/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/safe037_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 08:14:08,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 08:14:08,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 08:14:08,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 08:14:08,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 08:14:08,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 08:14:08,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 08:14:08,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 08:14:08,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 08:14:08,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 08:14:08,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 08:14:08,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 08:14:08,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 08:14:08,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 08:14:08,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 08:14:08,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 08:14:08,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 08:14:08,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 08:14:08,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 08:14:08,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 08:14:08,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 08:14:08,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 08:14:08,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 08:14:08,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 08:14:08,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 08:14:08,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 08:14:08,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 08:14:08,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 08:14:08,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 08:14:08,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 08:14:08,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 08:14:08,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 08:14:08,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 08:14:08,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 08:14:08,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 08:14:08,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 08:14:08,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 08:14:08,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 08:14:08,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 08:14:08,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 08:14:08,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 08:14:08,312 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 [2019-12-27 08:14:08,329 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 08:14:08,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 08:14:08,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 08:14:08,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 08:14:08,331 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 08:14:08,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 08:14:08,332 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 08:14:08,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 08:14:08,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 08:14:08,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 08:14:08,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 08:14:08,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 08:14:08,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 08:14:08,333 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 08:14:08,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 08:14:08,334 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 08:14:08,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 08:14:08,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 08:14:08,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 08:14:08,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 08:14:08,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 08:14:08,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 08:14:08,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 08:14:08,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 08:14:08,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 08:14:08,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 08:14:08,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 08:14:08,336 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 08:14:08,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 08:14:08,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 08:14:08,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 08:14:08,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 08:14:08,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 08:14:08,645 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 08:14:08,646 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 08:14:08,647 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.oepc.i [2019-12-27 08:14:08,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb746b33/32a190bb22a54a759f3385c3b33f5501/FLAG4058344f8 [2019-12-27 08:14:09,311 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 08:14:09,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_tso.oepc.i [2019-12-27 08:14:09,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb746b33/32a190bb22a54a759f3385c3b33f5501/FLAG4058344f8 [2019-12-27 08:14:09,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb746b33/32a190bb22a54a759f3385c3b33f5501 [2019-12-27 08:14:09,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 08:14:09,552 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 08:14:09,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 08:14:09,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 08:14:09,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 08:14:09,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 08:14:09" (1/1) ... [2019-12-27 08:14:09,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e8aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:09, skipping insertion in model container [2019-12-27 08:14:09,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 08:14:09" (1/1) ... [2019-12-27 08:14:09,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 08:14:09,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 08:14:10,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 08:14:10,135 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 08:14:10,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 08:14:10,271 INFO L208 MainTranslator]: Completed translation [2019-12-27 08:14:10,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:10 WrapperNode [2019-12-27 08:14:10,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 08:14:10,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 08:14:10,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 08:14:10,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 08:14:10,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:10" (1/1) ... [2019-12-27 08:14:10,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:10" (1/1) ... [2019-12-27 08:14:10,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 08:14:10,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 08:14:10,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 08:14:10,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 08:14:10,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:10" (1/1) ... [2019-12-27 08:14:10,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:10" (1/1) ... [2019-12-27 08:14:10,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:10" (1/1) ... [2019-12-27 08:14:10,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:10" (1/1) ... [2019-12-27 08:14:10,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:10" (1/1) ... [2019-12-27 08:14:10,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:10" (1/1) ... [2019-12-27 08:14:10,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:10" (1/1) ... [2019-12-27 08:14:10,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 08:14:10,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 08:14:10,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 08:14:10,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 08:14:10,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:10" (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 08:14:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 08:14:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 08:14:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 08:14:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 08:14:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 08:14:10,419 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 08:14:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 08:14:10,420 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 08:14:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 08:14:10,420 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 08:14:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 08:14:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 08:14:10,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 08:14:10,422 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 08:14:10,779 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 08:14:10,779 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 08:14:10,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 08:14:10 BoogieIcfgContainer [2019-12-27 08:14:10,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 08:14:10,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 08:14:10,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 08:14:10,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 08:14:10,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 08:14:09" (1/3) ... [2019-12-27 08:14:10,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754c3473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 08:14:10, skipping insertion in model container [2019-12-27 08:14:10,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:14:10" (2/3) ... [2019-12-27 08:14:10,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754c3473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 08:14:10, skipping insertion in model container [2019-12-27 08:14:10,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 08:14:10" (3/3) ... [2019-12-27 08:14:10,789 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_tso.oepc.i [2019-12-27 08:14:10,800 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 08:14:10,800 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 08:14:10,807 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 08:14:10,808 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 08:14:10,836 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,836 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,836 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,837 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,837 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,838 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,838 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,838 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,838 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,839 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,839 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,839 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,840 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,840 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,840 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,840 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,841 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,841 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,845 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,845 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,845 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,845 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,860 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,860 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,861 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,861 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,864 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,864 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,864 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,864 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:14:10,884 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 08:14:10,902 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:14:10,902 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:14:10,902 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:14:10,903 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:14:10,903 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:14:10,903 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:14:10,903 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:14:10,903 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:14:10,918 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-27 08:14:10,920 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-27 08:14:10,966 INFO L132 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-27 08:14:10,966 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 08:14:10,972 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 08:14:10,975 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-27 08:14:10,994 INFO L132 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-27 08:14:10,994 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 08:14:10,996 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 08:14:10,998 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 08:14:10,999 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 08:14:12,429 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-12-27 08:14:12,498 INFO L206 etLargeBlockEncoding]: Checked pairs total: 425 [2019-12-27 08:14:12,499 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-27 08:14:12,503 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-27 08:14:12,514 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-27 08:14:12,516 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-27 08:14:12,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 08:14:12,523 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:14:12,525 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:14:12,525 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:14:12,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:14:12,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1086085239, now seen corresponding path program 1 times [2019-12-27 08:14:12,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:14:12,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170990620] [2019-12-27 08:14:12,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:14:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:14:12,961 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 08:14:12,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170990620] [2019-12-27 08:14:12,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:14:12,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 08:14:12,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908945338] [2019-12-27 08:14:12,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 08:14:12,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:14:12,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 08:14:12,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 08:14:12,996 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-27 08:14:13,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:14:13,068 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-27 08:14:13,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 08:14:13,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-27 08:14:13,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:14:13,081 INFO L225 Difference]: With dead ends: 58 [2019-12-27 08:14:13,081 INFO L226 Difference]: Without dead ends: 36 [2019-12-27 08:14:13,082 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 08:14:13,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-27 08:14:13,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-27 08:14:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-27 08:14:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-27 08:14:13,116 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-27 08:14:13,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:14:13,117 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-27 08:14:13,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 08:14:13,117 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-27 08:14:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 08:14:13,118 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:14:13,118 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:14:13,118 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:14:13,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:14:13,119 INFO L82 PathProgramCache]: Analyzing trace with hash -744608244, now seen corresponding path program 1 times [2019-12-27 08:14:13,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:14:13,119 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742209970] [2019-12-27 08:14:13,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:14:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:14:13,216 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 08:14:13,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742209970] [2019-12-27 08:14:13,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:14:13,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 08:14:13,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794301566] [2019-12-27 08:14:13,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 08:14:13,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:14:13,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 08:14:13,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 08:14:13,222 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 5 states. [2019-12-27 08:14:13,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:14:13,277 INFO L93 Difference]: Finished difference Result 37 states and 62 transitions. [2019-12-27 08:14:13,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 08:14:13,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-27 08:14:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:14:13,279 INFO L225 Difference]: With dead ends: 37 [2019-12-27 08:14:13,279 INFO L226 Difference]: Without dead ends: 30 [2019-12-27 08:14:13,280 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-27 08:14:13,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-27 08:14:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-27 08:14:13,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-27 08:14:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2019-12-27 08:14:13,291 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 9 [2019-12-27 08:14:13,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:14:13,292 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2019-12-27 08:14:13,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 08:14:13,292 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2019-12-27 08:14:13,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 08:14:13,293 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:14:13,294 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:14:13,294 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:14:13,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:14:13,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1607968112, now seen corresponding path program 1 times [2019-12-27 08:14:13,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:14:13,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389559136] [2019-12-27 08:14:13,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:14:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:14:13,400 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 08:14:13,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389559136] [2019-12-27 08:14:13,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:14:13,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 08:14:13,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603404511] [2019-12-27 08:14:13,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 08:14:13,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:14:13,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 08:14:13,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 08:14:13,403 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 4 states. [2019-12-27 08:14:13,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:14:13,421 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2019-12-27 08:14:13,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 08:14:13,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-27 08:14:13,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:14:13,423 INFO L225 Difference]: With dead ends: 35 [2019-12-27 08:14:13,423 INFO L226 Difference]: Without dead ends: 31 [2019-12-27 08:14:13,423 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 08:14:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-27 08:14:13,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-12-27 08:14:13,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-27 08:14:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 47 transitions. [2019-12-27 08:14:13,429 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 47 transitions. Word has length 10 [2019-12-27 08:14:13,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:14:13,429 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 47 transitions. [2019-12-27 08:14:13,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 08:14:13,429 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 47 transitions. [2019-12-27 08:14:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 08:14:13,430 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:14:13,430 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:14:13,431 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:14:13,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:14:13,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1607961385, now seen corresponding path program 1 times [2019-12-27 08:14:13,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:14:13,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492932376] [2019-12-27 08:14:13,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:14:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:14:13,531 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 08:14:13,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492932376] [2019-12-27 08:14:13,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:14:13,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 08:14:13,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441995406] [2019-12-27 08:14:13,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 08:14:13,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:14:13,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 08:14:13,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-27 08:14:13,533 INFO L87 Difference]: Start difference. First operand 30 states and 47 transitions. Second operand 6 states. [2019-12-27 08:14:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:14:13,627 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2019-12-27 08:14:13,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 08:14:13,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-27 08:14:13,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:14:13,628 INFO L225 Difference]: With dead ends: 28 [2019-12-27 08:14:13,629 INFO L226 Difference]: Without dead ends: 16 [2019-12-27 08:14:13,629 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 08:14:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-27 08:14:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-27 08:14:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-27 08:14:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-27 08:14:13,632 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-12-27 08:14:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:14:13,632 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-27 08:14:13,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 08:14:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-27 08:14:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 08:14:13,633 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:14:13,633 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:14:13,634 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:14:13,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:14:13,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1627425577, now seen corresponding path program 1 times [2019-12-27 08:14:13,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:14:13,635 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764886615] [2019-12-27 08:14:13,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:14:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:14:13,699 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 08:14:13,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764886615] [2019-12-27 08:14:13,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:14:13,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 08:14:13,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393368248] [2019-12-27 08:14:13,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 08:14:13,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:14:13,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 08:14:13,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 08:14:13,702 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-27 08:14:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:14:13,720 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-12-27 08:14:13,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 08:14:13,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 08:14:13,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:14:13,721 INFO L225 Difference]: With dead ends: 19 [2019-12-27 08:14:13,721 INFO L226 Difference]: Without dead ends: 14 [2019-12-27 08:14:13,722 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 08:14:13,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-27 08:14:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-27 08:14:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-27 08:14:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-27 08:14:13,726 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-12-27 08:14:13,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:14:13,726 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-27 08:14:13,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 08:14:13,727 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-27 08:14:13,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 08:14:13,727 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:14:13,727 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:14:13,733 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:14:13,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:14:13,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1633797007, now seen corresponding path program 2 times [2019-12-27 08:14:13,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:14:13,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79072203] [2019-12-27 08:14:13,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:14:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:14:13,799 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 08:14:13,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79072203] [2019-12-27 08:14:13,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:14:13,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 08:14:13,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417044376] [2019-12-27 08:14:13,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 08:14:13,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:14:13,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 08:14:13,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 08:14:13,805 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2019-12-27 08:14:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:14:13,829 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-27 08:14:13,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 08:14:13,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 08:14:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:14:13,830 INFO L225 Difference]: With dead ends: 13 [2019-12-27 08:14:13,830 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 08:14:13,830 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 08:14:13,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 08:14:13,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 08:14:13,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 08:14:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 08:14:13,833 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 08:14:13,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:14:13,833 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 08:14:13,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 08:14:13,833 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 08:14:13,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 08:14:13,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 08:14:13 BasicIcfg [2019-12-27 08:14:13,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 08:14:13,845 INFO L168 Benchmark]: Toolchain (without parser) took 4291.50 ms. Allocated memory was 138.4 MB in the beginning and 246.9 MB in the end (delta: 108.5 MB). Free memory was 101.5 MB in the beginning and 128.6 MB in the end (delta: -27.1 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2019-12-27 08:14:13,846 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-27 08:14:13,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.76 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 101.3 MB in the beginning and 160.4 MB in the end (delta: -59.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2019-12-27 08:14:13,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.95 ms. Allocated memory is still 203.4 MB. Free memory was 160.4 MB in the beginning and 158.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 08:14:13,853 INFO L168 Benchmark]: Boogie Preprocessor took 26.28 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 08:14:13,855 INFO L168 Benchmark]: RCFGBuilder took 433.45 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 135.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-12-27 08:14:13,855 INFO L168 Benchmark]: TraceAbstraction took 3058.39 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 135.9 MB in the beginning and 128.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2019-12-27 08:14:13,866 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 719.76 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 101.3 MB in the beginning and 160.4 MB in the end (delta: -59.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.95 ms. Allocated memory is still 203.4 MB. Free memory was 160.4 MB in the beginning and 158.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.28 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.45 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 135.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3058.39 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 135.9 MB in the beginning and 128.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 64 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 236 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 425 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: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 68 SDslu, 79 SDs, 0 SdLazy, 57 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s 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, 1 StatesRemovedByMinimization, 1 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, 1341 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...