./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe025_tso.oepc.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/safe025_tso.oepc.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 a09eef840386f65706cce8586bf4bf4ebdb94dd3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 03:06:49,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:06:49,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:06:49,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:06:49,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:06:49,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:06:49,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:06:49,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:06:49,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:06:49,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:06:49,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:06:49,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:06:49,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:06:49,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:06:49,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:06:49,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:06:49,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:06:49,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:06:49,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:06:49,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:06:49,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:06:49,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:06:49,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:06:49,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:06:49,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:06:49,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:06:49,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:06:49,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:06:49,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:06:49,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:06:49,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:06:49,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:06:49,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:06:49,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:06:49,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:06:49,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:06:49,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:06:49,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:06:49,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:06:49,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:06:49,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:06:49,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:06:49,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:06:49,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:06:49,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:06:49,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:06:49,376 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:06:49,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:06:49,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:06:49,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:06:49,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:06:49,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:06:49,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:06:49,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:06:49,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:06:49,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:06:49,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:06:49,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:06:49,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:06:49,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:06:49,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:06:49,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:06:49,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:06:49,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:06:49,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:06:49,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:06:49,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:06:49,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:06:49,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:06:49,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:06:49,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:06:49,382 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 -> a09eef840386f65706cce8586bf4bf4ebdb94dd3 [2020-10-20 03:06:49,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:06:49,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:06:49,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:06:49,616 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:06:49,617 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:06:49,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe025_tso.oepc.i [2020-10-20 03:06:49,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c6cf1e2a/bb0688cb85dd4a429b81811b2933b8d1/FLAG27fb54594 [2020-10-20 03:06:50,288 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:06:50,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe025_tso.oepc.i [2020-10-20 03:06:50,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c6cf1e2a/bb0688cb85dd4a429b81811b2933b8d1/FLAG27fb54594 [2020-10-20 03:06:50,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c6cf1e2a/bb0688cb85dd4a429b81811b2933b8d1 [2020-10-20 03:06:50,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:06:50,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:06:50,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:06:50,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:06:50,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:06:50,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:06:50" (1/1) ... [2020-10-20 03:06:50,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d36cae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:50, skipping insertion in model container [2020-10-20 03:06:50,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:06:50" (1/1) ... [2020-10-20 03:06:50,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:06:50,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:06:51,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:06:51,225 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:06:51,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:06:51,388 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:06:51,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51 WrapperNode [2020-10-20 03:06:51,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:06:51,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:06:51,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:06:51,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:06:51,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51" (1/1) ... [2020-10-20 03:06:51,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51" (1/1) ... [2020-10-20 03:06:51,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:06:51,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:06:51,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:06:51,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:06:51,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51" (1/1) ... [2020-10-20 03:06:51,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51" (1/1) ... [2020-10-20 03:06:51,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51" (1/1) ... [2020-10-20 03:06:51,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51" (1/1) ... [2020-10-20 03:06:51,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51" (1/1) ... [2020-10-20 03:06:51,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51" (1/1) ... [2020-10-20 03:06:51,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51" (1/1) ... [2020-10-20 03:06:51,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:06:51,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:06:51,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:06:51,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:06:51,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51" (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 03:06:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:06:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:06:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:06:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:06:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:06:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:06:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:06:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:06:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:06:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:06:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:06:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:06:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:06:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:06:51,563 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 03:06:51,956 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:06:51,956 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:06:51,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:06:51 BoogieIcfgContainer [2020-10-20 03:06:51,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:06:51,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:06:51,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:06:51,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:06:51,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:06:50" (1/3) ... [2020-10-20 03:06:51,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2607de83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:06:51, skipping insertion in model container [2020-10-20 03:06:51,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:06:51" (2/3) ... [2020-10-20 03:06:51,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2607de83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:06:51, skipping insertion in model container [2020-10-20 03:06:51,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:06:51" (3/3) ... [2020-10-20 03:06:51,976 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-10-20 03:06:51,989 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:06:51,990 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:06:51,999 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:06:52,000 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:06:52,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,033 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,033 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,033 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,034 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,035 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,036 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,036 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,036 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,036 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,036 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,041 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,041 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,052 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,058 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,058 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,058 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,058 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:06:52,066 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:06:52,082 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:06:52,106 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:06:52,107 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:06:52,108 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:06:52,108 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:06:52,108 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:06:52,108 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:06:52,108 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:06:52,108 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:06:52,122 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:06:52,125 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:06:52,127 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:06:52,129 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-20 03:06:52,188 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-20 03:06:52,189 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:06:52,195 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 62 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 03:06:52,201 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:06:54,345 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-20 03:06:54,539 INFO L132 LiptonReduction]: Checked pairs total: 2926 [2020-10-20 03:06:54,539 INFO L134 LiptonReduction]: Total number of compositions: 72 [2020-10-20 03:06:54,546 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:06:54,587 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-20 03:06:54,589 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-20 03:06:54,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:06:54,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:54,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:54,600 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:54,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-10-20 03:06:54,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:54,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967928385] [2020-10-20 03:06:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:54,846 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 03:06:54,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967928385] [2020-10-20 03:06:54,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:54,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:06:54,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888797312] [2020-10-20 03:06:54,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:06:54,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:54,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:06:54,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:54,867 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-20 03:06:54,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:54,931 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-20 03:06:54,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:06:54,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 03:06:54,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:54,958 INFO L225 Difference]: With dead ends: 282 [2020-10-20 03:06:54,958 INFO L226 Difference]: Without dead ends: 218 [2020-10-20 03:06:54,960 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 03:06:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-20 03:06:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-20 03:06:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-20 03:06:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-20 03:06:55,043 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-20 03:06:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:55,047 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-20 03:06:55,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:06:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-20 03:06:55,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:06:55,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:55,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:55,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:06:55,052 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:55,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:55,053 INFO L82 PathProgramCache]: Analyzing trace with hash 305615834, now seen corresponding path program 1 times [2020-10-20 03:06:55,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:55,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191249606] [2020-10-20 03:06:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:55,180 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 03:06:55,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191249606] [2020-10-20 03:06:55,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:55,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:06:55,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187875924] [2020-10-20 03:06:55,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:06:55,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:55,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:06:55,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:55,184 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-20 03:06:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:55,203 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-20 03:06:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:06:55,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 03:06:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:55,206 INFO L225 Difference]: With dead ends: 202 [2020-10-20 03:06:55,206 INFO L226 Difference]: Without dead ends: 202 [2020-10-20 03:06:55,208 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 03:06:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-20 03:06:55,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-20 03:06:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-20 03:06:55,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-20 03:06:55,238 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-20 03:06:55,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:55,239 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-20 03:06:55,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:06:55,239 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-20 03:06:55,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:06:55,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:55,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:55,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:06:55,244 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:55,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:55,244 INFO L82 PathProgramCache]: Analyzing trace with hash 839872088, now seen corresponding path program 1 times [2020-10-20 03:06:55,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:55,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566860367] [2020-10-20 03:06:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:55,320 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 03:06:55,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566860367] [2020-10-20 03:06:55,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:55,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:06:55,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610218132] [2020-10-20 03:06:55,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:06:55,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:55,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:06:55,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:06:55,322 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-20 03:06:55,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:55,329 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-10-20 03:06:55,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:06:55,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 03:06:55,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:55,332 INFO L225 Difference]: With dead ends: 194 [2020-10-20 03:06:55,332 INFO L226 Difference]: Without dead ends: 194 [2020-10-20 03:06:55,332 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 03:06:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-20 03:06:55,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-20 03:06:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-20 03:06:55,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-10-20 03:06:55,366 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-10-20 03:06:55,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:55,367 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-10-20 03:06:55,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:06:55,367 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-10-20 03:06:55,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:06:55,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:55,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:55,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:06:55,373 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:55,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:55,374 INFO L82 PathProgramCache]: Analyzing trace with hash 266199867, now seen corresponding path program 1 times [2020-10-20 03:06:55,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:55,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264057764] [2020-10-20 03:06:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:55,466 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 03:06:55,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264057764] [2020-10-20 03:06:55,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:55,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:06:55,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770120876] [2020-10-20 03:06:55,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:55,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:55,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:55,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:55,469 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-10-20 03:06:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:55,548 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-10-20 03:06:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:06:55,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:06:55,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:55,550 INFO L225 Difference]: With dead ends: 225 [2020-10-20 03:06:55,550 INFO L226 Difference]: Without dead ends: 161 [2020-10-20 03:06:55,551 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 03:06:55,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-20 03:06:55,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-10-20 03:06:55,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-20 03:06:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-10-20 03:06:55,563 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-10-20 03:06:55,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:55,567 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-10-20 03:06:55,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:55,567 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-10-20 03:06:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:06:55,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:55,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:55,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:06:55,569 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:55,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:55,570 INFO L82 PathProgramCache]: Analyzing trace with hash -297551950, now seen corresponding path program 1 times [2020-10-20 03:06:55,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:55,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975437506] [2020-10-20 03:06:55,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:55,698 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 03:06:55,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975437506] [2020-10-20 03:06:55,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:55,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:55,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863410405] [2020-10-20 03:06:55,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:06:55,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:55,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:06:55,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:06:55,702 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-10-20 03:06:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:55,746 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-10-20 03:06:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:06:55,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 03:06:55,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:55,747 INFO L225 Difference]: With dead ends: 160 [2020-10-20 03:06:55,748 INFO L226 Difference]: Without dead ends: 123 [2020-10-20 03:06:55,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 03:06:55,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-20 03:06:55,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-20 03:06:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-20 03:06:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-20 03:06:55,754 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-10-20 03:06:55,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:55,755 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-20 03:06:55,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:06:55,755 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-20 03:06:55,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:06:55,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:55,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:06:55,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:06:55,757 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:55,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:55,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1813731877, now seen corresponding path program 1 times [2020-10-20 03:06:55,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:55,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477580896] [2020-10-20 03:06:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:55,822 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 03:06:55,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477580896] [2020-10-20 03:06:55,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:55,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:06:55,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308702237] [2020-10-20 03:06:55,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:06:55,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:55,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:06:55,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:06:55,824 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-10-20 03:06:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:55,890 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-10-20 03:06:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:06:55,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 03:06:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:55,893 INFO L225 Difference]: With dead ends: 118 [2020-10-20 03:06:55,893 INFO L226 Difference]: Without dead ends: 108 [2020-10-20 03:06:55,893 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 03:06:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-20 03:06:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-20 03:06:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-20 03:06:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-10-20 03:06:55,897 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-10-20 03:06:55,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:55,898 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-10-20 03:06:55,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:06:55,898 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-10-20 03:06:55,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:06:55,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:55,899 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 03:06:55,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:06:55,899 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:55,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1641541318, now seen corresponding path program 1 times [2020-10-20 03:06:55,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:55,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177537955] [2020-10-20 03:06:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:55,934 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 03:06:55,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177537955] [2020-10-20 03:06:55,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:55,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:55,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17032315] [2020-10-20 03:06:55,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:55,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:55,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:55,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:55,936 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-10-20 03:06:55,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:55,958 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-10-20 03:06:55,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:06:55,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:06:55,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:55,960 INFO L225 Difference]: With dead ends: 133 [2020-10-20 03:06:55,960 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 03:06:55,960 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 03:06:55,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 03:06:55,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-20 03:06:55,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 03:06:55,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-20 03:06:55,963 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-10-20 03:06:55,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:55,963 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-20 03:06:55,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:55,964 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-20 03:06:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:06:55,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:55,964 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 03:06:55,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:06:55,965 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:55,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:55,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2114303388, now seen corresponding path program 2 times [2020-10-20 03:06:55,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:55,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557053264] [2020-10-20 03:06:55,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:56,050 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 03:06:56,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557053264] [2020-10-20 03:06:56,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:56,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:56,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623711722] [2020-10-20 03:06:56,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:56,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:56,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:56,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:56,053 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-20 03:06:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:56,080 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-10-20 03:06:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:06:56,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:06:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:56,081 INFO L225 Difference]: With dead ends: 63 [2020-10-20 03:06:56,081 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 03:06:56,081 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 03:06:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 03:06:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-20 03:06:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 03:06:56,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-20 03:06:56,089 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-10-20 03:06:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:56,089 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-20 03:06:56,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:56,089 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-20 03:06:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:06:56,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:56,091 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 03:06:56,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:06:56,094 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:56,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:56,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1534085368, now seen corresponding path program 3 times [2020-10-20 03:06:56,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:56,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658033470] [2020-10-20 03:06:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:56,137 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 03:06:56,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658033470] [2020-10-20 03:06:56,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:56,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:06:56,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269412679] [2020-10-20 03:06:56,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:56,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:56,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:56,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:56,139 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-20 03:06:56,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:56,165 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-10-20 03:06:56,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:06:56,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:06:56,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:56,166 INFO L225 Difference]: With dead ends: 51 [2020-10-20 03:06:56,167 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 03:06:56,167 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 03:06:56,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 03:06:56,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-20 03:06:56,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 03:06:56,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-10-20 03:06:56,169 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-10-20 03:06:56,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:56,170 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-10-20 03:06:56,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:56,170 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-10-20 03:06:56,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:06:56,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:06:56,171 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 03:06:56,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 03:06:56,171 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:06:56,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:06:56,172 INFO L82 PathProgramCache]: Analyzing trace with hash 172930902, now seen corresponding path program 4 times [2020-10-20 03:06:56,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:06:56,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140997500] [2020-10-20 03:06:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:06:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:06:56,220 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 03:06:56,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140997500] [2020-10-20 03:06:56,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:06:56,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:06:56,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100260215] [2020-10-20 03:06:56,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:06:56,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:06:56,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:06:56,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:06:56,222 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-10-20 03:06:56,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:06:56,240 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-10-20 03:06:56,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:06:56,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:06:56,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:06:56,241 INFO L225 Difference]: With dead ends: 29 [2020-10-20 03:06:56,241 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:06:56,242 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 03:06:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:06:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:06:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:06:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:06:56,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 03:06:56,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:06:56,244 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:06:56,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:06:56,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:06:56,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:06:56,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 03:06:56,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:06:56 BasicIcfg [2020-10-20 03:06:56,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:06:56,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:06:56,250 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:06:56,251 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:06:56,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:06:51" (3/4) ... [2020-10-20 03:06:56,256 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:06:56,265 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:06:56,265 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:06:56,265 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:06:56,272 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:06:56,272 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:06:56,273 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:06:56,273 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:06:56,326 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:06:56,327 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:06:56,329 INFO L168 Benchmark]: Toolchain (without parser) took 5752.13 ms. Allocated memory was 34.6 MB in the beginning and 77.1 MB in the end (delta: 42.5 MB). Free memory was 14.4 MB in the beginning and 47.2 MB in the end (delta: -32.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,330 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 32.5 MB. Free memory was 9.9 MB in the beginning and 9.8 MB in the end (delta: 42.1 kB). Peak memory consumption was 42.1 kB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 808.01 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 13.6 MB in the beginning and 16.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.48 ms. Allocated memory is still 45.1 MB. Free memory was 16.0 MB in the beginning and 13.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,332 INFO L168 Benchmark]: Boogie Preprocessor took 30.44 ms. Allocated memory is still 45.1 MB. Free memory was 13.9 MB in the beginning and 12.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,332 INFO L168 Benchmark]: RCFGBuilder took 490.13 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 12.2 MB in the beginning and 21.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,333 INFO L168 Benchmark]: TraceAbstraction took 4289.41 ms. Allocated memory was 47.2 MB in the beginning and 77.1 MB in the end (delta: 29.9 MB). Free memory was 21.1 MB in the beginning and 50.9 MB in the end (delta: -29.9 MB). Peak memory consumption was 33.0 kB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,334 INFO L168 Benchmark]: Witness Printer took 76.62 ms. Allocated memory is still 77.1 MB. Free memory was 50.0 MB in the beginning and 47.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:06:56,337 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 32.5 MB. Free memory was 9.9 MB in the beginning and 9.8 MB in the end (delta: 42.1 kB). Peak memory consumption was 42.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 808.01 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 13.6 MB in the beginning and 16.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 47.48 ms. Allocated memory is still 45.1 MB. Free memory was 16.0 MB in the beginning and 13.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 30.44 ms. Allocated memory is still 45.1 MB. Free memory was 13.9 MB in the beginning and 12.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 490.13 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 12.2 MB in the beginning and 21.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4289.41 ms. Allocated memory was 47.2 MB in the beginning and 77.1 MB in the end (delta: 29.9 MB). Free memory was 21.1 MB in the beginning and 50.9 MB in the end (delta: -29.9 MB). Peak memory consumption was 33.0 kB. Max. memory is 14.3 GB. * Witness Printer took 76.62 ms. Allocated memory is still 77.1 MB. Free memory was 50.0 MB in the beginning and 47.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1015 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 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: 4.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 206 SDtfs, 147 SDslu, 245 SDs, 0 SdLazy, 128 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4352 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...