./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/triangular-2.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 c067ce4a8345a015d1d52a029a059372b956ca8b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 02:45:00,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 02:45:00,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 02:45:00,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 02:45:00,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 02:45:00,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 02:45:00,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 02:45:00,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 02:45:00,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 02:45:00,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 02:45:00,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 02:45:00,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 02:45:00,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 02:45:00,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 02:45:00,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 02:45:00,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 02:45:00,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 02:45:00,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 02:45:00,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 02:45:00,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 02:45:01,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 02:45:01,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 02:45:01,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 02:45:01,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 02:45:01,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 02:45:01,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 02:45:01,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 02:45:01,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 02:45:01,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 02:45:01,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 02:45:01,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 02:45:01,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 02:45:01,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 02:45:01,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 02:45:01,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 02:45:01,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 02:45:01,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 02:45:01,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 02:45:01,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 02:45:01,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 02:45:01,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 02:45:01,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 02:45:01,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 02:45:01,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 02:45:01,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 02:45:01,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 02:45:01,067 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 02:45:01,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 02:45:01,068 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 02:45:01,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 02:45:01,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 02:45:01,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 02:45:01,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 02:45:01,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 02:45:01,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 02:45:01,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 02:45:01,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 02:45:01,071 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 02:45:01,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 02:45:01,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 02:45:01,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 02:45:01,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 02:45:01,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 02:45:01,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:45:01,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 02:45:01,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 02:45:01,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 02:45:01,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 02:45:01,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 02:45:01,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 02:45:01,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 02:45:01,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> c067ce4a8345a015d1d52a029a059372b956ca8b [2020-10-20 02:45:01,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 02:45:01,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 02:45:01,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 02:45:01,291 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 02:45:01,292 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 02:45:01,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-2.i [2020-10-20 02:45:01,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79e2bfbb7/5d1557744d684a1381b50832ffe4ebfe/FLAGf7fe5290c [2020-10-20 02:45:01,922 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 02:45:01,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-2.i [2020-10-20 02:45:01,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79e2bfbb7/5d1557744d684a1381b50832ffe4ebfe/FLAGf7fe5290c [2020-10-20 02:45:02,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79e2bfbb7/5d1557744d684a1381b50832ffe4ebfe [2020-10-20 02:45:02,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 02:45:02,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 02:45:02,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 02:45:02,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 02:45:02,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 02:45:02,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:45:02" (1/1) ... [2020-10-20 02:45:02,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e667a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02, skipping insertion in model container [2020-10-20 02:45:02,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:45:02" (1/1) ... [2020-10-20 02:45:02,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 02:45:02,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 02:45:02,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:45:02,801 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 02:45:02,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:45:02,948 INFO L208 MainTranslator]: Completed translation [2020-10-20 02:45:02,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02 WrapperNode [2020-10-20 02:45:02,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 02:45:02,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 02:45:02,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 02:45:02,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 02:45:02,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02" (1/1) ... [2020-10-20 02:45:02,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02" (1/1) ... [2020-10-20 02:45:03,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 02:45:03,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 02:45:03,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 02:45:03,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 02:45:03,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02" (1/1) ... [2020-10-20 02:45:03,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02" (1/1) ... [2020-10-20 02:45:03,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02" (1/1) ... [2020-10-20 02:45:03,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02" (1/1) ... [2020-10-20 02:45:03,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02" (1/1) ... [2020-10-20 02:45:03,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02" (1/1) ... [2020-10-20 02:45:03,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02" (1/1) ... [2020-10-20 02:45:03,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 02:45:03,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 02:45:03,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 02:45:03,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 02:45:03,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:45:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-20 02:45:03,111 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-20 02:45:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-20 02:45:03,111 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-20 02:45:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 02:45:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 02:45:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 02:45:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 02:45:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 02:45:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 02:45:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 02:45:03,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 02:45:03,115 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 02:45:03,444 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 02:45:03,444 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 02:45:03,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:03 BoogieIcfgContainer [2020-10-20 02:45:03,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 02:45:03,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 02:45:03,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 02:45:03,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 02:45:03,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 02:45:02" (1/3) ... [2020-10-20 02:45:03,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179fd805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:45:03, skipping insertion in model container [2020-10-20 02:45:03,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:02" (2/3) ... [2020-10-20 02:45:03,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179fd805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:45:03, skipping insertion in model container [2020-10-20 02:45:03,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:03" (3/3) ... [2020-10-20 02:45:03,457 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2020-10-20 02:45:03,470 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 02:45:03,470 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 02:45:03,486 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 02:45:03,488 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 02:45:03,540 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,541 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,541 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,541 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,542 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,542 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,543 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,543 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,543 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,544 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,544 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,545 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,545 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,545 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,546 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,546 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,546 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,547 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,547 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,547 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,548 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,549 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,549 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,549 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,550 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,550 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,554 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,554 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,555 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,555 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,555 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,555 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,566 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,566 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,566 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,566 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,567 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,567 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:03,574 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 02:45:03,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 02:45:03,608 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 02:45:03,609 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 02:45:03,609 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 02:45:03,609 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 02:45:03,609 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 02:45:03,609 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 02:45:03,609 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 02:45:03,609 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 02:45:03,621 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 02:45:03,624 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 64 transitions, 138 flow [2020-10-20 02:45:03,626 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 64 transitions, 138 flow [2020-10-20 02:45:03,628 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 138 flow [2020-10-20 02:45:03,668 INFO L129 PetriNetUnfolder]: 6/62 cut-off events. [2020-10-20 02:45:03,668 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 02:45:03,675 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 6/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-20 02:45:03,678 INFO L117 LiptonReduction]: Number of co-enabled transitions 1144 [2020-10-20 02:45:05,052 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-20 02:45:05,157 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-20 02:45:05,571 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-20 02:45:05,691 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-20 02:45:05,755 INFO L132 LiptonReduction]: Checked pairs total: 1187 [2020-10-20 02:45:05,755 INFO L134 LiptonReduction]: Total number of compositions: 62 [2020-10-20 02:45:05,763 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-20 02:45:05,772 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-20 02:45:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-20 02:45:05,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 02:45:05,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:05,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 02:45:05,783 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:05,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:05,788 INFO L82 PathProgramCache]: Analyzing trace with hash -805875314, now seen corresponding path program 1 times [2020-10-20 02:45:05,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:05,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779070537] [2020-10-20 02:45:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:06,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779070537] [2020-10-20 02:45:06,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:06,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:45:06,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116178301] [2020-10-20 02:45:06,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 02:45:06,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:06,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 02:45:06,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:45:06,075 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-20 02:45:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:06,162 INFO L93 Difference]: Finished difference Result 75 states and 190 transitions. [2020-10-20 02:45:06,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 02:45:06,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-20 02:45:06,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:06,179 INFO L225 Difference]: With dead ends: 75 [2020-10-20 02:45:06,180 INFO L226 Difference]: Without dead ends: 42 [2020-10-20 02:45:06,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 02:45:06,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-20 02:45:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-20 02:45:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-20 02:45:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 98 transitions. [2020-10-20 02:45:06,225 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 98 transitions. Word has length 6 [2020-10-20 02:45:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:06,226 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 98 transitions. [2020-10-20 02:45:06,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 02:45:06,227 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 98 transitions. [2020-10-20 02:45:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 02:45:06,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:06,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:06,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 02:45:06,229 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:06,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:06,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1351909113, now seen corresponding path program 1 times [2020-10-20 02:45:06,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:06,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970692720] [2020-10-20 02:45:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:06,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970692720] [2020-10-20 02:45:06,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:06,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 02:45:06,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987254576] [2020-10-20 02:45:06,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 02:45:06,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:06,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 02:45:06,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 02:45:06,313 INFO L87 Difference]: Start difference. First operand 42 states and 98 transitions. Second operand 5 states. [2020-10-20 02:45:06,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:06,345 INFO L93 Difference]: Finished difference Result 56 states and 130 transitions. [2020-10-20 02:45:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 02:45:06,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-20 02:45:06,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:06,361 INFO L225 Difference]: With dead ends: 56 [2020-10-20 02:45:06,361 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 02:45:06,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-20 02:45:06,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 02:45:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-10-20 02:45:06,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-20 02:45:06,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 100 transitions. [2020-10-20 02:45:06,370 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 100 transitions. Word has length 8 [2020-10-20 02:45:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:06,372 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 100 transitions. [2020-10-20 02:45:06,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 02:45:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 100 transitions. [2020-10-20 02:45:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 02:45:06,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:06,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:06,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 02:45:06,374 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:06,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:06,375 INFO L82 PathProgramCache]: Analyzing trace with hash 2021583950, now seen corresponding path program 1 times [2020-10-20 02:45:06,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:06,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790015008] [2020-10-20 02:45:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:06,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790015008] [2020-10-20 02:45:06,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:06,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 02:45:06,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996429516] [2020-10-20 02:45:06,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 02:45:06,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:06,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 02:45:06,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 02:45:06,457 INFO L87 Difference]: Start difference. First operand 42 states and 100 transitions. Second operand 6 states. [2020-10-20 02:45:06,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:06,531 INFO L93 Difference]: Finished difference Result 54 states and 124 transitions. [2020-10-20 02:45:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 02:45:06,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 02:45:06,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:06,533 INFO L225 Difference]: With dead ends: 54 [2020-10-20 02:45:06,533 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 02:45:06,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-20 02:45:06,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 02:45:06,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-20 02:45:06,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 02:45:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 106 transitions. [2020-10-20 02:45:06,541 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 106 transitions. Word has length 10 [2020-10-20 02:45:06,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:06,542 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 106 transitions. [2020-10-20 02:45:06,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 02:45:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 106 transitions. [2020-10-20 02:45:06,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 02:45:06,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:06,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:06,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 02:45:06,544 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:06,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:06,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2101929440, now seen corresponding path program 2 times [2020-10-20 02:45:06,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:06,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745805879] [2020-10-20 02:45:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:06,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745805879] [2020-10-20 02:45:06,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:06,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 02:45:06,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569961926] [2020-10-20 02:45:06,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 02:45:06,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:06,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 02:45:06,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 02:45:06,618 INFO L87 Difference]: Start difference. First operand 45 states and 106 transitions. Second operand 6 states. [2020-10-20 02:45:06,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:06,699 INFO L93 Difference]: Finished difference Result 59 states and 138 transitions. [2020-10-20 02:45:06,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 02:45:06,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 02:45:06,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:06,701 INFO L225 Difference]: With dead ends: 59 [2020-10-20 02:45:06,701 INFO L226 Difference]: Without dead ends: 53 [2020-10-20 02:45:06,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-20 02:45:06,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-20 02:45:06,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-10-20 02:45:06,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 02:45:06,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 96 transitions. [2020-10-20 02:45:06,708 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 96 transitions. Word has length 10 [2020-10-20 02:45:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:06,708 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 96 transitions. [2020-10-20 02:45:06,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 02:45:06,709 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 96 transitions. [2020-10-20 02:45:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 02:45:06,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:06,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:06,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 02:45:06,710 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:06,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:06,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2082353870, now seen corresponding path program 3 times [2020-10-20 02:45:06,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:06,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556196011] [2020-10-20 02:45:06,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:06,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556196011] [2020-10-20 02:45:06,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:06,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 02:45:06,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616874805] [2020-10-20 02:45:06,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 02:45:06,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:06,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 02:45:06,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 02:45:06,765 INFO L87 Difference]: Start difference. First operand 41 states and 96 transitions. Second operand 6 states. [2020-10-20 02:45:06,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:06,840 INFO L93 Difference]: Finished difference Result 65 states and 152 transitions. [2020-10-20 02:45:06,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 02:45:06,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 02:45:06,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:06,842 INFO L225 Difference]: With dead ends: 65 [2020-10-20 02:45:06,842 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 02:45:06,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-20 02:45:06,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 02:45:06,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2020-10-20 02:45:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 02:45:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 99 transitions. [2020-10-20 02:45:06,850 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 99 transitions. Word has length 10 [2020-10-20 02:45:06,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:06,850 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 99 transitions. [2020-10-20 02:45:06,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 02:45:06,851 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 99 transitions. [2020-10-20 02:45:06,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 02:45:06,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:06,852 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:06,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 02:45:06,852 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:06,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:06,852 INFO L82 PathProgramCache]: Analyzing trace with hash 735328415, now seen corresponding path program 4 times [2020-10-20 02:45:06,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:06,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939034961] [2020-10-20 02:45:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:06,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939034961] [2020-10-20 02:45:06,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735091304] [2020-10-20 02:45:06,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:06,995 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 02:45:06,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:06,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 02:45:07,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:07,045 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 02:45:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:07,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:07,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-20 02:45:07,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350980980] [2020-10-20 02:45:07,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 02:45:07,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:07,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 02:45:07,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 02:45:07,066 INFO L87 Difference]: Start difference. First operand 41 states and 99 transitions. Second operand 8 states. [2020-10-20 02:45:07,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:07,222 INFO L93 Difference]: Finished difference Result 63 states and 147 transitions. [2020-10-20 02:45:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 02:45:07,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-20 02:45:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:07,230 INFO L225 Difference]: With dead ends: 63 [2020-10-20 02:45:07,230 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 02:45:07,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-20 02:45:07,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 02:45:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2020-10-20 02:45:07,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 02:45:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 87 transitions. [2020-10-20 02:45:07,242 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 87 transitions. Word has length 11 [2020-10-20 02:45:07,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:07,242 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 87 transitions. [2020-10-20 02:45:07,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 02:45:07,242 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 87 transitions. [2020-10-20 02:45:07,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 02:45:07,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:07,243 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:07,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-20 02:45:07,458 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:07,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:07,459 INFO L82 PathProgramCache]: Analyzing trace with hash 128488628, now seen corresponding path program 5 times [2020-10-20 02:45:07,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:07,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169437913] [2020-10-20 02:45:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:07,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169437913] [2020-10-20 02:45:07,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898346100] [2020-10-20 02:45:07,571 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:07,625 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 02:45:07,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:07,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 02:45:07,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:07,648 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 02:45:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:07,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:07,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-20 02:45:07,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13693505] [2020-10-20 02:45:07,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 02:45:07,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:07,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 02:45:07,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-20 02:45:07,669 INFO L87 Difference]: Start difference. First operand 37 states and 87 transitions. Second operand 8 states. [2020-10-20 02:45:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:07,794 INFO L93 Difference]: Finished difference Result 56 states and 133 transitions. [2020-10-20 02:45:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 02:45:07,794 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-20 02:45:07,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:07,795 INFO L225 Difference]: With dead ends: 56 [2020-10-20 02:45:07,796 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 02:45:07,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-20 02:45:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 02:45:07,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2020-10-20 02:45:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 02:45:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 105 transitions. [2020-10-20 02:45:07,801 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 105 transitions. Word has length 11 [2020-10-20 02:45:07,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:07,802 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 105 transitions. [2020-10-20 02:45:07,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 02:45:07,802 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 105 transitions. [2020-10-20 02:45:07,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 02:45:07,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:07,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:08,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:08,012 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:08,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:08,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1416964401, now seen corresponding path program 6 times [2020-10-20 02:45:08,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:08,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458848496] [2020-10-20 02:45:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:08,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458848496] [2020-10-20 02:45:08,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697362884] [2020-10-20 02:45:08,116 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:08,177 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-20 02:45:08,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:08,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 02:45:08,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:08,183 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 02:45:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:08,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:08,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 02:45:08,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539202800] [2020-10-20 02:45:08,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 02:45:08,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:08,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 02:45:08,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 02:45:08,198 INFO L87 Difference]: Start difference. First operand 43 states and 105 transitions. Second operand 8 states. [2020-10-20 02:45:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:08,323 INFO L93 Difference]: Finished difference Result 56 states and 131 transitions. [2020-10-20 02:45:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 02:45:08,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-20 02:45:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:08,325 INFO L225 Difference]: With dead ends: 56 [2020-10-20 02:45:08,325 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 02:45:08,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-20 02:45:08,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 02:45:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-10-20 02:45:08,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-20 02:45:08,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 111 transitions. [2020-10-20 02:45:08,338 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 111 transitions. Word has length 12 [2020-10-20 02:45:08,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:08,340 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 111 transitions. [2020-10-20 02:45:08,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 02:45:08,340 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 111 transitions. [2020-10-20 02:45:08,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 02:45:08,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:08,341 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:08,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:08,543 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:08,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:08,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1320372483, now seen corresponding path program 7 times [2020-10-20 02:45:08,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:08,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144812121] [2020-10-20 02:45:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:08,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144812121] [2020-10-20 02:45:08,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841023339] [2020-10-20 02:45:08,613 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:08,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 02:45:08,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:08,683 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 02:45:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:08,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:08,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-20 02:45:08,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979816009] [2020-10-20 02:45:08,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 02:45:08,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:08,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 02:45:08,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 02:45:08,697 INFO L87 Difference]: Start difference. First operand 46 states and 111 transitions. Second operand 9 states. [2020-10-20 02:45:08,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:08,893 INFO L93 Difference]: Finished difference Result 63 states and 149 transitions. [2020-10-20 02:45:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 02:45:08,894 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-20 02:45:08,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:08,895 INFO L225 Difference]: With dead ends: 63 [2020-10-20 02:45:08,895 INFO L226 Difference]: Without dead ends: 58 [2020-10-20 02:45:08,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-10-20 02:45:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-20 02:45:08,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2020-10-20 02:45:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 02:45:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 97 transitions. [2020-10-20 02:45:08,900 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 97 transitions. Word has length 12 [2020-10-20 02:45:08,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:08,900 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 97 transitions. [2020-10-20 02:45:08,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 02:45:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 97 transitions. [2020-10-20 02:45:08,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 02:45:08,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:08,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:09,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:09,113 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:09,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:09,114 INFO L82 PathProgramCache]: Analyzing trace with hash -311794613, now seen corresponding path program 8 times [2020-10-20 02:45:09,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:09,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262371703] [2020-10-20 02:45:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:09,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262371703] [2020-10-20 02:45:09,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392214264] [2020-10-20 02:45:09,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:09,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 02:45:09,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:09,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 02:45:09,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:09,261 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 02:45:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:09,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:09,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-20 02:45:09,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308307274] [2020-10-20 02:45:09,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 02:45:09,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:09,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 02:45:09,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-20 02:45:09,273 INFO L87 Difference]: Start difference. First operand 41 states and 97 transitions. Second operand 9 states. [2020-10-20 02:45:09,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:09,504 INFO L93 Difference]: Finished difference Result 71 states and 167 transitions. [2020-10-20 02:45:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 02:45:09,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-20 02:45:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:09,506 INFO L225 Difference]: With dead ends: 71 [2020-10-20 02:45:09,506 INFO L226 Difference]: Without dead ends: 62 [2020-10-20 02:45:09,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-10-20 02:45:09,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-20 02:45:09,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 47. [2020-10-20 02:45:09,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 02:45:09,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 115 transitions. [2020-10-20 02:45:09,512 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 115 transitions. Word has length 12 [2020-10-20 02:45:09,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:09,512 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 115 transitions. [2020-10-20 02:45:09,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 02:45:09,512 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 115 transitions. [2020-10-20 02:45:09,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 02:45:09,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:09,513 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:09,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-20 02:45:09,723 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:09,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:09,724 INFO L82 PathProgramCache]: Analyzing trace with hash -2018100772, now seen corresponding path program 9 times [2020-10-20 02:45:09,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:09,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73576119] [2020-10-20 02:45:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:09,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73576119] [2020-10-20 02:45:09,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22707166] [2020-10-20 02:45:09,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:09,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-20 02:45:09,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:09,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 02:45:09,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:09,886 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 02:45:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:09,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:09,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-20 02:45:09,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727415172] [2020-10-20 02:45:09,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 02:45:09,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:09,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 02:45:09,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-20 02:45:09,902 INFO L87 Difference]: Start difference. First operand 47 states and 115 transitions. Second operand 10 states. [2020-10-20 02:45:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:10,169 INFO L93 Difference]: Finished difference Result 72 states and 169 transitions. [2020-10-20 02:45:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 02:45:10,171 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-20 02:45:10,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:10,172 INFO L225 Difference]: With dead ends: 72 [2020-10-20 02:45:10,172 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 02:45:10,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2020-10-20 02:45:10,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 02:45:10,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2020-10-20 02:45:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 02:45:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 97 transitions. [2020-10-20 02:45:10,176 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 97 transitions. Word has length 13 [2020-10-20 02:45:10,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:10,176 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 97 transitions. [2020-10-20 02:45:10,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 02:45:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 97 transitions. [2020-10-20 02:45:10,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 02:45:10,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:10,177 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:10,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:10,387 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:10,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:10,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1075670313, now seen corresponding path program 10 times [2020-10-20 02:45:10,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:10,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366380411] [2020-10-20 02:45:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:10,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366380411] [2020-10-20 02:45:10,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290208801] [2020-10-20 02:45:10,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:10,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 02:45:10,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:10,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 02:45:10,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:10,540 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 02:45:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:10,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:10,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-20 02:45:10,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767536934] [2020-10-20 02:45:10,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 02:45:10,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:10,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 02:45:10,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-20 02:45:10,554 INFO L87 Difference]: Start difference. First operand 41 states and 97 transitions. Second operand 10 states. [2020-10-20 02:45:10,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:10,745 INFO L93 Difference]: Finished difference Result 64 states and 153 transitions. [2020-10-20 02:45:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 02:45:10,746 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-20 02:45:10,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:10,747 INFO L225 Difference]: With dead ends: 64 [2020-10-20 02:45:10,747 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 02:45:10,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2020-10-20 02:45:10,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 02:45:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2020-10-20 02:45:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 02:45:10,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 121 transitions. [2020-10-20 02:45:10,752 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 121 transitions. Word has length 13 [2020-10-20 02:45:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:10,753 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 121 transitions. [2020-10-20 02:45:10,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 02:45:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 121 transitions. [2020-10-20 02:45:10,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 02:45:10,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:10,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:10,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:10,964 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:10,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:10,965 INFO L82 PathProgramCache]: Analyzing trace with hash 198162772, now seen corresponding path program 11 times [2020-10-20 02:45:10,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:10,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937561316] [2020-10-20 02:45:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:11,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937561316] [2020-10-20 02:45:11,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892441952] [2020-10-20 02:45:11,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:11,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-20 02:45:11,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:11,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 02:45:11,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:11,140 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 02:45:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:11,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:11,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-20 02:45:11,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250846802] [2020-10-20 02:45:11,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 02:45:11,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:11,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 02:45:11,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-20 02:45:11,155 INFO L87 Difference]: Start difference. First operand 49 states and 121 transitions. Second operand 10 states. [2020-10-20 02:45:11,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:11,301 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2020-10-20 02:45:11,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 02:45:11,302 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-20 02:45:11,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:11,303 INFO L225 Difference]: With dead ends: 64 [2020-10-20 02:45:11,303 INFO L226 Difference]: Without dead ends: 58 [2020-10-20 02:45:11,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-20 02:45:11,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-20 02:45:11,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-20 02:45:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 02:45:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2020-10-20 02:45:11,307 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 14 [2020-10-20 02:45:11,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:11,307 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2020-10-20 02:45:11,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 02:45:11,307 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2020-10-20 02:45:11,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 02:45:11,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:11,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:11,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-20 02:45:11,519 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:11,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:11,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1863413606, now seen corresponding path program 12 times [2020-10-20 02:45:11,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:11,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371527069] [2020-10-20 02:45:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:11,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371527069] [2020-10-20 02:45:11,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998796936] [2020-10-20 02:45:11,650 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:11,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-20 02:45:11,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:11,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 02:45:11,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:11,724 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 02:45:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:11,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:11,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-20 02:45:11,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205032106] [2020-10-20 02:45:11,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 02:45:11,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:11,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 02:45:11,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-20 02:45:11,736 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand 11 states. [2020-10-20 02:45:12,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:12,029 INFO L93 Difference]: Finished difference Result 73 states and 173 transitions. [2020-10-20 02:45:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 02:45:12,030 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-20 02:45:12,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:12,030 INFO L225 Difference]: With dead ends: 73 [2020-10-20 02:45:12,031 INFO L226 Difference]: Without dead ends: 68 [2020-10-20 02:45:12,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=359, Unknown=0, NotChecked=0, Total=552 [2020-10-20 02:45:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-20 02:45:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 45. [2020-10-20 02:45:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 02:45:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 107 transitions. [2020-10-20 02:45:12,034 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 107 transitions. Word has length 14 [2020-10-20 02:45:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:12,035 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 107 transitions. [2020-10-20 02:45:12,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 02:45:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 107 transitions. [2020-10-20 02:45:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 02:45:12,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:12,036 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:12,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:12,245 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:12,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:12,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1013983880, now seen corresponding path program 13 times [2020-10-20 02:45:12,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:12,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712770955] [2020-10-20 02:45:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:12,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712770955] [2020-10-20 02:45:12,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940442137] [2020-10-20 02:45:12,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:12,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 02:45:12,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:12,406 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 02:45:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:12,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:12,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-20 02:45:12,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187411804] [2020-10-20 02:45:12,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 02:45:12,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:12,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 02:45:12,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-20 02:45:12,423 INFO L87 Difference]: Start difference. First operand 45 states and 107 transitions. Second operand 11 states. [2020-10-20 02:45:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:12,745 INFO L93 Difference]: Finished difference Result 81 states and 191 transitions. [2020-10-20 02:45:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-20 02:45:12,746 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-20 02:45:12,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:12,747 INFO L225 Difference]: With dead ends: 81 [2020-10-20 02:45:12,747 INFO L226 Difference]: Without dead ends: 72 [2020-10-20 02:45:12,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2020-10-20 02:45:12,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-20 02:45:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53. [2020-10-20 02:45:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-20 02:45:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 131 transitions. [2020-10-20 02:45:12,751 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 131 transitions. Word has length 14 [2020-10-20 02:45:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:12,752 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 131 transitions. [2020-10-20 02:45:12,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 02:45:12,752 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 131 transitions. [2020-10-20 02:45:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 02:45:12,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:12,752 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:12,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 02:45:12,963 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:12,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:12,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1931272153, now seen corresponding path program 14 times [2020-10-20 02:45:12,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:12,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125779427] [2020-10-20 02:45:12,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:13,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125779427] [2020-10-20 02:45:13,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286613772] [2020-10-20 02:45:13,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:13,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 02:45:13,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:13,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 02:45:13,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:13,171 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 02:45:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:13,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:13,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-20 02:45:13,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077246867] [2020-10-20 02:45:13,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 02:45:13,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:13,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 02:45:13,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-20 02:45:13,183 INFO L87 Difference]: Start difference. First operand 53 states and 131 transitions. Second operand 12 states. [2020-10-20 02:45:13,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:13,535 INFO L93 Difference]: Finished difference Result 82 states and 193 transitions. [2020-10-20 02:45:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-20 02:45:13,536 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-20 02:45:13,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:13,536 INFO L225 Difference]: With dead ends: 82 [2020-10-20 02:45:13,537 INFO L226 Difference]: Without dead ends: 73 [2020-10-20 02:45:13,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-20 02:45:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-20 02:45:13,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 45. [2020-10-20 02:45:13,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 02:45:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 107 transitions. [2020-10-20 02:45:13,544 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 107 transitions. Word has length 15 [2020-10-20 02:45:13,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:13,545 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 107 transitions. [2020-10-20 02:45:13,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 02:45:13,545 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 107 transitions. [2020-10-20 02:45:13,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 02:45:13,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:13,546 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:13,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-20 02:45:13,747 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:13,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:13,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1368757306, now seen corresponding path program 15 times [2020-10-20 02:45:13,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:13,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994122870] [2020-10-20 02:45:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:13,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:13,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994122870] [2020-10-20 02:45:13,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466037529] [2020-10-20 02:45:13,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:13,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-20 02:45:13,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:13,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 02:45:13,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:13,930 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 02:45:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:13,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:13,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-20 02:45:13,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260869001] [2020-10-20 02:45:13,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 02:45:13,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:13,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 02:45:13,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-20 02:45:13,946 INFO L87 Difference]: Start difference. First operand 45 states and 107 transitions. Second operand 12 states. [2020-10-20 02:45:14,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:14,241 INFO L93 Difference]: Finished difference Result 72 states and 173 transitions. [2020-10-20 02:45:14,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 02:45:14,242 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-20 02:45:14,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:14,244 INFO L225 Difference]: With dead ends: 72 [2020-10-20 02:45:14,244 INFO L226 Difference]: Without dead ends: 67 [2020-10-20 02:45:14,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=395, Unknown=0, NotChecked=0, Total=600 [2020-10-20 02:45:14,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-20 02:45:14,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-10-20 02:45:14,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-20 02:45:14,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 137 transitions. [2020-10-20 02:45:14,248 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 137 transitions. Word has length 15 [2020-10-20 02:45:14,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:14,248 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 137 transitions. [2020-10-20 02:45:14,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 02:45:14,248 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 137 transitions. [2020-10-20 02:45:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 02:45:14,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:14,249 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:14,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 02:45:14,452 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:14,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:14,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1455869111, now seen corresponding path program 16 times [2020-10-20 02:45:14,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:14,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069075539] [2020-10-20 02:45:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:14,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069075539] [2020-10-20 02:45:14,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911122387] [2020-10-20 02:45:14,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:14,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 02:45:14,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:14,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 02:45:14,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:14,627 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 02:45:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:14,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:14,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-20 02:45:14,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339254680] [2020-10-20 02:45:14,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 02:45:14,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:14,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 02:45:14,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-20 02:45:14,643 INFO L87 Difference]: Start difference. First operand 55 states and 137 transitions. Second operand 12 states. [2020-10-20 02:45:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:14,876 INFO L93 Difference]: Finished difference Result 72 states and 171 transitions. [2020-10-20 02:45:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 02:45:14,876 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-10-20 02:45:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:14,877 INFO L225 Difference]: With dead ends: 72 [2020-10-20 02:45:14,877 INFO L226 Difference]: Without dead ends: 66 [2020-10-20 02:45:14,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=275, Unknown=0, NotChecked=0, Total=420 [2020-10-20 02:45:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-20 02:45:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-10-20 02:45:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-20 02:45:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 143 transitions. [2020-10-20 02:45:14,881 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 143 transitions. Word has length 16 [2020-10-20 02:45:14,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:14,881 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 143 transitions. [2020-10-20 02:45:14,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 02:45:14,881 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 143 transitions. [2020-10-20 02:45:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 02:45:14,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:14,882 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:15,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-20 02:45:15,083 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:15,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:15,083 INFO L82 PathProgramCache]: Analyzing trace with hash -260077303, now seen corresponding path program 17 times [2020-10-20 02:45:15,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:15,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111596909] [2020-10-20 02:45:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:15,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111596909] [2020-10-20 02:45:15,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376098719] [2020-10-20 02:45:15,171 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:15,235 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-20 02:45:15,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:15,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 02:45:15,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:15,262 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 02:45:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:15,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:15,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-10-20 02:45:15,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933608055] [2020-10-20 02:45:15,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 02:45:15,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:15,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 02:45:15,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-20 02:45:15,277 INFO L87 Difference]: Start difference. First operand 58 states and 143 transitions. Second operand 13 states. [2020-10-20 02:45:15,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:15,628 INFO L93 Difference]: Finished difference Result 83 states and 197 transitions. [2020-10-20 02:45:15,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-20 02:45:15,629 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-20 02:45:15,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:15,630 INFO L225 Difference]: With dead ends: 83 [2020-10-20 02:45:15,630 INFO L226 Difference]: Without dead ends: 78 [2020-10-20 02:45:15,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=298, Invalid=572, Unknown=0, NotChecked=0, Total=870 [2020-10-20 02:45:15,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-20 02:45:15,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 49. [2020-10-20 02:45:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 02:45:15,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions. [2020-10-20 02:45:15,633 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 117 transitions. Word has length 16 [2020-10-20 02:45:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:15,633 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 117 transitions. [2020-10-20 02:45:15,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 02:45:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 117 transitions. [2020-10-20 02:45:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 02:45:15,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:15,634 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:15,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:15,843 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:15,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:15,843 INFO L82 PathProgramCache]: Analyzing trace with hash -518171259, now seen corresponding path program 18 times [2020-10-20 02:45:15,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:15,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414943993] [2020-10-20 02:45:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:15,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414943993] [2020-10-20 02:45:15,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947405326] [2020-10-20 02:45:15,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:16,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-20 02:45:16,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:16,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 02:45:16,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:16,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:16,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-10-20 02:45:16,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475943462] [2020-10-20 02:45:16,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 02:45:16,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:16,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 02:45:16,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-20 02:45:16,044 INFO L87 Difference]: Start difference. First operand 49 states and 117 transitions. Second operand 13 states. [2020-10-20 02:45:16,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:16,389 INFO L93 Difference]: Finished difference Result 91 states and 215 transitions. [2020-10-20 02:45:16,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-20 02:45:16,389 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-20 02:45:16,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:16,390 INFO L225 Difference]: With dead ends: 91 [2020-10-20 02:45:16,390 INFO L226 Difference]: Without dead ends: 82 [2020-10-20 02:45:16,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-10-20 02:45:16,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-20 02:45:16,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2020-10-20 02:45:16,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-20 02:45:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 147 transitions. [2020-10-20 02:45:16,395 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 147 transitions. Word has length 16 [2020-10-20 02:45:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:16,395 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 147 transitions. [2020-10-20 02:45:16,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 02:45:16,396 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 147 transitions. [2020-10-20 02:45:16,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 02:45:16,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:16,400 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:16,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:16,610 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:16,610 INFO L82 PathProgramCache]: Analyzing trace with hash 527563414, now seen corresponding path program 19 times [2020-10-20 02:45:16,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:16,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965814939] [2020-10-20 02:45:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:16,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965814939] [2020-10-20 02:45:16,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294062427] [2020-10-20 02:45:16,705 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:16,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 02:45:16,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:16,812 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 02:45:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:16,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:16,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-20 02:45:16,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752181000] [2020-10-20 02:45:16,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 02:45:16,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:16,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 02:45:16,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-20 02:45:16,829 INFO L87 Difference]: Start difference. First operand 59 states and 147 transitions. Second operand 14 states. [2020-10-20 02:45:17,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:17,268 INFO L93 Difference]: Finished difference Result 92 states and 217 transitions. [2020-10-20 02:45:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-20 02:45:17,271 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-20 02:45:17,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:17,272 INFO L225 Difference]: With dead ends: 92 [2020-10-20 02:45:17,272 INFO L226 Difference]: Without dead ends: 83 [2020-10-20 02:45:17,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=719, Unknown=0, NotChecked=0, Total=1056 [2020-10-20 02:45:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-20 02:45:17,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 49. [2020-10-20 02:45:17,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 02:45:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions. [2020-10-20 02:45:17,277 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 117 transitions. Word has length 17 [2020-10-20 02:45:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:17,279 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 117 transitions. [2020-10-20 02:45:17,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 02:45:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 117 transitions. [2020-10-20 02:45:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 02:45:17,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:17,280 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:17,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:17,484 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:17,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1116588253, now seen corresponding path program 20 times [2020-10-20 02:45:17,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:17,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564254244] [2020-10-20 02:45:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:17,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564254244] [2020-10-20 02:45:17,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027255227] [2020-10-20 02:45:17,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:17,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 02:45:17,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:17,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 02:45:17,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:17,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:17,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-20 02:45:17,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411054692] [2020-10-20 02:45:17,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 02:45:17,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:17,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 02:45:17,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-20 02:45:17,682 INFO L87 Difference]: Start difference. First operand 49 states and 117 transitions. Second operand 14 states. [2020-10-20 02:45:18,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:18,130 INFO L93 Difference]: Finished difference Result 80 states and 193 transitions. [2020-10-20 02:45:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-20 02:45:18,130 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-20 02:45:18,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:18,131 INFO L225 Difference]: With dead ends: 80 [2020-10-20 02:45:18,131 INFO L226 Difference]: Without dead ends: 75 [2020-10-20 02:45:18,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=322, Invalid=734, Unknown=0, NotChecked=0, Total=1056 [2020-10-20 02:45:18,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-20 02:45:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-10-20 02:45:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-20 02:45:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 153 transitions. [2020-10-20 02:45:18,135 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 153 transitions. Word has length 17 [2020-10-20 02:45:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:18,135 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 153 transitions. [2020-10-20 02:45:18,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 02:45:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 153 transitions. [2020-10-20 02:45:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 02:45:18,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:18,136 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:18,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-20 02:45:18,345 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:18,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:18,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1069116582, now seen corresponding path program 21 times [2020-10-20 02:45:18,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:18,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580860643] [2020-10-20 02:45:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 02:45:18,359 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 02:45:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 02:45:18,371 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 02:45:18,402 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 02:45:18,403 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 02:45:18,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-20 02:45:18,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 02:45:18 BasicIcfg [2020-10-20 02:45:18,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 02:45:18,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 02:45:18,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 02:45:18,516 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 02:45:18,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:03" (3/4) ... [2020-10-20 02:45:18,520 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 02:45:18,633 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 02:45:18,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 02:45:18,635 INFO L168 Benchmark]: Toolchain (without parser) took 16405.61 ms. Allocated memory was 35.1 MB in the beginning and 94.4 MB in the end (delta: 59.2 MB). Free memory was 13.5 MB in the beginning and 5.9 MB in the end (delta: 7.6 MB). Peak memory consumption was 66.8 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:18,635 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 33.0 MB. Free memory was 9.4 MB in the beginning and 9.3 MB in the end (delta: 63.0 kB). Peak memory consumption was 63.0 kB. Max. memory is 14.3 GB. [2020-10-20 02:45:18,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.77 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 12.6 MB in the beginning and 20.4 MB in the end (delta: -7.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:18,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.89 ms. Allocated memory is still 44.0 MB. Free memory was 20.1 MB in the beginning and 18.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:18,637 INFO L168 Benchmark]: Boogie Preprocessor took 35.29 ms. Allocated memory is still 44.0 MB. Free memory was 18.2 MB in the beginning and 16.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:18,637 INFO L168 Benchmark]: RCFGBuilder took 411.16 ms. Allocated memory was 44.0 MB in the beginning and 48.2 MB in the end (delta: 4.2 MB). Free memory was 16.5 MB in the beginning and 14.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:18,638 INFO L168 Benchmark]: TraceAbstraction took 15064.83 ms. Allocated memory was 48.2 MB in the beginning and 94.4 MB in the end (delta: 46.1 MB). Free memory was 14.1 MB in the beginning and 12.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 47.5 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:18,638 INFO L168 Benchmark]: Witness Printer took 119.62 ms. Allocated memory is still 94.4 MB. Free memory was 12.7 MB in the beginning and 5.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:18,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 33.0 MB. Free memory was 9.4 MB in the beginning and 9.3 MB in the end (delta: 63.0 kB). Peak memory consumption was 63.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 714.77 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 12.6 MB in the beginning and 20.4 MB in the end (delta: -7.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 49.89 ms. Allocated memory is still 44.0 MB. Free memory was 20.1 MB in the beginning and 18.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 35.29 ms. Allocated memory is still 44.0 MB. Free memory was 18.2 MB in the beginning and 16.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 411.16 ms. Allocated memory was 44.0 MB in the beginning and 48.2 MB in the end (delta: 4.2 MB). Free memory was 16.5 MB in the beginning and 14.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 15064.83 ms. Allocated memory was 48.2 MB in the beginning and 94.4 MB in the end (delta: 46.1 MB). Free memory was 14.1 MB in the beginning and 12.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 47.5 MB. Max. memory is 14.3 GB. * Witness Printer took 119.62 ms. Allocated memory is still 94.4 MB. Free memory was 12.7 MB in the beginning and 5.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 785 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 15 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 65 PlacesBefore, 20 PlacesAfterwards, 64 TransitionsBefore, 16 TransitionsAfterwards, 1144 CoEnabledTransitionPairs, 7 FixpointIterations, 16 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 1187 MoverChecksTotal - CounterExampleResult [Line: 685]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L686] 0 int i = 3, j = 6; [L704] 0 pthread_t id1, id2; [L705] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L706] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, i=3, j=6] [L708] 0 int condI = i >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, i=3, j=6] [L696] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L688] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=5, k=4] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L711] 0 int condJ = j >= (2*5 +6); [L713] COND TRUE 0 condI || condJ [L685] COND FALSE 0 !(0) [L685] 0 __assert_fail ("0", "triangular-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.7s, OverallIterations: 23, TraceHistogramMax: 5, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 342 SDtfs, 866 SDslu, 1018 SDs, 0 SdLazy, 1132 SolverSat, 512 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 580 GetRequests, 193 SyntacticMatches, 14 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=22, 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, 22 MinimizatonAttempts, 322 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 538 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 481 ConstructedInterpolants, 0 QuantifiedInterpolants, 26593 SizeOfPredicates, 105 NumberOfNonLiveVariables, 1836 ConjunctsInSsa, 175 ConjunctsInUnsatCore, 39 InterpolantComputations, 5 PerfectInterpolantSequences, 0/240 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 incorrect! Received shutdown request...