./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.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-wmm/thin002_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1da2a21ed04669479605d762389aa47053d0acc3 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:09:10,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:09:10,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:09:11,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:09:11,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:09:11,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:09:11,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:09:11,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:09:11,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:09:11,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:09:11,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:09:11,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:09:11,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:09:11,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:09:11,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:09:11,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:09:11,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:09:11,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:09:11,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:09:11,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:09:11,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:09:11,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:09:11,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:09:11,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:09:11,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:09:11,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:09:11,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:09:11,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:09:11,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:09:11,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:09:11,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:09:11,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:09:11,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:09:11,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:09:11,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:09:11,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:09:11,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:09:11,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:09:11,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:09:11,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:09:11,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:09:11,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:09:11,126 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:09:11,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:09:11,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:09:11,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:09:11,128 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:09:11,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:09:11,129 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:09:11,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:09:11,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:09:11,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:09:11,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:09:11,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:09:11,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:09:11,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:09:11,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:09:11,132 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:09:11,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:09:11,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:09:11,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:09:11,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:09:11,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:09:11,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:09:11,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:09:11,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:09:11,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:09:11,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:09:11,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:09:11,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:09:11,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:09:11,135 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 -> 1da2a21ed04669479605d762389aa47053d0acc3 [2020-10-20 03:09:11,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:09:11,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:09:11,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:09:11,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:09:11,401 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:09:11,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i [2020-10-20 03:09:11,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934f1a1c5/121ceffd5536441caba397f8ccb756f7/FLAGd11cefc4c [2020-10-20 03:09:11,973 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:09:11,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i [2020-10-20 03:09:11,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934f1a1c5/121ceffd5536441caba397f8ccb756f7/FLAGd11cefc4c [2020-10-20 03:09:12,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934f1a1c5/121ceffd5536441caba397f8ccb756f7 [2020-10-20 03:09:12,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:09:12,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:09:12,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:09:12,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:09:12,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:09:12,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:09:12" (1/1) ... [2020-10-20 03:09:12,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b53e437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:12, skipping insertion in model container [2020-10-20 03:09:12,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:09:12" (1/1) ... [2020-10-20 03:09:12,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:09:12,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:09:12,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:09:12,886 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:09:12,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:09:13,030 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:09:13,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:13 WrapperNode [2020-10-20 03:09:13,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:09:13,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:09:13,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:09:13,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:09:13,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:13" (1/1) ... [2020-10-20 03:09:13,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:13" (1/1) ... [2020-10-20 03:09:13,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:09:13,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:09:13,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:09:13,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:09:13,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:13" (1/1) ... [2020-10-20 03:09:13,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:13" (1/1) ... [2020-10-20 03:09:13,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:13" (1/1) ... [2020-10-20 03:09:13,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:13" (1/1) ... [2020-10-20 03:09:13,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:13" (1/1) ... [2020-10-20 03:09:13,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:13" (1/1) ... [2020-10-20 03:09:13,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:13" (1/1) ... [2020-10-20 03:09:13,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:09:13,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:09:13,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:09:13,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:09:13,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:13" (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 03:09:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:09:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:09:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:09:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:09:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:09:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:09:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:09:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:09:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:09:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:09:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-20 03:09:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-20 03:09:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:09:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:09:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:09:13,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:09:13,210 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 03:09:13,580 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:09:13,580 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:09:13,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:09:13 BoogieIcfgContainer [2020-10-20 03:09:13,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:09:13,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:09:13,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:09:13,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:09:13,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:09:12" (1/3) ... [2020-10-20 03:09:13,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4190140d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:09:13, skipping insertion in model container [2020-10-20 03:09:13,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:13" (2/3) ... [2020-10-20 03:09:13,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4190140d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:09:13, skipping insertion in model container [2020-10-20 03:09:13,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:09:13" (3/3) ... [2020-10-20 03:09:13,591 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2020-10-20 03:09:13,603 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:09:13,603 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:09:13,610 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:09:13,611 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:09:13,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,644 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,644 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,646 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,646 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,648 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,648 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,648 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,648 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,650 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,650 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,650 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,650 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,651 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,651 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,655 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,656 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,656 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,656 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,668 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,668 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,679 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,680 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,680 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,680 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,683 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,684 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,684 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,684 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:13,686 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:09:13,699 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-20 03:09:13,725 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:09:13,725 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:09:13,725 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:09:13,725 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:09:13,725 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:09:13,725 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:09:13,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:09:13,726 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:09:13,739 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:09:13,741 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 95 transitions, 210 flow [2020-10-20 03:09:13,743 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 95 transitions, 210 flow [2020-10-20 03:09:13,745 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 105 places, 95 transitions, 210 flow [2020-10-20 03:09:13,800 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2020-10-20 03:09:13,801 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:09:13,806 INFO L80 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2020-10-20 03:09:13,810 INFO L117 LiptonReduction]: Number of co-enabled transitions 2256 [2020-10-20 03:09:15,911 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-20 03:09:16,057 INFO L132 LiptonReduction]: Checked pairs total: 4418 [2020-10-20 03:09:16,058 INFO L134 LiptonReduction]: Total number of compositions: 80 [2020-10-20 03:09:16,065 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-10-20 03:09:16,173 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-10-20 03:09:16,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-10-20 03:09:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:09:16,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:16,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:16,193 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:16,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:16,200 INFO L82 PathProgramCache]: Analyzing trace with hash 481695671, now seen corresponding path program 1 times [2020-10-20 03:09:16,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:16,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650496168] [2020-10-20 03:09:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:16,399 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 03:09:16,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650496168] [2020-10-20 03:09:16,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:16,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:09:16,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334621468] [2020-10-20 03:09:16,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:09:16,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:16,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:09:16,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:09:16,426 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-10-20 03:09:16,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:16,503 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-10-20 03:09:16,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:09:16,505 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 03:09:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:16,547 INFO L225 Difference]: With dead ends: 1450 [2020-10-20 03:09:16,547 INFO L226 Difference]: Without dead ends: 1194 [2020-10-20 03:09:16,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:09:16,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-10-20 03:09:16,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-10-20 03:09:16,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-10-20 03:09:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-10-20 03:09:16,895 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-10-20 03:09:16,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:16,896 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-10-20 03:09:16,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:09:16,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-10-20 03:09:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:09:16,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:16,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:16,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:09:16,906 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:16,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:16,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2047662136, now seen corresponding path program 1 times [2020-10-20 03:09:16,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:16,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74561907] [2020-10-20 03:09:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:17,109 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 03:09:17,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74561907] [2020-10-20 03:09:17,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:17,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:09:17,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342102948] [2020-10-20 03:09:17,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:09:17,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:17,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:09:17,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:09:17,112 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-10-20 03:09:17,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:17,156 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-10-20 03:09:17,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:09:17,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:09:17,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:17,167 INFO L225 Difference]: With dead ends: 1322 [2020-10-20 03:09:17,167 INFO L226 Difference]: Without dead ends: 1066 [2020-10-20 03:09:17,168 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 03:09:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-20 03:09:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-10-20 03:09:17,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-20 03:09:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-10-20 03:09:17,208 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-10-20 03:09:17,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:17,208 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-10-20 03:09:17,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:09:17,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-10-20 03:09:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:09:17,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:17,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:17,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:09:17,211 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:17,212 INFO L82 PathProgramCache]: Analyzing trace with hash -947021519, now seen corresponding path program 1 times [2020-10-20 03:09:17,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:17,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402437858] [2020-10-20 03:09:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:17,267 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 03:09:17,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402437858] [2020-10-20 03:09:17,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:17,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:09:17,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883615720] [2020-10-20 03:09:17,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:09:17,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:17,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:09:17,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:09:17,269 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-10-20 03:09:17,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:17,322 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-10-20 03:09:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:09:17,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:09:17,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:17,331 INFO L225 Difference]: With dead ends: 1162 [2020-10-20 03:09:17,332 INFO L226 Difference]: Without dead ends: 970 [2020-10-20 03:09:17,332 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 03:09:17,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-20 03:09:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-10-20 03:09:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-20 03:09:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-10-20 03:09:17,368 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-10-20 03:09:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:17,368 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-10-20 03:09:17,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:09:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-10-20 03:09:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:09:17,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:17,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:17,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:09:17,371 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:17,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:17,371 INFO L82 PathProgramCache]: Analyzing trace with hash 639493830, now seen corresponding path program 1 times [2020-10-20 03:09:17,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:17,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744298312] [2020-10-20 03:09:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:17,452 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 03:09:17,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744298312] [2020-10-20 03:09:17,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:17,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:09:17,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338297467] [2020-10-20 03:09:17,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:09:17,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:17,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:09:17,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:09:17,457 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-10-20 03:09:17,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:17,506 INFO L93 Difference]: Finished difference Result 1162 states and 3980 transitions. [2020-10-20 03:09:17,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:09:17,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 03:09:17,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:17,511 INFO L225 Difference]: With dead ends: 1162 [2020-10-20 03:09:17,511 INFO L226 Difference]: Without dead ends: 508 [2020-10-20 03:09:17,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:09:17,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-20 03:09:17,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-10-20 03:09:17,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-10-20 03:09:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1638 transitions. [2020-10-20 03:09:17,529 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1638 transitions. Word has length 13 [2020-10-20 03:09:17,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:17,530 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 1638 transitions. [2020-10-20 03:09:17,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:09:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1638 transitions. [2020-10-20 03:09:17,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:09:17,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:17,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:17,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:09:17,554 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:17,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:17,555 INFO L82 PathProgramCache]: Analyzing trace with hash 380154805, now seen corresponding path program 1 times [2020-10-20 03:09:17,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:17,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291510886] [2020-10-20 03:09:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:17,597 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 03:09:17,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291510886] [2020-10-20 03:09:17,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:17,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:09:17,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608993314] [2020-10-20 03:09:17,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:09:17,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:17,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:09:17,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:09:17,599 INFO L87 Difference]: Start difference. First operand 508 states and 1638 transitions. Second operand 4 states. [2020-10-20 03:09:17,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:17,619 INFO L93 Difference]: Finished difference Result 544 states and 1704 transitions. [2020-10-20 03:09:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:09:17,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-20 03:09:17,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:17,624 INFO L225 Difference]: With dead ends: 544 [2020-10-20 03:09:17,624 INFO L226 Difference]: Without dead ends: 472 [2020-10-20 03:09:17,625 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 03:09:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-20 03:09:17,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-10-20 03:09:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-10-20 03:09:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-10-20 03:09:17,641 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-10-20 03:09:17,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:17,641 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-10-20 03:09:17,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:09:17,642 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-10-20 03:09:17,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 03:09:17,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:17,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:17,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:09:17,644 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:17,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:17,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2067323682, now seen corresponding path program 1 times [2020-10-20 03:09:17,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:17,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466319354] [2020-10-20 03:09:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:17,689 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 03:09:17,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466319354] [2020-10-20 03:09:17,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:17,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:09:17,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219818416] [2020-10-20 03:09:17,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:09:17,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:17,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:09:17,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:09:17,692 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 5 states. [2020-10-20 03:09:17,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:17,738 INFO L93 Difference]: Finished difference Result 586 states and 1831 transitions. [2020-10-20 03:09:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:09:17,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-20 03:09:17,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:17,741 INFO L225 Difference]: With dead ends: 586 [2020-10-20 03:09:17,742 INFO L226 Difference]: Without dead ends: 262 [2020-10-20 03:09:17,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:09:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-20 03:09:17,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-10-20 03:09:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-20 03:09:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 768 transitions. [2020-10-20 03:09:17,754 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 768 transitions. Word has length 16 [2020-10-20 03:09:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:17,754 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 768 transitions. [2020-10-20 03:09:17,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:09:17,755 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 768 transitions. [2020-10-20 03:09:17,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:09:17,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:17,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:17,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:09:17,757 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:17,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:17,757 INFO L82 PathProgramCache]: Analyzing trace with hash 253681578, now seen corresponding path program 1 times [2020-10-20 03:09:17,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:17,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173246515] [2020-10-20 03:09:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:17,803 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 03:09:17,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173246515] [2020-10-20 03:09:17,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:17,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:09:17,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202687048] [2020-10-20 03:09:17,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:09:17,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:17,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:09:17,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:09:17,805 INFO L87 Difference]: Start difference. First operand 262 states and 768 transitions. Second operand 5 states. [2020-10-20 03:09:17,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:17,864 INFO L93 Difference]: Finished difference Result 358 states and 1024 transitions. [2020-10-20 03:09:17,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:09:17,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-20 03:09:17,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:17,866 INFO L225 Difference]: With dead ends: 358 [2020-10-20 03:09:17,866 INFO L226 Difference]: Without dead ends: 154 [2020-10-20 03:09:17,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:09:17,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-20 03:09:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-20 03:09:17,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-20 03:09:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-10-20 03:09:17,873 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-10-20 03:09:17,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:17,874 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-10-20 03:09:17,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:09:17,874 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-10-20 03:09:17,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:09:17,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:17,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:09:17,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:09:17,875 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:17,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:17,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2117772472, now seen corresponding path program 1 times [2020-10-20 03:09:17,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:17,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30017890] [2020-10-20 03:09:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:17,924 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 03:09:17,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30017890] [2020-10-20 03:09:17,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:17,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:09:17,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844401074] [2020-10-20 03:09:17,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:09:17,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:17,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:09:17,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:09:17,926 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-10-20 03:09:17,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:17,957 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-10-20 03:09:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:09:17,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:09:17,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:17,958 INFO L225 Difference]: With dead ends: 130 [2020-10-20 03:09:17,958 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:09:17,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:09:17,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:09:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:09:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:09:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:09:17,960 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-20 03:09:17,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:17,960 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:09:17,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:09:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:09:17,961 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:09:17,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:09:17,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:09:17 BasicIcfg [2020-10-20 03:09:17,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:09:17,966 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:09:17,966 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:09:17,966 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:09:17,967 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:09:13" (3/4) ... [2020-10-20 03:09:17,970 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:09:17,977 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:09:17,977 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:09:17,978 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:09:17,978 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-10-20 03:09:17,983 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-10-20 03:09:17,983 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:09:17,984 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:09:17,984 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:09:18,033 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:09:18,033 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:09:18,035 INFO L168 Benchmark]: Toolchain (without parser) took 5735.24 ms. Allocated memory was 34.6 MB in the beginning and 99.1 MB in the end (delta: 64.5 MB). Free memory was 11.0 MB in the beginning and 39.7 MB in the end (delta: -28.7 MB). Peak memory consumption was 35.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:18,036 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 32.5 MB. Free memory was 7.6 MB in the beginning and 7.6 MB in the end (delta: 41.6 kB). Peak memory consumption was 41.6 kB. Max. memory is 14.3 GB. [2020-10-20 03:09:18,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.02 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 10.2 MB in the beginning and 15.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:18,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.99 ms. Allocated memory is still 43.5 MB. Free memory was 15.9 MB in the beginning and 13.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:18,037 INFO L168 Benchmark]: Boogie Preprocessor took 29.17 ms. Allocated memory is still 43.5 MB. Free memory was 13.7 MB in the beginning and 12.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:18,038 INFO L168 Benchmark]: RCFGBuilder took 449.46 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 12.0 MB in the beginning and 19.3 MB in the end (delta: -7.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:18,039 INFO L168 Benchmark]: TraceAbstraction took 4381.31 ms. Allocated memory was 45.6 MB in the beginning and 99.1 MB in the end (delta: 53.5 MB). Free memory was 18.7 MB in the beginning and 43.4 MB in the end (delta: -24.8 MB). Peak memory consumption was 28.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:18,039 INFO L168 Benchmark]: Witness Printer took 67.81 ms. Allocated memory is still 99.1 MB. Free memory was 43.4 MB in the beginning and 39.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:18,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 32.5 MB. Free memory was 7.6 MB in the beginning and 7.6 MB in the end (delta: 41.6 kB). Peak memory consumption was 41.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 726.02 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 10.2 MB in the beginning and 15.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 70.99 ms. Allocated memory is still 43.5 MB. Free memory was 15.9 MB in the beginning and 13.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 29.17 ms. Allocated memory is still 43.5 MB. Free memory was 13.7 MB in the beginning and 12.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 449.46 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 12.0 MB in the beginning and 19.3 MB in the end (delta: -7.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4381.31 ms. Allocated memory was 45.6 MB in the beginning and 99.1 MB in the end (delta: 53.5 MB). Free memory was 18.7 MB in the beginning and 43.4 MB in the end (delta: -24.8 MB). Peak memory consumption was 28.7 MB. Max. memory is 14.3 GB. * Witness Printer took 67.81 ms. Allocated memory is still 99.1 MB. Free memory was 43.4 MB in the beginning and 39.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1644 VarBasedMoverChecksPositive, 61 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 49 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 172 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 105 PlacesBefore, 41 PlacesAfterwards, 95 TransitionsBefore, 29 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 80 TotalNumberOfCompositions, 4418 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 232 SDtfs, 257 SDslu, 326 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...