./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe009_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 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/safe009_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 def697b19d2b8dab28ca3954ee842bd8dccc1033 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:07:05,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:07:05,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:07:05,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:07:05,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:07:05,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:07:05,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:07:05,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:07:05,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:07:05,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:07:05,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:07:05,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:07:05,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:07:05,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:07:05,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:07:05,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:07:05,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:07:05,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:07:05,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:07:05,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:07:05,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:07:05,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:07:05,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:07:05,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:07:05,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:07:05,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:07:05,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:07:05,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:07:05,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:07:05,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:07:05,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:07:05,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:07:05,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:07:05,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:07:05,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:07:05,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:07:05,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:07:05,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:07:05,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:07:05,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:07:05,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:07:05,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:07:05,508 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:07:05,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:07:05,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:07:05,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:07:05,513 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:07:05,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:07:05,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:07:05,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:07:05,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:07:05,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:07:05,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:07:05,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:07:05,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:07:05,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:07:05,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:07:05,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:07:05,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:07:05,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:07:05,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:07:05,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:07:05,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:07:05,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:07:05,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:07:05,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:07:05,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:07:05,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:07:05,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:07:05,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:07:05,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:07:05,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> def697b19d2b8dab28ca3954ee842bd8dccc1033 [2020-12-02 12:07:05,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:07:05,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:07:05,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:07:05,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:07:05,967 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:07:05,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe009_tso.opt.i [2020-12-02 12:07:06,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26b0fa536/13c07328267c426faea33b8057d45863/FLAGc2001a5a5 [2020-12-02 12:07:06,774 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:07:06,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_tso.opt.i [2020-12-02 12:07:06,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26b0fa536/13c07328267c426faea33b8057d45863/FLAGc2001a5a5 [2020-12-02 12:07:06,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26b0fa536/13c07328267c426faea33b8057d45863 [2020-12-02 12:07:06,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:07:06,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:07:06,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:07:06,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:07:07,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:07:07,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:07:06" (1/1) ... [2020-12-02 12:07:07,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240ad54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07, skipping insertion in model container [2020-12-02 12:07:07,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:07:06" (1/1) ... [2020-12-02 12:07:07,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:07:07,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:07:07,271 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_tso.opt.i[949,962] [2020-12-02 12:07:07,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:07:07,462 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:07:07,487 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_tso.opt.i[949,962] [2020-12-02 12:07:07,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:07:07,628 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:07:07,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07 WrapperNode [2020-12-02 12:07:07,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:07:07,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:07:07,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:07:07,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:07:07,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07" (1/1) ... [2020-12-02 12:07:07,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07" (1/1) ... [2020-12-02 12:07:07,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:07:07,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:07:07,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:07:07,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:07:07,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07" (1/1) ... [2020-12-02 12:07:07,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07" (1/1) ... [2020-12-02 12:07:07,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07" (1/1) ... [2020-12-02 12:07:07,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07" (1/1) ... [2020-12-02 12:07:07,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07" (1/1) ... [2020-12-02 12:07:07,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07" (1/1) ... [2020-12-02 12:07:07,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07" (1/1) ... [2020-12-02 12:07:07,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:07:07,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:07:07,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:07:07,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:07:07,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07" (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 [2020-12-02 12:07:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:07:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:07:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:07:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:07:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:07:07,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:07:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:07:07,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:07:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:07:07,852 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:07:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:07:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:07:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:07:07,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:07:07,854 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:07:08,321 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:07:08,321 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:07:08,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:07:08 BoogieIcfgContainer [2020-12-02 12:07:08,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:07:08,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:07:08,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:07:08,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:07:08,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:07:06" (1/3) ... [2020-12-02 12:07:08,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d39178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:07:08, skipping insertion in model container [2020-12-02 12:07:08,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:07:07" (2/3) ... [2020-12-02 12:07:08,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d39178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:07:08, skipping insertion in model container [2020-12-02 12:07:08,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:07:08" (3/3) ... [2020-12-02 12:07:08,344 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.opt.i [2020-12-02 12:07:08,361 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:07:08,362 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:07:08,366 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:07:08,367 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:07:08,400 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,401 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,401 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,402 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,402 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,402 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,402 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,404 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,405 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,405 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,405 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,407 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,408 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,408 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,408 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,409 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,409 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,409 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,409 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,412 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,413 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,413 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,413 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,419 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,419 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,419 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,419 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,422 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,422 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:07:08,424 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:07:08,439 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:07:08,466 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:07:08,466 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:07:08,466 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:07:08,467 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:07:08,467 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:07:08,467 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:07:08,467 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:07:08,467 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:07:08,483 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:07:08,485 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-02 12:07:08,489 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-02 12:07:08,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-02 12:07:08,563 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-02 12:07:08,564 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:07:08,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-02 12:07:08,579 INFO L116 LiptonReduction]: Number of co-enabled transitions 1220 [2020-12-02 12:07:10,624 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-02 12:07:11,012 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:07:11,294 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:07:11,457 INFO L131 LiptonReduction]: Checked pairs total: 2044 [2020-12-02 12:07:11,457 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-02 12:07:11,464 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-02 12:07:11,490 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2020-12-02 12:07:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-12-02 12:07:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:07:11,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:11,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:11,503 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:11,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:11,510 INFO L82 PathProgramCache]: Analyzing trace with hash 622846231, now seen corresponding path program 1 times [2020-12-02 12:07:11,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:11,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834410460] [2020-12-02 12:07:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:11,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834410460] [2020-12-02 12:07:11,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:11,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:07:11,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095095650] [2020-12-02 12:07:11,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:07:11,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:11,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:07:11,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:07:11,755 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2020-12-02 12:07:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:11,787 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-12-02 12:07:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:07:11,789 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 12:07:11,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:11,807 INFO L225 Difference]: With dead ends: 282 [2020-12-02 12:07:11,807 INFO L226 Difference]: Without dead ends: 234 [2020-12-02 12:07:11,809 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 [2020-12-02 12:07:11,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-12-02 12:07:11,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-12-02 12:07:11,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-12-02 12:07:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2020-12-02 12:07:11,887 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2020-12-02 12:07:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:11,891 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2020-12-02 12:07:11,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:07:11,892 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2020-12-02 12:07:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:07:11,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:11,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:11,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:07:11,895 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:11,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:11,896 INFO L82 PathProgramCache]: Analyzing trace with hash 2128318799, now seen corresponding path program 1 times [2020-12-02 12:07:11,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:11,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589790148] [2020-12-02 12:07:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:12,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589790148] [2020-12-02 12:07:12,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:12,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:07:12,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892806721] [2020-12-02 12:07:12,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:07:12,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:12,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:07:12,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:12,109 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 4 states. [2020-12-02 12:07:12,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:12,173 INFO L93 Difference]: Finished difference Result 402 states and 1050 transitions. [2020-12-02 12:07:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:07:12,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:07:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:12,183 INFO L225 Difference]: With dead ends: 402 [2020-12-02 12:07:12,183 INFO L226 Difference]: Without dead ends: 308 [2020-12-02 12:07:12,185 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 [2020-12-02 12:07:12,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-12-02 12:07:12,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 264. [2020-12-02 12:07:12,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-12-02 12:07:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 712 transitions. [2020-12-02 12:07:12,227 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 712 transitions. Word has length 9 [2020-12-02 12:07:12,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:12,227 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 712 transitions. [2020-12-02 12:07:12,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:07:12,228 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 712 transitions. [2020-12-02 12:07:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:07:12,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:12,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:12,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:07:12,231 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:12,232 INFO L82 PathProgramCache]: Analyzing trace with hash 503221834, now seen corresponding path program 1 times [2020-12-02 12:07:12,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:12,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338334714] [2020-12-02 12:07:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:12,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338334714] [2020-12-02 12:07:12,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:12,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:07:12,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936284845] [2020-12-02 12:07:12,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:07:12,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:12,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:07:12,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:12,395 INFO L87 Difference]: Start difference. First operand 264 states and 712 transitions. Second operand 5 states. [2020-12-02 12:07:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:12,472 INFO L93 Difference]: Finished difference Result 345 states and 864 transitions. [2020-12-02 12:07:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:07:12,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:07:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:12,477 INFO L225 Difference]: With dead ends: 345 [2020-12-02 12:07:12,477 INFO L226 Difference]: Without dead ends: 278 [2020-12-02 12:07:12,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:07:12,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-12-02 12:07:12,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 246. [2020-12-02 12:07:12,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-12-02 12:07:12,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 648 transitions. [2020-12-02 12:07:12,500 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 648 transitions. Word has length 10 [2020-12-02 12:07:12,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:12,500 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 648 transitions. [2020-12-02 12:07:12,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:07:12,501 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 648 transitions. [2020-12-02 12:07:12,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:07:12,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:12,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:12,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:07:12,503 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:12,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:12,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1553300282, now seen corresponding path program 1 times [2020-12-02 12:07:12,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:12,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493182357] [2020-12-02 12:07:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:12,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493182357] [2020-12-02 12:07:12,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:12,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:07:12,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887845373] [2020-12-02 12:07:12,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:07:12,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:12,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:07:12,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:12,579 INFO L87 Difference]: Start difference. First operand 246 states and 648 transitions. Second operand 5 states. [2020-12-02 12:07:12,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:12,628 INFO L93 Difference]: Finished difference Result 298 states and 740 transitions. [2020-12-02 12:07:12,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:07:12,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:07:12,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:12,631 INFO L225 Difference]: With dead ends: 298 [2020-12-02 12:07:12,631 INFO L226 Difference]: Without dead ends: 254 [2020-12-02 12:07:12,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:07:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-12-02 12:07:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2020-12-02 12:07:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-02 12:07:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 576 transitions. [2020-12-02 12:07:12,645 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 576 transitions. Word has length 10 [2020-12-02 12:07:12,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:12,646 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 576 transitions. [2020-12-02 12:07:12,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:07:12,646 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 576 transitions. [2020-12-02 12:07:12,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:07:12,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:12,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:12,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:07:12,649 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:12,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:12,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1580065377, now seen corresponding path program 1 times [2020-12-02 12:07:12,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:12,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144981951] [2020-12-02 12:07:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:12,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144981951] [2020-12-02 12:07:12,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:12,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:07:12,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57983306] [2020-12-02 12:07:12,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:07:12,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:12,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:07:12,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:12,714 INFO L87 Difference]: Start difference. First operand 222 states and 576 transitions. Second operand 5 states. [2020-12-02 12:07:12,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:12,749 INFO L93 Difference]: Finished difference Result 266 states and 662 transitions. [2020-12-02 12:07:12,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:07:12,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-02 12:07:12,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:12,752 INFO L225 Difference]: With dead ends: 266 [2020-12-02 12:07:12,752 INFO L226 Difference]: Without dead ends: 242 [2020-12-02 12:07:12,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:07:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-12-02 12:07:12,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 210. [2020-12-02 12:07:12,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-02 12:07:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 538 transitions. [2020-12-02 12:07:12,762 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 538 transitions. Word has length 11 [2020-12-02 12:07:12,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:12,762 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 538 transitions. [2020-12-02 12:07:12,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:07:12,763 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 538 transitions. [2020-12-02 12:07:12,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:07:12,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:12,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:12,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:07:12,765 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:12,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:12,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1430850506, now seen corresponding path program 1 times [2020-12-02 12:07:12,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:12,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908329608] [2020-12-02 12:07:12,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:12,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908329608] [2020-12-02 12:07:12,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:12,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:07:12,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952120086] [2020-12-02 12:07:12,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:07:12,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:12,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:07:12,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:07:12,859 INFO L87 Difference]: Start difference. First operand 210 states and 538 transitions. Second operand 6 states. [2020-12-02 12:07:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:12,910 INFO L93 Difference]: Finished difference Result 300 states and 745 transitions. [2020-12-02 12:07:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:07:12,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-02 12:07:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:12,912 INFO L225 Difference]: With dead ends: 300 [2020-12-02 12:07:12,912 INFO L226 Difference]: Without dead ends: 180 [2020-12-02 12:07:12,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:07:12,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-02 12:07:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 156. [2020-12-02 12:07:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-02 12:07:12,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 390 transitions. [2020-12-02 12:07:12,920 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 390 transitions. Word has length 12 [2020-12-02 12:07:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:12,920 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 390 transitions. [2020-12-02 12:07:12,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:07:12,920 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 390 transitions. [2020-12-02 12:07:12,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:07:12,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:12,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:12,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:07:12,921 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:12,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:12,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1400741867, now seen corresponding path program 1 times [2020-12-02 12:07:12,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:12,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737345807] [2020-12-02 12:07:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:12,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737345807] [2020-12-02 12:07:12,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:12,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:07:12,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666756679] [2020-12-02 12:07:12,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:07:12,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:12,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:07:12,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:12,988 INFO L87 Difference]: Start difference. First operand 156 states and 390 transitions. Second operand 5 states. [2020-12-02 12:07:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:13,035 INFO L93 Difference]: Finished difference Result 254 states and 611 transitions. [2020-12-02 12:07:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:07:13,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:07:13,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:13,039 INFO L225 Difference]: With dead ends: 254 [2020-12-02 12:07:13,039 INFO L226 Difference]: Without dead ends: 144 [2020-12-02 12:07:13,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:07:13,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-02 12:07:13,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 120. [2020-12-02 12:07:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-02 12:07:13,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 282 transitions. [2020-12-02 12:07:13,046 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 282 transitions. Word has length 12 [2020-12-02 12:07:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:13,047 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 282 transitions. [2020-12-02 12:07:13,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:07:13,047 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 282 transitions. [2020-12-02 12:07:13,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:07:13,052 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:13,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:13,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:07:13,053 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:13,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:13,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1013965314, now seen corresponding path program 2 times [2020-12-02 12:07:13,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:13,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678683707] [2020-12-02 12:07:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:13,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678683707] [2020-12-02 12:07:13,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:13,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:07:13,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996268334] [2020-12-02 12:07:13,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:07:13,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:13,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:07:13,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:13,147 INFO L87 Difference]: Start difference. First operand 120 states and 282 transitions. Second operand 5 states. [2020-12-02 12:07:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:13,180 INFO L93 Difference]: Finished difference Result 134 states and 299 transitions. [2020-12-02 12:07:13,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:07:13,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:07:13,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:13,182 INFO L225 Difference]: With dead ends: 134 [2020-12-02 12:07:13,183 INFO L226 Difference]: Without dead ends: 56 [2020-12-02 12:07:13,183 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 [2020-12-02 12:07:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-02 12:07:13,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-02 12:07:13,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-02 12:07:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2020-12-02 12:07:13,187 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 12 [2020-12-02 12:07:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:13,187 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2020-12-02 12:07:13,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:07:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2020-12-02 12:07:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:07:13,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:13,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:13,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:07:13,189 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:13,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:13,189 INFO L82 PathProgramCache]: Analyzing trace with hash 776645246, now seen corresponding path program 1 times [2020-12-02 12:07:13,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:13,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232797324] [2020-12-02 12:07:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:13,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:13,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232797324] [2020-12-02 12:07:13,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:13,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:07:13,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526836177] [2020-12-02 12:07:13,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:07:13,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:13,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:07:13,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:07:13,298 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand 4 states. [2020-12-02 12:07:13,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:13,317 INFO L93 Difference]: Finished difference Result 58 states and 102 transitions. [2020-12-02 12:07:13,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:07:13,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:07:13,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:13,318 INFO L225 Difference]: With dead ends: 58 [2020-12-02 12:07:13,318 INFO L226 Difference]: Without dead ends: 45 [2020-12-02 12:07:13,319 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 [2020-12-02 12:07:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-02 12:07:13,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-02 12:07:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-02 12:07:13,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 78 transitions. [2020-12-02 12:07:13,322 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 78 transitions. Word has length 13 [2020-12-02 12:07:13,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:13,322 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 78 transitions. [2020-12-02 12:07:13,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:07:13,322 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 78 transitions. [2020-12-02 12:07:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:07:13,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:13,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:13,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:07:13,323 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:13,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:13,324 INFO L82 PathProgramCache]: Analyzing trace with hash -809970744, now seen corresponding path program 1 times [2020-12-02 12:07:13,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:13,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156916543] [2020-12-02 12:07:13,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:13,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156916543] [2020-12-02 12:07:13,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:13,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:07:13,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025131930] [2020-12-02 12:07:13,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:07:13,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:13,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:07:13,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:07:13,373 INFO L87 Difference]: Start difference. First operand 45 states and 78 transitions. Second operand 5 states. [2020-12-02 12:07:13,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:13,405 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-12-02 12:07:13,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:07:13,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:07:13,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:13,406 INFO L225 Difference]: With dead ends: 35 [2020-12-02 12:07:13,406 INFO L226 Difference]: Without dead ends: 27 [2020-12-02 12:07:13,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:07:13,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-02 12:07:13,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-02 12:07:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-02 12:07:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-12-02 12:07:13,409 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 14 [2020-12-02 12:07:13,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:13,409 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-12-02 12:07:13,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:07:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-12-02 12:07:13,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:07:13,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:07:13,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:07:13,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:07:13,411 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:07:13,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:07:13,412 INFO L82 PathProgramCache]: Analyzing trace with hash -145595207, now seen corresponding path program 1 times [2020-12-02 12:07:13,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:07:13,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567379890] [2020-12-02 12:07:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:07:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:07:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:07:13,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567379890] [2020-12-02 12:07:13,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:07:13,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:07:13,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582034761] [2020-12-02 12:07:13,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:07:13,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:07:13,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:07:13,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:07:13,485 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 6 states. [2020-12-02 12:07:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:07:13,517 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2020-12-02 12:07:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:07:13,518 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 12:07:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:07:13,519 INFO L225 Difference]: With dead ends: 21 [2020-12-02 12:07:13,519 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:07:13,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:07:13,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:07:13,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:07:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:07:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:07:13,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-02 12:07:13,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:07:13,522 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:07:13,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:07:13,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:07:13,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:07:13,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:07:13,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:07:13 BasicIcfg [2020-12-02 12:07:13,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:07:13,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:07:13,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:07:13,528 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:07:13,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:07:08" (3/4) ... [2020-12-02 12:07:13,535 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:07:13,545 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:07:13,545 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:07:13,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:07:13,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:07:13,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:07:13,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:07:13,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:07:13,637 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:07:13,637 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:07:13,638 INFO L168 Benchmark]: Toolchain (without parser) took 6653.15 ms. Allocated memory was 46.1 MB in the beginning and 127.9 MB in the end (delta: 81.8 MB). Free memory was 30.9 MB in the beginning and 93.4 MB in the end (delta: -62.5 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:13,643 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 46.1 MB. Free memory is still 29.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:07:13,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.32 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.6 MB in the beginning and 34.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:13,646 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.19 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 33.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:13,646 INFO L168 Benchmark]: Boogie Preprocessor took 28.98 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 31.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:07:13,646 INFO L168 Benchmark]: RCFGBuilder took 572.47 ms. Allocated memory is still 56.6 MB. Free memory was 31.4 MB in the beginning and 23.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:13,649 INFO L168 Benchmark]: TraceAbstraction took 5191.65 ms. Allocated memory was 56.6 MB in the beginning and 127.9 MB in the end (delta: 71.3 MB). Free memory was 37.1 MB in the beginning and 96.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:13,651 INFO L168 Benchmark]: Witness Printer took 109.13 ms. Allocated memory is still 127.9 MB. Free memory was 96.5 MB in the beginning and 93.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:07:13,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 46.1 MB. Free memory is still 29.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 633.32 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.6 MB in the beginning and 34.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.19 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 33.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.98 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 31.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 572.47 ms. Allocated memory is still 56.6 MB. Free memory was 31.4 MB in the beginning and 23.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5191.65 ms. Allocated memory was 56.6 MB in the beginning and 127.9 MB in the end (delta: 71.3 MB). Free memory was 37.1 MB in the beginning and 96.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Witness Printer took 109.13 ms. Allocated memory is still 127.9 MB. Free memory was 96.5 MB in the beginning and 93.4 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 799 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 81 PlacesBefore, 31 PlacesAfterwards, 73 TransitionsBefore, 22 TransitionsAfterwards, 1220 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2044 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 236 SDtfs, 261 SDslu, 362 SDs, 0 SdLazy, 136 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 188 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 5242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...