/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/safe010_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:16:04,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:16:04,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:16:04,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:16:04,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:16:04,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:16:04,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:16:04,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:16:04,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:16:04,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:16:04,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:16:04,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:16:04,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:16:04,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:16:04,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:16:04,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:16:04,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:16:04,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:16:04,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:16:04,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:16:04,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:16:04,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:16:04,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:16:04,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:16:04,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:16:04,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:16:04,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:16:04,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:16:04,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:16:04,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:16:04,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:16:04,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:16:04,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:16:04,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:16:04,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:16:04,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:16:04,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:16:04,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:16:04,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:16:04,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:16:04,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:16:04,589 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 [2020-04-18 02:16:04,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:16:04,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:16:04,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:16:04,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:16:04,620 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:16:04,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:16:04,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:16:04,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:16:04,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:16:04,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:16:04,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:16:04,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:16:04,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:16:04,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:16:04,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:16:04,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:16:04,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:16:04,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:16:04,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:16:04,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:16:04,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:16:04,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:16:04,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:16:04,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:16:04,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:16:04,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:16:04,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:16:04,626 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:16:04,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:16:04,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:16:04,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:16:04,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:16:04,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:16:04,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:16:04,979 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:16:04,980 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-04-18 02:16:05,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28dba3244/1449bf8d84bb469a96b84847bb334a73/FLAG457ca6ac2 [2020-04-18 02:16:05,616 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:16:05,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-04-18 02:16:05,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28dba3244/1449bf8d84bb469a96b84847bb334a73/FLAG457ca6ac2 [2020-04-18 02:16:05,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28dba3244/1449bf8d84bb469a96b84847bb334a73 [2020-04-18 02:16:05,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:16:05,917 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:16:05,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:16:05,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:16:05,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:16:05,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:16:05" (1/1) ... [2020-04-18 02:16:05,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710ba30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:05, skipping insertion in model container [2020-04-18 02:16:05,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:16:05" (1/1) ... [2020-04-18 02:16:05,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:16:05,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:16:06,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:16:06,513 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:16:06,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:16:06,642 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:16:06,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:06 WrapperNode [2020-04-18 02:16:06,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:16:06,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:16:06,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:16:06,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:16:06,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:06" (1/1) ... [2020-04-18 02:16:06,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:06" (1/1) ... [2020-04-18 02:16:06,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:16:06,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:16:06,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:16:06,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:16:06,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:06" (1/1) ... [2020-04-18 02:16:06,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:06" (1/1) ... [2020-04-18 02:16:06,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:06" (1/1) ... [2020-04-18 02:16:06,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:06" (1/1) ... [2020-04-18 02:16:06,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:06" (1/1) ... [2020-04-18 02:16:06,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:06" (1/1) ... [2020-04-18 02:16:06,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:06" (1/1) ... [2020-04-18 02:16:06,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:16:06,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:16:06,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:16:06,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:16:06,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:16:06,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:16:06,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:16:06,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:16:06,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:16:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:16:06,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:16:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:16:06,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:16:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:16:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:16:06,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:16:06,799 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:16:07,151 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:16:07,151 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:16:07,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:16:07 BoogieIcfgContainer [2020-04-18 02:16:07,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:16:07,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:16:07,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:16:07,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:16:07,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:16:05" (1/3) ... [2020-04-18 02:16:07,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2460332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:16:07, skipping insertion in model container [2020-04-18 02:16:07,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:16:06" (2/3) ... [2020-04-18 02:16:07,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2460332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:16:07, skipping insertion in model container [2020-04-18 02:16:07,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:16:07" (3/3) ... [2020-04-18 02:16:07,165 INFO L109 eAbstractionObserver]: Analyzing ICFG safe010_tso.oepc.i [2020-04-18 02:16:07,174 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:16:07,174 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:16:07,181 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:16:07,182 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:16:07,207 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,208 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,208 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,209 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,209 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,209 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,210 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,210 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,211 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,211 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,211 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,211 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,215 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,216 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,216 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,217 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,222 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,223 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,223 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,223 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:16:07,237 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 02:16:07,256 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:16:07,257 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:16:07,257 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:16:07,257 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:16:07,257 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:16:07,258 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:16:07,258 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:16:07,258 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:16:07,274 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-04-18 02:16:07,276 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 02:16:07,317 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 02:16:07,318 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:16:07,322 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 02:16:07,325 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 02:16:07,354 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 02:16:07,355 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:16:07,355 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 02:16:07,357 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 02:16:07,358 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:16:08,692 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1251 [2020-04-18 02:16:08,692 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-04-18 02:16:08,697 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 02:16:08,710 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 02:16:08,713 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 02:16:08,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 02:16:08,720 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:16:08,722 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 02:16:08,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:16:08,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:16:08,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584925, now seen corresponding path program 1 times [2020-04-18 02:16:08,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:16:08,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909197412] [2020-04-18 02:16:08,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:16:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:16:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:16:08,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909197412] [2020-04-18 02:16:08,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:16:08,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:16:08,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261058928] [2020-04-18 02:16:08,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:16:08,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:16:08,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:16:08,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:16:08,970 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 02:16:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:16:09,024 INFO L93 Difference]: Finished difference Result 70 states and 149 transitions. [2020-04-18 02:16:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:16:09,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 02:16:09,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:16:09,038 INFO L225 Difference]: With dead ends: 70 [2020-04-18 02:16:09,038 INFO L226 Difference]: Without dead ends: 54 [2020-04-18 02:16:09,039 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:16:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-18 02:16:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-18 02:16:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-18 02:16:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2020-04-18 02:16:09,084 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2020-04-18 02:16:09,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:16:09,084 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2020-04-18 02:16:09,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:16:09,085 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2020-04-18 02:16:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 02:16:09,085 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:16:09,085 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:16:09,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:16:09,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:16:09,086 INFO L82 PathProgramCache]: Analyzing trace with hash 417538412, now seen corresponding path program 1 times [2020-04-18 02:16:09,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:16:09,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95531924] [2020-04-18 02:16:09,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:16:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:16:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:16:09,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95531924] [2020-04-18 02:16:09,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:16:09,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:16:09,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813140825] [2020-04-18 02:16:09,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:16:09,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:16:09,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:16:09,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:16:09,166 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand 3 states. [2020-04-18 02:16:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:16:09,178 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2020-04-18 02:16:09,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:16:09,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-18 02:16:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:16:09,181 INFO L225 Difference]: With dead ends: 53 [2020-04-18 02:16:09,181 INFO L226 Difference]: Without dead ends: 53 [2020-04-18 02:16:09,182 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:16:09,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-04-18 02:16:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-04-18 02:16:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-04-18 02:16:09,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 106 transitions. [2020-04-18 02:16:09,191 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 106 transitions. Word has length 7 [2020-04-18 02:16:09,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:16:09,192 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 106 transitions. [2020-04-18 02:16:09,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:16:09,192 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 106 transitions. [2020-04-18 02:16:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:16:09,193 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:16:09,193 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:16:09,193 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:16:09,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:16:09,194 INFO L82 PathProgramCache]: Analyzing trace with hash 58787852, now seen corresponding path program 1 times [2020-04-18 02:16:09,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:16:09,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615889806] [2020-04-18 02:16:09,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:16:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:16:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:16:09,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615889806] [2020-04-18 02:16:09,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:16:09,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:16:09,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520774047] [2020-04-18 02:16:09,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:16:09,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:16:09,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:16:09,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:16:09,287 INFO L87 Difference]: Start difference. First operand 53 states and 106 transitions. Second operand 4 states. [2020-04-18 02:16:09,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:16:09,315 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-04-18 02:16:09,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:16:09,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-04-18 02:16:09,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:16:09,317 INFO L225 Difference]: With dead ends: 60 [2020-04-18 02:16:09,318 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 02:16:09,318 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:16:09,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 02:16:09,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 02:16:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 02:16:09,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-04-18 02:16:09,323 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 8 [2020-04-18 02:16:09,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:16:09,324 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-04-18 02:16:09,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:16:09,324 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-04-18 02:16:09,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:16:09,325 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:16:09,325 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:16:09,325 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:16:09,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:16:09,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1840071362, now seen corresponding path program 1 times [2020-04-18 02:16:09,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:16:09,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015543891] [2020-04-18 02:16:09,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:16:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:16:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:16:09,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015543891] [2020-04-18 02:16:09,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:16:09,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:16:09,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466275569] [2020-04-18 02:16:09,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:16:09,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:16:09,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:16:09,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:16:09,455 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 4 states. [2020-04-18 02:16:09,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:16:09,487 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 02:16:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:16:09,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:16:09,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:16:09,489 INFO L225 Difference]: With dead ends: 39 [2020-04-18 02:16:09,489 INFO L226 Difference]: Without dead ends: 29 [2020-04-18 02:16:09,489 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:16:09,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-18 02:16:09,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-18 02:16:09,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-18 02:16:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-04-18 02:16:09,494 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-04-18 02:16:09,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:16:09,494 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-04-18 02:16:09,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:16:09,495 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-04-18 02:16:09,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:16:09,495 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:16:09,495 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:16:09,496 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:16:09,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:16:09,496 INFO L82 PathProgramCache]: Analyzing trace with hash 419248155, now seen corresponding path program 1 times [2020-04-18 02:16:09,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:16:09,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505181119] [2020-04-18 02:16:09,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:16:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:16:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:16:09,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505181119] [2020-04-18 02:16:09,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:16:09,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:16:09,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869310177] [2020-04-18 02:16:09,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:16:09,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:16:09,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:16:09,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:16:09,593 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 5 states. [2020-04-18 02:16:09,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:16:09,635 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-04-18 02:16:09,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:16:09,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 02:16:09,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:16:09,636 INFO L225 Difference]: With dead ends: 27 [2020-04-18 02:16:09,636 INFO L226 Difference]: Without dead ends: 22 [2020-04-18 02:16:09,637 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:16:09,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-04-18 02:16:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-04-18 02:16:09,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-04-18 02:16:09,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-04-18 02:16:09,641 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-04-18 02:16:09,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:16:09,644 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-04-18 02:16:09,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:16:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-18 02:16:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:16:09,645 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:16:09,646 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:16:09,646 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:16:09,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:16:09,647 INFO L82 PathProgramCache]: Analyzing trace with hash -830614075, now seen corresponding path program 1 times [2020-04-18 02:16:09,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:16:09,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359090336] [2020-04-18 02:16:09,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:16:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:16:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:16:09,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359090336] [2020-04-18 02:16:09,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:16:09,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:16:09,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090997773] [2020-04-18 02:16:09,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:16:09,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:16:09,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:16:09,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:16:09,698 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 3 states. [2020-04-18 02:16:09,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:16:09,703 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-04-18 02:16:09,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:16:09,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 02:16:09,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:16:09,704 INFO L225 Difference]: With dead ends: 21 [2020-04-18 02:16:09,704 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:16:09,704 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:16:09,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:16:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:16:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:16:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:16:09,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 02:16:09,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:16:09,705 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:16:09,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:16:09,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:16:09,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:16:09,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:16:09 BasicIcfg [2020-04-18 02:16:09,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:16:09,712 INFO L168 Benchmark]: Toolchain (without parser) took 3809.28 ms. Allocated memory was 146.3 MB in the beginning and 246.4 MB in the end (delta: 100.1 MB). Free memory was 102.3 MB in the beginning and 161.7 MB in the end (delta: -59.4 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:16:09,713 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 02:16:09,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.45 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.3 MB in the beginning and 160.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:16:09,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.14 ms. Allocated memory is still 203.4 MB. Free memory was 160.0 MB in the beginning and 158.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:16:09,716 INFO L168 Benchmark]: Boogie Preprocessor took 31.86 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 156.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:16:09,716 INFO L168 Benchmark]: RCFGBuilder took 430.44 ms. Allocated memory is still 203.4 MB. Free memory was 156.7 MB in the beginning and 137.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:16:09,717 INFO L168 Benchmark]: TraceAbstraction took 2551.82 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 136.4 MB in the beginning and 161.7 MB in the end (delta: -25.4 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:16:09,722 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.45 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.3 MB in the beginning and 160.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.14 ms. Allocated memory is still 203.4 MB. Free memory was 160.0 MB in the beginning and 158.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.86 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 156.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.44 ms. Allocated memory is still 203.4 MB. Free memory was 156.7 MB in the beginning and 137.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2551.82 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 136.4 MB in the beginning and 161.7 MB in the end (delta: -25.4 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 12 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 371 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1251 CheckedPairsTotal, 49 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 71 SDtfs, 42 SDslu, 61 SDs, 0 SdLazy, 47 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1116 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...