/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-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 06:57:23,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 06:57:23,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 06:57:23,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 06:57:23,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 06:57:23,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 06:57:23,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 06:57:23,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 06:57:23,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 06:57:23,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 06:57:23,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 06:57:23,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 06:57:23,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 06:57:23,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 06:57:23,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 06:57:23,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 06:57:23,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 06:57:23,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 06:57:23,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 06:57:23,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 06:57:23,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 06:57:23,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 06:57:23,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 06:57:23,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 06:57:23,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 06:57:23,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 06:57:23,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 06:57:23,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 06:57:23,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 06:57:23,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 06:57:23,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 06:57:23,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 06:57:23,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 06:57:23,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 06:57:23,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 06:57:23,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 06:57:23,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 06:57:23,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 06:57:23,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 06:57:23,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 06:57:23,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 06:57:23,329 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-NoLbe.epf [2020-04-18 06:57:23,351 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 06:57:23,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 06:57:23,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 06:57:23,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 06:57:23,354 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 06:57:23,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 06:57:23,354 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 06:57:23,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 06:57:23,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 06:57:23,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 06:57:23,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 06:57:23,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 06:57:23,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 06:57:23,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 06:57:23,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 06:57:23,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 06:57:23,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 06:57:23,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 06:57:23,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 06:57:23,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 06:57:23,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 06:57:23,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 06:57:23,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 06:57:23,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 06:57:23,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 06:57:23,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 06:57:23,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 06:57:23,359 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 06:57:23,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 06:57:23,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 06:57:23,641 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 06:57:23,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 06:57:23,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 06:57:23,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 06:57:23,668 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 06:57:23,669 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-04-18 06:57:23,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c548b784/6364d670842646168e44f4528a437a06/FLAGec10054ec [2020-04-18 06:57:24,286 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 06:57:24,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-04-18 06:57:24,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c548b784/6364d670842646168e44f4528a437a06/FLAGec10054ec [2020-04-18 06:57:24,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c548b784/6364d670842646168e44f4528a437a06 [2020-04-18 06:57:24,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 06:57:24,631 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 06:57:24,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 06:57:24,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 06:57:24,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 06:57:24,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:57:24" (1/1) ... [2020-04-18 06:57:24,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44096f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:24, skipping insertion in model container [2020-04-18 06:57:24,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:57:24" (1/1) ... [2020-04-18 06:57:24,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 06:57:24,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 06:57:25,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:57:25,167 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 06:57:25,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:57:25,311 INFO L208 MainTranslator]: Completed translation [2020-04-18 06:57:25,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:25 WrapperNode [2020-04-18 06:57:25,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 06:57:25,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 06:57:25,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 06:57:25,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 06:57:25,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:25" (1/1) ... [2020-04-18 06:57:25,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:25" (1/1) ... [2020-04-18 06:57:25,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 06:57:25,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 06:57:25,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 06:57:25,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 06:57:25,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:25" (1/1) ... [2020-04-18 06:57:25,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:25" (1/1) ... [2020-04-18 06:57:25,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:25" (1/1) ... [2020-04-18 06:57:25,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:25" (1/1) ... [2020-04-18 06:57:25,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:25" (1/1) ... [2020-04-18 06:57:25,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:25" (1/1) ... [2020-04-18 06:57:25,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:25" (1/1) ... [2020-04-18 06:57:25,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 06:57:25,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 06:57:25,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 06:57:25,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 06:57:25,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:25" (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 [2020-04-18 06:57:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 06:57:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 06:57:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 06:57:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 06:57:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 06:57:25,449 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 06:57:25,449 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 06:57:25,449 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 06:57:25,449 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 06:57:25,449 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 06:57:25,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 06:57:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 06:57:25,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 06:57:25,451 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 06:57:25,855 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 06:57:25,855 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 06:57:25,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:57:25 BoogieIcfgContainer [2020-04-18 06:57:25,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 06:57:25,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 06:57:25,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 06:57:25,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 06:57:25,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:57:24" (1/3) ... [2020-04-18 06:57:25,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241c1fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:57:25, skipping insertion in model container [2020-04-18 06:57:25,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:25" (2/3) ... [2020-04-18 06:57:25,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241c1fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:57:25, skipping insertion in model container [2020-04-18 06:57:25,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:57:25" (3/3) ... [2020-04-18 06:57:25,868 INFO L109 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2020-04-18 06:57:25,878 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 06:57:25,878 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 06:57:25,885 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 06:57:25,886 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 06:57:25,911 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,912 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,912 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,912 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,913 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,913 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,914 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,914 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,914 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,915 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,915 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,915 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,916 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,916 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,916 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,916 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,917 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,917 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,921 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,922 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,922 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,922 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,928 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,928 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,929 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,929 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,931 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,932 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,932 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,932 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:57:25,953 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 06:57:25,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 06:57:25,973 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 06:57:25,974 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 06:57:25,974 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 06:57:25,974 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 06:57:25,974 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 06:57:25,974 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 06:57:25,974 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 06:57:25,987 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 06:57:26,361 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7267 states. [2020-04-18 06:57:26,363 INFO L276 IsEmpty]: Start isEmpty. Operand 7267 states. [2020-04-18 06:57:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 06:57:26,396 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:57:26,397 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:57:26,398 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:57:26,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:57:26,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1418646987, now seen corresponding path program 1 times [2020-04-18 06:57:26,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:57:26,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589595803] [2020-04-18 06:57:26,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:57:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:57:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:57:26,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589595803] [2020-04-18 06:57:26,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:57:26,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:57:26,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769436331] [2020-04-18 06:57:26,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:57:26,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:57:26,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:57:26,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:57:26,929 INFO L87 Difference]: Start difference. First operand 7267 states. Second operand 6 states. [2020-04-18 06:57:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:57:27,483 INFO L93 Difference]: Finished difference Result 16775 states and 57405 transitions. [2020-04-18 06:57:27,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:57:27,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-04-18 06:57:27,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:57:27,566 INFO L225 Difference]: With dead ends: 16775 [2020-04-18 06:57:27,566 INFO L226 Difference]: Without dead ends: 5457 [2020-04-18 06:57:27,569 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:57:27,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2020-04-18 06:57:27,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 4545. [2020-04-18 06:57:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4545 states. [2020-04-18 06:57:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4545 states to 4545 states and 15266 transitions. [2020-04-18 06:57:27,870 INFO L78 Accepts]: Start accepts. Automaton has 4545 states and 15266 transitions. Word has length 35 [2020-04-18 06:57:27,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:57:27,871 INFO L479 AbstractCegarLoop]: Abstraction has 4545 states and 15266 transitions. [2020-04-18 06:57:27,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:57:27,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4545 states and 15266 transitions. [2020-04-18 06:57:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 06:57:27,881 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:57:27,881 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:57:27,881 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:57:27,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:57:27,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1657543372, now seen corresponding path program 1 times [2020-04-18 06:57:27,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:57:27,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513318171] [2020-04-18 06:57:27,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:57:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:57:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:57:28,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513318171] [2020-04-18 06:57:28,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:57:28,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:57:28,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894623281] [2020-04-18 06:57:28,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:57:28,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:57:28,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:57:28,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:57:28,044 INFO L87 Difference]: Start difference. First operand 4545 states and 15266 transitions. Second operand 6 states. [2020-04-18 06:57:28,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:57:28,292 INFO L93 Difference]: Finished difference Result 4993 states and 16630 transitions. [2020-04-18 06:57:28,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:57:28,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-04-18 06:57:28,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:57:28,324 INFO L225 Difference]: With dead ends: 4993 [2020-04-18 06:57:28,324 INFO L226 Difference]: Without dead ends: 4209 [2020-04-18 06:57:28,325 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:57:28,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2020-04-18 06:57:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 3921. [2020-04-18 06:57:28,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3921 states. [2020-04-18 06:57:28,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 13142 transitions. [2020-04-18 06:57:28,453 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 13142 transitions. Word has length 37 [2020-04-18 06:57:28,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:57:28,454 INFO L479 AbstractCegarLoop]: Abstraction has 3921 states and 13142 transitions. [2020-04-18 06:57:28,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:57:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 13142 transitions. [2020-04-18 06:57:28,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 06:57:28,462 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:57:28,462 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:57:28,463 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:57:28,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:57:28,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1358994100, now seen corresponding path program 1 times [2020-04-18 06:57:28,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:57:28,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912305966] [2020-04-18 06:57:28,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:57:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:57:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:57:28,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912305966] [2020-04-18 06:57:28,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:57:28,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:57:28,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207248340] [2020-04-18 06:57:28,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:57:28,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:57:28,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:57:28,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:57:28,609 INFO L87 Difference]: Start difference. First operand 3921 states and 13142 transitions. Second operand 7 states. [2020-04-18 06:57:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:57:28,971 INFO L93 Difference]: Finished difference Result 5797 states and 19018 transitions. [2020-04-18 06:57:28,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:57:28,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-04-18 06:57:28,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:57:29,006 INFO L225 Difference]: With dead ends: 5797 [2020-04-18 06:57:29,007 INFO L226 Difference]: Without dead ends: 4509 [2020-04-18 06:57:29,007 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:57:29,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2020-04-18 06:57:29,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 3741. [2020-04-18 06:57:29,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3741 states. [2020-04-18 06:57:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 12458 transitions. [2020-04-18 06:57:29,126 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 12458 transitions. Word has length 37 [2020-04-18 06:57:29,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:57:29,127 INFO L479 AbstractCegarLoop]: Abstraction has 3741 states and 12458 transitions. [2020-04-18 06:57:29,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:57:29,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 12458 transitions. [2020-04-18 06:57:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 06:57:29,136 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:57:29,136 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:57:29,137 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:57:29,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:57:29,137 INFO L82 PathProgramCache]: Analyzing trace with hash 587165197, now seen corresponding path program 1 times [2020-04-18 06:57:29,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:57:29,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854044990] [2020-04-18 06:57:29,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:57:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:57:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:57:29,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854044990] [2020-04-18 06:57:29,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:57:29,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:57:29,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155442263] [2020-04-18 06:57:29,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:57:29,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:57:29,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:57:29,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:57:29,254 INFO L87 Difference]: Start difference. First operand 3741 states and 12458 transitions. Second operand 6 states. [2020-04-18 06:57:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:57:29,400 INFO L93 Difference]: Finished difference Result 4804 states and 15718 transitions. [2020-04-18 06:57:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:57:29,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-04-18 06:57:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:57:29,415 INFO L225 Difference]: With dead ends: 4804 [2020-04-18 06:57:29,415 INFO L226 Difference]: Without dead ends: 3404 [2020-04-18 06:57:29,415 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:57:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2020-04-18 06:57:29,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 3404. [2020-04-18 06:57:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2020-04-18 06:57:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 11115 transitions. [2020-04-18 06:57:29,512 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 11115 transitions. Word has length 39 [2020-04-18 06:57:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:57:29,512 INFO L479 AbstractCegarLoop]: Abstraction has 3404 states and 11115 transitions. [2020-04-18 06:57:29,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:57:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 11115 transitions. [2020-04-18 06:57:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 06:57:29,521 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:57:29,521 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:57:29,521 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:57:29,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:57:29,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1669850469, now seen corresponding path program 1 times [2020-04-18 06:57:29,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:57:29,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191421897] [2020-04-18 06:57:29,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:57:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:57:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:57:29,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191421897] [2020-04-18 06:57:29,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:57:29,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:57:29,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208946760] [2020-04-18 06:57:29,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:57:29,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:57:29,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:57:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:57:29,666 INFO L87 Difference]: Start difference. First operand 3404 states and 11115 transitions. Second operand 7 states. [2020-04-18 06:57:29,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:57:29,875 INFO L93 Difference]: Finished difference Result 3512 states and 11088 transitions. [2020-04-18 06:57:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:57:29,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-04-18 06:57:29,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:57:29,884 INFO L225 Difference]: With dead ends: 3512 [2020-04-18 06:57:29,885 INFO L226 Difference]: Without dead ends: 2324 [2020-04-18 06:57:29,885 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 06:57:29,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2020-04-18 06:57:29,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 2308. [2020-04-18 06:57:29,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2308 states. [2020-04-18 06:57:29,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 7133 transitions. [2020-04-18 06:57:29,960 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 7133 transitions. Word has length 40 [2020-04-18 06:57:29,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:57:29,961 INFO L479 AbstractCegarLoop]: Abstraction has 2308 states and 7133 transitions. [2020-04-18 06:57:29,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:57:29,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 7133 transitions. [2020-04-18 06:57:29,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 06:57:29,966 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:57:29,966 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:57:29,970 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:57:29,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:57:29,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1576408866, now seen corresponding path program 1 times [2020-04-18 06:57:29,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:57:29,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969604468] [2020-04-18 06:57:29,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:57:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:57:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:57:30,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969604468] [2020-04-18 06:57:30,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:57:30,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:57:30,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658120519] [2020-04-18 06:57:30,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:57:30,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:57:30,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:57:30,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:57:30,130 INFO L87 Difference]: Start difference. First operand 2308 states and 7133 transitions. Second operand 8 states. [2020-04-18 06:57:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:57:30,330 INFO L93 Difference]: Finished difference Result 1804 states and 5399 transitions. [2020-04-18 06:57:30,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 06:57:30,331 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-04-18 06:57:30,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:57:30,335 INFO L225 Difference]: With dead ends: 1804 [2020-04-18 06:57:30,335 INFO L226 Difference]: Without dead ends: 1096 [2020-04-18 06:57:30,336 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:57:30,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2020-04-18 06:57:30,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1000. [2020-04-18 06:57:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-04-18 06:57:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 2866 transitions. [2020-04-18 06:57:30,366 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 2866 transitions. Word has length 42 [2020-04-18 06:57:30,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:57:30,366 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 2866 transitions. [2020-04-18 06:57:30,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:57:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 2866 transitions. [2020-04-18 06:57:30,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 06:57:30,371 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:57:30,372 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:57:30,372 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:57:30,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:57:30,372 INFO L82 PathProgramCache]: Analyzing trace with hash 271339240, now seen corresponding path program 1 times [2020-04-18 06:57:30,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:57:30,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360996708] [2020-04-18 06:57:30,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:57:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:57:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:57:30,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360996708] [2020-04-18 06:57:30,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:57:30,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:57:30,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097532333] [2020-04-18 06:57:30,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:57:30,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:57:30,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:57:30,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:57:30,508 INFO L87 Difference]: Start difference. First operand 1000 states and 2866 transitions. Second operand 7 states. [2020-04-18 06:57:30,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:57:30,596 INFO L93 Difference]: Finished difference Result 1451 states and 4183 transitions. [2020-04-18 06:57:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 06:57:30,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-04-18 06:57:30,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:57:30,602 INFO L225 Difference]: With dead ends: 1451 [2020-04-18 06:57:30,602 INFO L226 Difference]: Without dead ends: 600 [2020-04-18 06:57:30,602 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:57:30,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-04-18 06:57:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2020-04-18 06:57:30,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-04-18 06:57:30,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1686 transitions. [2020-04-18 06:57:30,616 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1686 transitions. Word has length 46 [2020-04-18 06:57:30,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:57:30,617 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 1686 transitions. [2020-04-18 06:57:30,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:57:30,617 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1686 transitions. [2020-04-18 06:57:30,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 06:57:30,619 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:57:30,619 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:57:30,619 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:57:30,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:57:30,619 INFO L82 PathProgramCache]: Analyzing trace with hash -555597942, now seen corresponding path program 2 times [2020-04-18 06:57:30,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:57:30,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243564775] [2020-04-18 06:57:30,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:57:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:57:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:57:30,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243564775] [2020-04-18 06:57:30,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:57:30,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:57:30,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213643587] [2020-04-18 06:57:30,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:57:30,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:57:30,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:57:30,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:57:30,752 INFO L87 Difference]: Start difference. First operand 600 states and 1686 transitions. Second operand 8 states. [2020-04-18 06:57:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:57:30,845 INFO L93 Difference]: Finished difference Result 546 states and 1524 transitions. [2020-04-18 06:57:30,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 06:57:30,846 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-04-18 06:57:30,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:57:30,846 INFO L225 Difference]: With dead ends: 546 [2020-04-18 06:57:30,846 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 06:57:30,847 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-04-18 06:57:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 06:57:30,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 06:57:30,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 06:57:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 06:57:30,847 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-04-18 06:57:30,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:57:30,848 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 06:57:30,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:57:30,848 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 06:57:30,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 06:57:30,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:57:30 BasicIcfg [2020-04-18 06:57:30,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 06:57:30,861 INFO L168 Benchmark]: Toolchain (without parser) took 6243.90 ms. Allocated memory was 144.7 MB in the beginning and 375.9 MB in the end (delta: 231.2 MB). Free memory was 101.2 MB in the beginning and 311.8 MB in the end (delta: -210.6 MB). Peak memory consumption was 210.4 MB. Max. memory is 7.1 GB. [2020-04-18 06:57:30,863 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 06:57:30,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.08 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 99.3 MB in the beginning and 158.5 MB in the end (delta: -59.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 06:57:30,864 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.47 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 06:57:30,865 INFO L168 Benchmark]: Boogie Preprocessor took 25.15 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 06:57:30,868 INFO L168 Benchmark]: RCFGBuilder took 472.68 ms. Allocated memory is still 201.3 MB. Free memory was 154.5 MB in the beginning and 132.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 06:57:30,868 INFO L168 Benchmark]: TraceAbstraction took 4993.01 ms. Allocated memory was 201.3 MB in the beginning and 375.9 MB in the end (delta: 174.6 MB). Free memory was 132.5 MB in the beginning and 311.8 MB in the end (delta: -179.3 MB). Peak memory consumption was 185.1 MB. Max. memory is 7.1 GB. [2020-04-18 06:57:30,879 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 680.08 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 99.3 MB in the beginning and 158.5 MB in the end (delta: -59.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.47 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.15 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 472.68 ms. Allocated memory is still 201.3 MB. Free memory was 154.5 MB in the beginning and 132.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4993.01 ms. Allocated memory was 201.3 MB in the beginning and 375.9 MB in the end (delta: 174.6 MB). Free memory was 132.5 MB in the beginning and 311.8 MB in the end (delta: -179.3 MB). Peak memory consumption was 185.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 720 SDtfs, 1117 SDslu, 2309 SDs, 0 SdLazy, 326 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7267occurred 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: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 2080 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 322 NumberOfCodeBlocks, 322 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 314 ConstructedInterpolants, 0 QuantifiedInterpolants, 49214 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...