/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 00:03:41,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 00:03:41,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 00:03:41,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 00:03:41,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 00:03:41,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 00:03:41,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 00:03:41,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 00:03:41,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 00:03:41,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 00:03:41,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 00:03:41,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 00:03:41,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 00:03:41,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 00:03:41,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 00:03:41,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 00:03:41,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 00:03:41,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 00:03:41,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 00:03:41,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 00:03:41,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 00:03:41,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 00:03:41,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 00:03:41,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 00:03:41,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 00:03:41,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 00:03:41,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 00:03:41,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 00:03:41,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 00:03:41,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 00:03:41,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 00:03:41,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 00:03:41,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 00:03:41,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 00:03:41,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 00:03:41,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 00:03:41,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-27 00:03:41,373 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 00:03:41,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 00:03:41,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 00:03:41,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 00:03:41,375 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 00:03:41,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 00:03:41,376 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 00:03:41,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 00:03:41,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 00:03:41,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 00:03:41,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 00:03:41,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 00:03:41,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 00:03:41,377 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 00:03:41,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 00:03:41,377 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 00:03:41,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 00:03:41,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 00:03:41,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 00:03:41,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 00:03:41,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 00:03:41,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 00:03:41,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 00:03:41,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 00:03:41,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 00:03:41,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 00:03:41,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 00:03:41,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 00:03:41,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-27 00:03:41,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 00:03:41,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 00:03:41,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 00:03:41,682 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 00:03:41,683 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 00:03:41,684 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 00:03:41,685 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i [2019-12-27 00:03:41,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c4e36fea/50863366e9c64e388eb6bee6d505f7fa/FLAG3e13d5a6c [2019-12-27 00:03:42,390 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 00:03:42,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i [2019-12-27 00:03:42,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c4e36fea/50863366e9c64e388eb6bee6d505f7fa/FLAG3e13d5a6c [2019-12-27 00:03:42,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c4e36fea/50863366e9c64e388eb6bee6d505f7fa [2019-12-27 00:03:42,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 00:03:42,672 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 00:03:42,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 00:03:42,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 00:03:42,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 00:03:42,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 12:03:42" (1/1) ... [2019-12-27 00:03:42,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb4131a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:42, skipping insertion in model container [2019-12-27 00:03:42,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 12:03:42" (1/1) ... [2019-12-27 00:03:42,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 00:03:42,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 00:03:43,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 00:03:43,266 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 00:03:43,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 00:03:43,405 INFO L208 MainTranslator]: Completed translation [2019-12-27 00:03:43,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:43 WrapperNode [2019-12-27 00:03:43,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 00:03:43,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 00:03:43,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 00:03:43,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 00:03:43,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:43" (1/1) ... [2019-12-27 00:03:43,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:43" (1/1) ... [2019-12-27 00:03:43,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 00:03:43,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 00:03:43,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 00:03:43,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 00:03:43,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:43" (1/1) ... [2019-12-27 00:03:43,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:43" (1/1) ... [2019-12-27 00:03:43,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:43" (1/1) ... [2019-12-27 00:03:43,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:43" (1/1) ... [2019-12-27 00:03:43,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:43" (1/1) ... [2019-12-27 00:03:43,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:43" (1/1) ... [2019-12-27 00:03:43,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:43" (1/1) ... [2019-12-27 00:03:43,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 00:03:43,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 00:03:43,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 00:03:43,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 00:03:43,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:43" (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 [2019-12-27 00:03:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 00:03:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 00:03:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 00:03:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 00:03:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 00:03:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 00:03:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 00:03:43,552 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 00:03:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 00:03:43,552 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 00:03:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 00:03:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 00:03:43,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 00:03:43,554 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 00:03:43,929 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 00:03:43,930 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 00:03:43,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 12:03:43 BoogieIcfgContainer [2019-12-27 00:03:43,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 00:03:43,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 00:03:43,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 00:03:43,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 00:03:43,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 12:03:42" (1/3) ... [2019-12-27 00:03:43,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3754fe3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 12:03:43, skipping insertion in model container [2019-12-27 00:03:43,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:03:43" (2/3) ... [2019-12-27 00:03:43,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3754fe3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 12:03:43, skipping insertion in model container [2019-12-27 00:03:43,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 12:03:43" (3/3) ... [2019-12-27 00:03:43,940 INFO L109 eAbstractionObserver]: Analyzing ICFG safe024_tso.oepc.i [2019-12-27 00:03:43,951 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 00:03:43,951 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 00:03:43,958 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 00:03:43,960 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 00:03:43,987 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,987 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,987 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,989 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,989 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,990 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,990 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,990 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,991 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,991 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,991 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,992 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,992 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,992 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,993 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,993 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,993 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,993 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,997 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,998 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,998 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:43,998 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:44,004 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:44,005 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:44,005 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:44,005 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:44,007 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:44,008 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:44,008 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:44,008 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:03:44,028 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 00:03:44,053 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 00:03:44,053 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 00:03:44,053 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 00:03:44,054 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 00:03:44,054 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 00:03:44,055 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 00:03:44,055 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 00:03:44,055 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 00:03:44,074 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-27 00:03:44,076 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-27 00:03:44,159 INFO L132 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-27 00:03:44,160 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 00:03:44,168 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/50 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 00:03:44,171 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-27 00:03:44,188 INFO L132 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-27 00:03:44,188 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 00:03:44,189 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/50 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 00:03:44,190 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 00:03:44,192 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 00:03:45,629 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-12-27 00:03:45,790 INFO L206 etLargeBlockEncoding]: Checked pairs total: 411 [2019-12-27 00:03:45,790 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-27 00:03:45,796 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-27 00:03:45,809 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-27 00:03:45,812 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-27 00:03:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 00:03:45,820 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:03:45,821 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:03:45,821 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:03:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:03:45,829 INFO L82 PathProgramCache]: Analyzing trace with hash 942939300, now seen corresponding path program 1 times [2019-12-27 00:03:45,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:03:45,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091685374] [2019-12-27 00:03:45,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:03:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:03:46,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:03:46,092 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091685374] [2019-12-27 00:03:46,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:03:46,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 00:03:46,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840550392] [2019-12-27 00:03:46,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 00:03:46,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:03:46,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 00:03:46,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 00:03:46,119 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-27 00:03:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:03:46,144 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-27 00:03:46,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 00:03:46,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 00:03:46,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:03:46,158 INFO L225 Difference]: With dead ends: 42 [2019-12-27 00:03:46,158 INFO L226 Difference]: Without dead ends: 34 [2019-12-27 00:03:46,160 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 [2019-12-27 00:03:46,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-27 00:03:46,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-27 00:03:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-27 00:03:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-27 00:03:46,202 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-27 00:03:46,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:03:46,203 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-27 00:03:46,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 00:03:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-27 00:03:46,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 00:03:46,204 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:03:46,204 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:03:46,205 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:03:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:03:46,205 INFO L82 PathProgramCache]: Analyzing trace with hash -833593397, now seen corresponding path program 1 times [2019-12-27 00:03:46,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:03:46,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379209779] [2019-12-27 00:03:46,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:03:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:03:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:03:46,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379209779] [2019-12-27 00:03:46,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:03:46,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 00:03:46,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720913777] [2019-12-27 00:03:46,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 00:03:46,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:03:46,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 00:03:46,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 00:03:46,279 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-27 00:03:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:03:46,302 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2019-12-27 00:03:46,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 00:03:46,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 00:03:46,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:03:46,304 INFO L225 Difference]: With dead ends: 36 [2019-12-27 00:03:46,304 INFO L226 Difference]: Without dead ends: 28 [2019-12-27 00:03:46,305 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 [2019-12-27 00:03:46,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-27 00:03:46,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-27 00:03:46,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-27 00:03:46,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2019-12-27 00:03:46,310 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 9 [2019-12-27 00:03:46,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:03:46,311 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2019-12-27 00:03:46,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 00:03:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2019-12-27 00:03:46,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 00:03:46,312 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:03:46,312 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:03:46,312 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:03:46,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:03:46,313 INFO L82 PathProgramCache]: Analyzing trace with hash -73433913, now seen corresponding path program 1 times [2019-12-27 00:03:46,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:03:46,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206855874] [2019-12-27 00:03:46,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:03:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:03:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:03:46,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206855874] [2019-12-27 00:03:46,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:03:46,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 00:03:46,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773171532] [2019-12-27 00:03:46,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 00:03:46,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:03:46,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 00:03:46,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 00:03:46,514 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand 5 states. [2019-12-27 00:03:46,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:03:46,554 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2019-12-27 00:03:46,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 00:03:46,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-27 00:03:46,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:03:46,555 INFO L225 Difference]: With dead ends: 31 [2019-12-27 00:03:46,556 INFO L226 Difference]: Without dead ends: 25 [2019-12-27 00:03:46,556 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-27 00:03:46,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-27 00:03:46,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-27 00:03:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-27 00:03:46,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 39 transitions. [2019-12-27 00:03:46,560 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 39 transitions. Word has length 10 [2019-12-27 00:03:46,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:03:46,561 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 39 transitions. [2019-12-27 00:03:46,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 00:03:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 39 transitions. [2019-12-27 00:03:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 00:03:46,562 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:03:46,562 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:03:46,562 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:03:46,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:03:46,563 INFO L82 PathProgramCache]: Analyzing trace with hash -71442783, now seen corresponding path program 2 times [2019-12-27 00:03:46,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:03:46,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405570914] [2019-12-27 00:03:46,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:03:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:03:46,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:03:46,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405570914] [2019-12-27 00:03:46,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:03:46,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 00:03:46,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518364921] [2019-12-27 00:03:46,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 00:03:46,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:03:46,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 00:03:46,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-27 00:03:46,665 INFO L87 Difference]: Start difference. First operand 25 states and 39 transitions. Second operand 6 states. [2019-12-27 00:03:46,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:03:46,738 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2019-12-27 00:03:46,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 00:03:46,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-27 00:03:46,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:03:46,740 INFO L225 Difference]: With dead ends: 25 [2019-12-27 00:03:46,740 INFO L226 Difference]: Without dead ends: 22 [2019-12-27 00:03:46,740 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-27 00:03:46,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-27 00:03:46,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-27 00:03:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-27 00:03:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2019-12-27 00:03:46,745 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 10 [2019-12-27 00:03:46,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:03:46,746 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-12-27 00:03:46,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 00:03:46,746 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2019-12-27 00:03:46,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 00:03:46,747 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:03:46,747 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:03:46,747 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:03:46,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:03:46,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1121373691, now seen corresponding path program 1 times [2019-12-27 00:03:46,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:03:46,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437227788] [2019-12-27 00:03:46,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:03:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:03:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:03:46,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437227788] [2019-12-27 00:03:46,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:03:46,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 00:03:46,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628660365] [2019-12-27 00:03:46,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 00:03:46,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:03:46,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 00:03:46,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 00:03:46,840 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand 4 states. [2019-12-27 00:03:46,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:03:46,863 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2019-12-27 00:03:46,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 00:03:46,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 00:03:46,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:03:46,864 INFO L225 Difference]: With dead ends: 24 [2019-12-27 00:03:46,864 INFO L226 Difference]: Without dead ends: 14 [2019-12-27 00:03:46,864 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 00:03:46,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-27 00:03:46,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-27 00:03:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-27 00:03:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-27 00:03:46,870 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-12-27 00:03:46,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:03:46,870 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-27 00:03:46,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 00:03:46,870 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-27 00:03:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 00:03:46,876 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:03:46,876 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:03:46,877 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:03:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:03:46,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2080305203, now seen corresponding path program 2 times [2019-12-27 00:03:46,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:03:46,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765047084] [2019-12-27 00:03:46,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:03:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:03:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:03:46,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765047084] [2019-12-27 00:03:46,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:03:46,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 00:03:46,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109060277] [2019-12-27 00:03:46,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 00:03:46,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:03:46,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 00:03:46,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 00:03:46,945 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2019-12-27 00:03:46,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:03:46,972 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-27 00:03:46,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 00:03:46,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 00:03:46,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:03:46,972 INFO L225 Difference]: With dead ends: 13 [2019-12-27 00:03:46,972 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 00:03:46,973 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 00:03:46,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 00:03:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 00:03:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 00:03:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 00:03:46,974 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 00:03:46,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:03:46,975 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 00:03:46,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 00:03:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 00:03:46,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 00:03:46,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 12:03:46 BasicIcfg [2019-12-27 00:03:46,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 00:03:46,981 INFO L168 Benchmark]: Toolchain (without parser) took 4308.94 ms. Allocated memory was 143.7 MB in the beginning and 250.1 MB in the end (delta: 106.4 MB). Free memory was 100.5 MB in the beginning and 117.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. [2019-12-27 00:03:46,982 INFO L168 Benchmark]: CDTParser took 1.61 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-12-27 00:03:46,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.16 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 155.8 MB in the end (delta: -55.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-12-27 00:03:46,983 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.65 ms. Allocated memory is still 200.8 MB. Free memory was 155.8 MB in the beginning and 153.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-12-27 00:03:46,984 INFO L168 Benchmark]: Boogie Preprocessor took 27.99 ms. Allocated memory is still 200.8 MB. Free memory was 153.6 MB in the beginning and 152.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 00:03:46,985 INFO L168 Benchmark]: RCFGBuilder took 447.21 ms. Allocated memory is still 200.8 MB. Free memory was 152.2 MB in the beginning and 131.0 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2019-12-27 00:03:46,986 INFO L168 Benchmark]: TraceAbstraction took 3046.23 ms. Allocated memory was 200.8 MB in the beginning and 250.1 MB in the end (delta: 49.3 MB). Free memory was 131.0 MB in the beginning and 117.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2019-12-27 00:03:46,990 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.61 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.16 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 155.8 MB in the end (delta: -55.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.65 ms. Allocated memory is still 200.8 MB. Free memory was 155.8 MB in the beginning and 153.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.99 ms. Allocated memory is still 200.8 MB. Free memory was 153.6 MB in the beginning and 152.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.21 ms. Allocated memory is still 200.8 MB. Free memory was 152.2 MB in the beginning and 131.0 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3046.23 ms. Allocated memory was 200.8 MB in the beginning and 250.1 MB in the end (delta: 49.3 MB). Free memory was 131.0 MB in the beginning and 117.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 64 ProgramPointsBefore, 21 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 15 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 236 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 411 CheckedPairsTotal, 45 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, 55 locations, 1 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 57 SDslu, 61 SDs, 0 SdLazy, 50 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1526 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...