./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe017_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/safe017_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 65f55760d11a4468ae1abb0511efc1da05ee08b9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 03:05:27,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:05:27,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:05:28,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:05:28,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:05:28,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:05:28,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:05:28,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:05:28,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:05:28,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:05:28,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:05:28,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:05:28,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:05:28,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:05:28,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:05:28,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:05:28,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:05:28,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:05:28,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:05:28,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:05:28,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:05:28,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:05:28,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:05:28,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:05:28,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:05:28,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:05:28,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:05:28,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:05:28,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:05:28,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:05:28,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:05:28,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:05:28,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:05:28,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:05:28,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:05:28,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:05:28,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:05:28,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:05:28,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:05:28,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:05:28,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:05:28,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:05:28,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:05:28,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:05:28,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:05:28,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:05:28,168 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:05:28,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:05:28,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:05:28,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:05:28,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:05:28,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:05:28,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:05:28,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:05:28,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:05:28,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:05:28,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:05:28,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:05:28,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:05:28,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:05:28,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:05:28,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:05:28,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:05:28,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:05:28,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:05:28,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:05:28,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:05:28,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:05:28,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:05:28,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:05:28,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:05:28,174 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 -> 65f55760d11a4468ae1abb0511efc1da05ee08b9 [2020-10-20 03:05:28,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:05:28,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:05:28,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:05:28,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:05:28,402 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:05:28,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe017_tso.opt.i [2020-10-20 03:05:28,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acbc4ad84/ab0efb2fbb8e48bfa144b2f74e8ab91a/FLAG40a35f4dd [2020-10-20 03:05:29,088 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:05:29,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe017_tso.opt.i [2020-10-20 03:05:29,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acbc4ad84/ab0efb2fbb8e48bfa144b2f74e8ab91a/FLAG40a35f4dd [2020-10-20 03:05:29,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acbc4ad84/ab0efb2fbb8e48bfa144b2f74e8ab91a [2020-10-20 03:05:29,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:05:29,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:05:29,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:05:29,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:05:29,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:05:29,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@370988c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29, skipping insertion in model container [2020-10-20 03:05:29,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:05:29,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:05:29,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:05:29,872 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:05:29,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:05:30,054 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:05:30,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:30 WrapperNode [2020-10-20 03:05:30,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:05:30,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:05:30,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:05:30,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:05:30,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:30" (1/1) ... [2020-10-20 03:05:30,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:30" (1/1) ... [2020-10-20 03:05:30,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:05:30,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:05:30,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:05:30,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:05:30,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:30" (1/1) ... [2020-10-20 03:05:30,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:30" (1/1) ... [2020-10-20 03:05:30,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:30" (1/1) ... [2020-10-20 03:05:30,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:30" (1/1) ... [2020-10-20 03:05:30,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:30" (1/1) ... [2020-10-20 03:05:30,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:30" (1/1) ... [2020-10-20 03:05:30,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:30" (1/1) ... [2020-10-20 03:05:30,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:05:30,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:05:30,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:05:30,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:05:30,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:30" (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 03:05:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:05:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:05:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:05:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:05:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:05:30,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:05:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:05:30,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:05:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:05:30,281 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:05:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:05:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:05:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:05:30,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:05:30,284 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 03:05:30,684 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:05:30,684 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:05:30,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:30 BoogieIcfgContainer [2020-10-20 03:05:30,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:05:30,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:05:30,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:05:30,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:05:30,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:05:29" (1/3) ... [2020-10-20 03:05:30,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e03e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:05:30, skipping insertion in model container [2020-10-20 03:05:30,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:30" (2/3) ... [2020-10-20 03:05:30,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e03e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:05:30, skipping insertion in model container [2020-10-20 03:05:30,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:30" (3/3) ... [2020-10-20 03:05:30,698 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2020-10-20 03:05:30,711 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:05:30,711 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:05:30,719 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:05:30,721 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:05:30,752 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,752 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,752 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,753 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,753 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,754 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,755 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,755 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,758 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,758 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,762 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,763 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,763 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,770 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,770 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,777 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:05:30,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:05:30,806 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:05:30,807 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:05:30,807 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:05:30,807 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:05:30,807 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:05:30,808 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:05:30,808 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:05:30,808 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:05:30,823 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:05:30,826 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 76 transitions, 167 flow [2020-10-20 03:05:30,828 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 76 transitions, 167 flow [2020-10-20 03:05:30,830 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 76 transitions, 167 flow [2020-10-20 03:05:30,876 INFO L129 PetriNetUnfolder]: 3/73 cut-off events. [2020-10-20 03:05:30,876 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:05:30,882 INFO L80 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 3/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-20 03:05:30,885 INFO L117 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-20 03:05:32,708 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-20 03:05:32,837 INFO L132 LiptonReduction]: Checked pairs total: 2406 [2020-10-20 03:05:32,837 INFO L134 LiptonReduction]: Total number of compositions: 68 [2020-10-20 03:05:32,844 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:05:32,869 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-20 03:05:32,871 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-20 03:05:32,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:05:32,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:32,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:32,881 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:32,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:32,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1461766860, now seen corresponding path program 1 times [2020-10-20 03:05:32,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:32,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348237294] [2020-10-20 03:05:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:33,084 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 03:05:33,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348237294] [2020-10-20 03:05:33,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:33,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:33,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60669353] [2020-10-20 03:05:33,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:05:33,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:33,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:05:33,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:05:33,111 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-20 03:05:33,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:33,144 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-20 03:05:33,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:05:33,145 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:05:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:33,162 INFO L225 Difference]: With dead ends: 274 [2020-10-20 03:05:33,163 INFO L226 Difference]: Without dead ends: 226 [2020-10-20 03:05:33,164 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 03:05:33,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-20 03:05:33,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-20 03:05:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-20 03:05:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-20 03:05:33,231 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-20 03:05:33,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:33,233 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-20 03:05:33,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:05:33,233 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-20 03:05:33,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:05:33,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:33,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:33,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:05:33,236 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:33,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:33,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1929876305, now seen corresponding path program 1 times [2020-10-20 03:05:33,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:33,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340563852] [2020-10-20 03:05:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:33,406 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 03:05:33,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340563852] [2020-10-20 03:05:33,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:33,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:33,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698352264] [2020-10-20 03:05:33,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:33,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:33,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:33,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:33,413 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-20 03:05:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:33,465 INFO L93 Difference]: Finished difference Result 258 states and 686 transitions. [2020-10-20 03:05:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:33,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 03:05:33,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:33,469 INFO L225 Difference]: With dead ends: 258 [2020-10-20 03:05:33,469 INFO L226 Difference]: Without dead ends: 210 [2020-10-20 03:05:33,470 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 03:05:33,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-20 03:05:33,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-10-20 03:05:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-20 03:05:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 574 transitions. [2020-10-20 03:05:33,492 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 574 transitions. Word has length 9 [2020-10-20 03:05:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:33,493 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 574 transitions. [2020-10-20 03:05:33,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 574 transitions. [2020-10-20 03:05:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:05:33,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:33,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:33,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:05:33,495 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:33,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:33,496 INFO L82 PathProgramCache]: Analyzing trace with hash 303328579, now seen corresponding path program 1 times [2020-10-20 03:05:33,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:33,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515957339] [2020-10-20 03:05:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:33,594 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 03:05:33,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515957339] [2020-10-20 03:05:33,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:33,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:33,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982711588] [2020-10-20 03:05:33,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:33,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:33,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:33,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:33,596 INFO L87 Difference]: Start difference. First operand 210 states and 574 transitions. Second operand 4 states. [2020-10-20 03:05:33,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:33,622 INFO L93 Difference]: Finished difference Result 230 states and 600 transitions. [2020-10-20 03:05:33,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:33,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 03:05:33,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:33,625 INFO L225 Difference]: With dead ends: 230 [2020-10-20 03:05:33,625 INFO L226 Difference]: Without dead ends: 190 [2020-10-20 03:05:33,625 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 03:05:33,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-20 03:05:33,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-10-20 03:05:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-20 03:05:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 508 transitions. [2020-10-20 03:05:33,674 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 508 transitions. Word has length 10 [2020-10-20 03:05:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:33,674 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 508 transitions. [2020-10-20 03:05:33,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:33,674 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 508 transitions. [2020-10-20 03:05:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:05:33,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:33,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:33,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:05:33,683 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:33,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:33,683 INFO L82 PathProgramCache]: Analyzing trace with hash 813888440, now seen corresponding path program 1 times [2020-10-20 03:05:33,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:33,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928719367] [2020-10-20 03:05:33,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:33,801 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 03:05:33,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928719367] [2020-10-20 03:05:33,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:33,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:33,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047912004] [2020-10-20 03:05:33,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:33,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:33,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:33,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:33,804 INFO L87 Difference]: Start difference. First operand 190 states and 508 transitions. Second operand 4 states. [2020-10-20 03:05:33,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:33,838 INFO L93 Difference]: Finished difference Result 210 states and 542 transitions. [2020-10-20 03:05:33,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:33,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:05:33,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:33,841 INFO L225 Difference]: With dead ends: 210 [2020-10-20 03:05:33,842 INFO L226 Difference]: Without dead ends: 186 [2020-10-20 03:05:33,842 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 03:05:33,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-20 03:05:33,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-10-20 03:05:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-20 03:05:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 494 transitions. [2020-10-20 03:05:33,853 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 494 transitions. Word has length 11 [2020-10-20 03:05:33,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:33,853 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 494 transitions. [2020-10-20 03:05:33,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:33,853 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 494 transitions. [2020-10-20 03:05:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:05:33,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:33,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:33,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:05:33,855 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:33,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:33,856 INFO L82 PathProgramCache]: Analyzing trace with hash 90593002, now seen corresponding path program 1 times [2020-10-20 03:05:33,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:33,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890857784] [2020-10-20 03:05:33,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:33,916 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 03:05:33,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890857784] [2020-10-20 03:05:33,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:33,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:05:33,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144420116] [2020-10-20 03:05:33,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:33,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:33,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:33,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:33,918 INFO L87 Difference]: Start difference. First operand 186 states and 494 transitions. Second operand 5 states. [2020-10-20 03:05:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:33,982 INFO L93 Difference]: Finished difference Result 358 states and 886 transitions. [2020-10-20 03:05:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 03:05:33,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 03:05:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:33,985 INFO L225 Difference]: With dead ends: 358 [2020-10-20 03:05:33,985 INFO L226 Difference]: Without dead ends: 198 [2020-10-20 03:05:33,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 03:05:33,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-20 03:05:33,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 174. [2020-10-20 03:05:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-20 03:05:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 432 transitions. [2020-10-20 03:05:33,994 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 432 transitions. Word has length 12 [2020-10-20 03:05:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:33,994 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 432 transitions. [2020-10-20 03:05:33,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 432 transitions. [2020-10-20 03:05:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:05:33,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:33,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:33,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:05:33,997 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:33,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:33,997 INFO L82 PathProgramCache]: Analyzing trace with hash -89644004, now seen corresponding path program 1 times [2020-10-20 03:05:33,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:33,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339328857] [2020-10-20 03:05:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:34,085 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 03:05:34,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339328857] [2020-10-20 03:05:34,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:34,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:34,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669192585] [2020-10-20 03:05:34,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:34,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:34,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:34,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:34,088 INFO L87 Difference]: Start difference. First operand 174 states and 432 transitions. Second operand 5 states. [2020-10-20 03:05:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:34,138 INFO L93 Difference]: Finished difference Result 244 states and 599 transitions. [2020-10-20 03:05:34,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:34,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 03:05:34,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:34,141 INFO L225 Difference]: With dead ends: 244 [2020-10-20 03:05:34,141 INFO L226 Difference]: Without dead ends: 150 [2020-10-20 03:05:34,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:05:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-20 03:05:34,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-20 03:05:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-20 03:05:34,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 358 transitions. [2020-10-20 03:05:34,149 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 358 transitions. Word has length 12 [2020-10-20 03:05:34,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:34,149 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 358 transitions. [2020-10-20 03:05:34,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:34,149 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 358 transitions. [2020-10-20 03:05:34,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:05:34,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:34,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:34,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:05:34,151 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:34,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:34,152 INFO L82 PathProgramCache]: Analyzing trace with hash -90307094, now seen corresponding path program 2 times [2020-10-20 03:05:34,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:34,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140505127] [2020-10-20 03:05:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:34,217 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 03:05:34,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140505127] [2020-10-20 03:05:34,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:34,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:34,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058784174] [2020-10-20 03:05:34,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:34,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:34,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:34,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:34,220 INFO L87 Difference]: Start difference. First operand 150 states and 358 transitions. Second operand 4 states. [2020-10-20 03:05:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:34,268 INFO L93 Difference]: Finished difference Result 164 states and 351 transitions. [2020-10-20 03:05:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:34,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:05:34,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:34,270 INFO L225 Difference]: With dead ends: 164 [2020-10-20 03:05:34,270 INFO L226 Difference]: Without dead ends: 128 [2020-10-20 03:05:34,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-20 03:05:34,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-20 03:05:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-20 03:05:34,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 276 transitions. [2020-10-20 03:05:34,276 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 276 transitions. Word has length 12 [2020-10-20 03:05:34,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:34,277 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 276 transitions. [2020-10-20 03:05:34,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:34,277 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 276 transitions. [2020-10-20 03:05:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:05:34,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:34,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:34,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:05:34,278 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:34,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:34,279 INFO L82 PathProgramCache]: Analyzing trace with hash 85707411, now seen corresponding path program 1 times [2020-10-20 03:05:34,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:34,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436863108] [2020-10-20 03:05:34,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:34,382 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 03:05:34,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436863108] [2020-10-20 03:05:34,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:34,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:05:34,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208405568] [2020-10-20 03:05:34,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:34,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:34,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:34,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:34,384 INFO L87 Difference]: Start difference. First operand 128 states and 276 transitions. Second operand 5 states. [2020-10-20 03:05:34,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:34,423 INFO L93 Difference]: Finished difference Result 116 states and 222 transitions. [2020-10-20 03:05:34,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:05:34,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 03:05:34,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:34,424 INFO L225 Difference]: With dead ends: 116 [2020-10-20 03:05:34,424 INFO L226 Difference]: Without dead ends: 92 [2020-10-20 03:05:34,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:05:34,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-20 03:05:34,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-20 03:05:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-20 03:05:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 173 transitions. [2020-10-20 03:05:34,429 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 173 transitions. Word has length 13 [2020-10-20 03:05:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:34,429 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 173 transitions. [2020-10-20 03:05:34,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:34,429 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 173 transitions. [2020-10-20 03:05:34,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:05:34,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:34,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:34,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:05:34,431 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:34,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:34,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1274722541, now seen corresponding path program 1 times [2020-10-20 03:05:34,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:34,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858220498] [2020-10-20 03:05:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:34,515 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 03:05:34,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858220498] [2020-10-20 03:05:34,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:34,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:34,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150245234] [2020-10-20 03:05:34,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:34,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:34,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:34,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:34,519 INFO L87 Difference]: Start difference. First operand 92 states and 173 transitions. Second operand 4 states. [2020-10-20 03:05:34,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:34,541 INFO L93 Difference]: Finished difference Result 104 states and 181 transitions. [2020-10-20 03:05:34,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:34,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 03:05:34,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:34,543 INFO L225 Difference]: With dead ends: 104 [2020-10-20 03:05:34,543 INFO L226 Difference]: Without dead ends: 70 [2020-10-20 03:05:34,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:34,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-20 03:05:34,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-20 03:05:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 03:05:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-10-20 03:05:34,547 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 14 [2020-10-20 03:05:34,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:34,547 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-10-20 03:05:34,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:34,547 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-10-20 03:05:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:05:34,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:34,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:34,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 03:05:34,549 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:34,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1788026541, now seen corresponding path program 1 times [2020-10-20 03:05:34,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:34,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912102873] [2020-10-20 03:05:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:34,605 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 03:05:34,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912102873] [2020-10-20 03:05:34,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:34,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 03:05:34,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056659040] [2020-10-20 03:05:34,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:05:34,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:34,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:05:34,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:05:34,608 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 6 states. [2020-10-20 03:05:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:34,635 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-10-20 03:05:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:05:34,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 03:05:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:34,635 INFO L225 Difference]: With dead ends: 58 [2020-10-20 03:05:34,635 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:05:34,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 03:05:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:05:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:05:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:05:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:05:34,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-20 03:05:34,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:34,638 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:05:34,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:05:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:05:34,638 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:05:34,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 03:05:34,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:05:34 BasicIcfg [2020-10-20 03:05:34,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:05:34,643 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:05:34,643 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:05:34,643 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:05:34,644 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:30" (3/4) ... [2020-10-20 03:05:34,648 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:05:34,656 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:05:34,656 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:05:34,656 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:05:34,661 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:05:34,662 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:05:34,662 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:05:34,662 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:05:34,708 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:05:34,708 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:05:34,710 INFO L168 Benchmark]: Toolchain (without parser) took 5349.40 ms. Allocated memory was 36.2 MB in the beginning and 76.0 MB in the end (delta: 39.8 MB). Free memory was 17.9 MB in the beginning and 26.1 MB in the end (delta: -8.2 MB). Peak memory consumption was 31.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,711 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 34.1 MB. Free memory was 12.2 MB in the beginning and 12.2 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.48 ms. Allocated memory was 36.2 MB in the beginning and 45.6 MB in the end (delta: 9.4 MB). Free memory was 17.0 MB in the beginning and 18.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.78 ms. Allocated memory is still 45.6 MB. Free memory was 17.9 MB in the beginning and 15.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,713 INFO L168 Benchmark]: Boogie Preprocessor took 50.78 ms. Allocated memory is still 45.6 MB. Free memory was 15.8 MB in the beginning and 14.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,713 INFO L168 Benchmark]: RCFGBuilder took 490.35 ms. Allocated memory was 45.6 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Free memory was 14.1 MB in the beginning and 27.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,714 INFO L168 Benchmark]: TraceAbstraction took 3953.15 ms. Allocated memory was 48.8 MB in the beginning and 76.0 MB in the end (delta: 27.3 MB). Free memory was 27.3 MB in the beginning and 29.8 MB in the end (delta: -2.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,715 INFO L168 Benchmark]: Witness Printer took 65.29 ms. Allocated memory is still 76.0 MB. Free memory was 29.8 MB in the beginning and 26.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 34.1 MB. Free memory was 12.2 MB in the beginning and 12.2 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 689.48 ms. Allocated memory was 36.2 MB in the beginning and 45.6 MB in the end (delta: 9.4 MB). Free memory was 17.0 MB in the beginning and 18.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 89.78 ms. Allocated memory is still 45.6 MB. Free memory was 17.9 MB in the beginning and 15.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 50.78 ms. Allocated memory is still 45.6 MB. Free memory was 15.8 MB in the beginning and 14.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 490.35 ms. Allocated memory was 45.6 MB in the beginning and 48.8 MB in the end (delta: 3.1 MB). Free memory was 14.1 MB in the beginning and 27.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3953.15 ms. Allocated memory was 48.8 MB in the beginning and 76.0 MB in the end (delta: 27.3 MB). Free memory was 27.3 MB in the beginning and 29.8 MB in the end (delta: -2.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 14.3 GB. * Witness Printer took 65.29 ms. Allocated memory is still 76.0 MB. Free memory was 29.8 MB in the beginning and 26.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 899 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 83 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2406 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 219 SDtfs, 195 SDslu, 336 SDs, 0 SdLazy, 125 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 10 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3634 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...