/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 00:01:08,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 00:01:08,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 00:01:08,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 00:01:08,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 00:01:08,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 00:01:08,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 00:01:08,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 00:01:08,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 00:01:08,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 00:01:08,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 00:01:08,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 00:01:08,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 00:01:08,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 00:01:08,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 00:01:08,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 00:01:08,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 00:01:08,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 00:01:08,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 00:01:08,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 00:01:08,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 00:01:08,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 00:01:08,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 00:01:08,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 00:01:08,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-06 00:01:08,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-06 00:01:08,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-06 00:01:08,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-06 00:01:08,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-06 00:01:08,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-06 00:01:08,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 00:01:08,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 00:01:08,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 00:01:08,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 00:01:08,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 00:01:08,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 00:01:08,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 00:01:08,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 00:01:08,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 00:01:08,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 00:01:08,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 00:01:08,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 00:01:08,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 00:01:08,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 00:01:08,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 00:01:08,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 00:01:08,324 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 00:01:08,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 00:01:08,324 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 00:01:08,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 00:01:08,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 00:01:08,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 00:01:08,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 00:01:08,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 00:01:08,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 00:01:08,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 00:01:08,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 00:01:08,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 00:01:08,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 00:01:08,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 00:01:08,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 00:01:08,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 00:01:08,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 00:01:08,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 00:01:08,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 00:01:08,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 00:01:08,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 00:01:08,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 00:01:08,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 00:01:08,328 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 00:01:08,329 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 00:01:08,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 00:01:08,329 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 00:01:08,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 00:01:08,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 00:01:08,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 00:01:08,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 00:01:08,659 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 00:01:08,661 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2020-10-06 00:01:08,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e431e4a7/14daa98bf97b4d10a22054fa6c81f7a7/FLAG4cc56db1d [2020-10-06 00:01:09,303 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 00:01:09,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2020-10-06 00:01:09,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e431e4a7/14daa98bf97b4d10a22054fa6c81f7a7/FLAG4cc56db1d [2020-10-06 00:01:09,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e431e4a7/14daa98bf97b4d10a22054fa6c81f7a7 [2020-10-06 00:01:09,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 00:01:09,575 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 00:01:09,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 00:01:09,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 00:01:09,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 00:01:09,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:01:09" (1/1) ... [2020-10-06 00:01:09,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e91772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:09, skipping insertion in model container [2020-10-06 00:01:09,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:01:09" (1/1) ... [2020-10-06 00:01:09,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 00:01:09,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 00:01:10,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:01:10,125 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 00:01:10,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:01:10,242 INFO L208 MainTranslator]: Completed translation [2020-10-06 00:01:10,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:10 WrapperNode [2020-10-06 00:01:10,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 00:01:10,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 00:01:10,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 00:01:10,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 00:01:10,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:10" (1/1) ... [2020-10-06 00:01:10,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:10" (1/1) ... [2020-10-06 00:01:10,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 00:01:10,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 00:01:10,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 00:01:10,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 00:01:10,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:10" (1/1) ... [2020-10-06 00:01:10,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:10" (1/1) ... [2020-10-06 00:01:10,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:10" (1/1) ... [2020-10-06 00:01:10,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:10" (1/1) ... [2020-10-06 00:01:10,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:10" (1/1) ... [2020-10-06 00:01:10,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:10" (1/1) ... [2020-10-06 00:01:10,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:10" (1/1) ... [2020-10-06 00:01:10,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 00:01:10,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 00:01:10,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 00:01:10,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 00:01:10,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 00:01:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-06 00:01:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-06 00:01:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-06 00:01:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-06 00:01:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-06 00:01:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 00:01:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 00:01:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 00:01:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 00:01:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 00:01:10,402 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 00:01:10,754 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 00:01:10,754 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-06 00:01:10,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:01:10 BoogieIcfgContainer [2020-10-06 00:01:10,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 00:01:10,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 00:01:10,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 00:01:10,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 00:01:10,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 12:01:09" (1/3) ... [2020-10-06 00:01:10,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f675bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:01:10, skipping insertion in model container [2020-10-06 00:01:10,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:10" (2/3) ... [2020-10-06 00:01:10,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f675bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:01:10, skipping insertion in model container [2020-10-06 00:01:10,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:01:10" (3/3) ... [2020-10-06 00:01:10,766 INFO L109 eAbstractionObserver]: Analyzing ICFG dekker.i [2020-10-06 00:01:10,778 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 00:01:10,778 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 00:01:10,786 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-06 00:01:10,788 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 00:01:10,850 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,850 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,850 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,855 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,855 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,856 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,856 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,863 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,863 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,870 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,870 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,871 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,871 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:10,899 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-06 00:01:10,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:01:10,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:01:10,921 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:01:10,921 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:01:10,921 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:01:10,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:01:10,921 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:01:10,922 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:01:10,940 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 82 transitions, 186 flow [2020-10-06 00:01:10,942 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 82 transitions, 186 flow [2020-10-06 00:01:11,005 INFO L129 PetriNetUnfolder]: 14/82 cut-off events. [2020-10-06 00:01:11,005 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-06 00:01:11,012 INFO L80 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 82 events. 14/82 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2020-10-06 00:01:11,016 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 82 transitions, 186 flow [2020-10-06 00:01:11,041 INFO L129 PetriNetUnfolder]: 14/82 cut-off events. [2020-10-06 00:01:11,041 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-06 00:01:11,042 INFO L80 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 82 events. 14/82 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2020-10-06 00:01:11,045 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1428 [2020-10-06 00:01:11,046 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:01:11,902 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-06 00:01:12,102 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-06 00:01:12,178 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4274 [2020-10-06 00:01:12,179 INFO L214 etLargeBlockEncoding]: Total number of compositions: 40 [2020-10-06 00:01:12,183 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 47 transitions, 116 flow [2020-10-06 00:01:12,215 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 389 states. [2020-10-06 00:01:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states. [2020-10-06 00:01:12,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-06 00:01:12,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:12,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-06 00:01:12,227 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:12,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:12,234 INFO L82 PathProgramCache]: Analyzing trace with hash 321069377, now seen corresponding path program 1 times [2020-10-06 00:01:12,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:12,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868952767] [2020-10-06 00:01:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:12,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868952767] [2020-10-06 00:01:12,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:01:12,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:01:12,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1995459862] [2020-10-06 00:01:12,471 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:12,476 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:12,490 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-06 00:01:12,490 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:12,495 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:01:12,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-06 00:01:12,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:12,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-06 00:01:12,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 00:01:12,514 INFO L87 Difference]: Start difference. First operand 389 states. Second operand 2 states. [2020-10-06 00:01:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:12,545 INFO L93 Difference]: Finished difference Result 389 states and 1030 transitions. [2020-10-06 00:01:12,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-06 00:01:12,547 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-10-06 00:01:12,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:12,566 INFO L225 Difference]: With dead ends: 389 [2020-10-06 00:01:12,566 INFO L226 Difference]: Without dead ends: 350 [2020-10-06 00:01:12,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 00:01:12,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-06 00:01:12,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2020-10-06 00:01:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-06 00:01:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 945 transitions. [2020-10-06 00:01:12,675 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 945 transitions. Word has length 5 [2020-10-06 00:01:12,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:12,676 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 945 transitions. [2020-10-06 00:01:12,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-06 00:01:12,676 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 945 transitions. [2020-10-06 00:01:12,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-06 00:01:12,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:12,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-06 00:01:12,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 00:01:12,683 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:12,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:12,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1363179009, now seen corresponding path program 1 times [2020-10-06 00:01:12,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:12,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569091050] [2020-10-06 00:01:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:12,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569091050] [2020-10-06 00:01:12,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:01:12,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:01:12,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1840471515] [2020-10-06 00:01:12,767 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:12,767 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:12,768 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-06 00:01:12,768 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:12,769 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:01:12,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:01:12,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:12,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:01:12,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:01:12,771 INFO L87 Difference]: Start difference. First operand 350 states and 945 transitions. Second operand 3 states. [2020-10-06 00:01:12,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:12,810 INFO L93 Difference]: Finished difference Result 365 states and 947 transitions. [2020-10-06 00:01:12,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:01:12,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-06 00:01:12,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:12,814 INFO L225 Difference]: With dead ends: 365 [2020-10-06 00:01:12,814 INFO L226 Difference]: Without dead ends: 293 [2020-10-06 00:01:12,815 INFO L675 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 [2020-10-06 00:01:12,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-06 00:01:12,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 275. [2020-10-06 00:01:12,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-06 00:01:12,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 734 transitions. [2020-10-06 00:01:12,837 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 734 transitions. Word has length 6 [2020-10-06 00:01:12,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:12,837 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 734 transitions. [2020-10-06 00:01:12,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:01:12,838 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 734 transitions. [2020-10-06 00:01:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 00:01:12,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:12,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:12,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 00:01:12,839 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:12,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:12,840 INFO L82 PathProgramCache]: Analyzing trace with hash 128013856, now seen corresponding path program 1 times [2020-10-06 00:01:12,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:12,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557122701] [2020-10-06 00:01:12,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:12,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557122701] [2020-10-06 00:01:12,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:01:12,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:01:12,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1696617136] [2020-10-06 00:01:12,910 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:12,910 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:12,911 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 00:01:12,911 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:12,911 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:01:12,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:01:12,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:12,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:01:12,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:01:12,913 INFO L87 Difference]: Start difference. First operand 275 states and 734 transitions. Second operand 3 states. [2020-10-06 00:01:12,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:12,932 INFO L93 Difference]: Finished difference Result 266 states and 691 transitions. [2020-10-06 00:01:12,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:01:12,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 00:01:12,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:12,935 INFO L225 Difference]: With dead ends: 266 [2020-10-06 00:01:12,936 INFO L226 Difference]: Without dead ends: 188 [2020-10-06 00:01:12,936 INFO L675 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 [2020-10-06 00:01:12,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-06 00:01:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-06 00:01:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-06 00:01:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 495 transitions. [2020-10-06 00:01:12,949 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 495 transitions. Word has length 8 [2020-10-06 00:01:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:12,950 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 495 transitions. [2020-10-06 00:01:12,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:01:12,950 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 495 transitions. [2020-10-06 00:01:12,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:01:12,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:12,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:12,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 00:01:12,953 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:12,954 INFO L82 PathProgramCache]: Analyzing trace with hash -53773409, now seen corresponding path program 1 times [2020-10-06 00:01:12,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:12,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245388185] [2020-10-06 00:01:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:12,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245388185] [2020-10-06 00:01:12,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:01:12,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:01:12,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1690608089] [2020-10-06 00:01:12,998 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:12,999 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:13,001 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-06 00:01:13,002 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:13,031 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:01:13,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:01:13,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:13,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:01:13,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:01:13,033 INFO L87 Difference]: Start difference. First operand 188 states and 495 transitions. Second operand 3 states. [2020-10-06 00:01:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:13,048 INFO L93 Difference]: Finished difference Result 188 states and 485 transitions. [2020-10-06 00:01:13,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:01:13,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-06 00:01:13,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:13,050 INFO L225 Difference]: With dead ends: 188 [2020-10-06 00:01:13,051 INFO L226 Difference]: Without dead ends: 160 [2020-10-06 00:01:13,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:01:13,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-06 00:01:13,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-10-06 00:01:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-06 00:01:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 409 transitions. [2020-10-06 00:01:13,059 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 409 transitions. Word has length 11 [2020-10-06 00:01:13,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:13,060 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 409 transitions. [2020-10-06 00:01:13,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:01:13,060 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 409 transitions. [2020-10-06 00:01:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:01:13,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:13,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:13,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 00:01:13,062 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:13,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:13,063 INFO L82 PathProgramCache]: Analyzing trace with hash -214374855, now seen corresponding path program 2 times [2020-10-06 00:01:13,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:13,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413014399] [2020-10-06 00:01:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:13,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413014399] [2020-10-06 00:01:13,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:01:13,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:01:13,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1611504457] [2020-10-06 00:01:13,124 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:13,126 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:13,132 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-10-06 00:01:13,132 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:13,133 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:01:13,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:01:13,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:13,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:01:13,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:01:13,134 INFO L87 Difference]: Start difference. First operand 160 states and 409 transitions. Second operand 3 states. [2020-10-06 00:01:13,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:13,154 INFO L93 Difference]: Finished difference Result 110 states and 320 transitions. [2020-10-06 00:01:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:01:13,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-06 00:01:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:13,156 INFO L225 Difference]: With dead ends: 110 [2020-10-06 00:01:13,156 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 00:01:13,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:01:13,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 00:01:13,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 00:01:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 00:01:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 00:01:13,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-06 00:01:13,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:13,158 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 00:01:13,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:01:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 00:01:13,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 00:01:13,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 00:01:13,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 12:01:13 BasicIcfg [2020-10-06 00:01:13,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 00:01:13,165 INFO L168 Benchmark]: Toolchain (without parser) took 3590.50 ms. Allocated memory was 137.9 MB in the beginning and 253.2 MB in the end (delta: 115.3 MB). Free memory was 99.5 MB in the beginning and 177.5 MB in the end (delta: -78.0 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2020-10-06 00:01:13,166 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-06 00:01:13,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.93 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 161.6 MB in the end (delta: -62.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-10-06 00:01:13,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.11 ms. Allocated memory is still 200.8 MB. Free memory was 161.6 MB in the beginning and 159.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-06 00:01:13,169 INFO L168 Benchmark]: Boogie Preprocessor took 31.96 ms. Allocated memory is still 200.8 MB. Free memory was 158.3 MB in the beginning and 157.3 MB in the end (delta: 988.0 kB). Peak memory consumption was 988.0 kB. Max. memory is 7.1 GB. [2020-10-06 00:01:13,170 INFO L168 Benchmark]: RCFGBuilder took 433.00 ms. Allocated memory is still 200.8 MB. Free memory was 157.3 MB in the beginning and 134.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-06 00:01:13,171 INFO L168 Benchmark]: TraceAbstraction took 2404.68 ms. Allocated memory was 200.8 MB in the beginning and 253.2 MB in the end (delta: 52.4 MB). Free memory was 134.9 MB in the beginning and 177.5 MB in the end (delta: -42.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-06 00:01:13,175 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.93 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 161.6 MB in the end (delta: -62.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.11 ms. Allocated memory is still 200.8 MB. Free memory was 161.6 MB in the beginning and 159.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.96 ms. Allocated memory is still 200.8 MB. Free memory was 158.3 MB in the beginning and 157.3 MB in the end (delta: 988.0 kB). Peak memory consumption was 988.0 kB. Max. memory is 7.1 GB. * RCFGBuilder took 433.00 ms. Allocated memory is still 200.8 MB. Free memory was 157.3 MB in the beginning and 134.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2404.68 ms. Allocated memory was 200.8 MB in the beginning and 253.2 MB in the end (delta: 52.4 MB). Free memory was 134.9 MB in the beginning and 177.5 MB in the end (delta: -42.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 74 ProgramPointsBefore, 42 ProgramPointsAfterwards, 82 TransitionsBefore, 47 TransitionsAfterwards, 1428 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 633 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4274 CheckedPairsTotal, 40 TotalNumberOfCompositions - PositiveResult [Line: 705]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 68 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 210 SDtfs, 86 SDslu, 76 SDs, 0 SdLazy, 24 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred 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, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 494 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...