./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe018_tso.oepc.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.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57837267e4cea353542afbab86ff217e99d6c163 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 00:30:56,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:30:56,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:30:56,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:30:56,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:30:56,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:30:56,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:30:56,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:30:56,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:30:56,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:30:56,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:30:56,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:30:56,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:30:56,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:30:56,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:30:56,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:30:56,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:30:56,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:30:56,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:30:56,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:30:56,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:30:56,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:30:56,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:30:56,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:30:56,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:30:56,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:30:56,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:30:56,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:30:56,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:30:56,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:30:56,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:30:56,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:30:56,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:30:56,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:30:56,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:30:56,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:30:56,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:30:56,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:30:56,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:30:56,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:30:56,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:30:56,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:30:56,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:30:56,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:30:56,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:30:56,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:30:56,349 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:30:56,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:30:56,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:30:56,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:30:56,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:30:56,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:30:56,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:30:56,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:30:56,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:30:56,352 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:30:56,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:30:56,352 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:30:56,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:30:56,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:30:56,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:30:56,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:30:56,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:30:56,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:30:56,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:30:56,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:30:56,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:30:56,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:30:56,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:30:56,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:30:56,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:30:56,355 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57837267e4cea353542afbab86ff217e99d6c163 [2020-10-26 00:30:56,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:30:56,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:30:56,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:30:56,810 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:30:56,811 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:30:56,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe018_tso.oepc.i [2020-10-26 00:30:56,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785f0a68e/21b4c66b2314438e9289f9dadc608efb/FLAG582f68d3a [2020-10-26 00:30:57,727 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:30:57,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_tso.oepc.i [2020-10-26 00:30:57,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785f0a68e/21b4c66b2314438e9289f9dadc608efb/FLAG582f68d3a [2020-10-26 00:30:57,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785f0a68e/21b4c66b2314438e9289f9dadc608efb [2020-10-26 00:30:57,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:30:57,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:30:57,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:30:57,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:30:57,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:30:57,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:30:57" (1/1) ... [2020-10-26 00:30:58,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69cd777f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:57, skipping insertion in model container [2020-10-26 00:30:58,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:30:57" (1/1) ... [2020-10-26 00:30:58,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:30:58,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:30:58,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:30:58,543 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:30:58,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:30:58,701 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:30:58,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:58 WrapperNode [2020-10-26 00:30:58,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:30:58,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:30:58,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:30:58,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:30:58,713 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 00:30:58,734 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 00:30:58,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:30:58,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:30:58,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:30:58,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:30:58,770 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 00:30:58,770 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 00:30:58,774 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 00:30:58,774 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 00:30:58,781 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 00:30:58,783 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 00:30:58,786 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 00:30:58,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:30:58,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:30:58,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:30:58,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:30:58,792 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 00:30:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:30:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:30:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:30:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:30:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:30:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:30:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:30:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:30:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:30:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:30:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:30:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:30:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:30:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:30:58,892 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 00:30:59,462 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:30:59,463 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:30:59,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:59 BoogieIcfgContainer [2020-10-26 00:30:59,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:30:59,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:30:59,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:30:59,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:30:59,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:30:57" (1/3) ... [2020-10-26 00:30:59,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19946c0a 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 00:30:59,480 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 00:30:59,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19946c0a 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 00:30:59,482 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 00:30:59,485 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.oepc.i [2020-10-26 00:30:59,499 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:30:59,499 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:30:59,505 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:30:59,506 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:30:59,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,561 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,562 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,565 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,565 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,565 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,565 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,568 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,568 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,577 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,577 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,577 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,590 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,590 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,597 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,598 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:59,598 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#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 00:30:59,603 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:30:59,621 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:30:59,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:30:59,663 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:30:59,664 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:30:59,664 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:30:59,664 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:30:59,664 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:30:59,665 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:30:59,665 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:30:59,687 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:30:59,690 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-26 00:30:59,694 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-26 00:30:59,697 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-26 00:30:59,768 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-26 00:30:59,768 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:30:59,773 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 00:30:59,776 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-26 00:31:01,271 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-10-26 00:31:01,610 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-26 00:31:01,970 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-26 00:31:02,080 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 00:31:02,239 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 00:31:02,364 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 00:31:02,372 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-10-26 00:31:02,372 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-10-26 00:31:02,380 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-26 00:31:02,408 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-26 00:31:02,410 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-26 00:31:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:31:02,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:02,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:02,420 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:02,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:02,427 INFO L82 PathProgramCache]: Analyzing trace with hash 911607414, now seen corresponding path program 1 times [2020-10-26 00:31:02,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:02,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84210162] [2020-10-26 00:31:02,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:02,633 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 00:31:02,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84210162] [2020-10-26 00:31:02,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:02,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:31:02,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253750915] [2020-10-26 00:31:02,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:31:02,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:02,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:31:02,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:31:02,668 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-26 00:31:02,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:02,723 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-26 00:31:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:31:02,726 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-26 00:31:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:02,750 INFO L225 Difference]: With dead ends: 274 [2020-10-26 00:31:02,751 INFO L226 Difference]: Without dead ends: 226 [2020-10-26 00:31:02,752 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 00:31:02,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-26 00:31:02,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-26 00:31:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-26 00:31:02,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-26 00:31:02,855 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-26 00:31:02,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:02,856 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-26 00:31:02,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:31:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-26 00:31:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:31:02,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:02,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:02,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:31:02,858 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:02,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1804948320, now seen corresponding path program 1 times [2020-10-26 00:31:02,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:02,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617146293] [2020-10-26 00:31:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:03,020 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 00:31:03,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617146293] [2020-10-26 00:31:03,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:03,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:31:03,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454411895] [2020-10-26 00:31:03,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:31:03,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:03,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:31:03,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:31:03,025 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-26 00:31:03,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:03,065 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-26 00:31:03,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:31:03,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-26 00:31:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:03,068 INFO L225 Difference]: With dead ends: 250 [2020-10-26 00:31:03,069 INFO L226 Difference]: Without dead ends: 202 [2020-10-26 00:31:03,070 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 00:31:03,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-26 00:31:03,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-26 00:31:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-26 00:31:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-26 00:31:03,087 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-26 00:31:03,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:03,088 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-26 00:31:03,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:31:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-26 00:31:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:31:03,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:03,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:03,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:31:03,091 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:03,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:03,091 INFO L82 PathProgramCache]: Analyzing trace with hash 834020007, now seen corresponding path program 1 times [2020-10-26 00:31:03,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:03,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657375836] [2020-10-26 00:31:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:03,259 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 00:31:03,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657375836] [2020-10-26 00:31:03,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:03,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:31:03,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385124675] [2020-10-26 00:31:03,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:31:03,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:03,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:31:03,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:31:03,262 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-10-26 00:31:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:03,340 INFO L93 Difference]: Finished difference Result 238 states and 627 transitions. [2020-10-26 00:31:03,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:31:03,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-26 00:31:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:03,342 INFO L225 Difference]: With dead ends: 238 [2020-10-26 00:31:03,342 INFO L226 Difference]: Without dead ends: 106 [2020-10-26 00:31:03,343 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 00:31:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-26 00:31:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-26 00:31:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-26 00:31:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2020-10-26 00:31:03,351 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 10 [2020-10-26 00:31:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:03,351 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2020-10-26 00:31:03,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:31:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2020-10-26 00:31:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:31:03,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:03,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:03,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:31:03,353 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:03,354 INFO L82 PathProgramCache]: Analyzing trace with hash 739020719, now seen corresponding path program 1 times [2020-10-26 00:31:03,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:03,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585859679] [2020-10-26 00:31:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:03,442 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 00:31:03,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585859679] [2020-10-26 00:31:03,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:03,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:31:03,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829060045] [2020-10-26 00:31:03,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:31:03,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:03,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:31:03,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:31:03,444 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2020-10-26 00:31:03,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:03,513 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-26 00:31:03,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:31:03,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-26 00:31:03,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:03,514 INFO L225 Difference]: With dead ends: 148 [2020-10-26 00:31:03,514 INFO L226 Difference]: Without dead ends: 76 [2020-10-26 00:31:03,515 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 00:31:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-26 00:31:03,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-26 00:31:03,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-26 00:31:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-10-26 00:31:03,527 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-10-26 00:31:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:03,528 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-10-26 00:31:03,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:31:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-10-26 00:31:03,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:31:03,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:03,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:03,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:31:03,529 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:03,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:03,530 INFO L82 PathProgramCache]: Analyzing trace with hash -254241509, now seen corresponding path program 1 times [2020-10-26 00:31:03,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:03,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869208447] [2020-10-26 00:31:03,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:03,586 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 00:31:03,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869208447] [2020-10-26 00:31:03,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:03,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:31:03,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090017552] [2020-10-26 00:31:03,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:31:03,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:03,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:31:03,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:31:03,589 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-10-26 00:31:03,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:03,628 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-10-26 00:31:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:31:03,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-26 00:31:03,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:03,629 INFO L225 Difference]: With dead ends: 87 [2020-10-26 00:31:03,629 INFO L226 Difference]: Without dead ends: 66 [2020-10-26 00:31:03,629 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 00:31:03,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-26 00:31:03,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-26 00:31:03,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-26 00:31:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-10-26 00:31:03,633 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-10-26 00:31:03,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:03,633 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-10-26 00:31:03,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:31:03,633 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-10-26 00:31:03,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:31:03,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:03,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:03,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:31:03,635 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:03,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:03,635 INFO L82 PathProgramCache]: Analyzing trace with hash 734665460, now seen corresponding path program 1 times [2020-10-26 00:31:03,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:03,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819312079] [2020-10-26 00:31:03,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:03,695 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 00:31:03,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819312079] [2020-10-26 00:31:03,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:03,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:31:03,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002961058] [2020-10-26 00:31:03,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:31:03,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:03,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:31:03,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:31:03,697 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2020-10-26 00:31:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:03,756 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-26 00:31:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:31:03,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-26 00:31:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:03,758 INFO L225 Difference]: With dead ends: 62 [2020-10-26 00:31:03,758 INFO L226 Difference]: Without dead ends: 47 [2020-10-26 00:31:03,758 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 00:31:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-26 00:31:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-26 00:31:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-26 00:31:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-26 00:31:03,766 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-26 00:31:03,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:03,767 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-26 00:31:03,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:31:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-26 00:31:03,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:31:03,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:03,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:31:03,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:31:03,768 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:03,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:03,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1299079363, now seen corresponding path program 1 times [2020-10-26 00:31:03,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:03,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9931722] [2020-10-26 00:31:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:03,888 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 00:31:03,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9931722] [2020-10-26 00:31:03,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:03,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 00:31:03,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704844569] [2020-10-26 00:31:03,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:31:03,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:03,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:31:03,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:31:03,890 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-10-26 00:31:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:03,954 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-10-26 00:31:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:31:03,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-26 00:31:03,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:03,955 INFO L225 Difference]: With dead ends: 40 [2020-10-26 00:31:03,955 INFO L226 Difference]: Without dead ends: 34 [2020-10-26 00:31:03,956 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 00:31:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-26 00:31:03,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-26 00:31:03,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-26 00:31:03,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-10-26 00:31:03,959 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-10-26 00:31:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:03,960 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-10-26 00:31:03,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:31:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-10-26 00:31:03,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:31:03,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:03,961 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 00:31:03,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:31:03,961 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:03,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:03,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1284707522, now seen corresponding path program 1 times [2020-10-26 00:31:03,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:03,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363198921] [2020-10-26 00:31:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:04,203 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 00:31:04,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363198921] [2020-10-26 00:31:04,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:04,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 00:31:04,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439248405] [2020-10-26 00:31:04,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 00:31:04,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:04,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 00:31:04,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:31:04,207 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 10 states. [2020-10-26 00:31:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:04,456 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2020-10-26 00:31:04,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 00:31:04,457 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-26 00:31:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:04,458 INFO L225 Difference]: With dead ends: 46 [2020-10-26 00:31:04,458 INFO L226 Difference]: Without dead ends: 28 [2020-10-26 00:31:04,459 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 00:31:04,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-26 00:31:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-26 00:31:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-26 00:31:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-26 00:31:04,461 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 17 [2020-10-26 00:31:04,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:04,462 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-26 00:31:04,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 00:31:04,462 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-26 00:31:04,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:31:04,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:31:04,463 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 00:31:04,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:31:04,463 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:31:04,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:31:04,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1493599964, now seen corresponding path program 2 times [2020-10-26 00:31:04,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:31:04,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154150324] [2020-10-26 00:31:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:31:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:31:04,648 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 00:31:04,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154150324] [2020-10-26 00:31:04,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:31:04,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 00:31:04,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736275128] [2020-10-26 00:31:04,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 00:31:04,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:31:04,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 00:31:04,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:31:04,651 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 10 states. [2020-10-26 00:31:04,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:31:04,755 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-26 00:31:04,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 00:31:04,755 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-26 00:31:04,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:31:04,755 INFO L225 Difference]: With dead ends: 27 [2020-10-26 00:31:04,755 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:31:04,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-26 00:31:04,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:31:04,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:31:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:31:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:31:04,757 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-26 00:31:04,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:31:04,757 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:31:04,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 00:31:04,757 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:31:04,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:31:04,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 00:31:04,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:31:04 BasicIcfg [2020-10-26 00:31:04,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:31:04,763 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:31:04,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:31:04,763 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:31:04,764 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 00:31:04,768 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:31:04,777 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:31:04,777 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:31:04,777 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:31:04,783 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:31:04,783 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:31:04,784 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:31:04,784 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:31:04,830 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:31:04,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:31:04,832 INFO L168 Benchmark]: Toolchain (without parser) took 6851.94 ms. Allocated memory was 46.1 MB in the beginning and 100.7 MB in the end (delta: 54.5 MB). Free memory was 29.7 MB in the beginning and 59.0 MB in the end (delta: -29.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:04,833 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 37.7 MB. Free memory was 20.6 MB in the beginning and 20.5 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:31:04,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.24 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 39.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:04,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.63 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 37.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:04,835 INFO L168 Benchmark]: Boogie Preprocessor took 30.00 ms. Allocated memory is still 56.6 MB. Free memory was 37.5 MB in the beginning and 36.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:31:04,835 INFO L168 Benchmark]: RCFGBuilder took 678.88 ms. Allocated memory is still 56.6 MB. Free memory was 36.2 MB in the beginning and 28.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:04,836 INFO L168 Benchmark]: TraceAbstraction took 5291.00 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 27.7 MB in the beginning and 61.1 MB in the end (delta: -33.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:04,837 INFO L168 Benchmark]: Witness Printer took 67.39 ms. Allocated memory is still 100.7 MB. Free memory was 61.1 MB in the beginning and 59.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:31:04,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 37.7 MB. Free memory was 20.6 MB in the beginning and 20.5 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 713.24 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 39.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.63 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 37.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.00 ms. Allocated memory is still 56.6 MB. Free memory was 37.5 MB in the beginning and 36.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 678.88 ms. Allocated memory is still 56.6 MB. Free memory was 36.2 MB in the beginning and 28.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5291.00 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 27.7 MB in the beginning and 61.1 MB in the end (delta: -33.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Witness Printer took 67.39 ms. Allocated memory is still 100.7 MB. Free memory was 61.1 MB in the beginning and 59.0 MB in the end (delta: 2.1 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: 0.3s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.6s, 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: 5.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 164 SDtfs, 184 SDslu, 379 SDs, 0 SdLazy, 325 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s 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, 0.8s 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...