./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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-ext/23_lu-fig2.fixed.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 62fd7ea4bef52a1e791bedc427ce7156627e7f58 .................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 02:47:06,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 02:47:06,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 02:47:06,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 02:47:06,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 02:47:06,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 02:47:06,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 02:47:06,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 02:47:06,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 02:47:06,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 02:47:06,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 02:47:06,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 02:47:06,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 02:47:06,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 02:47:06,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 02:47:06,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 02:47:06,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 02:47:06,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 02:47:06,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 02:47:06,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 02:47:06,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 02:47:06,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 02:47:06,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 02:47:06,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 02:47:06,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 02:47:06,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 02:47:06,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 02:47:06,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 02:47:06,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 02:47:06,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 02:47:06,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 02:47:06,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 02:47:06,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 02:47:06,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 02:47:06,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 02:47:06,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 02:47:06,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 02:47:06,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 02:47:06,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 02:47:06,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 02:47:06,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 02:47:06,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 02:47:06,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 02:47:06,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 02:47:06,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 02:47:06,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 02:47:06,222 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 02:47:06,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 02:47:06,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 02:47:06,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 02:47:06,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 02:47:06,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 02:47:06,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 02:47:06,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 02:47:06,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 02:47:06,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 02:47:06,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 02:47:06,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 02:47:06,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 02:47:06,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 02:47:06,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 02:47:06,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 02:47:06,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 02:47:06,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:47:06,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 02:47:06,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 02:47:06,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 02:47:06,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 02:47:06,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 02:47:06,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 02:47:06,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 02:47:06,231 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(reach_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 -> 62fd7ea4bef52a1e791bedc427ce7156627e7f58 [2020-10-20 02:47:06,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 02:47:06,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 02:47:06,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 02:47:06,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 02:47:06,487 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 02:47:06,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i [2020-10-20 02:47:06,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64464ae6/da86b78dc1334c3c87c7c96330d39117/FLAGb43cd0f8e [2020-10-20 02:47:07,222 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 02:47:07,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i [2020-10-20 02:47:07,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64464ae6/da86b78dc1334c3c87c7c96330d39117/FLAGb43cd0f8e [2020-10-20 02:47:07,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a64464ae6/da86b78dc1334c3c87c7c96330d39117 [2020-10-20 02:47:07,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 02:47:07,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 02:47:07,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 02:47:07,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 02:47:07,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 02:47:07,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:47:07" (1/1) ... [2020-10-20 02:47:07,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff30fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:07, skipping insertion in model container [2020-10-20 02:47:07,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:47:07" (1/1) ... [2020-10-20 02:47:07,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 02:47:07,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 02:47:07,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:47:07,990 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 02:47:08,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:47:08,162 INFO L208 MainTranslator]: Completed translation [2020-10-20 02:47:08,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:08 WrapperNode [2020-10-20 02:47:08,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 02:47:08,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 02:47:08,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 02:47:08,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 02:47:08,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:08" (1/1) ... [2020-10-20 02:47:08,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:08" (1/1) ... [2020-10-20 02:47:08,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 02:47:08,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 02:47:08,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 02:47:08,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 02:47:08,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:08" (1/1) ... [2020-10-20 02:47:08,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:08" (1/1) ... [2020-10-20 02:47:08,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:08" (1/1) ... [2020-10-20 02:47:08,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:08" (1/1) ... [2020-10-20 02:47:08,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:08" (1/1) ... [2020-10-20 02:47:08,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:08" (1/1) ... [2020-10-20 02:47:08,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:08" (1/1) ... [2020-10-20 02:47:08,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 02:47:08,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 02:47:08,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 02:47:08,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 02:47:08,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:47:08,378 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-20 02:47:08,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-20 02:47:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 02:47:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 02:47:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 02:47:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 02:47:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 02:47:08,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 02:47:08,381 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 02:47:09,065 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 02:47:09,065 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 02:47:09,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:47:09 BoogieIcfgContainer [2020-10-20 02:47:09,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 02:47:09,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 02:47:09,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 02:47:09,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 02:47:09,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 02:47:07" (1/3) ... [2020-10-20 02:47:09,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36aa6829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:47:09, skipping insertion in model container [2020-10-20 02:47:09,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:47:08" (2/3) ... [2020-10-20 02:47:09,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36aa6829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:47:09, skipping insertion in model container [2020-10-20 02:47:09,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:47:09" (3/3) ... [2020-10-20 02:47:09,077 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2020-10-20 02:47:09,089 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 02:47:09,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 02:47:09,096 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 02:47:09,097 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 02:47:09,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,137 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,138 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,138 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,139 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,139 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,147 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,147 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:47:09,152 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 02:47:09,166 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 02:47:09,188 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 02:47:09,188 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 02:47:09,189 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 02:47:09,189 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 02:47:09,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 02:47:09,189 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 02:47:09,189 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 02:47:09,189 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 02:47:09,202 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 02:47:09,205 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 47 transitions, 99 flow [2020-10-20 02:47:09,208 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 47 transitions, 99 flow [2020-10-20 02:47:09,211 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2020-10-20 02:47:09,244 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2020-10-20 02:47:09,244 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 02:47:09,249 INFO L80 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-10-20 02:47:09,250 INFO L117 LiptonReduction]: Number of co-enabled transitions 378 [2020-10-20 02:47:10,770 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-20 02:47:10,880 INFO L132 LiptonReduction]: Checked pairs total: 879 [2020-10-20 02:47:10,880 INFO L134 LiptonReduction]: Total number of compositions: 36 [2020-10-20 02:47:10,887 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 14 transitions, 33 flow [2020-10-20 02:47:10,896 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 38 states. [2020-10-20 02:47:10,898 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-20 02:47:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 02:47:10,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:47:10,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 02:47:10,906 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:47:10,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:47:10,911 INFO L82 PathProgramCache]: Analyzing trace with hash 11878376, now seen corresponding path program 1 times [2020-10-20 02:47:10,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:47:10,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589990945] [2020-10-20 02:47:10,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:47:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:47:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:47:11,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589990945] [2020-10-20 02:47:11,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:47:11,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 02:47:11,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832617651] [2020-10-20 02:47:11,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:47:11,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:47:11,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:47:11,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:47:11,130 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-20 02:47:11,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:47:11,163 INFO L93 Difference]: Finished difference Result 29 states and 50 transitions. [2020-10-20 02:47:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:47:11,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-20 02:47:11,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:47:11,188 INFO L225 Difference]: With dead ends: 29 [2020-10-20 02:47:11,188 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 02:47:11,190 INFO L677 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 [2020-10-20 02:47:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 02:47:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-20 02:47:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 02:47:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 38 transitions. [2020-10-20 02:47:11,228 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 38 transitions. Word has length 4 [2020-10-20 02:47:11,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:47:11,228 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 38 transitions. [2020-10-20 02:47:11,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:47:11,228 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 38 transitions. [2020-10-20 02:47:11,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 02:47:11,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:47:11,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 02:47:11,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 02:47:11,230 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:47:11,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:47:11,230 INFO L82 PathProgramCache]: Analyzing trace with hash 368238171, now seen corresponding path program 1 times [2020-10-20 02:47:11,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:47:11,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016295809] [2020-10-20 02:47:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:47:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:47:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:47:11,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016295809] [2020-10-20 02:47:11,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:47:11,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:47:11,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147011615] [2020-10-20 02:47:11,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:47:11,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:47:11,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:47:11,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:47:11,285 INFO L87 Difference]: Start difference. First operand 22 states and 38 transitions. Second operand 3 states. [2020-10-20 02:47:11,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:47:11,295 INFO L93 Difference]: Finished difference Result 21 states and 35 transitions. [2020-10-20 02:47:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:47:11,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-20 02:47:11,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:47:11,297 INFO L225 Difference]: With dead ends: 21 [2020-10-20 02:47:11,297 INFO L226 Difference]: Without dead ends: 18 [2020-10-20 02:47:11,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:47:11,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-20 02:47:11,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-20 02:47:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 02:47:11,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2020-10-20 02:47:11,302 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 27 transitions. Word has length 5 [2020-10-20 02:47:11,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:47:11,302 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 27 transitions. [2020-10-20 02:47:11,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:47:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 27 transitions. [2020-10-20 02:47:11,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 02:47:11,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:47:11,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:47:11,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 02:47:11,304 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:47:11,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:47:11,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1689707517, now seen corresponding path program 1 times [2020-10-20 02:47:11,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:47:11,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158869966] [2020-10-20 02:47:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:47:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:47:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:47:11,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158869966] [2020-10-20 02:47:11,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:47:11,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 02:47:11,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236749608] [2020-10-20 02:47:11,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 02:47:11,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:47:11,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 02:47:11,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:47:11,422 INFO L87 Difference]: Start difference. First operand 18 states and 27 transitions. Second operand 4 states. [2020-10-20 02:47:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:47:11,452 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2020-10-20 02:47:11,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 02:47:11,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 02:47:11,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:47:11,453 INFO L225 Difference]: With dead ends: 14 [2020-10-20 02:47:11,454 INFO L226 Difference]: Without dead ends: 14 [2020-10-20 02:47:11,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 02:47:11,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-20 02:47:11,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-20 02:47:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 02:47:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2020-10-20 02:47:11,459 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 7 [2020-10-20 02:47:11,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:47:11,459 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-10-20 02:47:11,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 02:47:11,459 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2020-10-20 02:47:11,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 02:47:11,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:47:11,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:47:11,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 02:47:11,460 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:47:11,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:47:11,461 INFO L82 PathProgramCache]: Analyzing trace with hash 310628894, now seen corresponding path program 1 times [2020-10-20 02:47:11,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:47:11,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411020727] [2020-10-20 02:47:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:47:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:47:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:47:11,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411020727] [2020-10-20 02:47:11,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:47:11,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:47:11,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565032072] [2020-10-20 02:47:11,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 02:47:11,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:47:11,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 02:47:11,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:47:11,559 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 4 states. [2020-10-20 02:47:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:47:11,568 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2020-10-20 02:47:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 02:47:11,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 02:47:11,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:47:11,569 INFO L225 Difference]: With dead ends: 13 [2020-10-20 02:47:11,569 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 02:47:11,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:47:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 02:47:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 02:47:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 02:47:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 02:47:11,570 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-20 02:47:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:47:11,571 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 02:47:11,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 02:47:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 02:47:11,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 02:47:11,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 02:47:11,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 02:47:11 BasicIcfg [2020-10-20 02:47:11,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 02:47:11,575 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 02:47:11,575 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 02:47:11,575 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 02:47:11,576 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:47:09" (3/4) ... [2020-10-20 02:47:11,579 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 02:47:11,584 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-10-20 02:47:11,590 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 48 nodes and edges [2020-10-20 02:47:11,590 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-20 02:47:11,591 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 02:47:11,591 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 02:47:11,650 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 02:47:11,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 02:47:11,652 INFO L168 Benchmark]: Toolchain (without parser) took 4115.16 ms. Allocated memory was 40.9 MB in the beginning and 59.2 MB in the end (delta: 18.4 MB). Free memory was 18.0 MB in the beginning and 6.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:11,653 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.4 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. [2020-10-20 02:47:11,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.44 ms. Allocated memory was 40.9 MB in the beginning and 43.0 MB in the end (delta: 2.1 MB). Free memory was 17.1 MB in the beginning and 13.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:11,668 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.29 ms. Allocated memory is still 43.0 MB. Free memory was 13.4 MB in the beginning and 11.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:11,669 INFO L168 Benchmark]: Boogie Preprocessor took 36.72 ms. Allocated memory is still 43.0 MB. Free memory was 11.1 MB in the beginning and 9.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:11,669 INFO L168 Benchmark]: RCFGBuilder took 772.50 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 9.6 MB in the beginning and 15.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:11,670 INFO L168 Benchmark]: TraceAbstraction took 2505.84 ms. Allocated memory was 45.1 MB in the beginning and 59.2 MB in the end (delta: 14.2 MB). Free memory was 15.1 MB in the beginning and 9.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:11,671 INFO L168 Benchmark]: Witness Printer took 75.14 ms. Allocated memory is still 59.2 MB. Free memory was 9.4 MB in the beginning and 6.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:11,675 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.4 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 621.44 ms. Allocated memory was 40.9 MB in the beginning and 43.0 MB in the end (delta: 2.1 MB). Free memory was 17.1 MB in the beginning and 13.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 93.29 ms. Allocated memory is still 43.0 MB. Free memory was 13.4 MB in the beginning and 11.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 36.72 ms. Allocated memory is still 43.0 MB. Free memory was 11.1 MB in the beginning and 9.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 772.50 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 9.6 MB in the beginning and 15.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2505.84 ms. Allocated memory was 45.1 MB in the beginning and 59.2 MB in the end (delta: 14.2 MB). Free memory was 15.1 MB in the beginning and 9.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 14.3 GB. * Witness Printer took 75.14 ms. Allocated memory is still 59.2 MB. Free memory was 9.4 MB in the beginning and 6.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 254 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 41 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 49 PlacesBefore, 17 PlacesAfterwards, 47 TransitionsBefore, 14 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 36 TotalNumberOfCompositions, 879 MoverChecksTotal - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 39 SDtfs, 20 SDslu, 20 SDs, 0 SdLazy, 24 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 415 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...