/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/safe000_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:44:33,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:44:33,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:44:33,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:44:33,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:44:33,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:44:33,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:44:33,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:44:33,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:44:33,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:44:33,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:44:33,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:44:33,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:44:33,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:44:33,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:44:33,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:44:33,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:44:33,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:44:33,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:44:33,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:44:33,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:44:33,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:44:33,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:44:33,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:44:33,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:44:33,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:44:33,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:44:33,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:44:33,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:44:33,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:44:33,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:44:33,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:44:33,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:44:33,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:44:33,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:44:33,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:44:33,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:44:33,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:44:33,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:44:33,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:44:33,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:44:33,279 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 21:44:33,294 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:44:33,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:44:33,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:44:33,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:44:33,296 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:44:33,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:44:33,296 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:44:33,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:44:33,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:44:33,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:44:33,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:44:33,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:44:33,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:44:33,298 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:44:33,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:44:33,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:44:33,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:44:33,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:44:33,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:44:33,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:44:33,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:44:33,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:44:33,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:44:33,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:44:33,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:44:33,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:44:33,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:44:33,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:44:33,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:44:33,596 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:44:33,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:44:33,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:44:33,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:44:33,620 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:44:33,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2020-04-17 21:44:33,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9bed3cd/61561881a882468ead6b1261a6e27dfa/FLAG117ff72d2 [2020-04-17 21:44:34,273 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:44:34,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2020-04-17 21:44:34,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9bed3cd/61561881a882468ead6b1261a6e27dfa/FLAG117ff72d2 [2020-04-17 21:44:34,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9bed3cd/61561881a882468ead6b1261a6e27dfa [2020-04-17 21:44:34,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:44:34,575 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:44:34,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:44:34,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:44:34,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:44:34,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:44:34" (1/1) ... [2020-04-17 21:44:34,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6b4f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:34, skipping insertion in model container [2020-04-17 21:44:34,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:44:34" (1/1) ... [2020-04-17 21:44:34,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:44:34,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:44:35,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:44:35,155 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:44:35,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:44:35,293 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:44:35,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:35 WrapperNode [2020-04-17 21:44:35,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:44:35,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:44:35,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:44:35,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:44:35,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:35" (1/1) ... [2020-04-17 21:44:35,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:35" (1/1) ... [2020-04-17 21:44:35,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:44:35,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:44:35,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:44:35,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:44:35,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:35" (1/1) ... [2020-04-17 21:44:35,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:35" (1/1) ... [2020-04-17 21:44:35,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:35" (1/1) ... [2020-04-17 21:44:35,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:35" (1/1) ... [2020-04-17 21:44:35,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:35" (1/1) ... [2020-04-17 21:44:35,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:35" (1/1) ... [2020-04-17 21:44:35,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:35" (1/1) ... [2020-04-17 21:44:35,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:44:35,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:44:35,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:44:35,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:44:35,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:35" (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 21:44:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:44:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:44:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:44:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:44:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:44:35,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:44:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:44:35,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:44:35,427 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:44:35,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:44:35,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:44:35,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:44:35,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:44:35,429 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 21:44:35,853 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:44:35,853 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:44:35,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:44:35 BoogieIcfgContainer [2020-04-17 21:44:35,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:44:35,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:44:35,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:44:35,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:44:35,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:44:34" (1/3) ... [2020-04-17 21:44:35,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fc596f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:44:35, skipping insertion in model container [2020-04-17 21:44:35,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:44:35" (2/3) ... [2020-04-17 21:44:35,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fc596f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:44:35, skipping insertion in model container [2020-04-17 21:44:35,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:44:35" (3/3) ... [2020-04-17 21:44:35,866 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_tso.opt.i [2020-04-17 21:44:35,877 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:44:35,877 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:44:35,885 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:44:35,886 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:44:35,912 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,912 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,913 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,913 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,914 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,914 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,914 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,915 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,915 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,915 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,916 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,916 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,916 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,917 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,917 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,917 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,918 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,918 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,922 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,923 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,923 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,923 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,931 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,931 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,932 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,933 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,952 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,952 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,952 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,953 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:44:35,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:44:35,995 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:44:35,995 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:44:35,995 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:44:35,995 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:44:35,996 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:44:35,996 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:44:35,996 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:44:35,996 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:44:36,012 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 21:44:36,014 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 21:44:36,075 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 21:44:36,076 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:44:36,082 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 21:44:36,085 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 21:44:36,105 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 21:44:36,105 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:44:36,106 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 21:44:36,108 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 21:44:36,109 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:44:37,834 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 21:44:38,010 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-17 21:44:38,099 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-17 21:44:38,100 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-17 21:44:38,105 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 21:44:38,145 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 21:44:38,147 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 21:44:38,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:44:38,157 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:44:38,158 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:44:38,158 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:44:38,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:44:38,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-17 21:44:38,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:44:38,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899768689] [2020-04-17 21:44:38,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:44:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:44:38,418 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 21:44:38,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899768689] [2020-04-17 21:44:38,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:44:38,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:44:38,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384054517] [2020-04-17 21:44:38,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:44:38,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:44:38,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:44:38,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:44:38,437 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 21:44:38,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:44:38,488 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 21:44:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:44:38,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 21:44:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:44:38,509 INFO L225 Difference]: With dead ends: 282 [2020-04-17 21:44:38,509 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 21:44:38,511 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 21:44:38,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 21:44:38,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 21:44:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 21:44:38,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 21:44:38,600 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 21:44:38,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:44:38,602 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 21:44:38,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:44:38,602 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 21:44:38,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 21:44:38,605 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:44:38,605 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:44:38,605 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:44:38,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:44:38,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 1 times [2020-04-17 21:44:38,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:44:38,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199508821] [2020-04-17 21:44:38,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:44:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:44:38,691 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 21:44:38,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199508821] [2020-04-17 21:44:38,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:44:38,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:44:38,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555840216] [2020-04-17 21:44:38,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:44:38,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:44:38,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:44:38,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:44:38,695 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-17 21:44:38,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:44:38,755 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-17 21:44:38,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:44:38,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 21:44:38,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:44:38,758 INFO L225 Difference]: With dead ends: 242 [2020-04-17 21:44:38,758 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 21:44:38,762 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 21:44:38,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 21:44:38,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 21:44:38,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 21:44:38,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-17 21:44:38,778 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-04-17 21:44:38,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:44:38,778 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-17 21:44:38,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:44:38,779 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-17 21:44:38,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:44:38,782 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:44:38,782 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:44:38,782 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:44:38,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:44:38,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 1 times [2020-04-17 21:44:38,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:44:38,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526069115] [2020-04-17 21:44:38,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:44:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:44:38,846 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 21:44:38,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526069115] [2020-04-17 21:44:38,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:44:38,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:44:38,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466048653] [2020-04-17 21:44:38,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:44:38,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:44:38,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:44:38,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:44:38,848 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-04-17 21:44:38,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:44:38,865 INFO L93 Difference]: Finished difference Result 182 states and 430 transitions. [2020-04-17 21:44:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:44:38,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 21:44:38,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:44:38,867 INFO L225 Difference]: With dead ends: 182 [2020-04-17 21:44:38,867 INFO L226 Difference]: Without dead ends: 86 [2020-04-17 21:44:38,868 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 21:44:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-04-17 21:44:38,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-04-17 21:44:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-04-17 21:44:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-04-17 21:44:38,873 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 11 [2020-04-17 21:44:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:44:38,874 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-04-17 21:44:38,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:44:38,874 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-04-17 21:44:38,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:44:38,876 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:44:38,876 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:44:38,877 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:44:38,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:44:38,878 INFO L82 PathProgramCache]: Analyzing trace with hash -118658274, now seen corresponding path program 1 times [2020-04-17 21:44:38,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:44:38,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917266183] [2020-04-17 21:44:38,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:44:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:44:38,961 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 21:44:38,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917266183] [2020-04-17 21:44:38,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:44:38,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:44:38,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243936781] [2020-04-17 21:44:38,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:44:38,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:44:38,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:44:38,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:44:38,966 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 3 states. [2020-04-17 21:44:38,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:44:38,980 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-04-17 21:44:38,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:44:38,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-04-17 21:44:38,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:44:38,982 INFO L225 Difference]: With dead ends: 82 [2020-04-17 21:44:38,982 INFO L226 Difference]: Without dead ends: 82 [2020-04-17 21:44:38,982 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:44:38,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-04-17 21:44:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-04-17 21:44:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-04-17 21:44:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 174 transitions. [2020-04-17 21:44:38,988 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 174 transitions. Word has length 13 [2020-04-17 21:44:38,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:44:38,988 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 174 transitions. [2020-04-17 21:44:38,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:44:38,989 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-17 21:44:38,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:44:38,989 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:44:38,990 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:44:38,990 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:44:38,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:44:38,990 INFO L82 PathProgramCache]: Analyzing trace with hash 616515302, now seen corresponding path program 1 times [2020-04-17 21:44:38,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:44:38,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166621132] [2020-04-17 21:44:38,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:44:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:44:39,051 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 21:44:39,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166621132] [2020-04-17 21:44:39,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:44:39,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:44:39,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225914811] [2020-04-17 21:44:39,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:44:39,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:44:39,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:44:39,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:44:39,053 INFO L87 Difference]: Start difference. First operand 82 states and 174 transitions. Second operand 4 states. [2020-04-17 21:44:39,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:44:39,069 INFO L93 Difference]: Finished difference Result 74 states and 154 transitions. [2020-04-17 21:44:39,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:44:39,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 21:44:39,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:44:39,070 INFO L225 Difference]: With dead ends: 74 [2020-04-17 21:44:39,071 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:44:39,071 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 21:44:39,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:44:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:44:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:44:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:44:39,073 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-17 21:44:39,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:44:39,073 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:44:39,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:44:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:44:39,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:44:39,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:44:39 BasicIcfg [2020-04-17 21:44:39,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:44:39,079 INFO L168 Benchmark]: Toolchain (without parser) took 4525.32 ms. Allocated memory was 145.2 MB in the beginning and 246.9 MB in the end (delta: 101.7 MB). Free memory was 101.7 MB in the beginning and 206.4 MB in the end (delta: -104.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 21:44:39,080 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-17 21:44:39,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.66 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 99.9 MB in the beginning and 157.9 MB in the end (delta: -57.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-17 21:44:39,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.30 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 155.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-17 21:44:39,082 INFO L168 Benchmark]: Boogie Preprocessor took 25.96 ms. Allocated memory is still 202.9 MB. Free memory was 155.2 MB in the beginning and 153.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 21:44:39,083 INFO L168 Benchmark]: RCFGBuilder took 486.87 ms. Allocated memory is still 202.9 MB. Free memory was 153.8 MB in the beginning and 131.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-17 21:44:39,084 INFO L168 Benchmark]: TraceAbstraction took 3219.04 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 131.0 MB in the beginning and 206.4 MB in the end (delta: -75.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 21:44:39,088 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.66 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 99.9 MB in the beginning and 157.9 MB in the end (delta: -57.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.30 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 155.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.96 ms. Allocated memory is still 202.9 MB. Free memory was 155.2 MB in the beginning and 153.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.87 ms. Allocated memory is still 202.9 MB. Free memory was 153.8 MB in the beginning and 131.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3219.04 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 131.0 MB in the beginning and 206.4 MB in the end (delta: -75.4 MB). There was no memory consumed. 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, 667 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 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: 3.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 83 SDtfs, 73 SDslu, 67 SDs, 0 SdLazy, 27 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1362 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...