./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.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 e9b1c96eed0367583bf25a0e47ad0463a90fc1bd ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:30:07,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:30:07,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:30:07,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:30:07,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:30:07,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:30:07,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:30:07,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:30:07,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:30:07,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:30:07,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:30:07,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:30:07,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:30:07,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:30:07,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:30:07,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:30:07,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:30:07,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:30:07,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:30:07,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:30:07,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:30:07,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:30:07,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:30:07,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:30:07,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:30:07,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:30:07,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:30:07,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:30:07,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:30:07,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:30:07,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:30:07,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:30:07,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:30:07,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:30:07,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:30:07,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:30:07,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:30:07,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:30:07,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:30:07,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:30:07,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:30:07,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:30:07,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:30:07,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:30:07,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:30:07,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:30:07,343 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:30:07,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:30:07,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:30:07,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:30:07,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:30:07,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:30:07,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:30:07,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:30:07,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:30:07,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:30:07,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:30:07,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:30:07,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:30:07,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:30:07,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:30:07,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:30:07,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:30:07,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:30:07,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:30:07,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:30:07,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:30:07,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:30:07,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:30:07,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:30:07,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:30:07,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9b1c96eed0367583bf25a0e47ad0463a90fc1bd [2020-10-26 00:30:07,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:30:07,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:30:07,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:30:07,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:30:07,791 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:30:07,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2020-10-26 00:30:07,883 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfb0cee0c/8a1affadaf8f44f894239892b29dec56/FLAGf2319b038 [2020-10-26 00:30:08,614 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:30:08,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_pso.opt.i [2020-10-26 00:30:08,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfb0cee0c/8a1affadaf8f44f894239892b29dec56/FLAGf2319b038 [2020-10-26 00:30:08,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfb0cee0c/8a1affadaf8f44f894239892b29dec56 [2020-10-26 00:30:08,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:30:08,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:30:08,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:30:08,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:30:08,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:30:08,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:30:08" (1/1) ... [2020-10-26 00:30:08,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178f0e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:08, skipping insertion in model container [2020-10-26 00:30:08,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:30:08" (1/1) ... [2020-10-26 00:30:08,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:30:08,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:30:09,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:30:09,430 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:30:09,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:30:09,610 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:30:09,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:09 WrapperNode [2020-10-26 00:30:09,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:30:09,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:30:09,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:30:09,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:30:09,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:09" (1/1) ... [2020-10-26 00:30:09,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:09" (1/1) ... [2020-10-26 00:30:09,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:30:09,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:30:09,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:30:09,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:30:09,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:09" (1/1) ... [2020-10-26 00:30:09,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:09" (1/1) ... [2020-10-26 00:30:09,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:09" (1/1) ... [2020-10-26 00:30:09,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:09" (1/1) ... [2020-10-26 00:30:09,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:09" (1/1) ... [2020-10-26 00:30:09,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:09" (1/1) ... [2020-10-26 00:30:09,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:09" (1/1) ... [2020-10-26 00:30:09,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:30:09,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:30:09,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:30:09,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:30:09,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:09" (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 [2020-10-26 00:30:09,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:30:09,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:30:09,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:30:09,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:30:09,787 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:30:09,787 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:30:09,787 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:30:09,787 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:30:09,788 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:30:09,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:30:09,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:30:09,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:30:09,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:30:09,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:30:09,790 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:30:10,150 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:30:10,150 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:30:10,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:10 BoogieIcfgContainer [2020-10-26 00:30:10,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:30:10,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:30:10,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:30:10,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:30:10,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:30:08" (1/3) ... [2020-10-26 00:30:10,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66aace39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:30:10, skipping insertion in model container [2020-10-26 00:30:10,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:09" (2/3) ... [2020-10-26 00:30:10,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66aace39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:30:10, skipping insertion in model container [2020-10-26 00:30:10,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:10" (3/3) ... [2020-10-26 00:30:10,162 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-10-26 00:30:10,174 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:30:10,175 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:30:10,179 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:30:10,180 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:30:10,218 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,218 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,219 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,220 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,222 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,222 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,222 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,223 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,226 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,227 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,227 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,227 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,232 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,233 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,233 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,233 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,236 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,236 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,236 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,236 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:10,239 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:30:10,252 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:30:10,280 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:30:10,280 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:30:10,281 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:30:10,281 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:30:10,281 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:30:10,281 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:30:10,281 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:30:10,281 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:30:10,295 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:30:10,297 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-26 00:30:10,301 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-26 00:30:10,303 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-26 00:30:10,371 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-26 00:30:10,373 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:30:10,380 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-26 00:30:10,389 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-26 00:30:12,669 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-26 00:30:12,774 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-10-26 00:30:12,775 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-10-26 00:30:12,785 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-26 00:30:12,824 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-26 00:30:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-26 00:30:12,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:30:12,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:12,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:12,835 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:12,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:12,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-10-26 00:30:12,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:12,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283919117] [2020-10-26 00:30:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:13,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283919117] [2020-10-26 00:30:13,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:13,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:30:13,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825748040] [2020-10-26 00:30:13,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:30:13,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:13,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:30:13,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:30:13,109 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-26 00:30:13,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:13,198 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-26 00:30:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:30:13,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-26 00:30:13,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:13,223 INFO L225 Difference]: With dead ends: 282 [2020-10-26 00:30:13,224 INFO L226 Difference]: Without dead ends: 218 [2020-10-26 00:30:13,227 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 [2020-10-26 00:30:13,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-26 00:30:13,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-26 00:30:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-26 00:30:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-26 00:30:13,330 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-26 00:30:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:13,331 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-26 00:30:13,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:30:13,331 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-26 00:30:13,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:30:13,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:13,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:13,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:30:13,339 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:13,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:13,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1771488223, now seen corresponding path program 1 times [2020-10-26 00:30:13,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:13,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296491644] [2020-10-26 00:30:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:13,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296491644] [2020-10-26 00:30:13,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:13,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:30:13,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838075599] [2020-10-26 00:30:13,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:30:13,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:13,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:30:13,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:30:13,481 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-26 00:30:13,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:13,499 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-26 00:30:13,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:30:13,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-26 00:30:13,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:13,503 INFO L225 Difference]: With dead ends: 202 [2020-10-26 00:30:13,503 INFO L226 Difference]: Without dead ends: 202 [2020-10-26 00:30:13,504 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 [2020-10-26 00:30:13,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-26 00:30:13,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-26 00:30:13,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-26 00:30:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-26 00:30:13,520 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-26 00:30:13,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:13,520 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-26 00:30:13,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:30:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-26 00:30:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:30:13,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:13,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:13,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:30:13,523 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:13,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:13,524 INFO L82 PathProgramCache]: Analyzing trace with hash -918442191, now seen corresponding path program 1 times [2020-10-26 00:30:13,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:13,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322941386] [2020-10-26 00:30:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:13,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322941386] [2020-10-26 00:30:13,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:13,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:30:13,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667548706] [2020-10-26 00:30:13,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:30:13,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:13,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:30:13,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:30:13,570 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-26 00:30:13,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:13,579 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-10-26 00:30:13,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:30:13,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-26 00:30:13,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:13,582 INFO L225 Difference]: With dead ends: 198 [2020-10-26 00:30:13,582 INFO L226 Difference]: Without dead ends: 198 [2020-10-26 00:30:13,582 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 [2020-10-26 00:30:13,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-26 00:30:13,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-26 00:30:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-26 00:30:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-10-26 00:30:13,596 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-10-26 00:30:13,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:13,597 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-10-26 00:30:13,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:30:13,597 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-10-26 00:30:13,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:30:13,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:13,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:13,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:30:13,600 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:13,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:13,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061887, now seen corresponding path program 1 times [2020-10-26 00:30:13,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:13,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590285872] [2020-10-26 00:30:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:13,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590285872] [2020-10-26 00:30:13,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:13,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:30:13,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443931656] [2020-10-26 00:30:13,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:30:13,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:13,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:30:13,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:30:13,731 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-10-26 00:30:13,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:13,738 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-10-26 00:30:13,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:30:13,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-26 00:30:13,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:13,741 INFO L225 Difference]: With dead ends: 192 [2020-10-26 00:30:13,741 INFO L226 Difference]: Without dead ends: 192 [2020-10-26 00:30:13,742 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 [2020-10-26 00:30:13,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-26 00:30:13,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-10-26 00:30:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-26 00:30:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-10-26 00:30:13,751 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-10-26 00:30:13,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:13,752 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-10-26 00:30:13,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:30:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-10-26 00:30:13,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:30:13,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:13,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:13,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:30:13,754 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:13,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:13,755 INFO L82 PathProgramCache]: Analyzing trace with hash 2114610558, now seen corresponding path program 1 times [2020-10-26 00:30:13,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:13,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838407275] [2020-10-26 00:30:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:13,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838407275] [2020-10-26 00:30:13,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:13,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:30:13,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235258344] [2020-10-26 00:30:13,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:30:13,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:13,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:30:13,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:30:13,795 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 3 states. [2020-10-26 00:30:13,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:13,808 INFO L93 Difference]: Finished difference Result 248 states and 635 transitions. [2020-10-26 00:30:13,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:30:13,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-26 00:30:13,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:13,810 INFO L225 Difference]: With dead ends: 248 [2020-10-26 00:30:13,810 INFO L226 Difference]: Without dead ends: 200 [2020-10-26 00:30:13,811 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 [2020-10-26 00:30:13,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-26 00:30:13,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2020-10-26 00:30:13,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-26 00:30:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 475 transitions. [2020-10-26 00:30:13,818 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 475 transitions. Word has length 12 [2020-10-26 00:30:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:13,819 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 475 transitions. [2020-10-26 00:30:13,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:30:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 475 transitions. [2020-10-26 00:30:13,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:30:13,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:13,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:13,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:30:13,821 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:13,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2115787814, now seen corresponding path program 1 times [2020-10-26 00:30:13,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:13,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065016517] [2020-10-26 00:30:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:13,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065016517] [2020-10-26 00:30:13,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:13,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:30:13,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743803986] [2020-10-26 00:30:13,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:30:13,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:13,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:30:13,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:30:13,875 INFO L87 Difference]: Start difference. First operand 188 states and 475 transitions. Second operand 4 states. [2020-10-26 00:30:13,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:13,911 INFO L93 Difference]: Finished difference Result 260 states and 643 transitions. [2020-10-26 00:30:13,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:30:13,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-26 00:30:13,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:13,913 INFO L225 Difference]: With dead ends: 260 [2020-10-26 00:30:13,913 INFO L226 Difference]: Without dead ends: 188 [2020-10-26 00:30:13,914 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 [2020-10-26 00:30:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-26 00:30:13,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-26 00:30:13,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-26 00:30:13,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 467 transitions. [2020-10-26 00:30:13,921 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 467 transitions. Word has length 12 [2020-10-26 00:30:13,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:13,921 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 467 transitions. [2020-10-26 00:30:13,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:30:13,921 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 467 transitions. [2020-10-26 00:30:13,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:30:13,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:13,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:13,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:30:13,923 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:13,923 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 2 times [2020-10-26 00:30:13,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:13,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211336066] [2020-10-26 00:30:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:13,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211336066] [2020-10-26 00:30:13,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:13,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:30:13,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455798350] [2020-10-26 00:30:13,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:30:13,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:13,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:30:13,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:30:13,990 INFO L87 Difference]: Start difference. First operand 188 states and 467 transitions. Second operand 4 states. [2020-10-26 00:30:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:14,040 INFO L93 Difference]: Finished difference Result 221 states and 507 transitions. [2020-10-26 00:30:14,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:30:14,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-26 00:30:14,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:14,042 INFO L225 Difference]: With dead ends: 221 [2020-10-26 00:30:14,042 INFO L226 Difference]: Without dead ends: 157 [2020-10-26 00:30:14,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:14,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-26 00:30:14,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-10-26 00:30:14,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-26 00:30:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 352 transitions. [2020-10-26 00:30:14,048 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 352 transitions. Word has length 12 [2020-10-26 00:30:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:14,048 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 352 transitions. [2020-10-26 00:30:14,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:30:14,048 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 352 transitions. [2020-10-26 00:30:14,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:30:14,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:14,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:14,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:30:14,049 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:14,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:14,050 INFO L82 PathProgramCache]: Analyzing trace with hash 596662620, now seen corresponding path program 1 times [2020-10-26 00:30:14,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:14,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351485209] [2020-10-26 00:30:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:14,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351485209] [2020-10-26 00:30:14,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:14,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:30:14,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22899767] [2020-10-26 00:30:14,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:30:14,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:14,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:30:14,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:14,112 INFO L87 Difference]: Start difference. First operand 157 states and 352 transitions. Second operand 5 states. [2020-10-26 00:30:14,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:14,182 INFO L93 Difference]: Finished difference Result 159 states and 336 transitions. [2020-10-26 00:30:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:30:14,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-26 00:30:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:14,184 INFO L225 Difference]: With dead ends: 159 [2020-10-26 00:30:14,184 INFO L226 Difference]: Without dead ends: 122 [2020-10-26 00:30:14,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:30:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-26 00:30:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-10-26 00:30:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-26 00:30:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 253 transitions. [2020-10-26 00:30:14,190 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 253 transitions. Word has length 13 [2020-10-26 00:30:14,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:14,190 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 253 transitions. [2020-10-26 00:30:14,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:30:14,191 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 253 transitions. [2020-10-26 00:30:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:30:14,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:14,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:14,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:30:14,192 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:14,193 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-10-26 00:30:14,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:14,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43874287] [2020-10-26 00:30:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:14,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43874287] [2020-10-26 00:30:14,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:14,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:30:14,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101263890] [2020-10-26 00:30:14,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:30:14,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:14,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:30:14,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:30:14,259 INFO L87 Difference]: Start difference. First operand 122 states and 253 transitions. Second operand 6 states. [2020-10-26 00:30:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:14,314 INFO L93 Difference]: Finished difference Result 118 states and 243 transitions. [2020-10-26 00:30:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:30:14,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-26 00:30:14,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:14,315 INFO L225 Difference]: With dead ends: 118 [2020-10-26 00:30:14,315 INFO L226 Difference]: Without dead ends: 54 [2020-10-26 00:30:14,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:30:14,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-26 00:30:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-26 00:30:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-26 00:30:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-10-26 00:30:14,318 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-10-26 00:30:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:14,318 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-10-26 00:30:14,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:30:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-10-26 00:30:14,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:30:14,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:14,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:14,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 00:30:14,320 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:14,321 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-10-26 00:30:14,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:14,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999221488] [2020-10-26 00:30:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:14,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999221488] [2020-10-26 00:30:14,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:14,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:30:14,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799759515] [2020-10-26 00:30:14,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:30:14,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:14,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:30:14,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:30:14,357 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-10-26 00:30:14,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:14,377 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-10-26 00:30:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:30:14,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 00:30:14,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:14,379 INFO L225 Difference]: With dead ends: 63 [2020-10-26 00:30:14,379 INFO L226 Difference]: Without dead ends: 35 [2020-10-26 00:30:14,379 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 [2020-10-26 00:30:14,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-26 00:30:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-26 00:30:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-26 00:30:14,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-26 00:30:14,381 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-26 00:30:14,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:14,381 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-26 00:30:14,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:30:14,382 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-26 00:30:14,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:30:14,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:14,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:14,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 00:30:14,382 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:14,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:14,383 INFO L82 PathProgramCache]: Analyzing trace with hash -281731452, now seen corresponding path program 2 times [2020-10-26 00:30:14,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:14,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153963938] [2020-10-26 00:30:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:14,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153963938] [2020-10-26 00:30:14,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:14,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:30:14,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424829479] [2020-10-26 00:30:14,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:30:14,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:14,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:30:14,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:30:14,420 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-26 00:30:14,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:14,437 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-10-26 00:30:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:30:14,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 00:30:14,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:14,438 INFO L225 Difference]: With dead ends: 34 [2020-10-26 00:30:14,438 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:30:14,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:14,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:30:14,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:30:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:30:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:30:14,439 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-26 00:30:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:14,439 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:30:14,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:30:14,440 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:30:14,440 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:30:14,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 00:30:14,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:30:14 BasicIcfg [2020-10-26 00:30:14,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:30:14,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:30:14,445 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:30:14,445 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:30:14,446 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:10" (3/4) ... [2020-10-26 00:30:14,449 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:30:14,456 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:30:14,456 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:30:14,457 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:30:14,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:30:14,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:30:14,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:30:14,463 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:30:14,505 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:30:14,505 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:30:14,507 INFO L168 Benchmark]: Toolchain (without parser) took 5597.56 ms. Allocated memory was 39.8 MB in the beginning and 121.6 MB in the end (delta: 81.8 MB). Free memory was 24.4 MB in the beginning and 41.0 MB in the end (delta: -16.6 MB). Peak memory consumption was 63.8 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:14,508 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 39.8 MB. Free memory was 24.4 MB in the beginning and 24.3 MB in the end (delta: 35.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:30:14,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.36 ms. Allocated memory was 39.8 MB in the beginning and 50.3 MB in the end (delta: 10.5 MB). Free memory was 23.7 MB in the beginning and 24.1 MB in the end (delta: -315.8 kB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:14,509 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.92 ms. Allocated memory is still 50.3 MB. Free memory was 23.9 MB in the beginning and 22.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:30:14,510 INFO L168 Benchmark]: Boogie Preprocessor took 28.72 ms. Allocated memory is still 50.3 MB. Free memory was 22.1 MB in the beginning and 20.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:30:14,510 INFO L168 Benchmark]: RCFGBuilder took 459.18 ms. Allocated memory is still 50.3 MB. Free memory was 20.7 MB in the beginning and 22.8 MB in the end (delta: -2.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:14,511 INFO L168 Benchmark]: TraceAbstraction took 4289.62 ms. Allocated memory was 50.3 MB in the beginning and 121.6 MB in the end (delta: 71.3 MB). Free memory was 22.4 MB in the beginning and 44.1 MB in the end (delta: -21.8 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:14,511 INFO L168 Benchmark]: Witness Printer took 60.71 ms. Allocated memory is still 121.6 MB. Free memory was 44.1 MB in the beginning and 41.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:14,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 39.8 MB. Free memory was 24.4 MB in the beginning and 24.3 MB in the end (delta: 35.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 691.36 ms. Allocated memory was 39.8 MB in the beginning and 50.3 MB in the end (delta: 10.5 MB). Free memory was 23.7 MB in the beginning and 24.1 MB in the end (delta: -315.8 kB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.92 ms. Allocated memory is still 50.3 MB. Free memory was 23.9 MB in the beginning and 22.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.72 ms. Allocated memory is still 50.3 MB. Free memory was 22.1 MB in the beginning and 20.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 459.18 ms. Allocated memory is still 50.3 MB. Free memory was 20.7 MB in the beginning and 22.8 MB in the end (delta: -2.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4289.62 ms. Allocated memory was 50.3 MB in the beginning and 121.6 MB in the end (delta: 71.3 MB). Free memory was 22.4 MB in the beginning and 44.1 MB in the end (delta: -21.8 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.1 GB. * Witness Printer took 60.71 ms. Allocated memory is still 121.6 MB. Free memory was 44.1 MB in the beginning and 41.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 891 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 55 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 220 SDtfs, 143 SDslu, 240 SDs, 0 SdLazy, 133 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 11 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 4359 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...