L85 PathProgramCache]: Analyzing trace with hash -127537932, now seen corresponding path program 1 times [2022-09-16 11:29:22,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:22,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381718334] [2022-09-16 11:29:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:22,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:22,311 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 11:29:22,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:22,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381718334] [2022-09-16 11:29:22,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381718334] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:22,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:22,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:29:22,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33536629] [2022-09-16 11:29:22,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:22,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:29:22,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:22,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:29:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:29:22,316 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 114 [2022-09-16 11:29:22,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 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 11:29:22,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:22,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 114 [2022-09-16 11:29:22,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:22,403 INFO L130 PetriNetUnfolder]: 8/112 cut-off events. [2022-09-16 11:29:22,403 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-16 11:29:22,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 112 events. 8/112 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 2 based on Foata normal form. 11/121 useless extension candidates. Maximal degree in co-relation 73. Up to 16 conditions per place. [2022-09-16 11:29:22,405 INFO L137 encePairwiseOnDemand]: 107/114 looper letters, 17 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2022-09-16 11:29:22,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 243 flow [2022-09-16 11:29:22,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:29:22,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:29:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 427 transitions. [2022-09-16 11:29:22,409 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7491228070175439 [2022-09-16 11:29:22,409 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 427 transitions. [2022-09-16 11:29:22,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 427 transitions. [2022-09-16 11:29:22,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:22,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 427 transitions. [2022-09-16 11:29:22,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 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 11:29:22,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 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 11:29:22,413 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 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 11:29:22,414 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 177 flow. Second operand 5 states and 427 transitions. [2022-09-16 11:29:22,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 243 flow [2022-09-16 11:29:22,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 235 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:29:22,418 INFO L231 Difference]: Finished difference. Result has 89 places, 84 transitions, 195 flow [2022-09-16 11:29:22,418 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=89, PETRI_TRANSITIONS=84} [2022-09-16 11:29:22,420 INFO L287 CegarLoopForPetriNet]: 101 programPoint places, -12 predicate places. [2022-09-16 11:29:22,420 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 84 transitions, 195 flow [2022-09-16 11:29:22,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 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 11:29:22,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:22,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:29:22,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:29:22,421 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 11:29:22,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1166318549, now seen corresponding path program 1 times [2022-09-16 11:29:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:22,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808913580] [2022-09-16 11:29:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:22,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:22,521 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 11:29:22,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:22,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808913580] [2022-09-16 11:29:22,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808913580] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:22,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:22,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:22,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576482485] [2022-09-16 11:29:22,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:22,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:29:22,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:22,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:29:22,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:29:22,526 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2022-09-16 11:29:22,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 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 11:29:22,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:22,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2022-09-16 11:29:22,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:22,563 INFO L130 PetriNetUnfolder]: 5/103 cut-off events. [2022-09-16 11:29:22,564 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-16 11:29:22,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 103 events. 5/103 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 1 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 72. Up to 15 conditions per place. [2022-09-16 11:29:22,565 INFO L137 encePairwiseOnDemand]: 109/114 looper letters, 8 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2022-09-16 11:29:22,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 217 flow [2022-09-16 11:29:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:29:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:29:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2022-09-16 11:29:22,566 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8092105263157895 [2022-09-16 11:29:22,566 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2022-09-16 11:29:22,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2022-09-16 11:29:22,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:22,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2022-09-16 11:29:22,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 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 11:29:22,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 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 11:29:22,569 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 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 11:29:22,569 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 195 flow. Second operand 4 states and 369 transitions. [2022-09-16 11:29:22,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 217 flow [2022-09-16 11:29:22,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 83 transitions, 217 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:29:22,572 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 201 flow [2022-09-16 11:29:22,572 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2022-09-16 11:29:22,573 INFO L287 CegarLoopForPetriNet]: 101 programPoint places, -10 predicate places. [2022-09-16 11:29:22,573 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 201 flow [2022-09-16 11:29:22,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 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 11:29:22,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:22,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:29:22,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:29:22,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 11:29:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:22,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1796136942, now seen corresponding path program 1 times [2022-09-16 11:29:22,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:22,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916093833] [2022-09-16 11:29:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:22,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:22,683 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 11:29:22,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:22,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916093833] [2022-09-16 11:29:22,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916093833] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:22,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:22,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:29:22,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994788705] [2022-09-16 11:29:22,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:22,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:29:22,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:22,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:29:22,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:29:22,686 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 114 [2022-09-16 11:29:22,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 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 11:29:22,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:22,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 114 [2022-09-16 11:29:22,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:22,762 INFO L130 PetriNetUnfolder]: 5/102 cut-off events. [2022-09-16 11:29:22,763 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-09-16 11:29:22,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 102 events. 5/102 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 1 based on Foata normal form. 1/102 useless extension candidates. Maximal degree in co-relation 96. Up to 9 conditions per place. [2022-09-16 11:29:22,765 INFO L137 encePairwiseOnDemand]: 107/114 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2022-09-16 11:29:22,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 83 transitions, 231 flow [2022-09-16 11:29:22,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:29:22,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:29:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 604 transitions. [2022-09-16 11:29:22,767 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7568922305764411 [2022-09-16 11:29:22,767 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 604 transitions. [2022-09-16 11:29:22,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 604 transitions. [2022-09-16 11:29:22,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:22,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 604 transitions. [2022-09-16 11:29:22,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 0 states have call successors, (0), 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 11:29:22,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 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 11:29:22,771 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 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 11:29:22,771 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 201 flow. Second operand 7 states and 604 transitions. [2022-09-16 11:29:22,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 83 transitions, 231 flow [2022-09-16 11:29:22,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 83 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:29:22,774 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2022-09-16 11:29:22,774 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2022-09-16 11:29:22,776 INFO L287 CegarLoopForPetriNet]: 101 programPoint places, -7 predicate places. [2022-09-16 11:29:22,776 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2022-09-16 11:29:22,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 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 11:29:22,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2022-09-16 11:29:22,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-09-16 11:29:22,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-09-16 11:29:22,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-09-16 11:29:22,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2022-09-16 11:29:22,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2022-09-16 11:29:22,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-09-16 11:29:22,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-09-16 11:29:22,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-09-16 11:29:22,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-09-16 11:29:22,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:29:22,781 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-09-16 11:29:22,785 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:29:22,785 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:29:22,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:29:22 BasicIcfg [2022-09-16 11:29:22,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:29:22,796 INFO L158 Benchmark]: Toolchain (without parser) took 2674.84ms. Allocated memory was 191.9MB in the beginning and 273.7MB in the end (delta: 81.8MB). Free memory was 158.0MB in the beginning and 232.2MB in the end (delta: -74.3MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. [2022-09-16 11:29:22,797 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 191.9MB. Free memory was 147.1MB in the beginning and 147.0MB in the end (delta: 88.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:29:22,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 635.05ms. Allocated memory was 191.9MB in the beginning and 273.7MB in the end (delta: 81.8MB). Free memory was 157.7MB in the beginning and 225.2MB in the end (delta: -67.6MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-09-16 11:29:22,798 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.34ms. Allocated memory is still 273.7MB. Free memory was 225.2MB in the beginning and 222.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:29:22,802 INFO L158 Benchmark]: Boogie Preprocessor took 36.75ms. Allocated memory is still 273.7MB. Free memory was 222.6MB in the beginning and 221.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:29:22,802 INFO L158 Benchmark]: RCFGBuilder took 437.78ms. Allocated memory is still 273.7MB. Free memory was 221.0MB in the beginning and 206.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-09-16 11:29:22,803 INFO L158 Benchmark]: TraceAbstraction took 1491.34ms. Allocated memory is still 273.7MB. Free memory was 205.3MB in the beginning and 232.2MB in the end (delta: -26.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:29:22,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 191.9MB. Free memory was 147.1MB in the beginning and 147.0MB in the end (delta: 88.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 635.05ms. Allocated memory was 191.9MB in the beginning and 273.7MB in the end (delta: 81.8MB). Free memory was 157.7MB in the beginning and 225.2MB in the end (delta: -67.6MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 68.34ms. Allocated memory is still 273.7MB. Free memory was 225.2MB in the beginning and 222.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.75ms. Allocated memory is still 273.7MB. Free memory was 222.6MB in the beginning and 221.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 437.78ms. Allocated memory is still 273.7MB. Free memory was 221.0MB in the beginning and 206.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1491.34ms. Allocated memory is still 273.7MB. Free memory was 205.3MB in the beginning and 232.2MB in the end (delta: -26.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 938]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 938]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 948]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 948]: 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, 148 locations, 10 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: 1.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124 IncrementalHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 36 mSDtfsCounter, 124 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=205occurred in iteration=0, InterpolantAutomatonStates: 24, 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, 0.4s InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 318 ConstructedInterpolants, 0 QuantifiedInterpolants, 510 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:29:22,842 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...