./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5efd8360950fd3238a6a91e0d0d6ad54c0af588e ........................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 18:34:13,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 18:34:13,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 18:34:13,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 18:34:13,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 18:34:13,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 18:34:13,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 18:34:13,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 18:34:13,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 18:34:13,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 18:34:13,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 18:34:13,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 18:34:13,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 18:34:13,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 18:34:13,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 18:34:13,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 18:34:13,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 18:34:13,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 18:34:13,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 18:34:13,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 18:34:13,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 18:34:13,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 18:34:13,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 18:34:13,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 18:34:13,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 18:34:13,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 18:34:13,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 18:34:13,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 18:34:13,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 18:34:13,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 18:34:13,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 18:34:13,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 18:34:13,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 18:34:13,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 18:34:13,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 18:34:13,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 18:34:13,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 18:34:13,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 18:34:13,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 18:34:13,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 18:34:13,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 18:34:13,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 18:34:13,258 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 18:34:13,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 18:34:13,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 18:34:13,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 18:34:13,261 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 18:34:13,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 18:34:13,261 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 18:34:13,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 18:34:13,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 18:34:13,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 18:34:13,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 18:34:13,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 18:34:13,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 18:34:13,264 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 18:34:13,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 18:34:13,265 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 18:34:13,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 18:34:13,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 18:34:13,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 18:34:13,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 18:34:13,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 18:34:13,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:34:13,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 18:34:13,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 18:34:13,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 18:34:13,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 18:34:13,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 18:34:13,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 18:34:13,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 18:34:13,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5efd8360950fd3238a6a91e0d0d6ad54c0af588e [2019-11-28 18:34:13,567 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 18:34:13,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 18:34:13,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 18:34:13,586 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 18:34:13,587 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 18:34:13,587 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i [2019-11-28 18:34:13,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5ad14a22/e83aacf432404d5e9fa9e8974b24f21b/FLAG1d9e50acd [2019-11-28 18:34:14,198 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 18:34:14,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_tso.oepc.i [2019-11-28 18:34:14,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5ad14a22/e83aacf432404d5e9fa9e8974b24f21b/FLAG1d9e50acd [2019-11-28 18:34:14,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5ad14a22/e83aacf432404d5e9fa9e8974b24f21b [2019-11-28 18:34:14,463 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 18:34:14,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 18:34:14,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 18:34:14,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 18:34:14,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 18:34:14,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:34:14" (1/1) ... [2019-11-28 18:34:14,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec5963e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:14, skipping insertion in model container [2019-11-28 18:34:14,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:34:14" (1/1) ... [2019-11-28 18:34:14,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 18:34:14,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 18:34:15,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:34:15,040 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 18:34:15,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:34:15,192 INFO L208 MainTranslator]: Completed translation [2019-11-28 18:34:15,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:15 WrapperNode [2019-11-28 18:34:15,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 18:34:15,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 18:34:15,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 18:34:15,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 18:34:15,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:15" (1/1) ... [2019-11-28 18:34:15,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:15" (1/1) ... [2019-11-28 18:34:15,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 18:34:15,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 18:34:15,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 18:34:15,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 18:34:15,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:15" (1/1) ... [2019-11-28 18:34:15,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:15" (1/1) ... [2019-11-28 18:34:15,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:15" (1/1) ... [2019-11-28 18:34:15,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:15" (1/1) ... [2019-11-28 18:34:15,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:15" (1/1) ... [2019-11-28 18:34:15,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:15" (1/1) ... [2019-11-28 18:34:15,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:15" (1/1) ... [2019-11-28 18:34:15,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 18:34:15,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 18:34:15,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 18:34:15,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 18:34:15,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:15" (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 [2019-11-28 18:34:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 18:34:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-28 18:34:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 18:34:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 18:34:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-28 18:34:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-28 18:34:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-28 18:34:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-28 18:34:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-28 18:34:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 18:34:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 18:34:15,331 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-28 18:34:15,658 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 18:34:15,658 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 18:34:15,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:34:15 BoogieIcfgContainer [2019-11-28 18:34:15,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 18:34:15,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 18:34:15,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 18:34:15,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 18:34:15,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:34:14" (1/3) ... [2019-11-28 18:34:15,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340b653b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:34:15, skipping insertion in model container [2019-11-28 18:34:15,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:34:15" (2/3) ... [2019-11-28 18:34:15,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340b653b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:34:15, skipping insertion in model container [2019-11-28 18:34:15,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:34:15" (3/3) ... [2019-11-28 18:34:15,669 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_tso.oepc.i [2019-11-28 18:34:15,680 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 18:34:15,680 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 18:34:15,688 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 18:34:15,689 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 18:34:15,715 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:34:15,715 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:34:15,716 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:34:15,716 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:34:15,717 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:34:15,717 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:34:15,717 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:34:15,718 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:34:15,718 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:34:15,718 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:34:15,719 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:34:15,719 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:34:15,740 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-28 18:34:15,762 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 18:34:15,762 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 18:34:15,762 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 18:34:15,762 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 18:34:15,762 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 18:34:15,762 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 18:34:15,763 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 18:34:15,763 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 18:34:15,774 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 43 transitions [2019-11-28 18:34:15,777 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 43 transitions [2019-11-28 18:34:15,813 INFO L134 PetriNetUnfolder]: 1/41 cut-off events. [2019-11-28 18:34:15,813 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:34:15,820 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs. 6/45 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2019-11-28 18:34:15,824 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 43 transitions [2019-11-28 18:34:15,844 INFO L134 PetriNetUnfolder]: 1/41 cut-off events. [2019-11-28 18:34:15,844 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:34:15,845 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs. 6/45 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2019-11-28 18:34:15,847 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 234 [2019-11-28 18:34:15,848 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 18:34:17,146 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2019-11-28 18:34:17,159 INFO L206 etLargeBlockEncoding]: Checked pairs total: 242 [2019-11-28 18:34:17,160 INFO L214 etLargeBlockEncoding]: Total number of compositions: 37 [2019-11-28 18:34:17,164 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 11 transitions [2019-11-28 18:34:17,174 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 22 states. [2019-11-28 18:34:17,176 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-11-28 18:34:17,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 18:34:17,184 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:34:17,185 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 18:34:17,185 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:34:17,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:34:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash 550784875, now seen corresponding path program 1 times [2019-11-28 18:34:17,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:34:17,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609431499] [2019-11-28 18:34:17,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:34:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:34:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:34:17,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609431499] [2019-11-28 18:34:17,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:34:17,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:34:17,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498323476] [2019-11-28 18:34:17,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:34:17,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:34:17,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:34:17,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:34:17,485 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2019-11-28 18:34:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:34:17,543 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2019-11-28 18:34:17,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:34:17,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-28 18:34:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:34:17,558 INFO L225 Difference]: With dead ends: 23 [2019-11-28 18:34:17,558 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 18:34:17,559 INFO L630 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 [2019-11-28 18:34:17,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 18:34:17,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 18:34:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 18:34:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2019-11-28 18:34:17,601 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 6 [2019-11-28 18:34:17,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:34:17,601 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2019-11-28 18:34:17,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:34:17,601 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2019-11-28 18:34:17,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 18:34:17,602 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:34:17,602 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:34:17,602 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:34:17,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:34:17,603 INFO L82 PathProgramCache]: Analyzing trace with hash -105739058, now seen corresponding path program 1 times [2019-11-28 18:34:17,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:34:17,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834500914] [2019-11-28 18:34:17,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:34:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:34:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:34:17,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834500914] [2019-11-28 18:34:17,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:34:17,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:34:17,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847473703] [2019-11-28 18:34:17,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:34:17,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:34:17,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:34:17,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:34:17,748 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 5 states. [2019-11-28 18:34:17,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:34:17,798 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2019-11-28 18:34:17,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:34:17,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 18:34:17,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:34:17,801 INFO L225 Difference]: With dead ends: 15 [2019-11-28 18:34:17,802 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 18:34:17,802 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 18:34:17,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 18:34:17,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 18:34:17,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 18:34:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-28 18:34:17,806 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2019-11-28 18:34:17,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:34:17,806 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-28 18:34:17,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:34:17,807 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-28 18:34:17,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 18:34:17,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:34:17,808 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:34:17,808 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:34:17,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:34:17,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1017118813, now seen corresponding path program 1 times [2019-11-28 18:34:17,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:34:17,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247175893] [2019-11-28 18:34:17,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:34:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:34:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:34:17,929 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247175893] [2019-11-28 18:34:17,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:34:17,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:34:17,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366997913] [2019-11-28 18:34:17,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:34:17,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:34:17,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:34:17,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:34:17,932 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2019-11-28 18:34:17,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:34:17,960 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-11-28 18:34:17,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:34:17,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 18:34:17,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:34:17,961 INFO L225 Difference]: With dead ends: 14 [2019-11-28 18:34:17,962 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 18:34:17,962 INFO L630 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 [2019-11-28 18:34:17,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 18:34:17,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 18:34:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 18:34:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2019-11-28 18:34:17,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2019-11-28 18:34:17,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:34:17,966 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2019-11-28 18:34:17,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:34:17,967 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2019-11-28 18:34:17,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 18:34:17,967 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:34:17,968 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:34:17,968 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:34:17,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:34:17,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1025277703, now seen corresponding path program 2 times [2019-11-28 18:34:17,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:34:17,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574050892] [2019-11-28 18:34:17,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:34:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:34:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:34:18,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574050892] [2019-11-28 18:34:18,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:34:18,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:34:18,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926161250] [2019-11-28 18:34:18,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:34:18,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:34:18,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:34:18,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:34:18,051 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 4 states. [2019-11-28 18:34:18,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:34:18,064 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-11-28 18:34:18,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:34:18,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 18:34:18,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:34:18,065 INFO L225 Difference]: With dead ends: 8 [2019-11-28 18:34:18,065 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 18:34:18,065 INFO L630 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 [2019-11-28 18:34:18,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 18:34:18,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 18:34:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 18:34:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 18:34:18,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-28 18:34:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:34:18,067 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 18:34:18,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:34:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 18:34:18,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 18:34:18,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:34:18 BasicIcfg [2019-11-28 18:34:18,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 18:34:18,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 18:34:18,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 18:34:18,073 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 18:34:18,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:34:15" (3/4) ... [2019-11-28 18:34:18,078 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 18:34:18,086 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-28 18:34:18,086 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-28 18:34:18,091 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-28 18:34:18,092 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 18:34:18,092 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 18:34:18,143 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 18:34:18,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 18:34:18,147 INFO L168 Benchmark]: Toolchain (without parser) took 3680.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 952.3 MB in the beginning and 873.9 MB in the end (delta: 78.3 MB). Peak memory consumption was 224.1 MB. Max. memory is 11.5 GB. [2019-11-28 18:34:18,154 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:34:18,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -161.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-11-28 18:34:18,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:34:18,157 INFO L168 Benchmark]: Boogie Preprocessor took 26.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:34:18,159 INFO L168 Benchmark]: RCFGBuilder took 392.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-28 18:34:18,160 INFO L168 Benchmark]: TraceAbstraction took 2411.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 880.6 MB in the end (delta: 208.8 MB). Peak memory consumption was 208.8 MB. Max. memory is 11.5 GB. [2019-11-28 18:34:18,161 INFO L168 Benchmark]: Witness Printer took 71.08 ms. Allocated memory is still 1.2 GB. Free memory was 880.6 MB in the beginning and 873.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 18:34:18,168 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 722.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -161.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 392.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2411.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 880.6 MB in the end (delta: 208.8 MB). Peak memory consumption was 208.8 MB. Max. memory is 11.5 GB. * Witness Printer took 71.08 ms. Allocated memory is still 1.2 GB. Free memory was 880.6 MB in the beginning and 873.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 49 ProgramPointsBefore, 15 ProgramPointsAfterwards, 43 TransitionsBefore, 11 TransitionsAfterwards, 234 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 118 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 242 CheckedPairsTotal, 37 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 3 procedures, 43 locations, 1 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 21 SDslu, 25 SDs, 0 SdLazy, 30 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...