/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:27:27,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:27:27,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:27:27,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:27:27,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:27:27,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:27:27,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:27:27,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:27:27,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:27:27,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:27:27,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:27:27,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:27:27,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:27:27,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:27:27,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:27:27,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:27:27,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:27:27,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:27:27,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:27:27,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:27:27,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:27:27,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:27:27,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:27:27,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:27:27,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:27:27,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:27:27,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:27:27,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:27:27,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:27:27,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:27:27,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:27:27,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:27:27,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:27:27,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:27:27,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:27:27,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:27:27,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:27:27,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:27:27,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:27:27,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:27:27,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:27:27,346 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-SemanticLbe.epf [2020-04-17 22:27:27,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:27:27,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:27:27,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:27:27,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:27:27,362 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:27:27,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:27:27,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:27:27,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:27:27,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:27:27,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:27:27,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:27:27,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:27:27,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:27:27,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:27:27,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:27:27,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:27:27,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:27:27,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:27:27,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:27:27,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:27:27,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:27:27,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:27:27,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:27:27,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:27:27,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:27:27,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:27:27,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:27:27,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:27:27,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:27:27,677 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:27:27,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:27:27,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:27:27,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:27:27,696 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:27:27,696 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-04-17 22:27:27,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b557698bd/4241bde8517d488f89af67738f956f80/FLAG8440278ad [2020-04-17 22:27:28,267 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:27:28,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-04-17 22:27:28,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b557698bd/4241bde8517d488f89af67738f956f80/FLAG8440278ad [2020-04-17 22:27:28,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b557698bd/4241bde8517d488f89af67738f956f80 [2020-04-17 22:27:28,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:27:28,634 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:27:28,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:27:28,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:27:28,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:27:28,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:27:28" (1/1) ... [2020-04-17 22:27:28,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b840d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:28, skipping insertion in model container [2020-04-17 22:27:28,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:27:28" (1/1) ... [2020-04-17 22:27:28,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:27:28,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:27:29,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:27:29,156 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:27:29,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:27:29,284 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:27:29,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:29 WrapperNode [2020-04-17 22:27:29,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:27:29,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:27:29,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:27:29,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:27:29,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:29" (1/1) ... [2020-04-17 22:27:29,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:29" (1/1) ... [2020-04-17 22:27:29,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:27:29,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:27:29,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:27:29,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:27:29,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:29" (1/1) ... [2020-04-17 22:27:29,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:29" (1/1) ... [2020-04-17 22:27:29,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:29" (1/1) ... [2020-04-17 22:27:29,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:29" (1/1) ... [2020-04-17 22:27:29,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:29" (1/1) ... [2020-04-17 22:27:29,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:29" (1/1) ... [2020-04-17 22:27:29,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:29" (1/1) ... [2020-04-17 22:27:29,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:27:29,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:27:29,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:27:29,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:27:29,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:29" (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 [2020-04-17 22:27:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:27:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:27:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:27:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:27:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:27:29,434 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:27:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:27:29,434 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:27:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:27:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:27:29,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:27:29,436 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:27:29,805 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:27:29,805 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:27:29,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:27:29 BoogieIcfgContainer [2020-04-17 22:27:29,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:27:29,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:27:29,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:27:29,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:27:29,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:27:28" (1/3) ... [2020-04-17 22:27:29,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@877e9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:27:29, skipping insertion in model container [2020-04-17 22:27:29,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:27:29" (2/3) ... [2020-04-17 22:27:29,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@877e9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:27:29, skipping insertion in model container [2020-04-17 22:27:29,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:27:29" (3/3) ... [2020-04-17 22:27:29,819 INFO L109 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2020-04-17 22:27:29,829 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:27:29,830 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:27:29,837 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:27:29,838 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:27:29,860 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,861 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,861 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,861 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,862 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,862 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,863 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,863 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,863 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,863 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,864 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,864 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,868 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,868 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,868 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,869 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,873 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,874 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,874 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,874 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:27:29,887 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-17 22:27:29,904 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:27:29,904 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:27:29,905 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:27:29,905 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:27:29,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:27:29,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:27:29,905 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:27:29,906 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:27:29,926 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 54 transitions, 118 flow [2020-04-17 22:27:29,928 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-04-17 22:27:29,985 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-04-17 22:27:29,985 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:27:29,994 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-17 22:27:29,998 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-04-17 22:27:30,030 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-04-17 22:27:30,031 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:27:30,031 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-17 22:27:30,033 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-17 22:27:30,034 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:27:31,567 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1300 [2020-04-17 22:27:31,567 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2020-04-17 22:27:31,571 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-17 22:27:31,583 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-17 22:27:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-17 22:27:31,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 22:27:31,592 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:27:31,593 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 22:27:31,594 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:27:31,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:27:31,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1812706200, now seen corresponding path program 1 times [2020-04-17 22:27:31,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:27:31,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307627939] [2020-04-17 22:27:31,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:27:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:27:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:27:31,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307627939] [2020-04-17 22:27:31,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:27:31,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:27:31,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448140597] [2020-04-17 22:27:31,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:27:31,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:27:31,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:27:31,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:27:31,807 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-17 22:27:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:27:31,844 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-04-17 22:27:31,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:27:31,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-17 22:27:31,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:27:31,870 INFO L225 Difference]: With dead ends: 72 [2020-04-17 22:27:31,870 INFO L226 Difference]: Without dead ends: 56 [2020-04-17 22:27:31,874 INFO L678 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 [2020-04-17 22:27:31,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-17 22:27:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-17 22:27:31,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-17 22:27:31,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-04-17 22:27:31,919 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-04-17 22:27:31,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:27:31,920 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-04-17 22:27:31,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:27:31,920 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-04-17 22:27:31,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-17 22:27:31,921 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:27:31,921 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:27:31,921 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:27:31,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:27:31,922 INFO L82 PathProgramCache]: Analyzing trace with hash 359297998, now seen corresponding path program 1 times [2020-04-17 22:27:31,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:27:31,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407875279] [2020-04-17 22:27:31,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:27:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:27:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:27:31,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407875279] [2020-04-17 22:27:31,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:27:31,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:27:31,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769991360] [2020-04-17 22:27:31,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:27:31,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:27:31,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:27:31,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:27:31,994 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-04-17 22:27:32,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:27:32,003 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2020-04-17 22:27:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:27:32,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-17 22:27:32,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:27:32,005 INFO L225 Difference]: With dead ends: 55 [2020-04-17 22:27:32,006 INFO L226 Difference]: Without dead ends: 55 [2020-04-17 22:27:32,006 INFO L678 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 [2020-04-17 22:27:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-04-17 22:27:32,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-04-17 22:27:32,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-04-17 22:27:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 111 transitions. [2020-04-17 22:27:32,015 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 111 transitions. Word has length 7 [2020-04-17 22:27:32,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:27:32,016 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 111 transitions. [2020-04-17 22:27:32,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:27:32,016 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 111 transitions. [2020-04-17 22:27:32,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:27:32,017 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:27:32,017 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:27:32,017 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:27:32,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:27:32,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2063912123, now seen corresponding path program 1 times [2020-04-17 22:27:32,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:27:32,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327883548] [2020-04-17 22:27:32,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:27:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:27:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:27:32,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327883548] [2020-04-17 22:27:32,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:27:32,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:27:32,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177757849] [2020-04-17 22:27:32,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:27:32,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:27:32,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:27:32,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:27:32,151 INFO L87 Difference]: Start difference. First operand 55 states and 111 transitions. Second operand 4 states. [2020-04-17 22:27:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:27:32,184 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-04-17 22:27:32,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:27:32,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-04-17 22:27:32,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:27:32,189 INFO L225 Difference]: With dead ends: 56 [2020-04-17 22:27:32,189 INFO L226 Difference]: Without dead ends: 40 [2020-04-17 22:27:32,190 INFO L678 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 [2020-04-17 22:27:32,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-17 22:27:32,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-17 22:27:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-17 22:27:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-17 22:27:32,197 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 8 [2020-04-17 22:27:32,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:27:32,198 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-17 22:27:32,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:27:32,199 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-17 22:27:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:27:32,200 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:27:32,200 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:27:32,200 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:27:32,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:27:32,201 INFO L82 PathProgramCache]: Analyzing trace with hash -444073675, now seen corresponding path program 1 times [2020-04-17 22:27:32,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:27:32,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876882230] [2020-04-17 22:27:32,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:27:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:27:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:27:32,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876882230] [2020-04-17 22:27:32,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:27:32,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:27:32,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14407353] [2020-04-17 22:27:32,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:27:32,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:27:32,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:27:32,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:27:32,275 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 3 states. [2020-04-17 22:27:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:27:32,290 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2020-04-17 22:27:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:27:32,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:27:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:27:32,291 INFO L225 Difference]: With dead ends: 51 [2020-04-17 22:27:32,292 INFO L226 Difference]: Without dead ends: 41 [2020-04-17 22:27:32,292 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:27:32,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-04-17 22:27:32,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-04-17 22:27:32,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-04-17 22:27:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 60 transitions. [2020-04-17 22:27:32,297 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 60 transitions. Word has length 9 [2020-04-17 22:27:32,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:27:32,298 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 60 transitions. [2020-04-17 22:27:32,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:27:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 60 transitions. [2020-04-17 22:27:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:27:32,299 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:27:32,299 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:27:32,299 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:27:32,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:27:32,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1686734005, now seen corresponding path program 1 times [2020-04-17 22:27:32,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:27:32,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687705007] [2020-04-17 22:27:32,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:27:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:27:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:27:32,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687705007] [2020-04-17 22:27:32,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:27:32,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:27:32,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763775836] [2020-04-17 22:27:32,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:27:32,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:27:32,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:27:32,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:27:32,343 INFO L87 Difference]: Start difference. First operand 39 states and 60 transitions. Second operand 3 states. [2020-04-17 22:27:32,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:27:32,352 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2020-04-17 22:27:32,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:27:32,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:27:32,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:27:32,353 INFO L225 Difference]: With dead ends: 42 [2020-04-17 22:27:32,353 INFO L226 Difference]: Without dead ends: 31 [2020-04-17 22:27:32,354 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:27:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-04-17 22:27:32,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-04-17 22:27:32,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-04-17 22:27:32,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-04-17 22:27:32,358 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-04-17 22:27:32,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:27:32,358 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-04-17 22:27:32,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:27:32,359 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-04-17 22:27:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:27:32,359 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:27:32,359 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:27:32,360 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:27:32,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:27:32,360 INFO L82 PathProgramCache]: Analyzing trace with hash -881401391, now seen corresponding path program 1 times [2020-04-17 22:27:32,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:27:32,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337979142] [2020-04-17 22:27:32,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:27:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:27:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:27:32,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337979142] [2020-04-17 22:27:32,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:27:32,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:27:32,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979689536] [2020-04-17 22:27:32,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:27:32,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:27:32,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:27:32,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:27:32,454 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 5 states. [2020-04-17 22:27:32,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:27:32,478 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-04-17 22:27:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:27:32,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-17 22:27:32,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:27:32,480 INFO L225 Difference]: With dead ends: 25 [2020-04-17 22:27:32,480 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:27:32,480 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:27:32,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:27:32,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:27:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:27:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:27:32,481 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-04-17 22:27:32,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:27:32,481 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:27:32,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:27:32,482 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:27:32,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:27:32,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:27:32 BasicIcfg [2020-04-17 22:27:32,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:27:32,494 INFO L168 Benchmark]: Toolchain (without parser) took 3876.74 ms. Allocated memory was 144.2 MB in the beginning and 249.0 MB in the end (delta: 104.9 MB). Free memory was 100.4 MB in the beginning and 145.1 MB in the end (delta: -44.7 MB). Peak memory consumption was 60.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:27:32,495 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 22:27:32,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.47 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 98.4 MB in the beginning and 158.5 MB in the end (delta: -60.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:27:32,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 201.9 MB. Free memory was 158.5 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. [2020-04-17 22:27:32,501 INFO L168 Benchmark]: Boogie Preprocessor took 26.62 ms. Allocated memory is still 201.9 MB. Free memory was 156.5 MB in the beginning and 155.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:27:32,503 INFO L168 Benchmark]: RCFGBuilder took 448.73 ms. Allocated memory is still 201.9 MB. Free memory was 155.1 MB in the beginning and 135.7 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:27:32,504 INFO L168 Benchmark]: TraceAbstraction took 2677.61 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 135.0 MB in the beginning and 145.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:27:32,512 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 649.47 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 98.4 MB in the beginning and 158.5 MB in the end (delta: -60.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 201.9 MB. Free memory was 158.5 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. * Boogie Preprocessor took 26.62 ms. Allocated memory is still 201.9 MB. Free memory was 156.5 MB in the beginning and 155.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.73 ms. Allocated memory is still 201.9 MB. Free memory was 155.1 MB in the beginning and 135.7 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2677.61 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 135.0 MB in the beginning and 145.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 59 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 11 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 382 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1300 CheckedPairsTotal, 46 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 79 SDtfs, 33 SDslu, 63 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 833 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...