./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe008_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/safe008_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 ea0dd35677cfacf05fc27f5cca6df484a5bc4e8e .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 03:03:56,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:03:56,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:03:56,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:03:56,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:03:56,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:03:56,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:03:56,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:03:56,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:03:56,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:03:56,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:03:56,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:03:56,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:03:56,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:03:56,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:03:56,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:03:56,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:03:56,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:03:56,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:03:56,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:03:56,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:03:56,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:03:56,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:03:56,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:03:56,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:03:56,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:03:56,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:03:56,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:03:56,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:03:56,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:03:56,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:03:56,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:03:56,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:03:56,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:03:56,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:03:56,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:03:56,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:03:56,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:03:56,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:03:56,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:03:56,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:03:56,146 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:03:56,169 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:03:56,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:03:56,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:03:56,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:03:56,170 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:03:56,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:03:56,171 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:03:56,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:03:56,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:03:56,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:03:56,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:03:56,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:03:56,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:03:56,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:03:56,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:03:56,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:03:56,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:03:56,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:03:56,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:03:56,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:03:56,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:03:56,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:03:56,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:03:56,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:03:56,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:03:56,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:03:56,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:03:56,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:03:56,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:03:56,175 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 -> ea0dd35677cfacf05fc27f5cca6df484a5bc4e8e [2020-10-20 03:03:56,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:03:56,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:03:56,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:03:56,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:03:56,390 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:03:56,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i [2020-10-20 03:03:56,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666d28319/98e5d4347dae4333a0dc72b7ebbad768/FLAGa16d47606 [2020-10-20 03:03:57,087 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:03:57,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i [2020-10-20 03:03:57,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666d28319/98e5d4347dae4333a0dc72b7ebbad768/FLAGa16d47606 [2020-10-20 03:03:57,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666d28319/98e5d4347dae4333a0dc72b7ebbad768 [2020-10-20 03:03:57,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:03:57,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:03:57,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:03:57,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:03:57,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:03:57,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:03:57" (1/1) ... [2020-10-20 03:03:57,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ff1421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:57, skipping insertion in model container [2020-10-20 03:03:57,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:03:57" (1/1) ... [2020-10-20 03:03:57,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:03:57,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:03:57,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:03:57,934 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:03:57,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:03:58,063 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:03:58,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:58 WrapperNode [2020-10-20 03:03:58,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:03:58,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:03:58,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:03:58,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:03:58,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:58" (1/1) ... [2020-10-20 03:03:58,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:58" (1/1) ... [2020-10-20 03:03:58,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:03:58,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:03:58,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:03:58,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:03:58,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:58" (1/1) ... [2020-10-20 03:03:58,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:58" (1/1) ... [2020-10-20 03:03:58,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:58" (1/1) ... [2020-10-20 03:03:58,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:58" (1/1) ... [2020-10-20 03:03:58,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:58" (1/1) ... [2020-10-20 03:03:58,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:58" (1/1) ... [2020-10-20 03:03:58,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:58" (1/1) ... [2020-10-20 03:03:58,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:03:58,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:03:58,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:03:58,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:03:58,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:03:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:03:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:03:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:03:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:03:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:03:58,210 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:03:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:03:58,210 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:03:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:03:58,211 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:03:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:03:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:03:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:03:58,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:03:58,213 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 03:03:58,637 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:03:58,638 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:03:58,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:03:58 BoogieIcfgContainer [2020-10-20 03:03:58,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:03:58,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:03:58,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:03:58,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:03:58,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:03:57" (1/3) ... [2020-10-20 03:03:58,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8c6b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:03:58, skipping insertion in model container [2020-10-20 03:03:58,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:58" (2/3) ... [2020-10-20 03:03:58,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8c6b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:03:58, skipping insertion in model container [2020-10-20 03:03:58,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:03:58" (3/3) ... [2020-10-20 03:03:58,649 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2020-10-20 03:03:58,669 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:03:58,670 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:03:58,677 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:03:58,678 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:03:58,703 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,703 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,704 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,704 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,705 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,705 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,705 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,706 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,706 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,707 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,708 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,708 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,708 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,712 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,713 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,714 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,720 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,720 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,721 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,721 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,723 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,723 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:58,725 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:03:58,736 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:03:58,754 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:03:58,755 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:03:58,755 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:03:58,755 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:03:58,755 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:03:58,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:03:58,755 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:03:58,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:03:58,776 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:03:58,779 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:03:58,781 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:03:58,783 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-20 03:03:58,832 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-20 03:03:58,833 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:03:58,838 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:03:58,841 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:04:00,649 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-20 03:04:00,956 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-20 03:04:01,100 INFO L132 LiptonReduction]: Checked pairs total: 3181 [2020-10-20 03:04:01,100 INFO L134 LiptonReduction]: Total number of compositions: 74 [2020-10-20 03:04:01,107 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:04:01,133 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-20 03:04:01,135 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-20 03:04:01,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:04:01,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:01,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:01,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:01,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:01,149 INFO L82 PathProgramCache]: Analyzing trace with hash 2101373786, now seen corresponding path program 1 times [2020-10-20 03:04:01,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:01,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062785228] [2020-10-20 03:04:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:01,388 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 03:04:01,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062785228] [2020-10-20 03:04:01,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:01,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:04:01,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344664897] [2020-10-20 03:04:01,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:04:01,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:01,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:04:01,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:01,413 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-20 03:04:01,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:01,460 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-20 03:04:01,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:04:01,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 03:04:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:01,486 INFO L225 Difference]: With dead ends: 282 [2020-10-20 03:04:01,487 INFO L226 Difference]: Without dead ends: 218 [2020-10-20 03:04:01,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-20 03:04:01,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-20 03:04:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-20 03:04:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-20 03:04:01,587 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-20 03:04:01,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:01,588 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-20 03:04:01,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:04:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-20 03:04:01,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:04:01,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:01,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:01,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:04:01,590 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:01,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:01,591 INFO L82 PathProgramCache]: Analyzing trace with hash 718076695, now seen corresponding path program 1 times [2020-10-20 03:04:01,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:01,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875554843] [2020-10-20 03:04:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:01,657 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 03:04:01,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875554843] [2020-10-20 03:04:01,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:01,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:01,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872580974] [2020-10-20 03:04:01,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:01,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:01,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:01,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:01,661 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-20 03:04:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:01,688 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-20 03:04:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:04:01,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 03:04:01,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:01,691 INFO L225 Difference]: With dead ends: 242 [2020-10-20 03:04:01,691 INFO L226 Difference]: Without dead ends: 146 [2020-10-20 03:04:01,692 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 03:04:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-20 03:04:01,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-20 03:04:01,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-20 03:04:01,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-20 03:04:01,701 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-20 03:04:01,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:01,701 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-20 03:04:01,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:01,702 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-20 03:04:01,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:04:01,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:01,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:01,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:04:01,703 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:01,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:01,704 INFO L82 PathProgramCache]: Analyzing trace with hash -676988276, now seen corresponding path program 1 times [2020-10-20 03:04:01,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:01,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721752914] [2020-10-20 03:04:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:01,768 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 03:04:01,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721752914] [2020-10-20 03:04:01,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:01,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:04:01,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035415090] [2020-10-20 03:04:01,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:04:01,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:01,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:04:01,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:01,770 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-20 03:04:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:01,777 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-10-20 03:04:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:04:01,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-20 03:04:01,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:01,779 INFO L225 Difference]: With dead ends: 144 [2020-10-20 03:04:01,779 INFO L226 Difference]: Without dead ends: 144 [2020-10-20 03:04:01,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-20 03:04:01,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-20 03:04:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-20 03:04:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-20 03:04:01,788 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-10-20 03:04:01,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:01,788 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-20 03:04:01,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:04:01,788 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-20 03:04:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:04:01,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:01,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:01,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:04:01,790 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:01,791 INFO L82 PathProgramCache]: Analyzing trace with hash 799592622, now seen corresponding path program 1 times [2020-10-20 03:04:01,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:01,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446161844] [2020-10-20 03:04:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:01,869 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 03:04:01,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446161844] [2020-10-20 03:04:01,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:01,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:01,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865346398] [2020-10-20 03:04:01,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:01,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:01,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:01,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:01,872 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-10-20 03:04:01,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:01,892 INFO L93 Difference]: Finished difference Result 182 states and 430 transitions. [2020-10-20 03:04:01,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:04:01,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:04:01,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:01,895 INFO L225 Difference]: With dead ends: 182 [2020-10-20 03:04:01,895 INFO L226 Difference]: Without dead ends: 86 [2020-10-20 03:04:01,896 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 03:04:01,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-20 03:04:01,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-20 03:04:01,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-20 03:04:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-10-20 03:04:01,914 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 12 [2020-10-20 03:04:01,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:01,915 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-10-20 03:04:01,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:01,916 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-10-20 03:04:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:04:01,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:01,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:01,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:04:01,919 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:01,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:01,920 INFO L82 PathProgramCache]: Analyzing trace with hash -492629862, now seen corresponding path program 1 times [2020-10-20 03:04:01,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:01,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345932286] [2020-10-20 03:04:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:02,006 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 03:04:02,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345932286] [2020-10-20 03:04:02,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:02,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:02,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144315508] [2020-10-20 03:04:02,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:02,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:02,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:02,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:02,009 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 4 states. [2020-10-20 03:04:02,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:02,042 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-10-20 03:04:02,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:02,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 03:04:02,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:02,043 INFO L225 Difference]: With dead ends: 99 [2020-10-20 03:04:02,044 INFO L226 Difference]: Without dead ends: 77 [2020-10-20 03:04:02,044 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 03:04:02,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-20 03:04:02,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-20 03:04:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-20 03:04:02,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 156 transitions. [2020-10-20 03:04:02,048 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 156 transitions. Word has length 13 [2020-10-20 03:04:02,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:02,049 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 156 transitions. [2020-10-20 03:04:02,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:02,049 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 156 transitions. [2020-10-20 03:04:02,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:04:02,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:02,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:02,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:04:02,051 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:02,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:02,051 INFO L82 PathProgramCache]: Analyzing trace with hash 430385268, now seen corresponding path program 1 times [2020-10-20 03:04:02,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:02,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909721283] [2020-10-20 03:04:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:02,208 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 5 [2020-10-20 03:04:02,210 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 03:04:02,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909721283] [2020-10-20 03:04:02,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:02,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:02,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691825896] [2020-10-20 03:04:02,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:02,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:02,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:02,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:02,212 INFO L87 Difference]: Start difference. First operand 77 states and 156 transitions. Second operand 5 states. [2020-10-20 03:04:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:02,253 INFO L93 Difference]: Finished difference Result 78 states and 146 transitions. [2020-10-20 03:04:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:04:02,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 03:04:02,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:02,254 INFO L225 Difference]: With dead ends: 78 [2020-10-20 03:04:02,254 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 03:04:02,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:04:02,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 03:04:02,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-20 03:04:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-20 03:04:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-10-20 03:04:02,258 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 14 [2020-10-20 03:04:02,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:02,259 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-10-20 03:04:02,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:02,259 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-10-20 03:04:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:04:02,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:02,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:02,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:04:02,261 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:02,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:02,261 INFO L82 PathProgramCache]: Analyzing trace with hash 493445752, now seen corresponding path program 1 times [2020-10-20 03:04:02,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:02,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710640381] [2020-10-20 03:04:02,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:02,325 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 03:04:02,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710640381] [2020-10-20 03:04:02,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:02,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:02,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626147152] [2020-10-20 03:04:02,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:04:02,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:02,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:04:02,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:04:02,328 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 6 states. [2020-10-20 03:04:02,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:02,376 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-10-20 03:04:02,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:04:02,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 03:04:02,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:02,377 INFO L225 Difference]: With dead ends: 60 [2020-10-20 03:04:02,377 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 03:04:02,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:04:02,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 03:04:02,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-20 03:04:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 03:04:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-20 03:04:02,380 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-10-20 03:04:02,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:02,380 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-20 03:04:02,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:04:02,381 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-20 03:04:02,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:04:02,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:02,382 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 03:04:02,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:04:02,382 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:02,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1724594669, now seen corresponding path program 1 times [2020-10-20 03:04:02,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:02,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065221263] [2020-10-20 03:04:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:02,410 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 03:04:02,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065221263] [2020-10-20 03:04:02,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:02,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:02,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459102499] [2020-10-20 03:04:02,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:04:02,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:02,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:04:02,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:02,413 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 3 states. [2020-10-20 03:04:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:02,418 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-10-20 03:04:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:04:02,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 03:04:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:02,419 INFO L225 Difference]: With dead ends: 53 [2020-10-20 03:04:02,420 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:04:02,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:02,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:04:02,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:04:02,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:04:02,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:04:02,421 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 03:04:02,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:02,422 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:04:02,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:04:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:04:02,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:04:02,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:04:02,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:04:02 BasicIcfg [2020-10-20 03:04:02,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:04:02,427 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:04:02,427 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:04:02,427 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:04:02,428 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:03:58" (3/4) ... [2020-10-20 03:04:02,431 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:04:02,439 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:04:02,439 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:04:02,439 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:04:02,444 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:04:02,444 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:04:02,445 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:04:02,445 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:04:02,492 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:04:02,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:04:02,494 INFO L168 Benchmark]: Toolchain (without parser) took 5067.94 ms. Allocated memory was 40.4 MB in the beginning and 80.2 MB in the end (delta: 39.8 MB). Free memory was 16.7 MB in the beginning and 22.2 MB in the end (delta: -5.6 MB). Peak memory consumption was 34.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:02,495 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.1 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-20 03:04:02,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.42 ms. Allocated memory was 40.4 MB in the beginning and 42.5 MB in the end (delta: 2.1 MB). Free memory was 15.7 MB in the beginning and 10.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:02,496 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.85 ms. Allocated memory is still 42.5 MB. Free memory was 10.9 MB in the beginning and 8.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:02,497 INFO L168 Benchmark]: Boogie Preprocessor took 32.24 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 8.8 MB in the beginning and 27.0 MB in the end (delta: -18.2 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 03:04:02,498 INFO L168 Benchmark]: RCFGBuilder took 498.41 ms. Allocated memory was 43.0 MB in the beginning and 44.0 MB in the end (delta: 1.0 MB). Free memory was 27.0 MB in the beginning and 18.9 MB in the end (delta: 8.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:02,499 INFO L168 Benchmark]: TraceAbstraction took 3784.54 ms. Allocated memory was 44.0 MB in the beginning and 80.2 MB in the end (delta: 36.2 MB). Free memory was 18.5 MB in the beginning and 25.8 MB in the end (delta: -7.3 MB). Peak memory consumption was 28.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:02,499 INFO L168 Benchmark]: Witness Printer took 65.96 ms. Allocated memory is still 80.2 MB. Free memory was 25.8 MB in the beginning and 22.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:02,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.1 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 632.42 ms. Allocated memory was 40.4 MB in the beginning and 42.5 MB in the end (delta: 2.1 MB). Free memory was 15.7 MB in the beginning and 10.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 44.85 ms. Allocated memory is still 42.5 MB. Free memory was 10.9 MB in the beginning and 8.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 32.24 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 8.8 MB in the beginning and 27.0 MB in the end (delta: -18.2 MB). There was no memory consumed. Max. memory is 14.3 GB. * RCFGBuilder took 498.41 ms. Allocated memory was 43.0 MB in the beginning and 44.0 MB in the end (delta: 1.0 MB). Free memory was 27.0 MB in the beginning and 18.9 MB in the end (delta: 8.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3784.54 ms. Allocated memory was 44.0 MB in the beginning and 80.2 MB in the end (delta: 36.2 MB). Free memory was 18.5 MB in the beginning and 25.8 MB in the end (delta: -7.3 MB). Peak memory consumption was 28.9 MB. Max. memory is 14.3 GB. * Witness Printer took 65.96 ms. Allocated memory is still 80.2 MB. Free memory was 25.8 MB in the beginning and 22.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1035 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 97 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 3181 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 135 SDtfs, 121 SDslu, 165 SDs, 0 SdLazy, 97 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3193 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...