./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/15_dekker.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/15_dekker.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 640b733ba16aaad34510968bf0b80838856a22c1 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:46:54,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 02:46:54,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 02:46:54,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 02:46:54,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 02:46:54,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 02:46:54,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 02:46:54,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 02:46:54,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 02:46:54,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 02:46:54,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 02:46:54,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 02:46:54,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 02:46:54,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 02:46:54,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 02:46:54,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 02:46:54,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 02:46:54,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 02:46:54,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 02:46:54,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 02:46:54,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 02:46:54,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 02:46:54,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 02:46:54,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 02:46:54,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 02:46:54,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 02:46:54,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 02:46:54,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 02:46:54,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 02:46:54,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 02:46:54,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 02:46:54,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 02:46:54,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 02:46:54,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 02:46:54,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 02:46:54,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 02:46:54,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 02:46:54,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 02:46:54,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 02:46:54,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 02:46:54,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 02:46:54,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 02:46:54,354 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 02:46:54,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 02:46:54,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 02:46:54,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 02:46:54,358 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 02:46:54,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 02:46:54,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 02:46:54,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 02:46:54,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 02:46:54,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 02:46:54,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 02:46:54,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 02:46:54,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 02:46:54,362 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 02:46:54,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 02:46:54,363 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 02:46:54,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 02:46:54,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 02:46:54,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 02:46:54,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 02:46:54,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 02:46:54,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:46:54,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 02:46:54,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 02:46:54,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 02:46:54,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 02:46:54,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 02:46:54,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 02:46:54,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 02:46:54,366 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 -> 640b733ba16aaad34510968bf0b80838856a22c1 [2020-10-20 02:46:54,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 02:46:54,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 02:46:54,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 02:46:54,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 02:46:54,644 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 02:46:54,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/15_dekker.i [2020-10-20 02:46:54,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3be46fb92/eb896ef236b1461cb4c5d975e6af3f09/FLAG9d7f2c668 [2020-10-20 02:46:55,279 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 02:46:55,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/15_dekker.i [2020-10-20 02:46:55,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3be46fb92/eb896ef236b1461cb4c5d975e6af3f09/FLAG9d7f2c668 [2020-10-20 02:46:55,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3be46fb92/eb896ef236b1461cb4c5d975e6af3f09 [2020-10-20 02:46:55,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 02:46:55,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 02:46:55,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 02:46:55,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 02:46:55,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 02:46:55,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:46:55" (1/1) ... [2020-10-20 02:46:55,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e037be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:55, skipping insertion in model container [2020-10-20 02:46:55,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:46:55" (1/1) ... [2020-10-20 02:46:55,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 02:46:55,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 02:46:55,937 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-20 02:46:56,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:46:56,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 02:46:56,109 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-20 02:46:56,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:46:56,229 INFO L208 MainTranslator]: Completed translation [2020-10-20 02:46:56,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:56 WrapperNode [2020-10-20 02:46:56,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 02:46:56,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 02:46:56,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 02:46:56,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 02:46:56,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:56" (1/1) ... [2020-10-20 02:46:56,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:56" (1/1) ... [2020-10-20 02:46:56,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 02:46:56,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 02:46:56,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 02:46:56,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 02:46:56,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:56" (1/1) ... [2020-10-20 02:46:56,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:56" (1/1) ... [2020-10-20 02:46:56,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:56" (1/1) ... [2020-10-20 02:46:56,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:56" (1/1) ... [2020-10-20 02:46:56,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:56" (1/1) ... [2020-10-20 02:46:56,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:56" (1/1) ... [2020-10-20 02:46:56,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:56" (1/1) ... [2020-10-20 02:46:56,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 02:46:56,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 02:46:56,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 02:46:56,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 02:46:56,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:56" (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 02:46:56,410 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-20 02:46:56,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-20 02:46:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 02:46:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 02:46:56,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 02:46:56,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 02:46:56,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 02:46:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 02:46:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 02:46:56,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 02:46:56,417 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 02:46:56,906 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 02:46:56,906 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-20 02:46:56,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:46:56 BoogieIcfgContainer [2020-10-20 02:46:56,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 02:46:56,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 02:46:56,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 02:46:56,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 02:46:56,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 02:46:55" (1/3) ... [2020-10-20 02:46:56,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103cbd8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:46:56, skipping insertion in model container [2020-10-20 02:46:56,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:46:56" (2/3) ... [2020-10-20 02:46:56,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103cbd8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:46:56, skipping insertion in model container [2020-10-20 02:46:56,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:46:56" (3/3) ... [2020-10-20 02:46:56,919 INFO L111 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2020-10-20 02:46:56,932 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 02:46:56,933 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 02:46:56,940 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 02:46:56,942 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 02:46:56,969 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,976 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,981 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,981 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,981 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,981 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:46:56,988 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 02:46:57,002 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 02:46:57,022 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 02:46:57,022 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 02:46:57,023 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 02:46:57,023 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 02:46:57,023 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 02:46:57,023 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 02:46:57,024 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 02:46:57,024 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 02:46:57,039 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 02:46:57,042 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 85 transitions, 175 flow [2020-10-20 02:46:57,045 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 85 transitions, 175 flow [2020-10-20 02:46:57,048 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 85 transitions, 175 flow [2020-10-20 02:46:57,096 INFO L129 PetriNetUnfolder]: 14/84 cut-off events. [2020-10-20 02:46:57,096 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 02:46:57,103 INFO L80 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 84 events. 14/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2020-10-20 02:46:57,107 INFO L117 LiptonReduction]: Number of co-enabled transitions 2262 [2020-10-20 02:46:58,736 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-20 02:46:59,050 INFO L132 LiptonReduction]: Checked pairs total: 4824 [2020-10-20 02:46:59,051 INFO L134 LiptonReduction]: Total number of compositions: 85 [2020-10-20 02:46:59,058 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 31 transitions, 67 flow [2020-10-20 02:46:59,077 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 123 states. [2020-10-20 02:46:59,079 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-10-20 02:46:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 02:46:59,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:46:59,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 02:46:59,089 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:46:59,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:46:59,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1924425874, now seen corresponding path program 1 times [2020-10-20 02:46:59,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:46:59,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61391139] [2020-10-20 02:46:59,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:46:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:46:59,309 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 02:46:59,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61391139] [2020-10-20 02:46:59,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:46:59,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:46:59,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518145001] [2020-10-20 02:46:59,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:46:59,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:46:59,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:46:59,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:46:59,333 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-10-20 02:46:59,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:46:59,397 INFO L93 Difference]: Finished difference Result 137 states and 294 transitions. [2020-10-20 02:46:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:46:59,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 02:46:59,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:46:59,419 INFO L225 Difference]: With dead ends: 137 [2020-10-20 02:46:59,419 INFO L226 Difference]: Without dead ends: 98 [2020-10-20 02:46:59,421 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 02:46:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-20 02:46:59,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-10-20 02:46:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-20 02:46:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 210 transitions. [2020-10-20 02:46:59,502 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 210 transitions. Word has length 6 [2020-10-20 02:46:59,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:46:59,503 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 210 transitions. [2020-10-20 02:46:59,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:46:59,504 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 210 transitions. [2020-10-20 02:46:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 02:46:59,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:46:59,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 02:46:59,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 02:46:59,505 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:46:59,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:46:59,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1926047114, now seen corresponding path program 1 times [2020-10-20 02:46:59,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:46:59,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087663061] [2020-10-20 02:46:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:46:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:46:59,635 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 02:46:59,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087663061] [2020-10-20 02:46:59,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:46:59,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:46:59,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246186799] [2020-10-20 02:46:59,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:46:59,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:46:59,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:46:59,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:46:59,641 INFO L87 Difference]: Start difference. First operand 92 states and 210 transitions. Second operand 3 states. [2020-10-20 02:46:59,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:46:59,660 INFO L93 Difference]: Finished difference Result 87 states and 193 transitions. [2020-10-20 02:46:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:46:59,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 02:46:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:46:59,663 INFO L225 Difference]: With dead ends: 87 [2020-10-20 02:46:59,663 INFO L226 Difference]: Without dead ends: 66 [2020-10-20 02:46:59,664 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 02:46:59,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-20 02:46:59,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-20 02:46:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 02:46:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 146 transitions. [2020-10-20 02:46:59,674 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 146 transitions. Word has length 6 [2020-10-20 02:46:59,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:46:59,674 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 146 transitions. [2020-10-20 02:46:59,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:46:59,675 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 146 transitions. [2020-10-20 02:46:59,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 02:46:59,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:46:59,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:46:59,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 02:46:59,677 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:46:59,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:46:59,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1365740041, now seen corresponding path program 1 times [2020-10-20 02:46:59,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:46:59,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906596795] [2020-10-20 02:46:59,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:46:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:46:59,730 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 02:46:59,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906596795] [2020-10-20 02:46:59,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:46:59,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 02:46:59,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850370840] [2020-10-20 02:46:59,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 02:46:59,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:46:59,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 02:46:59,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:46:59,732 INFO L87 Difference]: Start difference. First operand 66 states and 146 transitions. Second operand 4 states. [2020-10-20 02:46:59,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:46:59,789 INFO L93 Difference]: Finished difference Result 90 states and 214 transitions. [2020-10-20 02:46:59,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 02:46:59,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 02:46:59,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:46:59,791 INFO L225 Difference]: With dead ends: 90 [2020-10-20 02:46:59,792 INFO L226 Difference]: Without dead ends: 64 [2020-10-20 02:46:59,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:46:59,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-20 02:46:59,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-20 02:46:59,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-20 02:46:59,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 139 transitions. [2020-10-20 02:46:59,802 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 139 transitions. Word has length 9 [2020-10-20 02:46:59,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:46:59,803 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 139 transitions. [2020-10-20 02:46:59,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 02:46:59,803 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 139 transitions. [2020-10-20 02:46:59,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 02:46:59,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:46:59,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:46:59,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 02:46:59,805 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:46:59,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:46:59,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1926747191, now seen corresponding path program 2 times [2020-10-20 02:46:59,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:46:59,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455503760] [2020-10-20 02:46:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:46:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:46:59,847 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 02:46:59,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455503760] [2020-10-20 02:46:59,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:46:59,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 02:46:59,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675203646] [2020-10-20 02:46:59,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 02:46:59,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:46:59,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 02:46:59,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:46:59,850 INFO L87 Difference]: Start difference. First operand 64 states and 139 transitions. Second operand 4 states. [2020-10-20 02:46:59,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:46:59,891 INFO L93 Difference]: Finished difference Result 88 states and 205 transitions. [2020-10-20 02:46:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 02:46:59,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 02:46:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:46:59,893 INFO L225 Difference]: With dead ends: 88 [2020-10-20 02:46:59,893 INFO L226 Difference]: Without dead ends: 61 [2020-10-20 02:46:59,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:46:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-20 02:46:59,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-20 02:46:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-20 02:46:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 130 transitions. [2020-10-20 02:46:59,901 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 130 transitions. Word has length 9 [2020-10-20 02:46:59,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:46:59,901 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 130 transitions. [2020-10-20 02:46:59,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 02:46:59,901 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 130 transitions. [2020-10-20 02:46:59,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 02:46:59,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:46:59,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:46:59,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 02:46:59,903 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:46:59,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:46:59,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1109849445, now seen corresponding path program 1 times [2020-10-20 02:46:59,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:46:59,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235366294] [2020-10-20 02:46:59,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:46:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:46:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:46:59,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235366294] [2020-10-20 02:46:59,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:46:59,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 02:46:59,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265156214] [2020-10-20 02:46:59,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 02:46:59,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:46:59,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 02:46:59,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:46:59,945 INFO L87 Difference]: Start difference. First operand 61 states and 130 transitions. Second operand 4 states. [2020-10-20 02:46:59,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:46:59,972 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-10-20 02:46:59,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 02:46:59,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 02:46:59,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:46:59,973 INFO L225 Difference]: With dead ends: 40 [2020-10-20 02:46:59,973 INFO L226 Difference]: Without dead ends: 37 [2020-10-20 02:46:59,974 INFO L677 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 [2020-10-20 02:46:59,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-20 02:46:59,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-20 02:46:59,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 02:46:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions. [2020-10-20 02:46:59,993 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 13 [2020-10-20 02:46:59,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:46:59,994 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions. [2020-10-20 02:46:59,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 02:46:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions. [2020-10-20 02:46:59,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 02:46:59,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:46:59,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:46:59,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 02:46:59,996 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:46:59,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:46:59,996 INFO L82 PathProgramCache]: Analyzing trace with hash 448715690, now seen corresponding path program 1 times [2020-10-20 02:46:59,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:46:59,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162969291] [2020-10-20 02:46:59,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:47:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:47:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:47:00,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162969291] [2020-10-20 02:47:00,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:47:00,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 02:47:00,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539763509] [2020-10-20 02:47:00,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 02:47:00,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:47:00,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 02:47:00,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:47:00,053 INFO L87 Difference]: Start difference. First operand 37 states and 59 transitions. Second operand 4 states. [2020-10-20 02:47:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:47:00,068 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-10-20 02:47:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 02:47:00,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 02:47:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:47:00,069 INFO L225 Difference]: With dead ends: 6 [2020-10-20 02:47:00,069 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 02:47:00,070 INFO L677 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 [2020-10-20 02:47:00,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 02:47:00,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 02:47:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 02:47:00,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 02:47:00,070 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-20 02:47:00,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:47:00,071 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 02:47:00,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 02:47:00,071 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 02:47:00,071 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 02:47:00,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 02:47:00,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 02:47:00 BasicIcfg [2020-10-20 02:47:00,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 02:47:00,076 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 02:47:00,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 02:47:00,076 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 02:47:00,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:46:56" (3/4) ... [2020-10-20 02:47:00,081 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 02:47:00,089 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-10-20 02:47:00,097 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 02:47:00,097 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 02:47:00,097 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 02:47:00,098 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 02:47:00,176 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 02:47:00,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 02:47:00,186 INFO L168 Benchmark]: Toolchain (without parser) took 4623.14 ms. Allocated memory was 34.6 MB in the beginning and 66.1 MB in the end (delta: 31.5 MB). Free memory was 13.7 MB in the beginning and 32.8 MB in the end (delta: -19.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:00,187 INFO L168 Benchmark]: CDTParser took 1.11 ms. Allocated memory is still 32.0 MB. Free memory was 7.8 MB in the beginning and 7.8 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-20 02:47:00,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.89 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 12.8 MB in the beginning and 18.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:00,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.22 ms. Allocated memory is still 43.5 MB. Free memory was 18.1 MB in the beginning and 16.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:00,193 INFO L168 Benchmark]: Boogie Preprocessor took 37.83 ms. Allocated memory is still 43.5 MB. Free memory was 16.1 MB in the beginning and 14.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:00,193 INFO L168 Benchmark]: RCFGBuilder took 577.60 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 14.3 MB in the beginning and 26.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:00,195 INFO L168 Benchmark]: TraceAbstraction took 3165.77 ms. Allocated memory was 46.1 MB in the beginning and 66.1 MB in the end (delta: 19.9 MB). Free memory was 25.9 MB in the beginning and 36.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:00,196 INFO L168 Benchmark]: Witness Printer took 100.26 ms. Allocated memory is still 66.1 MB. Free memory was 36.5 MB in the beginning and 32.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 02:47:00,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11 ms. Allocated memory is still 32.0 MB. Free memory was 7.8 MB in the beginning and 7.8 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 668.89 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 12.8 MB in the beginning and 18.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 61.22 ms. Allocated memory is still 43.5 MB. Free memory was 18.1 MB in the beginning and 16.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 37.83 ms. Allocated memory is still 43.5 MB. Free memory was 16.1 MB in the beginning and 14.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 577.60 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 14.3 MB in the beginning and 26.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3165.77 ms. Allocated memory was 46.1 MB in the beginning and 66.1 MB in the end (delta: 19.9 MB). Free memory was 25.9 MB in the beginning and 36.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * Witness Printer took 100.26 ms. Allocated memory is still 66.1 MB. Free memory was 36.5 MB in the beginning and 32.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1651 VarBasedMoverChecksPositive, 113 VarBasedMoverChecksNegative, 73 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 175 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 75 PlacesBefore, 27 PlacesAfterwards, 85 TransitionsBefore, 31 TransitionsAfterwards, 2262 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 6 ChoiceCompositions, 85 TotalNumberOfCompositions, 4824 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: 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, 72 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 190 SDtfs, 140 SDslu, 145 SDs, 0 SdLazy, 64 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 846 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 2/2 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...