/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 22:32:20,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 22:32:20,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 22:32:20,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 22:32:20,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 22:32:20,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 22:32:20,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 22:32:20,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 22:32:20,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 22:32:20,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 22:32:20,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 22:32:20,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 22:32:20,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 22:32:20,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 22:32:20,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 22:32:20,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 22:32:20,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 22:32:20,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 22:32:20,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 22:32:20,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 22:32:20,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 22:32:20,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 22:32:20,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 22:32:20,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 22:32:20,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 22:32:20,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 22:32:20,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 22:32:20,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 22:32:20,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 22:32:20,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 22:32:20,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 22:32:20,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 22:32:20,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 22:32:20,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 22:32:20,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 22:32:20,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 22:32:20,311 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-FA-VariableLbe.epf [2019-12-18 22:32:20,335 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 22:32:20,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 22:32:20,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 22:32:20,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 22:32:20,338 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 22:32:20,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 22:32:20,338 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 22:32:20,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 22:32:20,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 22:32:20,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 22:32:20,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 22:32:20,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 22:32:20,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 22:32:20,341 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 22:32:20,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 22:32:20,341 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 22:32:20,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 22:32:20,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 22:32:20,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 22:32:20,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 22:32:20,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 22:32:20,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 22:32:20,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 22:32:20,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 22:32:20,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 22:32:20,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 22:32:20,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 22:32:20,344 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 22:32:20,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 22:32:20,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 22:32:20,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 22:32:20,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 22:32:20,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 22:32:20,662 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 22:32:20,663 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 22:32:20,664 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2019-12-18 22:32:20,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d32d9eb5/29e4b3bb48454e29b32b27086c49b9ed/FLAG54d76b0da [2019-12-18 22:32:21,231 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 22:32:21,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2019-12-18 22:32:21,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d32d9eb5/29e4b3bb48454e29b32b27086c49b9ed/FLAG54d76b0da [2019-12-18 22:32:21,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d32d9eb5/29e4b3bb48454e29b32b27086c49b9ed [2019-12-18 22:32:21,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 22:32:21,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 22:32:21,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 22:32:21,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 22:32:21,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 22:32:21,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:32:21" (1/1) ... [2019-12-18 22:32:21,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10591731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:21, skipping insertion in model container [2019-12-18 22:32:21,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:32:21" (1/1) ... [2019-12-18 22:32:21,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 22:32:21,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 22:32:22,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:32:22,161 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 22:32:22,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:32:22,286 INFO L208 MainTranslator]: Completed translation [2019-12-18 22:32:22,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:22 WrapperNode [2019-12-18 22:32:22,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 22:32:22,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 22:32:22,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 22:32:22,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 22:32:22,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:22" (1/1) ... [2019-12-18 22:32:22,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:22" (1/1) ... [2019-12-18 22:32:22,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 22:32:22,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 22:32:22,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 22:32:22,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 22:32:22,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:22" (1/1) ... [2019-12-18 22:32:22,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:22" (1/1) ... [2019-12-18 22:32:22,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:22" (1/1) ... [2019-12-18 22:32:22,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:22" (1/1) ... [2019-12-18 22:32:22,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:22" (1/1) ... [2019-12-18 22:32:22,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:22" (1/1) ... [2019-12-18 22:32:22,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:22" (1/1) ... [2019-12-18 22:32:22,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 22:32:22,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 22:32:22,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 22:32:22,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 22:32:22,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 22:32:22,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 22:32:22,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 22:32:22,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 22:32:22,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 22:32:22,412 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 22:32:22,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 22:32:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 22:32:22,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 22:32:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 22:32:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 22:32:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 22:32:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 22:32:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 22:32:22,416 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 22:32:22,750 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 22:32:22,750 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 22:32:22,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:32:22 BoogieIcfgContainer [2019-12-18 22:32:22,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 22:32:22,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 22:32:22,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 22:32:22,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 22:32:22,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:32:21" (1/3) ... [2019-12-18 22:32:22,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4aa403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:32:22, skipping insertion in model container [2019-12-18 22:32:22,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:22" (2/3) ... [2019-12-18 22:32:22,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4aa403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:32:22, skipping insertion in model container [2019-12-18 22:32:22,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:32:22" (3/3) ... [2019-12-18 22:32:22,760 INFO L109 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2019-12-18 22:32:22,770 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 22:32:22,771 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 22:32:22,777 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 22:32:22,778 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 22:32:22,805 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,805 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,806 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,808 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,808 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,809 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,809 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,809 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,810 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,810 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,810 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,810 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,811 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,811 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,812 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,814 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,815 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,815 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,821 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,821 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,822 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,822 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,831 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,831 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,832 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,832 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,836 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,836 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,836 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,836 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:32:22,851 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 22:32:22,866 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 22:32:22,867 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 22:32:22,867 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 22:32:22,867 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 22:32:22,867 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 22:32:22,867 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 22:32:22,867 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 22:32:22,868 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 22:32:22,880 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-18 22:32:22,882 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-18 22:32:22,921 INFO L126 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-18 22:32:22,922 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:32:22,929 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:32:22,934 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-18 22:32:22,958 INFO L126 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-18 22:32:22,958 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:32:22,960 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:32:22,964 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 22:32:22,965 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 22:32:24,270 INFO L206 etLargeBlockEncoding]: Checked pairs total: 507 [2019-12-18 22:32:24,270 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-18 22:32:24,274 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-18 22:32:24,285 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-18 22:32:24,287 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-18 22:32:24,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 22:32:24,294 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:32:24,295 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:32:24,296 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:32:24,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:32:24,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1331014227, now seen corresponding path program 1 times [2019-12-18 22:32:24,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:32:24,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968644876] [2019-12-18 22:32:24,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:32:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:32:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:32:24,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968644876] [2019-12-18 22:32:24,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:32:24,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:32:24,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194053736] [2019-12-18 22:32:24,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:32:24,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:32:24,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:32:24,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:32:24,567 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2019-12-18 22:32:24,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:32:24,606 INFO L93 Difference]: Finished difference Result 52 states and 109 transitions. [2019-12-18 22:32:24,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:32:24,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 22:32:24,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:32:24,620 INFO L225 Difference]: With dead ends: 52 [2019-12-18 22:32:24,621 INFO L226 Difference]: Without dead ends: 36 [2019-12-18 22:32:24,622 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:32:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-18 22:32:24,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-18 22:32:24,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-18 22:32:24,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2019-12-18 22:32:24,670 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 8 [2019-12-18 22:32:24,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:32:24,671 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2019-12-18 22:32:24,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:32:24,671 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-12-18 22:32:24,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 22:32:24,672 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:32:24,672 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:32:24,673 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:32:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:32:24,673 INFO L82 PathProgramCache]: Analyzing trace with hash 660414012, now seen corresponding path program 1 times [2019-12-18 22:32:24,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:32:24,674 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312128105] [2019-12-18 22:32:24,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:32:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:32:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:32:24,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312128105] [2019-12-18 22:32:24,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:32:24,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:32:24,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678443545] [2019-12-18 22:32:24,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:32:24,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:32:24,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:32:24,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:32:24,751 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 3 states. [2019-12-18 22:32:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:32:24,761 INFO L93 Difference]: Finished difference Result 42 states and 71 transitions. [2019-12-18 22:32:24,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:32:24,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 22:32:24,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:32:24,763 INFO L225 Difference]: With dead ends: 42 [2019-12-18 22:32:24,763 INFO L226 Difference]: Without dead ends: 36 [2019-12-18 22:32:24,764 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:32:24,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-18 22:32:24,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2019-12-18 22:32:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-18 22:32:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 58 transitions. [2019-12-18 22:32:24,771 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 58 transitions. Word has length 9 [2019-12-18 22:32:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:32:24,771 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 58 transitions. [2019-12-18 22:32:24,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:32:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 58 transitions. [2019-12-18 22:32:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 22:32:24,772 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:32:24,773 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:32:24,773 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:32:24,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:32:24,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1689946933, now seen corresponding path program 1 times [2019-12-18 22:32:24,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:32:24,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292574100] [2019-12-18 22:32:24,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:32:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:32:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:32:24,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292574100] [2019-12-18 22:32:24,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:32:24,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:32:24,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749295675] [2019-12-18 22:32:24,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:32:24,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:32:24,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:32:24,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:32:24,861 INFO L87 Difference]: Start difference. First operand 34 states and 58 transitions. Second operand 3 states. [2019-12-18 22:32:24,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:32:24,871 INFO L93 Difference]: Finished difference Result 33 states and 55 transitions. [2019-12-18 22:32:24,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:32:24,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 22:32:24,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:32:24,873 INFO L225 Difference]: With dead ends: 33 [2019-12-18 22:32:24,873 INFO L226 Difference]: Without dead ends: 33 [2019-12-18 22:32:24,874 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:32:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-18 22:32:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-12-18 22:32:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-18 22:32:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 55 transitions. [2019-12-18 22:32:24,882 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 55 transitions. Word has length 9 [2019-12-18 22:32:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:32:24,884 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 55 transitions. [2019-12-18 22:32:24,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:32:24,884 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2019-12-18 22:32:24,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:32:24,886 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:32:24,886 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:32:24,886 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:32:24,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:32:24,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1003717118, now seen corresponding path program 1 times [2019-12-18 22:32:24,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:32:24,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266270324] [2019-12-18 22:32:24,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:32:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:32:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:32:24,954 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266270324] [2019-12-18 22:32:24,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:32:24,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:32:24,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204888440] [2019-12-18 22:32:24,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:32:24,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:32:24,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:32:24,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:32:24,956 INFO L87 Difference]: Start difference. First operand 33 states and 55 transitions. Second operand 3 states. [2019-12-18 22:32:24,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:32:24,970 INFO L93 Difference]: Finished difference Result 32 states and 53 transitions. [2019-12-18 22:32:24,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:32:24,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 22:32:24,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:32:24,972 INFO L225 Difference]: With dead ends: 32 [2019-12-18 22:32:24,972 INFO L226 Difference]: Without dead ends: 32 [2019-12-18 22:32:24,972 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:32:24,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-18 22:32:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-18 22:32:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-18 22:32:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 53 transitions. [2019-12-18 22:32:24,980 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 53 transitions. Word has length 10 [2019-12-18 22:32:24,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:32:24,980 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 53 transitions. [2019-12-18 22:32:24,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:32:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 53 transitions. [2019-12-18 22:32:24,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:32:24,981 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:32:24,982 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:32:24,983 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:32:24,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:32:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash -848747306, now seen corresponding path program 1 times [2019-12-18 22:32:24,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:32:24,984 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053579095] [2019-12-18 22:32:24,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:32:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:32:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:32:25,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053579095] [2019-12-18 22:32:25,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:32:25,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:32:25,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354884677] [2019-12-18 22:32:25,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:32:25,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:32:25,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:32:25,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:32:25,044 INFO L87 Difference]: Start difference. First operand 32 states and 53 transitions. Second operand 3 states. [2019-12-18 22:32:25,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:32:25,055 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2019-12-18 22:32:25,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:32:25,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 22:32:25,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:32:25,056 INFO L225 Difference]: With dead ends: 35 [2019-12-18 22:32:25,056 INFO L226 Difference]: Without dead ends: 15 [2019-12-18 22:32:25,057 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:32:25,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-18 22:32:25,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-18 22:32:25,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-18 22:32:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-18 22:32:25,059 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2019-12-18 22:32:25,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:32:25,060 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-18 22:32:25,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:32:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-12-18 22:32:25,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:32:25,061 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:32:25,061 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:32:25,061 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:32:25,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:32:25,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1106814665, now seen corresponding path program 1 times [2019-12-18 22:32:25,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:32:25,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670295861] [2019-12-18 22:32:25,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:32:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:32:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:32:25,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670295861] [2019-12-18 22:32:25,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:32:25,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:32:25,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043622369] [2019-12-18 22:32:25,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:32:25,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:32:25,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:32:25,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:32:25,136 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-12-18 22:32:25,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:32:25,159 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-12-18 22:32:25,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:32:25,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:32:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:32:25,160 INFO L225 Difference]: With dead ends: 14 [2019-12-18 22:32:25,160 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 22:32:25,161 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 22:32:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 22:32:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 22:32:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 22:32:25,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 22:32:25,162 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 22:32:25,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:32:25,162 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 22:32:25,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:32:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 22:32:25,163 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 22:32:25,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:32:25 BasicIcfg [2019-12-18 22:32:25,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 22:32:25,176 INFO L168 Benchmark]: Toolchain (without parser) took 3581.32 ms. Allocated memory was 135.3 MB in the beginning and 255.9 MB in the end (delta: 120.6 MB). Free memory was 98.3 MB in the beginning and 182.7 MB in the end (delta: -84.4 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2019-12-18 22:32:25,177 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 135.3 MB. Free memory was 118.5 MB in the beginning and 118.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-12-18 22:32:25,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.51 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 98.1 MB in the beginning and 155.8 MB in the end (delta: -57.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2019-12-18 22:32:25,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.25 ms. Allocated memory is still 199.2 MB. Free memory was 155.8 MB in the beginning and 153.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-12-18 22:32:25,186 INFO L168 Benchmark]: Boogie Preprocessor took 24.69 ms. Allocated memory is still 199.2 MB. Free memory was 153.7 MB in the beginning and 152.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-18 22:32:25,186 INFO L168 Benchmark]: RCFGBuilder took 393.47 ms. Allocated memory is still 199.2 MB. Free memory was 152.3 MB in the beginning and 132.5 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2019-12-18 22:32:25,188 INFO L168 Benchmark]: TraceAbstraction took 2418.09 ms. Allocated memory was 199.2 MB in the beginning and 255.9 MB in the end (delta: 56.6 MB). Free memory was 131.8 MB in the beginning and 182.7 MB in the end (delta: -50.9 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB. [2019-12-18 22:32:25,197 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 135.3 MB. Free memory was 118.5 MB in the beginning and 118.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 694.51 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 98.1 MB in the beginning and 155.8 MB in the end (delta: -57.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.25 ms. Allocated memory is still 199.2 MB. Free memory was 155.8 MB in the beginning and 153.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.69 ms. Allocated memory is still 199.2 MB. Free memory was 153.7 MB in the beginning and 152.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.47 ms. Allocated memory is still 199.2 MB. Free memory was 152.3 MB in the beginning and 132.5 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2418.09 ms. Allocated memory was 199.2 MB in the beginning and 255.9 MB in the end (delta: 56.6 MB). Free memory was 131.8 MB in the beginning and 182.7 MB in the end (delta: -50.9 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 62 ProgramPointsBefore, 22 ProgramPointsAfterwards, 53 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 249 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 507 CheckedPairsTotal, 44 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 14 SDslu, 31 SDs, 0 SdLazy, 20 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 1141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...