./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe018_tso.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/safe018_tso.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 aae43c48d6bb273b2091b89bffd563cd24fb680d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:30:56,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:30:56,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:30:56,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:30:56,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:30:56,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:30:56,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:30:56,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:30:56,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:30:56,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:30:56,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:30:56,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:30:56,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:30:56,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:30:56,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:30:56,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:30:56,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:30:56,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:30:56,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:30:56,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:30:56,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:30:56,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:30:56,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:30:56,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:30:56,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:30:56,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:30:56,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:30:56,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:30:56,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:30:56,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:30:56,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:30:56,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:30:56,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:30:56,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:30:56,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:30:56,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:30:56,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:30:56,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:30:56,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:30:56,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:30:56,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:30:56,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:30:56,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:30:56,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:30:56,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:30:56,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:30:56,445 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:30:56,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:30:56,445 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:30:56,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:30:56,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:30:56,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:30:56,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:30:56,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:30:56,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:30:56,449 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:30:56,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:30:56,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:30:56,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:30:56,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:30:56,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:30:56,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:30:56,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:30:56,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:30:56,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:30:56,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:30:56,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:30:56,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:30:56,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:30:56,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:30:56,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:30:56,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aae43c48d6bb273b2091b89bffd563cd24fb680d [2020-10-26 00:30:56,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:30:56,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:30:56,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:30:56,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:30:56,938 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:30:56,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe018_tso.opt.i [2020-10-26 00:30:57,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b44c629f/5ffcb4eb20e540799eada69b89ec2b07/FLAGde133179e [2020-10-26 00:30:57,817 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:30:57,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_tso.opt.i [2020-10-26 00:30:57,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b44c629f/5ffcb4eb20e540799eada69b89ec2b07/FLAGde133179e [2020-10-26 00:30:58,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b44c629f/5ffcb4eb20e540799eada69b89ec2b07 [2020-10-26 00:30:58,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:30:58,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:30:58,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:30:58,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:30:58,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:30:58,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:30:58" (1/1) ... [2020-10-26 00:30:58,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42701653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58, skipping insertion in model container [2020-10-26 00:30:58,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:30:58" (1/1) ... [2020-10-26 00:30:58,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:30:58,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:30:58,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:30:58,596 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:30:58,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:30:58,764 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:30:58,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58 WrapperNode [2020-10-26 00:30:58,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:30:58,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:30:58,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:30:58,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:30:58,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58" (1/1) ... [2020-10-26 00:30:58,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58" (1/1) ... [2020-10-26 00:30:58,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:30:58,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:30:58,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:30:58,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:30:58,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58" (1/1) ... [2020-10-26 00:30:58,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58" (1/1) ... [2020-10-26 00:30:58,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58" (1/1) ... [2020-10-26 00:30:58,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58" (1/1) ... [2020-10-26 00:30:58,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58" (1/1) ... [2020-10-26 00:30:58,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58" (1/1) ... [2020-10-26 00:30:58,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58" (1/1) ... [2020-10-26 00:30:58,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:30:58,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:30:58,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:30:58,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:30:58,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58" (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 00:30:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:30:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:30:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:30:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:30:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:30:58,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:30:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:30:58,966 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:30:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:30:58,966 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:30:58,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:30:58,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:30:58,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:30:58,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:30:58,970 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 00:30:59,520 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:30:59,520 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:30:59,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:59 BoogieIcfgContainer [2020-10-26 00:30:59,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:30:59,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:30:59,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:30:59,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:30:59,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:30:58" (1/3) ... [2020-10-26 00:30:59,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2700e1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:30:59, skipping insertion in model container [2020-10-26 00:30:59,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58" (2/3) ... [2020-10-26 00:30:59,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2700e1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:30:59, skipping insertion in model container [2020-10-26 00:30:59,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:59" (3/3) ... [2020-10-26 00:30:59,533 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2020-10-26 00:30:59,547 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:30:59,547 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:30:59,553 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:30:59,554 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:30:59,594 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,594 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,594 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,595 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,595 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,595 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,596 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,596 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,596 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,597 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,597 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,597 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,598 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,598 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,598 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,598 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,599 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,599 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,602 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,602 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,603 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,603 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,610 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,610 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,614 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,614 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,614 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,615 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,619 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:30:59,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:30:59,661 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:30:59,661 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:30:59,662 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:30:59,662 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:30:59,662 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:30:59,662 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:30:59,662 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:30:59,662 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:30:59,676 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:30:59,679 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-26 00:30:59,682 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-26 00:30:59,685 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-26 00:30:59,734 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-26 00:30:59,735 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:30:59,739 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 59. Up to 2 conditions per place. [2020-10-26 00:30:59,743 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-26 00:31:02,527 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-26 00:31:03,098 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-26 00:31:03,257 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 00:31:03,491 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 00:31:03,684 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 00:31:03,691 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-10-26 00:31:03,691 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-10-26 00:31:03,698 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-26 00:31:03,725 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-26 00:31:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-26 00:31:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:31:03,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:03,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:03,736 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:03,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:03,743 INFO L82 PathProgramCache]: Analyzing trace with hash 911607414, now seen corresponding path program 1 times [2020-10-26 00:31:03,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:03,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198524854] [2020-10-26 00:31:03,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:03,963 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 00:31:03,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198524854] [2020-10-26 00:31:03,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:03,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:31:03,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109229227] [2020-10-26 00:31:03,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:31:03,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:03,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:31:03,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:31:03,996 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-26 00:31:04,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:04,046 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-26 00:31:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:31:04,048 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-26 00:31:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:04,072 INFO L225 Difference]: With dead ends: 274 [2020-10-26 00:31:04,072 INFO L226 Difference]: Without dead ends: 226 [2020-10-26 00:31:04,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:31:04,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-26 00:31:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-26 00:31:04,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-26 00:31:04,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-26 00:31:04,175 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-26 00:31:04,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:04,177 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-26 00:31:04,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:31:04,182 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-26 00:31:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:31:04,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:04,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:04,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:31:04,185 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:04,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:04,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1804948320, now seen corresponding path program 1 times [2020-10-26 00:31:04,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:04,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486634713] [2020-10-26 00:31:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:04,426 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 00:31:04,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486634713] [2020-10-26 00:31:04,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:04,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:31:04,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955294677] [2020-10-26 00:31:04,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:31:04,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:04,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:31:04,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:31:04,435 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-26 00:31:04,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:04,511 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-26 00:31:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:31:04,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-26 00:31:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:04,516 INFO L225 Difference]: With dead ends: 250 [2020-10-26 00:31:04,517 INFO L226 Difference]: Without dead ends: 202 [2020-10-26 00:31:04,518 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 00:31:04,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-26 00:31:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-26 00:31:04,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-26 00:31:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-26 00:31:04,549 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-26 00:31:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:04,549 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-26 00:31:04,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:31:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-26 00:31:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:31:04,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:04,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:04,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:31:04,552 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:04,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:04,553 INFO L82 PathProgramCache]: Analyzing trace with hash 834020007, now seen corresponding path program 1 times [2020-10-26 00:31:04,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:04,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517195941] [2020-10-26 00:31:04,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:04,704 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 00:31:04,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517195941] [2020-10-26 00:31:04,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:04,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:31:04,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758713849] [2020-10-26 00:31:04,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:31:04,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:04,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:31:04,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:31:04,708 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-10-26 00:31:04,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:04,810 INFO L93 Difference]: Finished difference Result 238 states and 627 transitions. [2020-10-26 00:31:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:31:04,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-26 00:31:04,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:04,813 INFO L225 Difference]: With dead ends: 238 [2020-10-26 00:31:04,813 INFO L226 Difference]: Without dead ends: 106 [2020-10-26 00:31:04,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:31:04,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-26 00:31:04,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-26 00:31:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-26 00:31:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2020-10-26 00:31:04,822 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 10 [2020-10-26 00:31:04,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:04,822 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2020-10-26 00:31:04,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:31:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2020-10-26 00:31:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:31:04,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:04,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:04,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:31:04,825 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:04,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:04,825 INFO L82 PathProgramCache]: Analyzing trace with hash 739020719, now seen corresponding path program 1 times [2020-10-26 00:31:04,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:04,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631417813] [2020-10-26 00:31:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:04,908 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 00:31:04,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631417813] [2020-10-26 00:31:04,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:04,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:31:04,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529113525] [2020-10-26 00:31:04,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:31:04,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:04,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:31:04,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:31:04,910 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2020-10-26 00:31:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:05,023 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-26 00:31:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:31:05,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-26 00:31:05,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:05,025 INFO L225 Difference]: With dead ends: 148 [2020-10-26 00:31:05,025 INFO L226 Difference]: Without dead ends: 76 [2020-10-26 00:31:05,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:31:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-26 00:31:05,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-26 00:31:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-26 00:31:05,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-10-26 00:31:05,031 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-10-26 00:31:05,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:05,031 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-10-26 00:31:05,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:31:05,031 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-10-26 00:31:05,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:31:05,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:05,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:05,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:31:05,033 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:05,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:05,034 INFO L82 PathProgramCache]: Analyzing trace with hash -254241509, now seen corresponding path program 1 times [2020-10-26 00:31:05,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:05,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937347322] [2020-10-26 00:31:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:05,107 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 00:31:05,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937347322] [2020-10-26 00:31:05,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:05,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:31:05,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714021142] [2020-10-26 00:31:05,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:31:05,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:05,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:31:05,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:31:05,110 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-10-26 00:31:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:05,164 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-10-26 00:31:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:31:05,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-26 00:31:05,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:05,166 INFO L225 Difference]: With dead ends: 87 [2020-10-26 00:31:05,166 INFO L226 Difference]: Without dead ends: 66 [2020-10-26 00:31:05,167 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 00:31:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-26 00:31:05,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-26 00:31:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-26 00:31:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-10-26 00:31:05,172 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-10-26 00:31:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:05,172 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-10-26 00:31:05,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:31:05,173 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-10-26 00:31:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:31:05,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:05,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:05,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:31:05,174 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:05,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:05,175 INFO L82 PathProgramCache]: Analyzing trace with hash 734665460, now seen corresponding path program 1 times [2020-10-26 00:31:05,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:05,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643323206] [2020-10-26 00:31:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:05,248 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 00:31:05,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643323206] [2020-10-26 00:31:05,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:05,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:31:05,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543835750] [2020-10-26 00:31:05,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:31:05,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:05,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:31:05,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:31:05,253 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2020-10-26 00:31:05,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:05,329 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-26 00:31:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:31:05,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-26 00:31:05,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:05,332 INFO L225 Difference]: With dead ends: 62 [2020-10-26 00:31:05,332 INFO L226 Difference]: Without dead ends: 47 [2020-10-26 00:31:05,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 00:31:05,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-26 00:31:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-26 00:31:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-26 00:31:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-26 00:31:05,337 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-26 00:31:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:05,337 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-26 00:31:05,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:31:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-26 00:31:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:31:05,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:05,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:05,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:31:05,344 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:05,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:05,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1299079363, now seen corresponding path program 1 times [2020-10-26 00:31:05,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:05,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41050791] [2020-10-26 00:31:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:05,470 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 00:31:05,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41050791] [2020-10-26 00:31:05,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:05,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 00:31:05,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534014876] [2020-10-26 00:31:05,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:31:05,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:05,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:31:05,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:31:05,472 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-10-26 00:31:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:05,575 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-10-26 00:31:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:31:05,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-26 00:31:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:05,577 INFO L225 Difference]: With dead ends: 40 [2020-10-26 00:31:05,577 INFO L226 Difference]: Without dead ends: 34 [2020-10-26 00:31:05,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 00:31:05,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-26 00:31:05,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-26 00:31:05,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-26 00:31:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-10-26 00:31:05,580 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-10-26 00:31:05,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:05,580 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-10-26 00:31:05,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:31:05,580 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-10-26 00:31:05,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:31:05,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:05,581 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 00:31:05,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:31:05,581 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:05,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:05,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1284707522, now seen corresponding path program 1 times [2020-10-26 00:31:05,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:05,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799948364] [2020-10-26 00:31:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:05,810 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 00:31:05,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799948364] [2020-10-26 00:31:05,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:05,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 00:31:05,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702062839] [2020-10-26 00:31:05,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 00:31:05,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:05,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 00:31:05,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:31:05,812 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 10 states. [2020-10-26 00:31:06,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:06,159 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2020-10-26 00:31:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 00:31:06,160 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-26 00:31:06,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:06,161 INFO L225 Difference]: With dead ends: 46 [2020-10-26 00:31:06,161 INFO L226 Difference]: Without dead ends: 28 [2020-10-26 00:31:06,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-26 00:31:06,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-26 00:31:06,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-26 00:31:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-26 00:31:06,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-26 00:31:06,163 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 17 [2020-10-26 00:31:06,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:06,164 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-26 00:31:06,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 00:31:06,164 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-26 00:31:06,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:31:06,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:06,165 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 00:31:06,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:31:06,165 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:06,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:06,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1493599964, now seen corresponding path program 2 times [2020-10-26 00:31:06,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:06,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011693662] [2020-10-26 00:31:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:06,432 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 00:31:06,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011693662] [2020-10-26 00:31:06,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:06,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 00:31:06,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444081313] [2020-10-26 00:31:06,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 00:31:06,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:06,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 00:31:06,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:31:06,434 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 10 states. [2020-10-26 00:31:06,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:06,619 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-26 00:31:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 00:31:06,620 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-26 00:31:06,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:06,620 INFO L225 Difference]: With dead ends: 27 [2020-10-26 00:31:06,620 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:31:06,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-26 00:31:06,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:31:06,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:31:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:31:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:31:06,622 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-26 00:31:06,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:06,623 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:31:06,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 00:31:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:31:06,623 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:31:06,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 00:31:06,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:31:06 BasicIcfg [2020-10-26 00:31:06,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:31:06,627 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:31:06,627 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:31:06,627 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:31:06,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:59" (3/4) ... [2020-10-26 00:31:06,632 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:31:06,639 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:31:06,639 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:31:06,639 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:31:06,644 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:31:06,645 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:31:06,645 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:31:06,645 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:31:06,689 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:31:06,689 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:31:06,691 INFO L168 Benchmark]: Toolchain (without parser) took 8611.80 ms. Allocated memory was 46.1 MB in the beginning and 121.6 MB in the end (delta: 75.5 MB). Free memory was 29.6 MB in the beginning and 73.2 MB in the end (delta: -43.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:06,691 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 37.7 MB. Free memory is still 20.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:31:06,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.50 ms. Allocated memory is still 46.1 MB. Free memory was 28.9 MB in the beginning and 28.5 MB in the end (delta: 425.6 kB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:06,692 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.19 ms. Allocated memory is still 46.1 MB. Free memory was 28.5 MB in the beginning and 26.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:06,693 INFO L168 Benchmark]: Boogie Preprocessor took 34.75 ms. Allocated memory is still 46.1 MB. Free memory was 26.6 MB in the beginning and 25.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:31:06,694 INFO L168 Benchmark]: RCFGBuilder took 658.33 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 38.0 MB in the end (delta: -12.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:06,694 INFO L168 Benchmark]: TraceAbstraction took 7101.88 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 37.5 MB in the beginning and 76.3 MB in the end (delta: -38.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:06,695 INFO L168 Benchmark]: Witness Printer took 61.80 ms. Allocated memory is still 121.6 MB. Free memory was 76.3 MB in the beginning and 73.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:06,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 37.7 MB. Free memory is still 20.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 674.50 ms. Allocated memory is still 46.1 MB. Free memory was 28.9 MB in the beginning and 28.5 MB in the end (delta: 425.6 kB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.19 ms. Allocated memory is still 46.1 MB. Free memory was 28.5 MB in the beginning and 26.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.75 ms. Allocated memory is still 46.1 MB. Free memory was 26.6 MB in the beginning and 25.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 658.33 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 38.0 MB in the end (delta: -12.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7101.88 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 37.5 MB in the beginning and 76.3 MB in the end (delta: -38.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. * Witness Printer took 61.80 ms. Allocated memory is still 121.6 MB. Free memory was 76.3 MB in the beginning and 73.2 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 949 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.0s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2462 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: 6.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 164 SDtfs, 184 SDslu, 379 SDs, 0 SdLazy, 325 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 5856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...