/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 22:18:39,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 22:18:39,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 22:18:39,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 22:18:39,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 22:18:39,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 22:18:39,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 22:18:39,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 22:18:39,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 22:18:39,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 22:18:39,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 22:18:39,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 22:18:39,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 22:18:39,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 22:18:39,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 22:18:39,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 22:18:39,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 22:18:39,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 22:18:39,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 22:18:39,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 22:18:39,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 22:18:39,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 22:18:39,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 22:18:39,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 22:18:39,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 22:18:39,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 22:18:39,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 22:18:39,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 22:18:39,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 22:18:39,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 22:18:39,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 22:18:39,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 22:18:39,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 22:18:39,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 22:18:39,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 22:18:39,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 22:18:39,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 22:18:39,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 22:18:39,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 22:18:39,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 22:18:39,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 22:18:39,243 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-VariableLbe.epf [2019-12-18 22:18:39,259 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 22:18:39,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 22:18:39,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 22:18:39,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 22:18:39,263 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 22:18:39,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 22:18:39,263 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 22:18:39,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 22:18:39,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 22:18:39,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 22:18:39,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 22:18:39,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 22:18:39,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 22:18:39,266 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 22:18:39,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 22:18:39,266 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 22:18:39,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 22:18:39,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 22:18:39,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 22:18:39,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 22:18:39,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 22:18:39,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 22:18:39,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 22:18:39,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 22:18:39,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 22:18:39,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 22:18:39,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 22:18:39,269 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 22:18:39,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 22:18:39,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 22:18:39,568 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 22:18:39,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 22:18:39,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 22:18:39,586 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 22:18:39,587 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 22:18:39,587 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2019-12-18 22:18:39,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba20b7b78/534a47309ec04c51b79308fd6487f6dc/FLAG9339dd4e3 [2019-12-18 22:18:40,267 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 22:18:40,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2019-12-18 22:18:40,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba20b7b78/534a47309ec04c51b79308fd6487f6dc/FLAG9339dd4e3 [2019-12-18 22:18:40,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba20b7b78/534a47309ec04c51b79308fd6487f6dc [2019-12-18 22:18:40,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 22:18:40,570 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 22:18:40,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 22:18:40,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 22:18:40,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 22:18:40,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:18:40" (1/1) ... [2019-12-18 22:18:40,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76cb1258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:40, skipping insertion in model container [2019-12-18 22:18:40,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:18:40" (1/1) ... [2019-12-18 22:18:40,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 22:18:40,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 22:18:41,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:18:41,111 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 22:18:41,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:18:41,254 INFO L208 MainTranslator]: Completed translation [2019-12-18 22:18:41,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:41 WrapperNode [2019-12-18 22:18:41,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 22:18:41,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 22:18:41,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 22:18:41,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 22:18:41,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:41" (1/1) ... [2019-12-18 22:18:41,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:41" (1/1) ... [2019-12-18 22:18:41,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 22:18:41,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 22:18:41,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 22:18:41,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 22:18:41,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:41" (1/1) ... [2019-12-18 22:18:41,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:41" (1/1) ... [2019-12-18 22:18:41,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:41" (1/1) ... [2019-12-18 22:18:41,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:41" (1/1) ... [2019-12-18 22:18:41,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:41" (1/1) ... [2019-12-18 22:18:41,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:41" (1/1) ... [2019-12-18 22:18:41,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:41" (1/1) ... [2019-12-18 22:18:41,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 22:18:41,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 22:18:41,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 22:18:41,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 22:18:41,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:41" (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 [2019-12-18 22:18:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 22:18:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 22:18:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 22:18:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 22:18:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 22:18:41,406 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 22:18:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 22:18:41,406 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 22:18:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 22:18:41,406 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 22:18:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 22:18:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 22:18:41,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 22:18:41,409 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 22:18:41,761 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 22:18:41,762 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 22:18:41,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:18:41 BoogieIcfgContainer [2019-12-18 22:18:41,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 22:18:41,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 22:18:41,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 22:18:41,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 22:18:41,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:18:40" (1/3) ... [2019-12-18 22:18:41,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7744e7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:18:41, skipping insertion in model container [2019-12-18 22:18:41,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:41" (2/3) ... [2019-12-18 22:18:41,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7744e7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:18:41, skipping insertion in model container [2019-12-18 22:18:41,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:18:41" (3/3) ... [2019-12-18 22:18:41,772 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2019-12-18 22:18:41,783 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 22:18:41,783 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 22:18:41,791 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 22:18:41,792 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 22:18:41,823 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,823 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,823 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,826 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,827 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,827 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,827 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,827 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,828 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,829 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,829 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,829 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,830 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,830 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,830 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,830 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,831 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,831 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,835 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,835 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,835 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,836 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,842 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,842 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,843 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,843 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,846 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,846 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,847 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,847 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:18:41,865 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 22:18:41,883 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 22:18:41,883 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 22:18:41,883 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 22:18:41,883 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 22:18:41,883 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 22:18:41,883 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 22:18:41,884 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 22:18:41,884 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 22:18:41,897 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-18 22:18:41,899 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:18:41,950 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:18:41,950 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:18:41,965 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:18:41,968 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:18:41,989 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:18:41,989 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:18:41,990 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:18:41,992 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 22:18:41,993 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 22:18:43,364 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-12-18 22:18:43,444 INFO L206 etLargeBlockEncoding]: Checked pairs total: 478 [2019-12-18 22:18:43,445 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-18 22:18:43,449 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-18 22:18:43,457 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-18 22:18:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-18 22:18:43,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 22:18:43,466 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:18:43,467 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:18:43,467 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:18:43,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:18:43,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1804038140, now seen corresponding path program 1 times [2019-12-18 22:18:43,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:18:43,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925815339] [2019-12-18 22:18:43,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:18:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:18:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:18:43,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925815339] [2019-12-18 22:18:43,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:18:43,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:18:43,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623188029] [2019-12-18 22:18:43,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:18:43,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:18:43,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:18:43,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:18:43,743 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2019-12-18 22:18:43,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:18:43,772 INFO L93 Difference]: Finished difference Result 50 states and 104 transitions. [2019-12-18 22:18:43,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:18:43,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 22:18:43,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:18:43,788 INFO L225 Difference]: With dead ends: 50 [2019-12-18 22:18:43,789 INFO L226 Difference]: Without dead ends: 34 [2019-12-18 22:18:43,791 INFO L631 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 [2019-12-18 22:18:43,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-18 22:18:43,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-18 22:18:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-18 22:18:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-18 22:18:43,840 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-18 22:18:43,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:18:43,841 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-18 22:18:43,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:18:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-18 22:18:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 22:18:43,842 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:18:43,843 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:18:43,843 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:18:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:18:43,843 INFO L82 PathProgramCache]: Analyzing trace with hash 90665039, now seen corresponding path program 1 times [2019-12-18 22:18:43,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:18:43,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718993926] [2019-12-18 22:18:43,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:18:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:18:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:18:43,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718993926] [2019-12-18 22:18:43,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:18:43,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:18:43,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302990308] [2019-12-18 22:18:43,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:18:43,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:18:43,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:18:43,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:18:43,986 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-18 22:18:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:18:44,013 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2019-12-18 22:18:44,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:18:44,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 22:18:44,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:18:44,014 INFO L225 Difference]: With dead ends: 36 [2019-12-18 22:18:44,014 INFO L226 Difference]: Without dead ends: 28 [2019-12-18 22:18:44,015 INFO L631 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 [2019-12-18 22:18:44,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-18 22:18:44,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-18 22:18:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-18 22:18:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2019-12-18 22:18:44,021 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 9 [2019-12-18 22:18:44,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:18:44,021 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2019-12-18 22:18:44,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:18:44,021 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2019-12-18 22:18:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:18:44,022 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:18:44,022 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:18:44,023 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:18:44,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:18:44,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1542654109, now seen corresponding path program 1 times [2019-12-18 22:18:44,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:18:44,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762053409] [2019-12-18 22:18:44,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:18:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:18:44,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:18:44,117 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762053409] [2019-12-18 22:18:44,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:18:44,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:18:44,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892149849] [2019-12-18 22:18:44,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:18:44,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:18:44,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:18:44,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:18:44,121 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand 3 states. [2019-12-18 22:18:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:18:44,130 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2019-12-18 22:18:44,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:18:44,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 22:18:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:18:44,132 INFO L225 Difference]: With dead ends: 27 [2019-12-18 22:18:44,132 INFO L226 Difference]: Without dead ends: 27 [2019-12-18 22:18:44,132 INFO L631 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 [2019-12-18 22:18:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-18 22:18:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-12-18 22:18:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-18 22:18:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 45 transitions. [2019-12-18 22:18:44,139 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 45 transitions. Word has length 10 [2019-12-18 22:18:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:18:44,140 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 45 transitions. [2019-12-18 22:18:44,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:18:44,140 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 45 transitions. [2019-12-18 22:18:44,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:18:44,141 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:18:44,141 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:18:44,142 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:18:44,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:18:44,142 INFO L82 PathProgramCache]: Analyzing trace with hash -525836137, now seen corresponding path program 1 times [2019-12-18 22:18:44,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:18:44,143 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039218804] [2019-12-18 22:18:44,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:18:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:18:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:18:44,228 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039218804] [2019-12-18 22:18:44,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:18:44,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:18:44,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547305354] [2019-12-18 22:18:44,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:18:44,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:18:44,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:18:44,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:18:44,230 INFO L87 Difference]: Start difference. First operand 27 states and 45 transitions. Second operand 4 states. [2019-12-18 22:18:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:18:44,272 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2019-12-18 22:18:44,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:18:44,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:18:44,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:18:44,274 INFO L225 Difference]: With dead ends: 33 [2019-12-18 22:18:44,274 INFO L226 Difference]: Without dead ends: 21 [2019-12-18 22:18:44,274 INFO L631 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 [2019-12-18 22:18:44,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-18 22:18:44,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-18 22:18:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-18 22:18:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2019-12-18 22:18:44,281 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 11 [2019-12-18 22:18:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:18:44,281 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-12-18 22:18:44,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:18:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2019-12-18 22:18:44,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:18:44,282 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:18:44,282 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:18:44,283 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:18:44,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:18:44,283 INFO L82 PathProgramCache]: Analyzing trace with hash -577609367, now seen corresponding path program 2 times [2019-12-18 22:18:44,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:18:44,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685365436] [2019-12-18 22:18:44,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:18:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:18:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:18:44,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685365436] [2019-12-18 22:18:44,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:18:44,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:18:44,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896063985] [2019-12-18 22:18:44,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:18:44,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:18:44,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:18:44,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:18:44,357 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. Second operand 4 states. [2019-12-18 22:18:44,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:18:44,382 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2019-12-18 22:18:44,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 22:18:44,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:18:44,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:18:44,383 INFO L225 Difference]: With dead ends: 23 [2019-12-18 22:18:44,383 INFO L226 Difference]: Without dead ends: 17 [2019-12-18 22:18:44,383 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 22:18:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-18 22:18:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-18 22:18:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-18 22:18:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-18 22:18:44,386 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2019-12-18 22:18:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:18:44,387 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-18 22:18:44,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:18:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-18 22:18:44,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:18:44,387 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:18:44,388 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:18:44,388 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:18:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:18:44,388 INFO L82 PathProgramCache]: Analyzing trace with hash -577580537, now seen corresponding path program 3 times [2019-12-18 22:18:44,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:18:44,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828340183] [2019-12-18 22:18:44,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:18:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:18:44,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 22:18:44,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828340183] [2019-12-18 22:18:44,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:18:44,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:18:44,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971319437] [2019-12-18 22:18:44,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:18:44,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:18:44,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:18:44,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:18:44,428 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-12-18 22:18:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:18:44,440 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-18 22:18:44,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:18:44,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:18:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:18:44,441 INFO L225 Difference]: With dead ends: 16 [2019-12-18 22:18:44,441 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 22:18:44,441 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 22:18:44,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 22:18:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 22:18:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 22:18:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 22:18:44,442 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 22:18:44,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:18:44,442 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 22:18:44,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:18:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 22:18:44,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 22:18:44,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:18:44 BasicIcfg [2019-12-18 22:18:44,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 22:18:44,448 INFO L168 Benchmark]: Toolchain (without parser) took 3878.96 ms. Allocated memory was 137.4 MB in the beginning and 248.0 MB in the end (delta: 110.6 MB). Free memory was 100.4 MB in the beginning and 157.0 MB in the end (delta: -56.7 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. [2019-12-18 22:18:44,449 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-12-18 22:18:44,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.88 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 99.9 MB in the beginning and 159.4 MB in the end (delta: -59.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2019-12-18 22:18:44,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.02 ms. Allocated memory is still 202.4 MB. Free memory was 159.4 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 22:18:44,452 INFO L168 Benchmark]: Boogie Preprocessor took 28.13 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 22:18:44,453 INFO L168 Benchmark]: RCFGBuilder took 429.12 ms. Allocated memory is still 202.4 MB. Free memory was 156.1 MB in the beginning and 135.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-12-18 22:18:44,454 INFO L168 Benchmark]: TraceAbstraction took 2681.75 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 134.9 MB in the beginning and 157.0 MB in the end (delta: -22.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2019-12-18 22:18:44,459 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 680.88 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 99.9 MB in the beginning and 159.4 MB in the end (delta: -59.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.02 ms. Allocated memory is still 202.4 MB. Free memory was 159.4 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.13 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 429.12 ms. Allocated memory is still 202.4 MB. Free memory was 156.1 MB in the beginning and 135.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2681.75 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 134.9 MB in the beginning and 157.0 MB in the end (delta: -22.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 63 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 232 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 478 CheckedPairsTotal, 47 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 29 SDslu, 57 SDs, 0 SdLazy, 36 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1322 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...