/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-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:03:58,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:03:58,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:03:58,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:03:58,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:03:58,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:03:58,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:03:58,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:03:58,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:03:58,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:03:58,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:03:58,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:03:58,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:03:58,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:03:58,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:03:58,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:03:58,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:03:58,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:03:58,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:03:58,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:03:58,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:03:58,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:03:58,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:03:58,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:03:58,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:03:58,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:03:58,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:03:58,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:03:58,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:03:58,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:03:58,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:03:58,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:03:58,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:03:58,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:03:58,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:03:58,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:03:58,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:03:58,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:03:58,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:03:58,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:03:58,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:03:58,364 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 12:03:58,409 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:03:58,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:03:58,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:03:58,411 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:03:58,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:03:58,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:03:58,412 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:03:58,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:03:58,412 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:03:58,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:03:58,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:03:58,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:03:58,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:03:58,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:03:58,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:03:58,413 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:03:58,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:03:58,413 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:03:58,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:03:58,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:03:58,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:03:58,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:03:58,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:03:58,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:03:58,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:03:58,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:03:58,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:03:58,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:03:58,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:03:58,415 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:03:58,415 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 12:03:58,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:03:58,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:03:58,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:03:58,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:03:58,773 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:03:58,773 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:03:58,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2022-09-16 12:03:58,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91d56b14/aafd604b730f4197887fa9f4c37535f7/FLAGac4389402 [2022-09-16 12:03:59,528 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:03:59,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2022-09-16 12:03:59,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91d56b14/aafd604b730f4197887fa9f4c37535f7/FLAGac4389402 [2022-09-16 12:03:59,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91d56b14/aafd604b730f4197887fa9f4c37535f7 [2022-09-16 12:03:59,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:03:59,932 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:03:59,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:03:59,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:03:59,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:03:59,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e2eb68 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 12:03:59,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:03:59" (1/1) ... [2022-09-16 12:03:59,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:03:59,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:04:00,272 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-2.wvr.c[2474,2487] [2022-09-16 12:04:00,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:04:00,296 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:04:00,337 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-2.wvr.c[2474,2487] [2022-09-16 12:04:00,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:04:00,353 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:04:00,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:00 WrapperNode [2022-09-16 12:04:00,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:04:00,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:04:00,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:04:00,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:04:00,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:00" (1/1) ... [2022-09-16 12:04:00,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:00" (1/1) ... [2022-09-16 12:04:00,449 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 143 [2022-09-16 12:04:00,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:04:00,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:04:00,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:04:00,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:04:00,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:00" (1/1) ... [2022-09-16 12:04:00,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:00" (1/1) ... [2022-09-16 12:04:00,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:00" (1/1) ... [2022-09-16 12:04:00,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:00" (1/1) ... [2022-09-16 12:04:00,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:00" (1/1) ... [2022-09-16 12:04:00,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:00" (1/1) ... [2022-09-16 12:04:00,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:00" (1/1) ... [2022-09-16 12:04:00,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:04:00,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:04:00,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:04:00,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:04:00,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:00" (1/1) ... [2022-09-16 12:04:00,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:04:00,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:00,576 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 12:04:00,595 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 12:04:00,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:04:00,657 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 12:04:00,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 12:04:00,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 12:04:00,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 12:04:00,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:04:00,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:04:00,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:04:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 12:04:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:04:00,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:04:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:04:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:04:00,677 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 12:04:00,825 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:04:00,827 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:04:01,114 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:04:01,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:04:01,122 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 12:04:01,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:04:01 BoogieIcfgContainer [2022-09-16 12:04:01,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:04:01,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:04:01,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:04:01,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:04:01,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:03:59" (1/3) ... [2022-09-16 12:04:01,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd19f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:04:01, skipping insertion in model container [2022-09-16 12:04:01,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:04:00" (2/3) ... [2022-09-16 12:04:01,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd19f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:04:01, skipping insertion in model container [2022-09-16 12:04:01,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:04:01" (3/3) ... [2022-09-16 12:04:01,131 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-2.wvr.c [2022-09-16 12:04:01,146 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:04:01,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-09-16 12:04:01,147 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:04:01,258 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 12:04:01,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 182 transitions, 380 flow [2022-09-16 12:04:01,387 INFO L130 PetriNetUnfolder]: 15/180 cut-off events. [2022-09-16 12:04:01,389 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 12:04:01,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 180 events. 15/180 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 233 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2022-09-16 12:04:01,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 182 transitions, 380 flow [2022-09-16 12:04:01,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 68 transitions, 136 flow [2022-09-16 12:04:01,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:04:01,411 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;@201b6627, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:04:01,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-16 12:04:01,427 INFO L130 PetriNetUnfolder]: 3/62 cut-off events. [2022-09-16 12:04:01,427 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:04:01,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:01,428 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 12:04:01,428 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 12:04:01,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:01,432 INFO L85 PathProgramCache]: Analyzing trace with hash 759487250, now seen corresponding path program 1 times [2022-09-16 12:04:01,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:01,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702594505] [2022-09-16 12:04:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:01,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:01,678 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 12:04:01,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:01,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702594505] [2022-09-16 12:04:01,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702594505] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:01,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:04:01,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:04:01,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096333306] [2022-09-16 12:04:01,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:01,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:04:01,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:01,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:04:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:04:01,729 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 182 [2022-09-16 12:04:01,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 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 12:04:01,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:01,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 182 [2022-09-16 12:04:01,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:01,816 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-09-16 12:04:01,817 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:04:01,817 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 8 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 12:04:01,818 INFO L137 encePairwiseOnDemand]: 173/182 looper letters, 14 selfloop transitions, 4 changer transitions 3/72 dead transitions. [2022-09-16 12:04:01,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 180 flow [2022-09-16 12:04:01,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:04:01,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:04:01,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 793 transitions. [2022-09-16 12:04:01,837 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2022-09-16 12:04:01,838 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 793 transitions. [2022-09-16 12:04:01,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 793 transitions. [2022-09-16 12:04:01,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:01,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 793 transitions. [2022-09-16 12:04:01,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.6) internal successors, (793), 5 states have internal predecessors, (793), 0 states have call successors, (0), 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 12:04:01,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 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 12:04:01,880 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 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 12:04:01,882 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 136 flow. Second operand 5 states and 793 transitions. [2022-09-16 12:04:01,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 180 flow [2022-09-16 12:04:01,885 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 12:04:01,888 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 154 flow [2022-09-16 12:04:01,889 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, 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 12:04:01,893 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2022-09-16 12:04:01,894 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 154 flow [2022-09-16 12:04:01,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 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 12:04:01,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:01,896 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 12:04:01,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:04:01,897 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 12:04:01,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:01,899 INFO L85 PathProgramCache]: Analyzing trace with hash 990272582, now seen corresponding path program 1 times [2022-09-16 12:04:01,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:01,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152051584] [2022-09-16 12:04:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:01,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:02,033 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 12:04:02,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:02,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152051584] [2022-09-16 12:04:02,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152051584] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:04:02,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590728227] [2022-09-16 12:04:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:02,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:02,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:02,040 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 12:04:02,041 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 12:04:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:02,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:04:02,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:04:02,230 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 12:04:02,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:04:02,305 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 12:04:02,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590728227] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:04:02,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:04:02,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 12:04:02,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902315531] [2022-09-16 12:04:02,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:04:02,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 12:04:02,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:02,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 12:04:02,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 12:04:02,311 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 182 [2022-09-16 12:04:02,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 156.66666666666666) internal successors, (1880), 12 states have internal predecessors, (1880), 0 states have call successors, (0), 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 12:04:02,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:02,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 182 [2022-09-16 12:04:02,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:02,485 INFO L130 PetriNetUnfolder]: 1/100 cut-off events. [2022-09-16 12:04:02,485 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-09-16 12:04:02,485 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 2. Compared 6 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 12:04:02,486 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 23 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2022-09-16 12:04:02,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 312 flow [2022-09-16 12:04:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 12:04:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 12:04:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2816 transitions. [2022-09-16 12:04:02,492 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8595848595848596 [2022-09-16 12:04:02,492 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2816 transitions. [2022-09-16 12:04:02,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2816 transitions. [2022-09-16 12:04:02,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:02,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2816 transitions. [2022-09-16 12:04:02,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 156.44444444444446) internal successors, (2816), 18 states have internal predecessors, (2816), 0 states have call successors, (0), 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 12:04:02,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 182.0) internal successors, (3458), 19 states have internal predecessors, (3458), 0 states have call successors, (0), 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 12:04:02,509 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 182.0) internal successors, (3458), 19 states have internal predecessors, (3458), 0 states have call successors, (0), 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 12:04:02,509 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 154 flow. Second operand 18 states and 2816 transitions. [2022-09-16 12:04:02,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 312 flow [2022-09-16 12:04:02,512 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 12:04:02,514 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 258 flow [2022-09-16 12:04:02,514 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, 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 12:04:02,515 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2022-09-16 12:04:02,515 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 258 flow [2022-09-16 12:04:02,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 156.66666666666666) internal successors, (1880), 12 states have internal predecessors, (1880), 0 states have call successors, (0), 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 12:04:02,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:02,517 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 12:04:02,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 12:04:02,740 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 12:04:02,741 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 12:04:02,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash 633679320, now seen corresponding path program 1 times [2022-09-16 12:04:02,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:02,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288706294] [2022-09-16 12:04:02,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:02,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:02,835 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 12:04:02,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:02,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288706294] [2022-09-16 12:04:02,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288706294] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:04:02,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726777265] [2022-09-16 12:04:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:02,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:02,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:02,837 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 12:04:02,839 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 12:04:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:02,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:04:02,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:04:02,942 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 12:04:02,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:04:02,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726777265] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:04:02,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:04:02,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:04:02,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777218605] [2022-09-16 12:04:02,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:04:02,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:04:02,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:02,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:04:02,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:04:02,946 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 182 [2022-09-16 12:04:02,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 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 12:04:02,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:02,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 182 [2022-09-16 12:04:02,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:03,015 INFO L130 PetriNetUnfolder]: 1/96 cut-off events. [2022-09-16 12:04:03,015 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-09-16 12:04:03,016 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 12:04:03,017 INFO L137 encePairwiseOnDemand]: 177/182 looper letters, 15 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2022-09-16 12:04:03,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 293 flow [2022-09-16 12:04:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:04:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:04:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1096 transitions. [2022-09-16 12:04:03,020 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8602825745682888 [2022-09-16 12:04:03,020 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1096 transitions. [2022-09-16 12:04:03,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1096 transitions. [2022-09-16 12:04:03,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:03,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1096 transitions. [2022-09-16 12:04:03,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.57142857142858) internal successors, (1096), 7 states have internal predecessors, (1096), 0 states have call successors, (0), 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 12:04:03,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 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 12:04:03,026 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 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 12:04:03,026 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 258 flow. Second operand 7 states and 1096 transitions. [2022-09-16 12:04:03,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 293 flow [2022-09-16 12:04:03,029 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 12:04:03,031 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 221 flow [2022-09-16 12:04:03,032 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, 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 12:04:03,033 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2022-09-16 12:04:03,034 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 221 flow [2022-09-16 12:04:03,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 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 12:04:03,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:04:03,034 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 12:04:03,062 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 12:04:03,259 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 12:04:03,260 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 12:04:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:03,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2038132754, now seen corresponding path program 2 times [2022-09-16 12:04:03,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:03,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161319588] [2022-09-16 12:04:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:03,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:03,373 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 12:04:03,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:03,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161319588] [2022-09-16 12:04:03,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161319588] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:04:03,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514858687] [2022-09-16 12:04:03,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:04:03,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:03,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:03,375 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 12:04:03,376 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 12:04:03,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:04:03,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:04:03,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 12:04:03,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:04:03,594 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 12:04:03,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:04:03,747 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 12:04:03,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514858687] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:04:03,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:04:03,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 12:04:03,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698075764] [2022-09-16 12:04:03,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:04:03,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:04:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:03,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:04:03,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:04:03,752 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 182 [2022-09-16 12:04:03,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 221 flow. Second operand has 18 states, 18 states have (on average 142.72222222222223) internal successors, (2569), 18 states have internal predecessors, (2569), 0 states have call successors, (0), 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 12:04:03,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:03,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 182 [2022-09-16 12:04:03,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:04:04,174 INFO L130 PetriNetUnfolder]: 1/106 cut-off events. [2022-09-16 12:04:04,174 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-09-16 12:04:04,175 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 12:04:04,175 INFO L137 encePairwiseOnDemand]: 171/182 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2022-09-16 12:04:04,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 396 flow [2022-09-16 12:04:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 12:04:04,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 12:04:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3394 transitions. [2022-09-16 12:04:04,182 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.777014652014652 [2022-09-16 12:04:04,182 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3394 transitions. [2022-09-16 12:04:04,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3394 transitions. [2022-09-16 12:04:04,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:04:04,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3394 transitions. [2022-09-16 12:04:04,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 141.41666666666666) internal successors, (3394), 24 states have internal predecessors, (3394), 0 states have call successors, (0), 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 12:04:04,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 182.0) internal successors, (4550), 25 states have internal predecessors, (4550), 0 states have call successors, (0), 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 12:04:04,197 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 182.0) internal successors, (4550), 25 states have internal predecessors, (4550), 0 states have call successors, (0), 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 12:04:04,197 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 221 flow. Second operand 24 states and 3394 transitions. [2022-09-16 12:04:04,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 396 flow [2022-09-16 12:04:04,199 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 12:04:04,200 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2022-09-16 12:04:04,200 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, 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 12:04:04,201 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 33 predicate places. [2022-09-16 12:04:04,201 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2022-09-16 12:04:04,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 142.72222222222223) internal successors, (2569), 18 states have internal predecessors, (2569), 0 states have call successors, (0), 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 12:04:04,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-09-16 12:04:04,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-09-16 12:04:04,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-16 12:04:04,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-16 12:04:04,227 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 12:04:04,427 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 12:04:04,428 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-09-16 12:04:04,431 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 12:04:04,431 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 12:04:04,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:04:04 BasicIcfg [2022-09-16 12:04:04,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 12:04:04,435 INFO L158 Benchmark]: Toolchain (without parser) took 4503.67ms. Allocated memory was 188.7MB in the beginning and 234.9MB in the end (delta: 46.1MB). Free memory was 132.7MB in the beginning and 173.3MB in the end (delta: -40.6MB). Peak memory consumption was 6.8MB. Max. memory is 8.0GB. [2022-09-16 12:04:04,436 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory was 149.3MB in the beginning and 149.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 12:04:04,436 INFO L158 Benchmark]: CACSL2BoogieTranslator took 423.53ms. Allocated memory is still 188.7MB. Free memory was 132.5MB in the beginning and 164.5MB in the end (delta: -32.0MB). Peak memory consumption was 14.1MB. Max. memory is 8.0GB. [2022-09-16 12:04:04,437 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.06ms. Allocated memory is still 188.7MB. Free memory was 164.5MB in the beginning and 162.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 12:04:04,437 INFO L158 Benchmark]: Boogie Preprocessor took 75.51ms. Allocated memory is still 188.7MB. Free memory was 162.5MB in the beginning and 160.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 12:04:04,437 INFO L158 Benchmark]: RCFGBuilder took 598.17ms. Allocated memory is still 188.7MB. Free memory was 160.7MB in the beginning and 145.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-09-16 12:04:04,438 INFO L158 Benchmark]: TraceAbstraction took 3309.09ms. Allocated memory was 188.7MB in the beginning and 234.9MB in the end (delta: 46.1MB). Free memory was 144.6MB in the beginning and 173.3MB in the end (delta: -28.8MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-09-16 12:04:04,456 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 188.7MB. Free memory was 149.3MB in the beginning and 149.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 423.53ms. Allocated memory is still 188.7MB. Free memory was 132.5MB in the beginning and 164.5MB in the end (delta: -32.0MB). Peak memory consumption was 14.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 68.06ms. Allocated memory is still 188.7MB. Free memory was 164.5MB in the beginning and 162.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 75.51ms. Allocated memory is still 188.7MB. Free memory was 162.5MB in the beginning and 160.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 598.17ms. Allocated memory is still 188.7MB. Free memory was 160.7MB in the beginning and 145.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 3309.09ms. Allocated memory was 188.7MB in the beginning and 234.9MB in the end (delta: 46.1MB). Free memory was 144.6MB in the beginning and 173.3MB in the end (delta: -28.8MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 101]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 101]: 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, 233 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: 3.1s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 193 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 193 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 255 IncrementalHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 20 mSDtfsCounter, 255 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: 0.1s 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 12:04:04,494 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...