./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe025_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/safe025_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 2cb0904590711f61fe562550478334c4bfa7ca51 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:11:06,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:11:06,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:11:06,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:11:06,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:11:06,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:11:06,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:11:06,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:11:06,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:11:06,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:11:06,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:11:06,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:11:06,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:11:06,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:11:06,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:11:06,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:11:06,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:11:06,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:11:06,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:11:06,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:11:06,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:11:06,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:11:06,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:11:06,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:11:06,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:11:06,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:11:06,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:11:06,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:11:06,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:11:06,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:11:06,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:11:06,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:11:06,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:11:06,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:11:06,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:11:06,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:11:06,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:11:06,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:11:06,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:11:06,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:11:06,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:11:06,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:11:06,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:11:06,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:11:06,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:11:06,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:11:06,489 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:11:06,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:11:06,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:11:06,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:11:06,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:11:06,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:11:06,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:11:06,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:11:06,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:11:06,492 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:11:06,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:11:06,492 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:11:06,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:11:06,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:11:06,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:11:06,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:11:06,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:11:06,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:11:06,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:11:06,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:11:06,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:11:06,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:11:06,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:11:06,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:11:06,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:11:06,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cb0904590711f61fe562550478334c4bfa7ca51 [2020-12-02 12:11:06,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:11:07,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:11:07,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:11:07,024 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:11:07,026 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:11:07,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2020-12-02 12:11:07,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04c90cf4/9283c9119a3c4b118867f6834d2d58dd/FLAG16ea9af9a [2020-12-02 12:11:07,784 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:11:07,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2020-12-02 12:11:07,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04c90cf4/9283c9119a3c4b118867f6834d2d58dd/FLAG16ea9af9a [2020-12-02 12:11:08,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04c90cf4/9283c9119a3c4b118867f6834d2d58dd [2020-12-02 12:11:08,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:11:08,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:11:08,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:11:08,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:11:08,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:11:08,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:08" (1/1) ... [2020-12-02 12:11:08,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a239dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08, skipping insertion in model container [2020-12-02 12:11:08,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:08" (1/1) ... [2020-12-02 12:11:08,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:11:08,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:11:08,363 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/safe025_tso.opt.i[949,962] [2020-12-02 12:11:08,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:11:08,679 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:11:08,694 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/safe025_tso.opt.i[949,962] [2020-12-02 12:11:08,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:11:08,904 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:11:08,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08 WrapperNode [2020-12-02 12:11:08,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:11:08,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:11:08,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:11:08,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:11:08,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08" (1/1) ... [2020-12-02 12:11:08,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08" (1/1) ... [2020-12-02 12:11:08,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:11:08,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:11:08,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:11:08,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:11:08,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08" (1/1) ... [2020-12-02 12:11:08,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08" (1/1) ... [2020-12-02 12:11:08,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08" (1/1) ... [2020-12-02 12:11:08,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08" (1/1) ... [2020-12-02 12:11:08,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08" (1/1) ... [2020-12-02 12:11:08,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08" (1/1) ... [2020-12-02 12:11:08,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08" (1/1) ... [2020-12-02 12:11:08,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:11:08,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:11:08,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:11:08,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:11:08,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08" (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 12:11:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:11:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:11:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:11:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:11:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:11:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:11:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:11:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:11:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:11:09,114 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:11:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:11:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:11:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:11:09,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:11:09,117 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 12:11:09,607 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:11:09,608 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:11:09,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:09 BoogieIcfgContainer [2020-12-02 12:11:09,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:11:09,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:11:09,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:11:09,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:11:09,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:11:08" (1/3) ... [2020-12-02 12:11:09,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332a0b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:11:09, skipping insertion in model container [2020-12-02 12:11:09,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:08" (2/3) ... [2020-12-02 12:11:09,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332a0b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:11:09, skipping insertion in model container [2020-12-02 12:11:09,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:09" (3/3) ... [2020-12-02 12:11:09,624 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2020-12-02 12:11:09,650 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:11:09,651 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:11:09,655 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:11:09,658 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:11:09,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,718 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,718 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,718 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,719 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,719 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,719 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,720 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,720 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,720 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,721 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,722 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,722 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,723 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,723 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,723 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,724 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,724 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,726 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,727 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,729 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,730 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,730 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,730 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,731 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,732 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,733 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,743 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,748 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,749 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,751 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,751 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,751 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,752 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:09,753 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:11:09,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:11:09,791 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:11:09,792 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:11:09,792 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:11:09,792 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:11:09,792 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:11:09,792 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:11:09,792 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:11:09,793 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:11:09,806 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:11:09,809 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:11:09,812 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:11:09,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-02 12:11:09,876 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-02 12:11:09,876 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:11:09,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:11:09,891 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:11:12,181 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-02 12:11:12,370 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-02 12:11:12,853 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-12-02 12:11:13,292 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-02 12:11:13,627 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-02 12:11:13,777 INFO L131 LiptonReduction]: Checked pairs total: 2371 [2020-12-02 12:11:13,778 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-12-02 12:11:13,785 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-02 12:11:13,812 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-02 12:11:13,814 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-02 12:11:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:11:13,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:13,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:13,822 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:13,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:13,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1684989787, now seen corresponding path program 1 times [2020-12-02 12:11:13,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:13,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892106473] [2020-12-02 12:11:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:14,136 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 12:11:14,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892106473] [2020-12-02 12:11:14,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:14,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:11:14,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210547049] [2020-12-02 12:11:14,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:11:14,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:14,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:11:14,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:14,164 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-02 12:11:14,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:14,218 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-12-02 12:11:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:14,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-02 12:11:14,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:14,237 INFO L225 Difference]: With dead ends: 282 [2020-12-02 12:11:14,237 INFO L226 Difference]: Without dead ends: 218 [2020-12-02 12:11:14,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-02 12:11:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-12-02 12:11:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-02 12:11:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-12-02 12:11:14,310 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-12-02 12:11:14,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:14,312 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-12-02 12:11:14,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:11:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-12-02 12:11:14,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:11:14,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:14,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:14,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:11:14,315 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:14,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:14,316 INFO L82 PathProgramCache]: Analyzing trace with hash 695075092, now seen corresponding path program 1 times [2020-12-02 12:11:14,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:14,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010599263] [2020-12-02 12:11:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:14,420 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 12:11:14,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010599263] [2020-12-02 12:11:14,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:14,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:14,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228950260] [2020-12-02 12:11:14,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:11:14,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:14,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:11:14,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:14,424 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-12-02 12:11:14,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:14,456 INFO L93 Difference]: Finished difference Result 312 states and 816 transitions. [2020-12-02 12:11:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:14,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-02 12:11:14,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:14,461 INFO L225 Difference]: With dead ends: 312 [2020-12-02 12:11:14,461 INFO L226 Difference]: Without dead ends: 296 [2020-12-02 12:11:14,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:14,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-12-02 12:11:14,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 262. [2020-12-02 12:11:14,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-02 12:11:14,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 703 transitions. [2020-12-02 12:11:14,510 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 703 transitions. Word has length 9 [2020-12-02 12:11:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:14,512 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 703 transitions. [2020-12-02 12:11:14,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:11:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 703 transitions. [2020-12-02 12:11:14,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:11:14,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:14,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:14,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:11:14,518 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:14,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:14,521 INFO L82 PathProgramCache]: Analyzing trace with hash 72489286, now seen corresponding path program 1 times [2020-12-02 12:11:14,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:14,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345984060] [2020-12-02 12:11:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:14,604 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 12:11:14,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345984060] [2020-12-02 12:11:14,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:14,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:11:14,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617057318] [2020-12-02 12:11:14,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:11:14,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:14,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:11:14,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:14,607 INFO L87 Difference]: Start difference. First operand 262 states and 703 transitions. Second operand 3 states. [2020-12-02 12:11:14,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:14,617 INFO L93 Difference]: Finished difference Result 254 states and 677 transitions. [2020-12-02 12:11:14,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:14,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-02 12:11:14,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:14,622 INFO L225 Difference]: With dead ends: 254 [2020-12-02 12:11:14,622 INFO L226 Difference]: Without dead ends: 254 [2020-12-02 12:11:14,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:14,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-12-02 12:11:14,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 238. [2020-12-02 12:11:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-02 12:11:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 641 transitions. [2020-12-02 12:11:14,655 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 641 transitions. Word has length 10 [2020-12-02 12:11:14,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:14,656 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 641 transitions. [2020-12-02 12:11:14,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:11:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 641 transitions. [2020-12-02 12:11:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:11:14,660 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:14,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:14,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:11:14,661 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:14,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:14,662 INFO L82 PathProgramCache]: Analyzing trace with hash 72490526, now seen corresponding path program 1 times [2020-12-02 12:11:14,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:14,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108939930] [2020-12-02 12:11:14,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:14,744 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 12:11:14,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108939930] [2020-12-02 12:11:14,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:14,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:14,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062608696] [2020-12-02 12:11:14,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:11:14,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:14,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:11:14,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:14,754 INFO L87 Difference]: Start difference. First operand 238 states and 641 transitions. Second operand 3 states. [2020-12-02 12:11:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:14,774 INFO L93 Difference]: Finished difference Result 226 states and 600 transitions. [2020-12-02 12:11:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:14,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-02 12:11:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:14,779 INFO L225 Difference]: With dead ends: 226 [2020-12-02 12:11:14,779 INFO L226 Difference]: Without dead ends: 226 [2020-12-02 12:11:14,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:14,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-02 12:11:14,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 202. [2020-12-02 12:11:14,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-02 12:11:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 530 transitions. [2020-12-02 12:11:14,803 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 530 transitions. Word has length 10 [2020-12-02 12:11:14,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:14,806 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 530 transitions. [2020-12-02 12:11:14,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:11:14,807 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 530 transitions. [2020-12-02 12:11:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:11:14,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:14,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:14,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:11:14,811 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:14,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:14,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2036231076, now seen corresponding path program 1 times [2020-12-02 12:11:14,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:14,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601349213] [2020-12-02 12:11:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:14,898 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 12:11:14,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601349213] [2020-12-02 12:11:14,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:14,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:14,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629409753] [2020-12-02 12:11:14,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:14,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:14,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:14,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:14,902 INFO L87 Difference]: Start difference. First operand 202 states and 530 transitions. Second operand 4 states. [2020-12-02 12:11:14,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:14,940 INFO L93 Difference]: Finished difference Result 282 states and 728 transitions. [2020-12-02 12:11:14,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:14,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:11:14,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:14,942 INFO L225 Difference]: With dead ends: 282 [2020-12-02 12:11:14,943 INFO L226 Difference]: Without dead ends: 178 [2020-12-02 12:11:14,943 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 12:11:14,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-02 12:11:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-12-02 12:11:14,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-02 12:11:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-12-02 12:11:14,951 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2020-12-02 12:11:14,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:14,952 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-12-02 12:11:14,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:14,953 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-12-02 12:11:14,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:11:14,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:14,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:14,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:11:14,961 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:14,961 INFO L82 PathProgramCache]: Analyzing trace with hash -2047800276, now seen corresponding path program 2 times [2020-12-02 12:11:14,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:14,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014083526] [2020-12-02 12:11:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:15,089 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 12:11:15,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014083526] [2020-12-02 12:11:15,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:15,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:15,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632108212] [2020-12-02 12:11:15,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:15,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:15,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:15,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:15,101 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 4 states. [2020-12-02 12:11:15,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:15,153 INFO L93 Difference]: Finished difference Result 206 states and 481 transitions. [2020-12-02 12:11:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:15,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:11:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:15,155 INFO L225 Difference]: With dead ends: 206 [2020-12-02 12:11:15,156 INFO L226 Difference]: Without dead ends: 150 [2020-12-02 12:11:15,157 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 12:11:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-02 12:11:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-12-02 12:11:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-02 12:11:15,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 344 transitions. [2020-12-02 12:11:15,165 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 344 transitions. Word has length 11 [2020-12-02 12:11:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:15,166 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 344 transitions. [2020-12-02 12:11:15,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:15,166 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 344 transitions. [2020-12-02 12:11:15,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:11:15,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:15,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:15,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:11:15,168 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:15,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:15,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1362454825, now seen corresponding path program 1 times [2020-12-02 12:11:15,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:15,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552132438] [2020-12-02 12:11:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:15,300 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 12:11:15,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552132438] [2020-12-02 12:11:15,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:15,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:15,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667625249] [2020-12-02 12:11:15,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:15,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:15,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:15,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:15,304 INFO L87 Difference]: Start difference. First operand 150 states and 344 transitions. Second operand 5 states. [2020-12-02 12:11:15,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:15,349 INFO L93 Difference]: Finished difference Result 149 states and 319 transitions. [2020-12-02 12:11:15,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:15,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:11:15,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:15,351 INFO L225 Difference]: With dead ends: 149 [2020-12-02 12:11:15,352 INFO L226 Difference]: Without dead ends: 115 [2020-12-02 12:11:15,352 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 12:11:15,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-02 12:11:15,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-02 12:11:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-02 12:11:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 242 transitions. [2020-12-02 12:11:15,357 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 242 transitions. Word has length 12 [2020-12-02 12:11:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:15,358 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 242 transitions. [2020-12-02 12:11:15,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:15,358 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 242 transitions. [2020-12-02 12:11:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:11:15,359 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:15,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:15,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:11:15,360 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:15,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:15,360 INFO L82 PathProgramCache]: Analyzing trace with hash -646579048, now seen corresponding path program 1 times [2020-12-02 12:11:15,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:15,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947355507] [2020-12-02 12:11:15,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:15,484 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 12:11:15,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947355507] [2020-12-02 12:11:15,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:15,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:11:15,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531760720] [2020-12-02 12:11:15,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:11:15,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:15,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:11:15,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:15,491 INFO L87 Difference]: Start difference. First operand 115 states and 242 transitions. Second operand 6 states. [2020-12-02 12:11:15,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:15,561 INFO L93 Difference]: Finished difference Result 110 states and 230 transitions. [2020-12-02 12:11:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:11:15,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-02 12:11:15,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:15,563 INFO L225 Difference]: With dead ends: 110 [2020-12-02 12:11:15,563 INFO L226 Difference]: Without dead ends: 92 [2020-12-02 12:11:15,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 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 12:11:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-02 12:11:15,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-12-02 12:11:15,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-02 12:11:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 185 transitions. [2020-12-02 12:11:15,567 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 185 transitions. Word has length 14 [2020-12-02 12:11:15,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:15,568 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 185 transitions. [2020-12-02 12:11:15,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:11:15,568 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 185 transitions. [2020-12-02 12:11:15,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 12:11:15,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:15,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:15,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:11:15,569 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:15,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:15,570 INFO L82 PathProgramCache]: Analyzing trace with hash 390859497, now seen corresponding path program 1 times [2020-12-02 12:11:15,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:15,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148408716] [2020-12-02 12:11:15,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:15,622 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 12:11:15,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148408716] [2020-12-02 12:11:15,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:15,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:15,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611410457] [2020-12-02 12:11:15,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:15,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:15,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:15,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:15,625 INFO L87 Difference]: Start difference. First operand 88 states and 185 transitions. Second operand 4 states. [2020-12-02 12:11:15,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:15,664 INFO L93 Difference]: Finished difference Result 117 states and 238 transitions. [2020-12-02 12:11:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:15,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-02 12:11:15,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:15,666 INFO L225 Difference]: With dead ends: 117 [2020-12-02 12:11:15,666 INFO L226 Difference]: Without dead ends: 60 [2020-12-02 12:11:15,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-02 12:11:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-12-02 12:11:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-02 12:11:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 101 transitions. [2020-12-02 12:11:15,669 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 101 transitions. Word has length 17 [2020-12-02 12:11:15,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:15,670 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 101 transitions. [2020-12-02 12:11:15,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 101 transitions. [2020-12-02 12:11:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 12:11:15,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:15,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:15,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:11:15,671 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:15,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:15,672 INFO L82 PathProgramCache]: Analyzing trace with hash 321753769, now seen corresponding path program 2 times [2020-12-02 12:11:15,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:15,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762757396] [2020-12-02 12:11:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:15,712 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 12:11:15,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762757396] [2020-12-02 12:11:15,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:15,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:15,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145322113] [2020-12-02 12:11:15,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:15,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:15,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:15,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:15,715 INFO L87 Difference]: Start difference. First operand 56 states and 101 transitions. Second operand 4 states. [2020-12-02 12:11:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:15,732 INFO L93 Difference]: Finished difference Result 71 states and 125 transitions. [2020-12-02 12:11:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:15,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-02 12:11:15,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:15,733 INFO L225 Difference]: With dead ends: 71 [2020-12-02 12:11:15,734 INFO L226 Difference]: Without dead ends: 29 [2020-12-02 12:11:15,734 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 12:11:15,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-02 12:11:15,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-02 12:11:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-02 12:11:15,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2020-12-02 12:11:15,736 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 17 [2020-12-02 12:11:15,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:15,737 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2020-12-02 12:11:15,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:15,737 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2020-12-02 12:11:15,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 12:11:15,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:15,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:15,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:11:15,738 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:15,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:15,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1988858199, now seen corresponding path program 3 times [2020-12-02 12:11:15,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:15,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439323477] [2020-12-02 12:11:15,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:15,786 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 12:11:15,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439323477] [2020-12-02 12:11:15,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:15,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:15,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948072913] [2020-12-02 12:11:15,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:15,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:15,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:15,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:15,789 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand 4 states. [2020-12-02 12:11:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:15,804 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2020-12-02 12:11:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:15,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-02 12:11:15,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:15,805 INFO L225 Difference]: With dead ends: 28 [2020-12-02 12:11:15,805 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:11:15,805 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 12:11:15,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:11:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:11:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:11:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:11:15,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-02 12:11:15,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:15,807 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:11:15,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:15,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:11:15,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:11:15,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:11:15,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:11:15 BasicIcfg [2020-12-02 12:11:15,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:11:15,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:11:15,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:11:15,813 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:11:15,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:09" (3/4) ... [2020-12-02 12:11:15,823 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:11:15,831 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:11:15,832 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:11:15,832 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:11:15,837 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:11:15,838 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:11:15,838 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:11:15,838 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:11:15,884 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:11:15,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:11:15,885 INFO L168 Benchmark]: Toolchain (without parser) took 7795.11 ms. Allocated memory was 46.1 MB in the beginning and 136.3 MB in the end (delta: 90.2 MB). Free memory was 21.3 MB in the beginning and 103.1 MB in the end (delta: -81.8 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:15,886 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 46.1 MB. Free memory was 30.7 MB in the beginning and 30.7 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:11:15,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 811.58 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 21.1 MB in the beginning and 36.2 MB in the end (delta: -15.1 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:15,887 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.37 ms. Allocated memory is still 60.8 MB. Free memory was 36.2 MB in the beginning and 34.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:15,888 INFO L168 Benchmark]: Boogie Preprocessor took 32.73 ms. Allocated memory is still 60.8 MB. Free memory was 34.4 MB in the beginning and 32.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:11:15,889 INFO L168 Benchmark]: RCFGBuilder took 617.02 ms. Allocated memory is still 60.8 MB. Free memory was 32.9 MB in the beginning and 24.6 MB in the end (delta: 8.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:15,889 INFO L168 Benchmark]: TraceAbstraction took 6196.93 ms. Allocated memory was 60.8 MB in the beginning and 136.3 MB in the end (delta: 75.5 MB). Free memory was 24.3 MB in the beginning and 105.2 MB in the end (delta: -80.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:11:15,890 INFO L168 Benchmark]: Witness Printer took 71.18 ms. Allocated memory is still 136.3 MB. Free memory was 105.2 MB in the beginning and 103.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:15,893 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 46.1 MB. Free memory was 30.7 MB in the beginning and 30.7 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 811.58 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 21.1 MB in the beginning and 36.2 MB in the end (delta: -15.1 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.37 ms. Allocated memory is still 60.8 MB. Free memory was 36.2 MB in the beginning and 34.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.73 ms. Allocated memory is still 60.8 MB. Free memory was 34.4 MB in the beginning and 32.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 617.02 ms. Allocated memory is still 60.8 MB. Free memory was 32.9 MB in the beginning and 24.6 MB in the end (delta: 8.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6196.93 ms. Allocated memory was 60.8 MB in the beginning and 136.3 MB in the end (delta: 75.5 MB). Free memory was 24.3 MB in the beginning and 105.2 MB in the end (delta: -80.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 71.18 ms. Allocated memory is still 136.3 MB. Free memory was 105.2 MB in the beginning and 103.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 831 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 83 PlacesBefore, 31 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 2371 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 194 SDtfs, 225 SDslu, 183 SDs, 0 SdLazy, 101 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 82 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 4604 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...