/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/safe014_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:05:28,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:05:28,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:05:28,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:05:28,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:05:28,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:05:28,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:05:28,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:05:28,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:05:28,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:05:28,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:05:28,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:05:28,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:05:28,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:05:28,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:05:28,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:05:28,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:05:28,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:05:28,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:05:28,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:05:28,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:05:28,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:05:28,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:05:28,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:05:28,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:05:28,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:05:28,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:05:28,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:05:28,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:05:28,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:05:28,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:05:28,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:05:28,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:05:28,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:05:28,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:05:28,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:05:28,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:05:28,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:05:28,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:05:28,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:05:28,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:05:28,294 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 22:05:28,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:05:28,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:05:28,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:05:28,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:05:28,323 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:05:28,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:05:28,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:05:28,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:05:28,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:05:28,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:05:28,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:05:28,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:05:28,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:05:28,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:05:28,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:05:28,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:05:28,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:05:28,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:05:28,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:05:28,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:05:28,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:05:28,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:05:28,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:05:28,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:05:28,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:05:28,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:05:28,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:05:28,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:05:28,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:05:28,630 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:05:28,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:05:28,657 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:05:28,659 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:05:28,660 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:05:28,660 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-04-17 22:05:28,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd66c33f7/f26b55ca4abe4cfeb64fabb07e5ceb67/FLAG543a8d3e6 [2020-04-17 22:05:29,293 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:05:29,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-04-17 22:05:29,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd66c33f7/f26b55ca4abe4cfeb64fabb07e5ceb67/FLAG543a8d3e6 [2020-04-17 22:05:29,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd66c33f7/f26b55ca4abe4cfeb64fabb07e5ceb67 [2020-04-17 22:05:29,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:05:29,619 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:05:29,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:05:29,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:05:29,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:05:29,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:05:29" (1/1) ... [2020-04-17 22:05:29,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534d62a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:29, skipping insertion in model container [2020-04-17 22:05:29,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:05:29" (1/1) ... [2020-04-17 22:05:29,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:05:29,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:05:30,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:05:30,208 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:05:30,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:05:30,356 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:05:30,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:30 WrapperNode [2020-04-17 22:05:30,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:05:30,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:05:30,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:05:30,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:05:30,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:30" (1/1) ... [2020-04-17 22:05:30,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:30" (1/1) ... [2020-04-17 22:05:30,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:05:30,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:05:30,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:05:30,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:05:30,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:30" (1/1) ... [2020-04-17 22:05:30,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:30" (1/1) ... [2020-04-17 22:05:30,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:30" (1/1) ... [2020-04-17 22:05:30,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:30" (1/1) ... [2020-04-17 22:05:30,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:30" (1/1) ... [2020-04-17 22:05:30,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:30" (1/1) ... [2020-04-17 22:05:30,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:30" (1/1) ... [2020-04-17 22:05:30,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:05:30,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:05:30,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:05:30,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:05:30,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:30" (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 22:05:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:05:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:05:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:05:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:05:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:05:30,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:05:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:05:30,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:05:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:05:30,509 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:05:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:05:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:05:30,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:05:30,512 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 22:05:30,903 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:05:30,904 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:05:30,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:05:30 BoogieIcfgContainer [2020-04-17 22:05:30,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:05:30,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:05:30,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:05:30,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:05:30,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:05:29" (1/3) ... [2020-04-17 22:05:30,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724729aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:05:30, skipping insertion in model container [2020-04-17 22:05:30,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:30" (2/3) ... [2020-04-17 22:05:30,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724729aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:05:30, skipping insertion in model container [2020-04-17 22:05:30,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:05:30" (3/3) ... [2020-04-17 22:05:30,919 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2020-04-17 22:05:30,928 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:05:30,929 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:05:30,937 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:05:30,938 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:05:30,975 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,975 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,975 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,976 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,977 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,977 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,978 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,978 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,978 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,978 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,979 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,979 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,980 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,980 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,981 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,981 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,982 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,983 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,989 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,989 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,990 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:30,990 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:31,008 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:31,009 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:31,010 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:31,010 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:31,021 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:31,021 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:31,022 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:31,022 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:31,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:05:31,073 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:05:31,074 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:05:31,074 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:05:31,074 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:05:31,074 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:05:31,074 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:05:31,075 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:05:31,076 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:05:31,104 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 22:05:31,108 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:05:31,184 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:05:31,184 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:05:31,193 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:05:31,198 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:05:31,246 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:05:31,247 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:05:31,248 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:05:31,252 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:05:31,253 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:05:32,935 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 22:05:33,119 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-17 22:05:33,198 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-17 22:05:33,198 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-17 22:05:33,202 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 22:05:33,229 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 22:05:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 22:05:33,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:05:33,240 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:33,241 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:33,242 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:33,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:33,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-17 22:05:33,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:33,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609567397] [2020-04-17 22:05:33,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:33,482 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 22:05:33,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609567397] [2020-04-17 22:05:33,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:33,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:05:33,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802176914] [2020-04-17 22:05:33,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:05:33,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:33,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:05:33,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:05:33,509 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 22:05:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:33,558 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 22:05:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:05:33,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:05:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:33,590 INFO L225 Difference]: With dead ends: 282 [2020-04-17 22:05:33,591 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 22:05:33,595 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 22:05:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 22:05:33,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 22:05:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 22:05:33,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 22:05:33,664 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 22:05:33,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:33,665 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 22:05:33,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:05:33,666 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 22:05:33,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:05:33,667 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:33,668 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:33,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:33,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:33,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-04-17 22:05:33,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:33,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319864962] [2020-04-17 22:05:33,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:33,789 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 22:05:33,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319864962] [2020-04-17 22:05:33,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:33,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:05:33,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041398143] [2020-04-17 22:05:33,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:05:33,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:33,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:05:33,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:05:33,795 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-17 22:05:33,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:33,845 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-17 22:05:33,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:05:33,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 22:05:33,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:33,848 INFO L225 Difference]: With dead ends: 242 [2020-04-17 22:05:33,848 INFO L226 Difference]: Without dead ends: 116 [2020-04-17 22:05:33,851 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 22:05:33,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-04-17 22:05:33,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-04-17 22:05:33,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-04-17 22:05:33,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-04-17 22:05:33,873 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-04-17 22:05:33,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:33,873 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-04-17 22:05:33,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:05:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-04-17 22:05:33,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:05:33,875 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:33,875 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:33,875 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:33,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:33,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-04-17 22:05:33,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:33,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812970427] [2020-04-17 22:05:33,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:33,930 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 22:05:33,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812970427] [2020-04-17 22:05:33,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:33,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:05:33,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835430529] [2020-04-17 22:05:33,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:05:33,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:33,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:05:33,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:05:33,933 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 4 states. [2020-04-17 22:05:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:33,961 INFO L93 Difference]: Finished difference Result 164 states and 394 transitions. [2020-04-17 22:05:33,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:05:33,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:05:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:33,967 INFO L225 Difference]: With dead ends: 164 [2020-04-17 22:05:33,967 INFO L226 Difference]: Without dead ends: 92 [2020-04-17 22:05:33,968 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 22:05:33,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-04-17 22:05:33,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-04-17 22:05:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-04-17 22:05:33,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 214 transitions. [2020-04-17 22:05:33,979 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 214 transitions. Word has length 11 [2020-04-17 22:05:33,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:33,981 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 214 transitions. [2020-04-17 22:05:33,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:05:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 214 transitions. [2020-04-17 22:05:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:05:33,982 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:33,982 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:33,983 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:33,983 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-04-17 22:05:33,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:33,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202555987] [2020-04-17 22:05:33,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:34,098 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 22:05:34,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202555987] [2020-04-17 22:05:34,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:34,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:05:34,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046614388] [2020-04-17 22:05:34,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:05:34,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:34,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:05:34,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:05:34,103 INFO L87 Difference]: Start difference. First operand 92 states and 214 transitions. Second operand 4 states. [2020-04-17 22:05:34,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:34,132 INFO L93 Difference]: Finished difference Result 122 states and 275 transitions. [2020-04-17 22:05:34,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:05:34,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:05:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:34,134 INFO L225 Difference]: With dead ends: 122 [2020-04-17 22:05:34,134 INFO L226 Difference]: Without dead ends: 68 [2020-04-17 22:05:34,134 INFO L678 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 [2020-04-17 22:05:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-17 22:05:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-17 22:05:34,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-17 22:05:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-17 22:05:34,145 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-04-17 22:05:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:34,145 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-17 22:05:34,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:05:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-17 22:05:34,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:05:34,149 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:34,149 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:34,150 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:34,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:34,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-04-17 22:05:34,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:34,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391071380] [2020-04-17 22:05:34,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:34,245 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 22:05:34,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391071380] [2020-04-17 22:05:34,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:34,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:05:34,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706355838] [2020-04-17 22:05:34,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:05:34,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:34,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:05:34,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:05:34,248 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-04-17 22:05:34,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:34,289 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-04-17 22:05:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:05:34,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 22:05:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:34,291 INFO L225 Difference]: With dead ends: 81 [2020-04-17 22:05:34,291 INFO L226 Difference]: Without dead ends: 59 [2020-04-17 22:05:34,292 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 22:05:34,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-17 22:05:34,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-17 22:05:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-17 22:05:34,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-04-17 22:05:34,297 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-04-17 22:05:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:34,298 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-04-17 22:05:34,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:05:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-04-17 22:05:34,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:05:34,299 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:34,299 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:34,299 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:34,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:34,300 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-04-17 22:05:34,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:34,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852460387] [2020-04-17 22:05:34,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:34,407 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 22:05:34,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852460387] [2020-04-17 22:05:34,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:34,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:05:34,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838745243] [2020-04-17 22:05:34,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:05:34,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:34,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:05:34,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:05:34,410 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-04-17 22:05:34,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:34,477 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-04-17 22:05:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:05:34,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 22:05:34,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:34,479 INFO L225 Difference]: With dead ends: 60 [2020-04-17 22:05:34,479 INFO L226 Difference]: Without dead ends: 45 [2020-04-17 22:05:34,480 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 22:05:34,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-04-17 22:05:34,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-04-17 22:05:34,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-04-17 22:05:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-04-17 22:05:34,483 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-04-17 22:05:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:34,483 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-04-17 22:05:34,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:05:34,484 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-04-17 22:05:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:05:34,484 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:34,485 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:34,485 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:34,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:34,485 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-04-17 22:05:34,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:34,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141391576] [2020-04-17 22:05:34,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:34,543 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 22:05:34,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141391576] [2020-04-17 22:05:34,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:34,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:05:34,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933014814] [2020-04-17 22:05:34,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:05:34,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:34,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:05:34,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:05:34,545 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-04-17 22:05:34,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:34,606 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-04-17 22:05:34,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:05:34,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 22:05:34,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:34,608 INFO L225 Difference]: With dead ends: 42 [2020-04-17 22:05:34,608 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 22:05:34,609 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:05:34,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 22:05:34,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 22:05:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 22:05:34,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-17 22:05:34,612 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-17 22:05:34,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:34,612 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-17 22:05:34,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:05:34,613 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-17 22:05:34,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:05:34,613 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:34,613 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:34,614 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:34,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:34,614 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-04-17 22:05:34,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:34,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417286452] [2020-04-17 22:05:34,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:34,676 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 22:05:34,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417286452] [2020-04-17 22:05:34,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:34,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:05:34,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488987576] [2020-04-17 22:05:34,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:05:34,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:34,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:05:34,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:05:34,679 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-17 22:05:34,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:34,699 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-17 22:05:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:05:34,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:05:34,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:34,700 INFO L225 Difference]: With dead ends: 35 [2020-04-17 22:05:34,700 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:05:34,701 INFO L678 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 [2020-04-17 22:05:34,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:05:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:05:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:05:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:05:34,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 22:05:34,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:34,702 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:05:34,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:05:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:05:34,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:05:34,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:05:34 BasicIcfg [2020-04-17 22:05:34,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:05:34,709 INFO L168 Benchmark]: Toolchain (without parser) took 5108.98 ms. Allocated memory was 142.6 MB in the beginning and 245.9 MB in the end (delta: 103.3 MB). Free memory was 106.5 MB in the beginning and 128.8 MB in the end (delta: -22.3 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:05:34,710 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 142.6 MB. Free memory was 125.7 MB in the beginning and 125.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 22:05:34,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.72 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 104.4 MB in the beginning and 162.0 MB in the end (delta: -57.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:05:34,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.93 ms. Allocated memory is still 205.0 MB. Free memory was 162.0 MB in the beginning and 160.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-17 22:05:34,713 INFO L168 Benchmark]: Boogie Preprocessor took 27.32 ms. Allocated memory is still 205.0 MB. Free memory was 160.2 MB in the beginning and 158.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-04-17 22:05:34,713 INFO L168 Benchmark]: RCFGBuilder took 457.09 ms. Allocated memory is still 205.0 MB. Free memory was 158.3 MB in the beginning and 136.9 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:05:34,714 INFO L168 Benchmark]: TraceAbstraction took 3797.12 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 136.3 MB in the beginning and 128.8 MB in the end (delta: 7.5 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:05:34,719 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 142.6 MB. Free memory was 125.7 MB in the beginning and 125.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 736.72 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 104.4 MB in the beginning and 162.0 MB in the end (delta: -57.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 65.93 ms. Allocated memory is still 205.0 MB. Free memory was 162.0 MB in the beginning and 160.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.32 ms. Allocated memory is still 205.0 MB. Free memory was 160.2 MB in the beginning and 158.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.09 ms. Allocated memory is still 205.0 MB. Free memory was 158.3 MB in the beginning and 136.9 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3797.12 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 136.3 MB in the beginning and 128.8 MB in the end (delta: 7.5 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 670 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 138 SDtfs, 138 SDslu, 173 SDs, 0 SdLazy, 111 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...